Hydroxy Bonded Directly To Carbon Or Peroxy Bonded Directly To Two Carbons Or To Hydrogen And Carbon (h Of The Hydroxy Or The H Bonded To The Peroxy May Be Replaced By A Substituted Or Unsubstituted Ammonium Ion Or A Group Ia Or Iia Light Metal) Patents (Class 556/449)
  • Patent number: 5239085
    Abstract: An organocyclosiloxane having utility as a coupling agent is disclosed said organocyclosiloxane having the general formula ##STR1## wherein R.sup.1 is independently selected from monovalent hydrocarbon groups having 1 to 8 carbons, R.sup.2 is selected from the group consisting of an alkoxy group and an alkoxysilylalkyl group, R.sup.3 is an organofunctional group selected from the group consisting of glycidoxyalkyl, methacryloxyalkyl, N-(trialkylsilyl)aminoalkyl (hydroxyphenyl)alkyl and haloalkyl x is 1 to 6 and y is 1 to 6, with the proviso that x+y is an integer having a value of 3 to 8.
    Type: Grant
    Filed: February 26, 1992
    Date of Patent: August 24, 1993
    Assignee: Dow Corning Toray Silicone Co., Ltd.
    Inventors: Hiroji Enami, Shoji Akamatsu
  • Patent number: 5237110
    Abstract: This invention provides a novel class of vitamin D-related compounds, namely the 1.alpha.-hydroxy-19-nor-vitamin D analogs, as well as a general method for their chemical synthesis. The compounds exhibit pronounced activity in arresting the proliferation of undifferentiated cells, including malignant cells, and in inducing their differentiation, and thus represent novel therapeutic agents for the treatment of malignant and other diseases characterized by the proliferative growth of undifferentiated cells. Formulations for therapeutic use and treatment methods are also provided.
    Type: Grant
    Filed: February 16, 1990
    Date of Patent: August 17, 1993
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Hector F. DeLuca, Heinrich K. Schnoes, Kato L. Perlman, Rafal R. Sicinski, Jean M. Prahl
  • Patent number: 5232836
    Abstract: Vitamin D derivatives corresponding to the following formula I ##STR1## in which R.sub.1 denotes a substituted alkyl group having 1 to 15 carbon atoms, in particular the side chains of vitamin D.sub.2 (C.sup.20 to C.sup.28) or D.sub.3 (C.sup.20 to C.sup.
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: August 3, 1993
    Assignee: Ire-Medgenix S.A.
    Inventors: Roger Bouillon, Pierre J. De Clerco, Pierre Eliard, Maurits Vanderwalle
  • Patent number: 5231205
    Abstract: The magnesium complexes of cyclic hydrocarbons, such as 1,2-dimethylenecycloalkanes, are readily prepared in high yields using highly reactive magnesium. Reactions of these (2-butene-1,4-diyl)magnesium reagents with electrophiles such as dibromoalkanes, alkylditosylates, or bromoalkylnitriles serve as a convenient method for synthesizing spirocyclic systems. Significantly, spirocarbocycles prepared by thisThe present invention was made with Government support under Contract No. GM35153 awarded by the National Institute of Health. The Government has certain rights in the invention.
    Type: Grant
    Filed: September 23, 1991
    Date of Patent: July 27, 1993
    Assignee: Board of Regents of the University of Nebraska
    Inventor: Reuben D. Rieke
  • Patent number: 5227507
    Abstract: A process for the manufacture of compounds of the general formula ##STR1## wherein R.sup.1 signifies hydroxy or an etherified hydroxy group, and of zeaxanthin by converting a compound of the general formula ##STR2## wherein R.sup.1 has the above significance, in an inert organic solvent into the acetylenide and reacting this with methyl vinyl ketone, reducing the alcoholate obtained or the alcohol (obtained after hydrolysis of the alcoholate) of the general formula ##STR3## wherein R.sup.1 has the above significance, in an inert organic solvent with an aluminum hydride of the general formulaR.sub.x MAlH.sub.4-x IIIwherein M signifies alkali metal, R represents C.sub.1 -C.sub.10 -alkoxy or a group of the formula C.sub.n H.sub.2n+1 --O--C.sub.m H.sub.2m --O--, m and n each individually denote whole numbers of 1 to 7 and x stands for 0, 1, 2 or 3,and subsequently hydrolyzing to give the compound of formula IV and, if desired, converting the compound of formula IV obtained into zeaxanthin.
    Type: Grant
    Filed: March 23, 1990
    Date of Patent: July 13, 1993
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Teodor Lukac, Milan Soukup
  • Patent number: 5208360
    Abstract: Compositions and a method of delivering a humectant to a surface such as skin by forming a reaction product of the humectant with an organosilicon compound. The reaction product is applied to the skin surface and contacted with moisture which causes the reaction product to undergo hydrolysis on the skin surface. This releases free humectant onto the skin surface and the silanol functional organosilicon compound formed as a result of the hydrolysis can be utilized on the skin surface as a durable water repellent and softening ingredient for the skin.
    Type: Grant
    Filed: February 6, 1992
    Date of Patent: May 4, 1993
    Assignee: Dow Corning Corporation
    Inventors: Andrew H. Ward, Stefan F. Rentsch, Alfred J. DiSapio
  • Patent number: 5206230
    Abstract: Fluorine-containing vitamin D.sub.3 analogues of the formula[I]: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are independently hydrogen atom, a chemically inactive hydroxy-protecting group, an acyl having 2 to 8 carbon atoms, or an alkyl having 1 to 8 carbon atoms, X is a straight carbon chain having 4 to 6 carbon atoms which contains at least one double or triple bond, which have excellent vitamin D.sub.3 -like activities, particularly anti-tumor activity owing to differentiation-inducing activity and are useful for the prophylaxis and treatment of various tumors, and intermediates therefor.
    Type: Grant
    Filed: June 5, 1991
    Date of Patent: April 27, 1993
    Assignee: Daikin Industries, Ltd.
    Inventors: Nobuo Ikekawa, Yoshiro Kobayashi, Takeo Taguchi, Yoko Tanaka, Yutaka Ohira
  • Patent number: 5185459
    Abstract: Cyclobutanols of the formula ##STR1## wherein P is a hydroxy protecting group are useful intermediates in the preparation of antiviral compounds.
    Type: Grant
    Filed: May 26, 1992
    Date of Patent: February 9, 1993
    Assignee: E. R. Squibb & Sons Inc.
    Inventors: William A. Slusarchyk, Robert Zahler
  • Patent number: 5169896
    Abstract: A curable composition comprises a compound having at least two hydroxyl groups and a homopolymer or a copolymer of a polymerizable compound represented by formula (I):A--X--COCOOR.sub.1 (I)wherein R.sub.1 represents a hydrogen atom, a C.sub.1 -C.sub.5 alkyl group or an aryl group; X represents an oxygen atom, a sulfur atom, --COO-- or --NR.sub.5 -- wherein R.sub.5 is a hydrogen atom or a C.sub.1 -C.sub.5 alkyl group; A represents a C.sub.3 -C.sub.18 alkenyl, alkynyl, alkenylaryl or alkenylaralykyl group, or a group represented by: ##STR1## wherein R.sub.2 and R.sub.3, which may be the same or different, independently represent a hydrogen atom or a C.sub.1 -C.sub.5 alkyl groups; Y represents an oxygen atom or --NR.sub.4 -- wherein R.sub.4 represents a hydrogen atom or a C.sub.1 -C.sub.5 alkyl group; n is an integer of 1 to 5;m is an integer of 1 to 10; and 1 is 0 or an integer of 1 to 20;with the proviso that if Y is present, X is not --NR.sub.5 --.
    Type: Grant
    Filed: April 1, 1992
    Date of Patent: December 8, 1992
    Assignee: Nippon Paint Co., Ltd.
    Inventors: Satoshi Urano, Kei Aoki, Nobuaki Tomita, Hirohiko Mori
  • Patent number: 5162561
    Abstract: Compositions and a method of delivering a humectant to a surface such as skin by forming a reaction product of the humectant with an organosilicon compound. The reaction product is applied to the skin surface and contacted with moisture which causes the reaction product to undergo hydrolysis on the skin surface. This releases free humectant onto the skin surface and the silanol functional organosilicon compound formed as a result of the hydrolysis can be utilized on the skin surface as a durable water repellent and softening ingredient for the skin.
    Type: Grant
    Filed: February 6, 1992
    Date of Patent: November 10, 1992
    Assignee: Dow Corning Corporation
    Inventors: Andrew H. Ward, Stefan F. Rentsch, Alfred J. DiSapio
  • Patent number: 5159095
    Abstract: Novel silyl alcohols having bulky substituents bonded to the silicon, and the silyl group attached to a carbon include the preferred 2-silyl-ethan-1-ols. A method for synthesizing substituted alcohols include hydrosilation of a vinylic ester, especially vinyl acetate, followed by hydrolysis in mild base. The silyl alcohols are useful in preparing phosphorylating reagents for phosphorylating an oligonucleotide. The phosphorylated intermediate bearing the silyl group may be separated from failure product on the basis of bulky substituents on the silyl protecting group, which is later removed, e.g. by fluoride ion.
    Type: Grant
    Filed: June 7, 1991
    Date of Patent: October 27, 1992
    Assignee: Abbott Laboratories
    Inventor: Joseph E. Celebuski
  • Patent number: 5154912
    Abstract: The peroxides which include the O.sup.17 isotope, especially the hydrogen peroxides and peroxides and hydroperoxides prepared therefrom, are well adapted as nonradioactive labeled compounds for use in the medicinal and biological arts.
    Type: Grant
    Filed: September 20, 1990
    Date of Patent: October 13, 1992
    Assignee: Atochem
    Inventors: Jean-Pierre Schirmann, Jean-Jacques Barieux
  • Patent number: 5155250
    Abstract: This invention relates to certain 2,6-di-alkyl-4-silyl-phenols which are useful as inhibitors of LDL lipid peroxidation and as antiatherosclerotic agents.
    Type: Grant
    Filed: July 5, 1990
    Date of Patent: October 13, 1992
    Assignee: Merrell Dow Pharmaceuticals Inc.
    Inventors: Roger A. Parker, Simon J. T. Mao
  • Patent number: 5155228
    Abstract: A process is described for the improved synthesis of the optically pure C.sub.10 -C.sub.18 fragment of the macrolide structure of the immunosuppressant FK-506. This compound is also useful as an intermediate for preparing FK-506 derivatives.
    Type: Grant
    Filed: May 16, 1991
    Date of Patent: October 13, 1992
    Assignee: Merck & Co., Inc.
    Inventors: Todd K. Jones, Sander G. Mills, Richard Desmond
  • Patent number: 5153332
    Abstract: An organocyclosiloxane is disclosed which has both silicon-bonded alkoxy groups and organofunctional groups within each molecule. This cyclic siloxane finds utility as a coupling agent and has the general formula ##STR1## wherein R.sup.1 is independently selected from the group consisting of a monovalent hydrocarbon group having 1 to 8 carbon atoms and a monovalent halogen-substituted hydrocarbon group having 1 to 8 carbon atoms, R.sup.2 is selected from the group consisting of an alkoxy group and an alkoxysilylalkyl group, R.sup.3 is an organofunctional group selected from the group consisting of glycidoxyalkyl groups, methacryloxyalkyl groups, N-(trialkylsilyl)aminoalkyl groups, (hydroxyphenyl)alkyl groups, and haloalkyl groups and n and m each represent an integer having a value of 1 to 6 with the proviso that n+m is an integer with a value of 3 to 8.
    Type: Grant
    Filed: September 10, 1991
    Date of Patent: October 6, 1992
    Assignee: Dow Corning Toray Silicone Company, Ltd.
    Inventors: Hiroji Enami, Shoji Akamatsu
  • Patent number: 5149843
    Abstract: Conjugated diene compounds of the general formula: ##STR1## which are industrially advantageous intermediates for preparing sarcophytol A useful as an anticarcinogenic promotor or antitumor agent are provided.
    Type: Grant
    Filed: June 7, 1991
    Date of Patent: September 22, 1992
    Assignee: Mitsubishi Kasei Corporation
    Inventors: Hisao Takayanagi, Yasunori Kitano, Yasuhiro Morinaka
  • Patent number: 5144054
    Abstract: Novel siloxane derivatives represented by general formula (1): ##STR1## A method for producing the siloxane derivatives and agents such as cosmetic preparations, emulsifying dermatotherapeutic external agents and the like including at least one of the siloxane derivatives are also disclosed.
    Type: Grant
    Filed: August 27, 1991
    Date of Patent: September 1, 1992
    Assignee: Kao Corporation
    Inventors: Yasushi Shioya, Yuji Suzuki, Ken Takeuchi, Koji Yoshino, Akira Kawamata
  • Patent number: 5132345
    Abstract: An ion-selective polymeric membrane for an electrochemical sensor for use in analytical chemistry, comprisinga) a supporting matrix e.g. of PVC, andb) an ionophore selected from calixarene or oxacalixarene derivatives of the formula IV ##STR1## wherein n+m=3-8;m=0-8;n=0-8;a, which may be the same or different on each aryl group, is 0 or 1;R.sup.2 is alkyl, aryl, alkaryl, alkoxy, alkoxyalkoxy, aryloxy, alkaryloxy, alicyclic, alkylthio, arylthio, alkarylthio, or a substituted derivative thereof;R.sup.3 is --H, alkyl or alkenyl;X is --OH or a group containing an acrylate or methacrylate functional group;provided that when X is --OH, n is at least 1/2(n+m);and provided that when m=0, n=4, a=0 and R.sup.3 is alkyl or allyl, R.sup.2 is not alkoxy having 4 or more carbon atoms in the alkyl group;and provided that when m=0, n=4, a=0 and R.sup.3 is t-butyl, R.sup.2 is not methoxy or ethoxy;or of the formula V ##STR2## wherein R.sup.
    Type: Grant
    Filed: December 10, 1990
    Date of Patent: July 21, 1992
    Inventors: Stephen J. Harris, Michael A. McKervey, Gyula Svehla, Dermot Diamond
  • Patent number: 5130461
    Abstract: There is provided a novel organosilicon compound, 1,3-bis(p-hydroxybenzyl)-1,1,3,3-tetramethyldisiloxane. It is prepared by silylating 1,3-bis(p-methoxybenzyl)-1,1,3,3-tetramethyldisiloxane with trimethylsilyl iodide, followed by desilylation.
    Type: Grant
    Filed: June 5, 1991
    Date of Patent: July 14, 1992
    Assignee: Shin-Etsu Chemical Company Limited
    Inventors: Toshio Shinohara, Makoto Satoh
  • Patent number: 5130460
    Abstract: A hydroxyphenyl group-containing siloxane compound represented by the following general formula (I), containing at least one R.sup.2 in a molecule to acquire an aptitude for modification of polycarbonate and polyester resins: ##STR1## wherein R represents an alkyl group containing 1 to 4 carbon atoms; R.sup.3 represents a monovalent organic group containing 1 to 20 carbon atoms; R.sup.1 represents R or R.sup.2 ; R.sup.2 represents ##STR2## m and n are each 0 or a positive integer, provided that m+n is 1 or above, and at least one R.sup.1 is R.sup.2 when n is 0.
    Type: Grant
    Filed: February 27, 1990
    Date of Patent: July 14, 1992
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Masanao Kamei, Shoji Ichinohe
  • Patent number: 5117044
    Abstract: The invention provides a polymerizable compound represented by the formula (I):A--X--COCOOR.sub.1wherein A represents a C.sub.1 -C.sub.18 alkenyl, alkynyl, alkenylaryl or alkenylaralkyl group, or a group represented bywherein R.sub.2 and R.sub.3, which are the same or different, represent a hydrogen atom or a C.sub.1 -C.sub.5 alkyl group, Y represents an oxygen atom or --NR.sub.4 --, in which R.sub.4 represents a hydrogen atom or a C.sub.1 -C.sub.5 alkyl group, n is an integer of 1 to 5, m is an integer of 1 to 10 and 1 is 0 or an integer of 1 to 20;R.sub.1 represents a hydrogen atom, a C.sub.1 -C.sub.5 alkyl group or an aryl group; andX represents an oxygen atom, a sulfur atom, --COO-- or --NR.sub.5 --, in which R.sub.5 is a hydrogen atom or a C.sub.1 -C.sub.5 alkyl group, provided that if Y is present, X is not --NR.sub.5 --,its production and polymers prepared therefrom.
    Type: Grant
    Filed: January 12, 1990
    Date of Patent: May 26, 1992
    Assignee: Nippon Paint Co., Ltd.
    Inventors: Satoshi Urano, Kei Aoki, Nobuaki Tomita, Hirohiko Mori
  • Patent number: 5113005
    Abstract: Novel silyl alcohols having bulky substituents bonded to the silicon, and the silyl group attached to a carbon include the preferred 2-silyl-ethan-1-ols. A method for synthesizing silyl substituted alcohols include hydrosilation of a vinylic ester, especially vinyl acetate, followed by hydrolysis in mild base. The silyl alcohols are useful in preparing phosphorylating reagents for phosphorylating an oligonucleotide. The phosphorylated intermediate bearing the silyl group may be separated from failure product on the basis of bulky substituents on the silyl protecting group, which is later removed, e.g. by fluoride ion.
    Type: Grant
    Filed: June 7, 1991
    Date of Patent: May 12, 1992
    Assignee: Abbott Laboratories
    Inventor: Joseph E. Celebuski
  • Patent number: 5101059
    Abstract: This invention relates to compounds of the formula a compound of the formula ##STR1## wherein X is O, CR.sub.7 R.sub.8, S or NR.sub.9 wherein R.sub.7 and R.sub.8 are independently hydrogen, or lower alkyl, and R.sub.9 is lower alkyl;n is 0 or 1;R.sub.1 and R.sub.2 are independently hydrogen, lower alkyl, monoorganosilyl, diorganosilyl, triorganosilyl, halogen, aryl, or nitro;R.sub.3 is hydrogen, lower alkyl, monoorganosilyl, diorganosilyl, triorganosilyl, halogen, 9-fluorenylalkyl, cycloalkyl, aryl or aralkyl;R.sub.4 and R.sub.5 are independently hydrogen, lower alkyl, or aryl or one of R.sub.4 and R.sub.5 is 9-fluorenyl;R.sub.6 is H or COZ wherein Z is an amino acid, a peptide residue or a leaving group; andwith the provisos that when n is 0 and R.sub.3 is hydrogen, R.sub.1 and R.sub.2 are not hydrogen, halogen or nitro; that when n is 0 and R.sub.3 is lower alkyl, R.sub.1 and R.sub.2 are not hydrogen; and that when X is O or CR.sub.7 R.sub.8 wherein R.sub.7 and R.sub.8 are H, that R.sub.1, R.sub.2, R.sub.
    Type: Grant
    Filed: December 5, 1989
    Date of Patent: March 31, 1992
    Assignee: Research Corporation Technologies, Inc.
    Inventors: Louis A. Carpino, An-Chuu Wu
  • Patent number: 5093519
    Abstract: Vitamin D derivatives corresponding to the following formula I ##STR1## in which R.sub.1 denotes a substituted alkyl group having 1 to 15 carbon atoms, in particular the side chains of vitamin D.sub.2 (C.sup.20 to C.sup.28) or D.sub.3 (C.sup.20 to C.sup.
    Type: Grant
    Filed: May 1, 1989
    Date of Patent: March 3, 1992
    Assignee: Ire-Medgenix S.A.
    Inventors: Roger Bouillon, Pierre J. De Clercq, Pierre Eliard, Maurits Vandewalle
  • Patent number: 5059707
    Abstract: A hydroxyl group-containing organosilicon compound represented by formula (I) ##STR1## wherein R which may be the same or different each represents an alkyl group, an aryl group, or an alkenyl group, and n is 0 or an integer of 1 to 1,000. The compound can be suitably used for modification of surface properties of synthetic resins.
    Type: Grant
    Filed: March 27, 1990
    Date of Patent: October 22, 1991
    Assignee: Toshiba Silicone Co., Ltd.
    Inventors: Hisao Motegi, Takeshi Sunaga, Michio Zenbayashi
  • Patent number: 5059704
    Abstract: There is disclosed a herbicidal composition in which a foliar-applied herbicide is activated by the inclusion of a silicone glycol-silicone alkane terpolymer adjuvant. The composition provides enhanced phytotoxicity in the control of narrowleaf weeds, particularly Barnyardgrass, Quackgrass and Johnsongrass, and often also shows an improved degree of rainfastness relative to similar herbicidal compositions employing prior art silicone glycol adjuvants.
    Type: Grant
    Filed: September 12, 1990
    Date of Patent: October 22, 1991
    Assignee: Dow Corning Corporation
    Inventors: Lenin J. Petroff, David J. Romensko, Robert A. Ekeland
  • Patent number: 5037855
    Abstract: Provided herein is an optically active alcohol having a silyl group, stannyl group, or halogen atom at the .gamma.-position, selected from compounds represented by the general formula [I], ##STR1## the general formula [II], ##STR2## the general formula [III], ##STR3## and the general formula [IV], ##STR4## (where, R denotes a C.sub.1 -C.sub.10 substituted or unsubstituted alkyl group or substituted or unsubstituted phenyl group; A denotes a silyl group represented by ##STR5## a stannyl group represented by ##STR6## or a halogen atom. R.sup.1, R.sup.2, and R.sup.3 are substituted or unsubstituted C.sub.1 -C.sub.10 alkyl groups or substituted or unsubstituted phenyl group, which may be the same or different, provided that this does not apply in the case where A represents a stannyl group or halogen atom in the general formulas [III] and [IV].); a process for producing the same, and a process for resolving the optically active alcohol into isomers of high optical purity.
    Type: Grant
    Filed: November 17, 1989
    Date of Patent: August 6, 1991
    Assignee: Nissan Chemical Industries, Ltd.
    Inventor: Fumie Sato
  • Patent number: 5011962
    Abstract: Organosiloxanes (1) of the general formulaR.sup.1.sub.4-n Si(OSiR.sub.3).sub.n,in which R is the same or different and represents a hydrogen atom or a monovalent hydrocarbon radical having from 1 to 18 carbon atom(s) per radical or a substituted monovalent hydrocarbon radical having from 1 to 18 carbon atom(s) per radical, R.sup.1 represents R or a chlorine atom, and n is 3 or 4, are prepared by reacting organodisiloxanes (2) of the general formula(R.sub.3 Si).sub.2 O,with chlorosilanes (3) of the general formulaR.sub.4-n SiCl.sub.n,in which R and n are the same as above, in the presence of phosphonitrile chlorides (4) and cocatalysts (5), in which the cocatalysts (5) are used concomitantly with the phosphonitrile chlorides (4) and are selected from the group consisting of amides of the general formulaX--C(O)--R.sup.2,in which R.sup.
    Type: Grant
    Filed: May 30, 1990
    Date of Patent: April 30, 1991
    Assignee: Wacker-Chemie GmbH
    Inventors: Gerhard Staiger, Johann Muller, Walter Doskocil
  • Patent number: 5003023
    Abstract: The present invention relates to olefin polymer compositions which can be extruded into film material characterized by improved stability and optical properties. In particular, this application is directed olefin polymer compositions containing specific polyorganosiloxanes bearing a hydroxyl functionality.
    Type: Grant
    Filed: March 22, 1990
    Date of Patent: March 26, 1991
    Assignees: Union Carbide Chemicals, Plastics Technology Corporation
    Inventors: George N. Foster, Herbert E. Petty, Charles H. Blevins, II, Roswell E. King, III
  • Patent number: 4990633
    Abstract: New fluorinated bisaryloxy-substituted alkenes are prepared by reaction of substituted phenols with perhaloalkenes and can be used as electrical insulating agents.
    Type: Grant
    Filed: May 4, 1989
    Date of Patent: February 5, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Michael Negele, Dietmar Beilefeldt, Thomas Himmler, Albrecht Marhold
  • Patent number: 4977291
    Abstract: A process of producing a silanic or siloxanic compound containing at least one cycloalkyl ring by the hydrogenation of a corresponding compound containing at least one aromatic ring, in the presence of a Raney nickel catalyst having a granulometry comprised essentially between 10 and 150 micrometers and a surface area of at least 80 m.sup.2 /g.
    Type: Grant
    Filed: September 15, 1989
    Date of Patent: December 11, 1990
    Assignee: Istituto Guido Donegani S.p.A.
    Inventors: Francesco Gementi, Loris Sogli, Raffaele Ungarelli
  • Patent number: 4965376
    Abstract: 3,9-Dihydroxynonyne and its derivatives protected at the 9-OH function, of the general formula I ##STR1## where R is hydrogen or a conventional alcohol protective group, and processes for the preparation of the compounds I.
    Type: Grant
    Filed: April 18, 1989
    Date of Patent: October 23, 1990
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael Huellmann, Rainer Becker, Gerald Lauterbach, Ernst Buschmann, Heinz Eckhardt, Walter Himmele, Christiane Brueckner
  • Patent number: 4957607
    Abstract: Cycloalkyl silane compounds such as cyclohexyl methyl dichlorosilane can be efficiently prepared by the photochemically induced hydrosilylation reaction. For example, an equimolar mixture of cyclohexene and methyl dichlorosilane with admixture of a catalytic amount of a platinum catalyst, which is an alcohol complex of chloroplatinic acid, is irradiated at a temperature of 70.degree. C. with ultraviolet light so that the hydrosilylation reaction takes place and proceeds almost to completeness without deactivation of the platinum catalyst to give the desired product in a yield of 90% or even higher. Unexpectedly, the efficiency of the reaction can be greatly increased when the platinum catalyst is prepared by heating a solution of chloroplatinic acid in 2-ethylhexyl alcohol at 50.degree. to 80.degree. C. for at least 4 hours.
    Type: Grant
    Filed: July 17, 1989
    Date of Patent: September 18, 1990
    Assignee: Shin Etsu Chemical Co., Ltd.
    Inventors: Mikio Endo, Minoru Takamizawa, Toshinobu Ishihara, Tohru Kubota, Toshio Shinohara
  • Patent number: 4948888
    Abstract: Stabilizers for organic polymers are disclosed, of the type of sterically hindered phenols or amines, which are obtained by means of the reaction of a sterically hindered phenol or amine bearing in the molecule at least in alkoxysilanol group with a mono- or poly-hydroxy aliphatic alcohol, by a transesterification reaction.The stabilizers so obtained are compatible with the organic polymers, wherein they remain stably.
    Type: Grant
    Filed: July 27, 1987
    Date of Patent: August 14, 1990
    Assignee: Enichem Sintesi S.p.A.
    Inventors: Alberto Greco, Luciano Pallini
  • Patent number: 4940696
    Abstract: A benzonaphthalene compound has the formula ##STR1## wherein R.sub.1 represents ##STR2## or (ii) --CH.sub.2 OH; R.sub.6 represents ##STR3## or OR.sub.7 wherein R.sub.7 represents hydrogen, alkyl having 1-20 carbon atoms, monohydroxyalkyl or polyhydroxyalkyl, r' or r" represent hydrogen, lower alkyl, mono or polyhydroxyalkyl, aryl or a residue of an amino acid or a sugar, or together form a heterocycle; R.sub.2 represents hydrogen, alkyl having 1-15 carbon atoms, alkoxy having 1-4 carbon atoms or a cycloaliphatic radical; R.sub.3 represents hydrogen, hydroxy, alkyl having 1-4 carbon atoms, alkoxy having 1-10 carbon atoms, a cycloaliphatic radical, a thiocycloaliphatic radical or --O--Si(CH.sub.3).sub.2 --R.sub.8 wherein R.sub.8 represents lower alkyl; and R.sub.4 and R.sub.5 represent hydrogen, lower alkyl, hydroxy or lower acyloxy.This compound is useful in the topical and systemic treatment of dermatologic diseases and in the treatment of the degeneration of conjunctive tissues.
    Type: Grant
    Filed: November 16, 1987
    Date of Patent: July 10, 1990
    Assignee: Centre International de Recherches Dermatologioues (CIRD)
    Inventors: Braham Shroot, Jacques Eustache, Jean-Michel Bernardon
  • Patent number: 4885372
    Abstract: New cyclopentane derivatives of the formula I ##STR1## in which R.sup.1 is H or a hydroxyl protective group, andR.sup.2 and R.sup.3 are together an O atom or are together a bond, can be used in the preparation of prostaglandin derivatives.
    Type: Grant
    Filed: September 19, 1986
    Date of Patent: December 5, 1989
    Assignee: Merck Patent Gesellschaft mit Beschrankter Haftung
    Inventors: Bernhard Riefling, Hans Witzel
  • Patent number: 4883569
    Abstract: Cycloalkyl silane compound such as cyclohexyl methyl dichlorosilane can be efficiently prepared by the photochemically induced hydrosilylation reaction. For example, an equimolar mixture of cyclohexene and methyl dichlorosilane with admixture of a catalytic amount of an alcoholic solution of, chloroplatinic acid, is irradiated at a temperature up to 70.degree. C. with ultraviolet light so that the hydrosilylation reaction takes place and proceeds almost to completeness without deactivation of the platinum catalyst to give the desired product in a yield of 90% or even higher.
    Type: Grant
    Filed: February 11, 1988
    Date of Patent: November 28, 1989
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Mikio Endo, Minoru Takamizawa, Toshinobu Ishihara, Tohru Kubota, Toshio Shinohara
  • Patent number: 4882451
    Abstract: The present invention provides optically active compounds and a process for producing the optically active compounds by a biochemical method in which specific compounds having hydroxyl or acyloxy groups are reacted with esters in the presence of hydrolase. The compounds have the following general formula: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are selected from alkyl groups having 1-4 carbon atoms and phenyl groups, X is selected from a hydrogen atom and ##STR2## R is selected from alkyl groups having 1-20 carbon atoms, and C* indicates an asymmetric carbon atom.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: November 21, 1989
    Assignee: Chisso Corporation
    Inventors: Naoyuki Yoshida, Masakazu Kaneoya, Manabu Uchida
  • Patent number: 4876399
    Abstract: The present invention is directed to novel taxols useful as a chemotherapeutic agent. Moreover, the present invention is directed to the process of preparing taxols and various intermediates in said process. A key intermediate is this process is 2,5-dihydroxy-2-patchoulenes. Therefore the present invention is also related to said intermediate and the process for its preparation.
    Type: Grant
    Filed: November 2, 1987
    Date of Patent: October 24, 1989
    Assignee: Research Corporation Technologies, Inc.
    Inventors: Robert A. Holton, Rouh-Rong Juo, Richard Lowenthal
  • Patent number: 4841084
    Abstract: The present invention relates to new hexacoordinate silicon complexes, the process for their preparation and their application.These new complexes correspond to the general formula I: ##STR1## in which: A represents an alkali metal or alkaline earth metal except for magnesium, andn=0 or 1.
    Type: Grant
    Filed: December 24, 1985
    Date of Patent: June 20, 1989
    Assignee: Centre National de la Recherche Scientifique
    Inventors: Robert J. Corriu, Genevieve E. Cerveau, Claude G. Chuit, Catherine Reye
  • Patent number: 4839443
    Abstract: A polysiloxane compound modified with two hydroxyl groups at the one end thereof and particularly suitable for improving the surface characteristics of resins prepared by polycondensation of a polyol with another polyfunctional compound, and a silicone-modified polyurethane having superior characteristics such as low frictional properties, water repellency, oil repellency, thrombosis resistance, etc. and also a process for producing the polyurethane are provided, which polysiloxane compound expressed by the formula ##STR1## wherein R represents H, Me (methyl) or Et (ethyl) and n represents an integer of 0 to 4,000, and which silicone-modified polyurethane is obtained from a compound having at least two isocyanate groups and a compound having at least two hydroxyl groups, and by using as a part of the compound having at least two hydroxyl groups, the polysiloxane compound of the above formula (I) in the urethane bond-forming reaction.
    Type: Grant
    Filed: January 14, 1988
    Date of Patent: June 13, 1989
    Assignee: Chisso Corporation
    Inventors: Yoshinori Akutsu, Takaharu Nakano, Takahiro Saho, Nobumasa Ohtake, Hirofumi Yasuda, Tamio Kimura
  • Patent number: 4783495
    Abstract: ((Hydroxyphenyl)silane derivatives of the formula ##STR1## are effective in stabilizing organic materials against oxidative, thermal and actinic degradation, said derivatives being particularly effective as process stabilizers in organic materials containing phenolic antioxidants.
    Type: Grant
    Filed: November 20, 1987
    Date of Patent: November 8, 1988
    Assignee: Ciba-Geigy Corporation
    Inventors: Stephen D. Pastor, Edward T. Hessell
  • Patent number: 4745169
    Abstract: There are provided an alkali-soluble siloxane polymer, an alkali-soluble silmethylene polymer, and an alkali-soluble polyorganosilsesquioxane polymer. They are useful as a photoresist for the fabrication of semiconductor devices. They are suitable for dry etching because of their superior resistance to oxygen plasmas.
    Type: Grant
    Filed: May 5, 1986
    Date of Patent: May 17, 1988
    Assignee: Hitachi, Ltd.
    Inventors: Hisashi Sugiyama, Kazuo Nate, Takashi Inoue, Akiko Mizushima
  • Patent number: 4705887
    Abstract: Aromatic polyvinylethers and active hydrogen compound reaction products thereof have been found to provide fast heat curable molding compositions when used with various heat activated curing catalysts, for example, diaryliodonium salts in combination with aromatic polyvinylether soluble copper compounds, or dialkylhydroxyarylsulfonium salts in combination with certain organic oxidants.
    Type: Grant
    Filed: April 1, 1985
    Date of Patent: November 10, 1987
    Assignee: General Electric Company
    Inventor: James V. Crivello
  • Patent number: 4703127
    Abstract: Compounds of the general formula I are disclosed as useful intermediates in the preparation of prostanoids: ##STR1## wherein A represents O or H, OR.sup.z ;R.sup.z represents hydrogen or a protecting group;R.sup.x represents hydrogen or a protecting group; andR.sup.y represents halogen, a substituted thio group, di-substituted amino group, or a group of the formula R.sup.2, and R.sup.2 represents a straight- or branched-chain alkyl alkenyl or alkynyl group which may optionally be substituted by one or more carboxyl, carboxylic acid ester, or free or protected hydroxyl, thiol, aldehyde or keto groups;with the provisos that R.sup.x is not hydrogen when A is O and R.sup.y is R.sup.2 ; and that when A is H, OR.sup.z R.sup.y and R.sup.2 and R.sup.x and R.sup.z are not both hydrogen.Processes for the preparation of these compounds and of 2-substituted 4-hydroxy-cyclopent-2-en-1-one derivatives are also disclosed.
    Type: Grant
    Filed: September 2, 1983
    Date of Patent: October 27, 1987
    Assignee: The Australian National University
    Inventors: Rodney W. Rickards, Melvyn Gill, Robert M. Christie
  • Patent number: 4689383
    Abstract: Hydroxyl-functional disiloxanes and hydroxyl-functional polysiloxane oligomers are provided which contain hydroxyl groups bound to the silicon via Si--C bonds. These compounds may be crosslinked to form polysiloxane networks having improved mechanical strength or reacted to form linear, siloxane containing block copolymers.
    Type: Grant
    Filed: March 18, 1986
    Date of Patent: August 25, 1987
    Assignee: Thoratec Laboratories Corp.
    Inventors: Judy S. Riffle, Iskender Yilgor
  • Patent number: 4658044
    Abstract: Compounds of formula (C) ##STR1## where either R.sup.D represents a hydroxymethyl group and R.sup.E represents a hydroxyl group or R.sup.D represents a protected hydroxymethyl group and R.sup.E represents a protected hydroxyl group or R.sup.E represents a hydroxyl group and R.sup.D represents an ethenyl group and R.sup.F represents a hydroxyl or protected hydroxyl group or a leaving group with the proviso that either R.sup.D represents a protected hydroxymethyl group and R.sup.E represents a protected hydroxyl group or R.sup.F represents a protected hydroxyl group, which compounds are of use as intermediates in the preparation of compounds having antiviral activity.
    Type: Grant
    Filed: October 24, 1985
    Date of Patent: April 14, 1987
    Assignee: Glaxo Group Limited
    Inventor: Paul Ravenscroft
  • Patent number: 4648982
    Abstract: Stabilizers for silicate corrosion inhibitors useful in polyalkylene glycol antifreeze compositions are provided comprising an organosiloxane containing a polyoxyalkylene end chain.
    Type: Grant
    Filed: September 18, 1985
    Date of Patent: March 10, 1987
    Assignee: BP Chemicals Limited
    Inventor: Serjio Gritti
  • Patent number: 4642362
    Abstract: A linear or cross-linked polymer selected from polythioethers, polyethers, styrenic polymers, polyacrylates, and polyorganosiloxanes having a plurality of calixarene groups bound thereon, the calixarene groups having the formula ##STR1## where the R.sup.1 groups are the same or different H or hydrocarbyl groups; the R.sup.2 groups are H, hydrocarbyl, --CH.sub.2 C(.dbd.O)OR.sup.3, --CH.sub.2 C(.dbd.O)R.sup.3, or --C(.dbd.O)NHR.sup.3, R.sup.3 is hydrocarbyl or substituted hydrocarbyl; n is an integer of 1-8, m is an integer of 0-7 and n+m is 4-8.
    Type: Grant
    Filed: March 28, 1985
    Date of Patent: February 10, 1987
    Assignee: Loctite (Ireland) Limited
    Inventors: Stephen J. Harris, John G. Woods, John M. Rooney
  • Patent number: 4604480
    Abstract: A method for the preparation of a first sulfone compound of the formula: ##STR1## wherein R.sub.a is ##STR2## where R.sub.b is Br and R.sub.c is H except that R.sub.b and R.sub.c together may be an electron pair when R.sub.6 is a radical of the formula: ##STR3## wherein X.sub.1 is independently chlorine, bromine or iodine and R.sub.1 and R.sub.2 are independently at each occurrence hydrogen or, substituted or unsubstituted, phenyl or alkyl where the substituents are halogen or alkoxy or additional --SO.sub.2 Br groups; provided that, each carbon atom of R.sub.1 or R.sub.2 which contains --SO.sub.2 Br also contains an X.sub.1 group and wherein R.sub.3 through R.sub.9 are independently --OZ,--C.sub.6 M.sub.5,--Z,--SiZ.sub.3 or --X.sub.2, where Z is hydrogen or substituted or unsubstituted phenyl, alkyl, alkenyl or alkynyl; X.sub.2 is chlorine, bromine, iodine or fluorine; M is independently at each occurrence Z or X.sub.2 ; R.sub.3 and R.sub.4 may together be an electron pair; two or more of R.sub.3, R.sub.
    Type: Grant
    Filed: August 15, 1983
    Date of Patent: August 5, 1986
    Assignee: The Research Foundation of State University of New York
    Inventors: Eric Block, Mohammad Aslam