Five-membered Alicyclic Ring Patents (Class 568/330)
  • Patent number: 4474809
    Abstract: Arylglyoxals which are new compounds active as hypoglycemic agents.
    Type: Grant
    Filed: January 20, 1983
    Date of Patent: October 2, 1984
    Assignee: American Cyanamid Company
    Inventors: Middleton B. Floyd, Jr., Vern G. DeVries
  • Patent number: 4466908
    Abstract: Described are isopropyl tetramethylindan musks defined according to the generic structure: ##STR1## wherein R.sub.3 and R.sub.4 are each acetyl or methyl with the provisos:(a) one of R.sub.3 or R.sub.4 is methyl;(b) when R.sub.4 is methyl, then R.sub.3 is acetyl and(c) when R.sub.4 is acetyl, R.sub.3 is methyland organoleptic uses thereof in augmenting or enhancing the aroma of perfume compositions, colognes and perfumed articles. Also described is a process for preparing same by means of first rearranging a tetralin derivative defined according to the structure: ##STR2## to form at least one compound defined according to the structure: ##STR3## and then reacting the compound having the structure: ##STR4## with a compound of the genus: ##STR5## wherein Z represents acetoxy, chloro or bromo in order to form at least one compound defined according to the structure: ##STR6## wherein one of R.sub.1 or R.sub.2 is methyl and the other of R.sub.1 or R.sub.2 is hydrogen.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: August 21, 1984
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Mark A. Sprecker, Robert P. Belko, Roger E. Greene
  • Patent number: 4465862
    Abstract: A method of producing a 4-hydroxycyclopentenone represented by the formula, ##STR1## wherein R.sub.1 is an alkyl, alkenyl, alkynyl, cycloalkyl, thienyl, phenyl, p-methylbenzyl or benzyl group and R.sub.2 is an alkyl, alkenyl or alkynyl group having 6 or less carbon atom, which comprises reacting a furylcarbinol compound of the formula, ##STR2## wherein R.sub.1 is as defined above, in the presence of an acid in a mixed solvent of water and an organic solvent, to obtain a cyclopentenone compound of the formula, ##STR3## wherein R.sub.1 is as defined above; reacting the cyclopentenone compound in the presence of an oxidizing agent to obtain a cyclopentendione compound of the formula, ##STR4## wherein R.sub.1 is as defined above; reacting the cyclopentendione compound with a Grignard reagent of the formula,R.sub.2 MgXwherein R.sub.2 is as defined above and X is chlorine, bromine or iodine atom, to obtain an oxocyclopentene compound of the formula, ##STR5## wherein R.sub.1 and R.sub.
    Type: Grant
    Filed: September 20, 1982
    Date of Patent: August 14, 1984
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Kenji Saito, Hiroshi Yamachika
  • Patent number: 4443478
    Abstract: Prostaglandin E.sub.1 analogues of general formula: ##STR1## [wherein R.sup.1 represents a bond or a straight- or branched-chain alkylene group containing from 1 to 5 carbon atom(s), and R.sup.2 represents a hydrogen atom, a straight- or branched-chain alkyl group containing from 1 to 8 carbon atom(s), a cycloalkyl group containing from 4 to 7 carbon atoms in the ring and unsubstituted or substituted by at least one stright- or branched-chain alkyl group containing from 1 to 8 carbon atom(s) or a phenyl or phenoxy group unsubstituted or substituted by at least one halogen atoms, trifluoromethyl group or straight- or branched-chain alkyl group containing from 1 to 4 carbon atom(s), with the proviso that, when R.sup.1 represents a bond, R.sup.2 does not represent a phenoxy group,] possess inhibitory activity or gastric ulceration and cytoprotective activity.
    Type: Grant
    Filed: June 28, 1982
    Date of Patent: April 17, 1984
    Assignee: Ono Pharmaceutical Co., Ltd.
    Inventors: Takashi Muryobayashi, Hajimu Miyake, Takashi Yamato
  • Patent number: 4436666
    Abstract: Enol derivatives of 2-aryl-1,3-cycloalkanedione compounds exhibit outstanding herbicidal and acarcidal activity.
    Type: Grant
    Filed: September 22, 1978
    Date of Patent: March 13, 1984
    Assignee: Union Carbide Corporation
    Inventor: Thomas N. Wheeler
  • Patent number: 4410705
    Abstract: A process for preparing substituted or unsubstituted benzoxazoline compound by reacting ammonia, a cycloalkanone and oxygen in the presence of metal cations.
    Type: Grant
    Filed: August 31, 1981
    Date of Patent: October 18, 1983
    Assignee: Allied Corporation
    Inventors: Divakaran Masilamani, Edward H. Manahan
  • Patent number: 4403100
    Abstract: The present invention provides novel (11R)-11-deoxy-11-alkyl-6-oxo-prostaglandins which are useful for curing and preventing duodenal ulcers and for preventing or treating gastrointestinal cell damage caused by the use of other pharmacological agents.
    Type: Grant
    Filed: October 30, 1981
    Date of Patent: September 6, 1983
    Assignee: The Upjohn Company
    Inventor: Douglas R. Morton, Jr.
  • Patent number: 4401831
    Abstract: There is disclosed substituted alkenones of Formula I ##STR1## wherein R.sup.1 is alkyl or acylamino each having 1 to 4 carbon atoms, hydrogen, or halogen,R.sup.2 and R.sup.3 individually are hydrogen, methyl or ethyl,R.sup.4 is hydrogen or dimethoxyphenyl, andn is 1 or 2,or physiologically acceptable acid addition salts thereof. Intermediates are also disclosed, along with methods of preparation of both the intermediates and the end products.The end products are useful as .beta. adrenolytic and anti-hypertensive agents. They are useful in the treatment of angina pectoris, hypertension, and arrhythmia.
    Type: Grant
    Filed: May 27, 1982
    Date of Patent: August 30, 1983
    Assignee: Beiersdorf Aktiengesellschaft
    Inventor: Erich Cohnen
  • Patent number: 4393079
    Abstract: Anti-inflammatory compositions are prepared which comprise a therapeutically effective amount of a compound of the formula ##STR1## wherein X is CO or CHOH; Y is CO; the dotted line represents a double bond which is present or absent; R.sub.1 is hydrogen or methyl; R.sub.2 is hydrogen, fluorine, chlorine, bromine, methyl, trifluoromethyl, methoxyl, hydroxyl, acetoxyl, nitro or amino; R.sub.3 is alkyl of 3 to 8 carbon atoms, cycloalkyl of 3 to 8 carbon atoms, alkenyl of 3 to 8 carbon atoms, cycloalkenyl of 5 to 8 carbon atoms or phenyl unsubstituted or substituted by 1 or 2 substituents selected from the group consisting of fluorine, chlorine, bromine, methyl, ethyl, methoxyl, ethoxyl, benzyloyl, hydroxyl, acetoxyl, trifluoromethyl, nitro, amino, acetyl, methylthiol, methylsulphonyl, methylamino and dimethylamino. Compounds of formula I above are also novel.
    Type: Grant
    Filed: December 15, 1976
    Date of Patent: July 12, 1983
    Assignee: Beecham Group Limited
    Inventors: William G. Cole, Alexander C. Goudie, Carl J. Rose
  • Patent number: 4391827
    Abstract: Cycloalkanones, cycloalkanols and unsaturated analogs thereof, each of which has at the 3-position a 2-hydroxy-4-substituted phenyl group wherein the 4-position substituent is alkyl which can have an oxygen atom as part of the chain, or aralkyl which can have an oxygen atom as part of the alkyl chain, their use for pharmacological and medicinal purposes, intermediates therefor and processes for their preparation.
    Type: Grant
    Filed: July 27, 1981
    Date of Patent: July 5, 1983
    Assignee: Pfizer Inc.
    Inventors: Charles A. Harbert, Michael R. Johnson, Lawrence S. Melvin, Jr.
  • Patent number: 4385185
    Abstract: Compounds of the general formula I: ##STR1## wherein R.sub.1 and R.sub.2 are equal or different alkyl-, alkoxyalkyl-, or aryl groups, or together form a ring; R.sub.3 is an allyl or benzyl radical; and R.sub.4 and R.sub.5 represent hydrogen, alkyl, alkoxyalkyl, alkenyl or further compounds of the formula II: ##STR2## wherein R.sub.1, R.sub.2, R.sub.4 and R.sub.5 have the meaning indicated above and R.sub.6 stands for hydrogen or methyl or to compounds which are modified by the addition of hydrogen to at least one olefinic or carbonylic double bond of compounds of the general formula I or II. The invention also relates to a process for preparing the new compounds. The compounds of the general formula II are obtained by thermal treatment of a selection of compounds of formula I, for which R.sub.3 stands for the allyl or methallyl radical. The compounds according to the invention are used as fragrant and flavoring substances.
    Type: Grant
    Filed: March 20, 1981
    Date of Patent: May 24, 1983
    Assignee: Consortium fur Elektrochemische Industrie GmbH
    Inventors: Helmut Gebauer, Walter Hafner
  • Patent number: 4357278
    Abstract: What are disclosed are a multi-step synthesis for the preparation of 9(11)-dehydroestrone 3-methyl ether from 2-methyl,4-methoxy benzaldehyde; 1-(4-methoxy-2-methyl-(phenyl)-3-(1-methyl-2-oxo-5-t-vinyl-cyclopent-r-yl) -propane-1-one, an intermediate in said synthesis; and a method for the preparation of 3-vinylcyclopentanone from 2-vinylcyclopropane-1,1-dicarboxylic acid.
    Type: Grant
    Filed: April 10, 1981
    Date of Patent: November 2, 1982
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Gerhard Quinkert, Wolf-Dietrich Weber, Ulrich Schwartz
  • Patent number: 4352748
    Abstract: Novel acyl-polyalkyl indan compounds and the use thereof as a base for perfume, as well as perfume compositions, perfumed materials and perfumed articles.
    Type: Grant
    Filed: March 12, 1981
    Date of Patent: October 5, 1982
    Assignee: Naarden International N.V.
    Inventors: Petrus C. Traas, Harrie Renes, Harmannus Boelens
  • Patent number: 4349690
    Abstract: The present invention provides novel 9-deoxy-9-methylene-6-keto-PGE derivatives which are useful for platelet aggregation inhibition and gastric cyctoprotection.
    Type: Grant
    Filed: April 23, 1981
    Date of Patent: September 14, 1982
    Assignee: The Upjohn Company
    Inventor: Gordon L. Bundy
  • Patent number: 4338122
    Abstract: 2-Aryl-1,3-cyclopentanedione compounds and their alkali metal and ammonium salts exhibit outstanding herbicidal and acaricidal activity.
    Type: Grant
    Filed: October 16, 1980
    Date of Patent: July 6, 1982
    Assignee: Union Carbide Corporation
    Inventor: Thomas N. Wheeler
  • Patent number: 4326055
    Abstract: This invention is directed to 5,6,7,8-tetrahydro-naphthyl or indanyl stilbene derivatives which are useful as tumor inhibiting agents, in the treatment of neoplasms, dermatological conditions and rheumatic illnesses.
    Type: Grant
    Filed: December 15, 1978
    Date of Patent: April 20, 1982
    Assignee: Hoffmann-La Roche Inc.
    Inventor: Peter Loeliger
  • Patent number: 4321275
    Abstract: The disclosure relates to novel 17,18,19,20-tetranor-prostanoic acid derivatives having prostaglandin-type properties, to a method for their manufacture, and also to pharmaceutical or veterinary compositions containing said novel derivatives and a method of inducing luteolysis in an animal host by use of said novel derivatives.
    Type: Grant
    Filed: May 30, 1974
    Date of Patent: March 23, 1982
    Assignee: Imperial Chemical Industries Limited
    Inventors: Jean Bowler, Neville S. Crossley
  • Patent number: 4310700
    Abstract: Prostaglandin analogs are disclosed that have the .alpha.-chain terminating with the group --CH(OR')OR" wherein R' and R" are the same or different and are hydrogen, C.sub.1 to C.sub.4 alkanoyl or optionally substituted benzoyl, the substituents selected from the group C.sub.1 to C.sub.4 alkyl, C.sub.1 to C.sub.4 alkoxy, halo and trifluoromethyl. These compounds are useful as hypotensive agents, gastric secretory and platelet aggregation enhibitors and bronchodilators.
    Type: Grant
    Filed: April 3, 1980
    Date of Patent: January 12, 1982
    Assignee: American Cyanamid Company
    Inventors: Allan Wissner, Middleton B. Floyd, Jr.
  • Patent number: 4308400
    Abstract: Aromatic-aliphatic ketones of the formulae I, II, III or IV ##STR1## wherein n is 1 or 2, Ar is an aryl radical, R.sup.1 and R.sup.2 are monvalent aliphatic, cycloaliphatic or araliphatic radicals, R.sup.3 is a direct bond or a divalent organic radical, X is a hydroxyl or amino group or the monovalent etherification or silylation products thereof, and X' is a divalent amino, ether or silyloxy group, Y is a direct bond or CH.sub.2 and Z is O, S, SO.sub.2, CH.sub.2 or C(CH.sub.3).sub.2, are suitable sensitizers for the photopolymerization of unsaturated compounds and for the photochemical crosslinking of polyolefins. Some of these compounds are novel and can be obtained by methods analogous to those for obtaining the known compounds of this type.
    Type: Grant
    Filed: December 28, 1979
    Date of Patent: December 29, 1981
    Assignee: Ciba-Geigy A.G.
    Inventors: Louis Felder, Rudolf Kirchmayr, Rinaldo Husler
  • Patent number: 4306097
    Abstract: Cycloalkanones, cycloalkanols and unsaturated analogs thereof, each of which has at the 3-position a 2-hydroxy-4-substituted phenyl group wherein the 4-position substituent is alkyl which can have an oxygen atom as part of the chain, or aralkyl which can have an oxygen atom as part of the alkyl chain, their use for pharmacological and medicinal purposes, intermediates therefor and processes for their preparation.
    Type: Grant
    Filed: September 8, 1980
    Date of Patent: December 15, 1981
    Assignee: Pfizer Inc.
    Inventors: Charles A. Harbert, Michael R. Johnson, Lawrence S. Melvin, Jr.
  • Patent number: 4301166
    Abstract: The invention relates to hydroxyethyl-azole compounds and methods for their preparation. Also included in the invention are compositions containing said hydroxyethyl-azole compounds and methods for the use of said compounds and compositions as antimycotic agents.
    Type: Grant
    Filed: November 9, 1979
    Date of Patent: November 17, 1981
    Assignee: Bayer Aktiengesellschaft
    Inventors: Erik Regel, Karl H. Buchel, Ingo Haller, Manfred Plempel
  • Patent number: 4297516
    Abstract: The invention disclosed herein relates to pharmacologically active prostaglandin derivatives of the E, F, or A series having on the terminal methylene carbon of the alpha chain, a substituent selected from the group consisting of: ##STR1## wherein R is C.sub.1 to C.sub.6 alkyl, and phenyl or phenyl substituted with one or more substituents selected from the group consisting of C.sub.1 -C.sub.4 alkyl, OR.sub.16, SR.sub.16, F, or Cl, and R.sub.16 is C.sub.1 to C.sub.6 alkyl.
    Type: Grant
    Filed: June 7, 1979
    Date of Patent: October 27, 1981
    Assignee: American Cyanamid Company
    Inventor: Allan Wissner
  • Patent number: 4296256
    Abstract: The present invention provides novel 2-decarboxy-2-hydroxymethyl-19-keto-PG compounds, which are useful for a variety of pharmacological purposes, e.g., antiasthmatic indications.
    Type: Grant
    Filed: March 20, 1980
    Date of Patent: October 20, 1981
    Assignee: The Upjohn Company
    Inventor: John C. Sih
  • Patent number: 4291174
    Abstract: Prostaglandin analogs are disclosed that have the .alpha.-chain terminating with the group --CH(OR')OR" wherein R' and R" are the same or different and are hydrogen, C.sub.1 to C.sub.4 alkanoyl or optionally substituted benzoyl, the substituents selected from the group C.sub.1 to C.sub.4 alkyl, C.sub.1 to C.sub.4 alkoxy, halo and trifluoromethyl. These compounds are useful as hypotensive agents, gastric secretory and platelet aggregation inhibitors and bronchodilators.
    Type: Grant
    Filed: April 3, 1980
    Date of Patent: September 22, 1981
    Assignee: American Cyanamid Company
    Inventors: Allan Wissner, Middleton B. Floyd, Jr.
  • Patent number: 4291175
    Abstract: Prostaglandin analogs are disclosed that have the .alpha.-chain terminating with the group --CH(OR')OR" wherein R' and R" are the same or different and are hydrogen, C.sub.1 to C.sub.4 alkanoyl or optionally substituted benzoyl, the substituents selected from the group C.sub.1 to C.sub.4 alkyl, C.sub.1 to C.sub.4 alkoxy, halo and trifluoromethyl. These compounds are useful as hypotensive agents, gastric secretory and platelet aggregation enhibitors and bronchodilators.
    Type: Grant
    Filed: April 3, 1980
    Date of Patent: September 22, 1981
    Assignee: American Cyanamid Company
    Inventors: Allan Wissner, Middleton B. Floyd, Jr.
  • Patent number: 4289910
    Abstract: Prostaglandin analogs are disclosed that have the .alpha.-chain terminating with the group --CH(OR')OR" wherein R' and R" are the same or different and are hydrogen, C.sub.1 to C.sub.4 alkanoyl or optionally substituted benzoyl, the substituents selected from the group C.sub.1 to C.sub.4 alkyl, C.sub.1 to C.sub.4 alkoxy, halo and trifluoromethyl. These compounds are useful as hypotensive agents, gastric secretory and platelet aggregation enhibitors and bronchodilators.
    Type: Grant
    Filed: April 3, 1980
    Date of Patent: September 15, 1981
    Assignee: American Cyanamid Company
    Inventors: Allan Wissner, Middleton B. Floyd, Jr.
  • Patent number: 4288629
    Abstract: Prostaglandin analogs are disclosed that have the .alpha.-chain terminating with the group --CH(OR')OR" wherein R' and R" are the same or different and are hydrogen, C.sub.1 to C.sub.4 alkanoyl or optionally substituted benzoyl, the substituents selected from the group C.sub.1 to C.sub.4 alkyl, C.sub.1 to C.sub.4 alkoxy, halo and trifluoromethyl. These compounds are useful as hypotensive agents, gastric secretory and platelet aggregation inhibitors and bronchodilators.
    Type: Grant
    Filed: April 3, 1980
    Date of Patent: September 8, 1981
    Assignee: American Cyanamid Company
    Inventors: Allan Wissner, Middleton B. Floyd, Jr.
  • Patent number: 4288630
    Abstract: Prostaglandin analogs are disclosed that have the .alpha.-chain terminating with the group --CH(OR')OR" wherein R' and R" are the same or different and are hydrogen, C.sub.1 to C.sub.4 alkanoyl or optionally substituted benzoyl, the substituents selected from the group C.sub.1 to C.sub.4 alkyl, C.sub.1 to C.sub.4 alkoxy, halo and trifluoromethyl. These compounds are useful as hypotensive agents, gastric secretory and platelet aggregation enhibitors and bronchodilators.
    Type: Grant
    Filed: April 3, 1980
    Date of Patent: September 8, 1981
    Assignee: American Cyanamid Company
    Inventors: Allan Wissner, Middleton B. Floyd, Jr.
  • Patent number: 4259529
    Abstract: The present invention provides novel 2-decarboxy-2-hydroxymethyl-19,20-didehydro-13,14-dihydro-PG.sub.1 compounds methods for their preparation and pharmacological use for the induction of prostaglandin-like effect.
    Type: Grant
    Filed: October 17, 1979
    Date of Patent: March 31, 1981
    Assignee: The Upjohn Company
    Inventor: John C. Sih
  • Patent number: 4259528
    Abstract: The present invention provides novel 2-decarboxy-2-hydroxymethyl-19,20-didehydro-PG.sub.1 compounds, methods for their preparation and pharmacological use for the induction of prostaglandin-like effect.
    Type: Grant
    Filed: October 17, 1979
    Date of Patent: March 31, 1981
    Assignee: The Upjohn Company
    Inventor: John C. Sih
  • Patent number: 4254285
    Abstract: The invention disclosed herein relates to pharmacologically active prostaglandin derivatives of the E, F, or A series having on the terminal methylene carbon of the alpha chain a substituent selected from the group consisting of: ##STR1## wherein R is an alkyl group and R.sub.15 is C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, di-C.sub.1 -C.sub.4 -alkylamino, and phenyl orphenyl substituted with one or more substituents selected from the group consisting of C.sub.1 -C.sub.4 alkyl, OR, SR, F, or Cl wherein R is as previously defined.
    Type: Grant
    Filed: January 16, 1979
    Date of Patent: March 3, 1981
    Assignee: American Cyanamid Company
    Inventor: Allan Wissner
  • Patent number: 4251466
    Abstract: Prostaglandin E (PGE)-type derivatives and analogs having a 6-keto feature are disclosed, including processes for preparing them and the appropriate intermediates, said derivatives having pharmacological activity.
    Type: Grant
    Filed: August 27, 1979
    Date of Patent: February 17, 1981
    Assignee: The Upjohn Company
    Inventor: Udo F. Axen
  • Patent number: 4235822
    Abstract: The present invention relates to novel 2-decarboxy-2-hydroxymethyl-6-keto-PG compounds, which are useful for inducing a variety of prostacyclin-like pharmacological effects. Accordingly, these compounds are useful pharmacological agents for the same purposes for which prostacyclin is employed.
    Type: Grant
    Filed: October 17, 1979
    Date of Patent: November 25, 1980
    Assignee: The Upjohn Company
    Inventor: Udo F. Axen
  • Patent number: 4225619
    Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is perfluoroalkyl of 1 to 8 carbon atoms or 2,2,3,3-tetrafluoro-cyclobutyl,R.sub.2 and R.sub.4, which may be identical to or different from each other, are each hydrogen, alkyl of 1 to 10 carbon atoms, aliphatic acyl of 2 to 18 carbon atoms, benzoyl, salicyloyl or phenylacetyl, andR.sub.3 and R.sub.5, which may be identical to or different from each other, are each alkyl of 3 to 18 carbon atoms, halogen, nitro, p-toluenesulfonyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclododecyl, methylcyclohexyl, dimethylcyclohexyl, benzyl, methylthio or ##STR2## where R.sub.1, R.sub.2 and R.sub.4 have the meanings previously defined,Q is --CH.sub.2 -- or --S--, andG is R.sub.5, as above defined, orQ is R.sub.3, as above defined, andG is --CH.sub.2 -- or --S--,R.sub.3 may, in addition, also be hydroxyl, methoxy, methyl or cyano, andR.sub.5 may also be methyl, orone of substituents R.sub.3 and R.sub.
    Type: Grant
    Filed: March 19, 1979
    Date of Patent: September 30, 1980
    Assignee: Boehringer Ingelheim GmBH
    Inventors: Rolf Brickl, Hans Eberhardt, Karl-Richard Appel, Uwe Lechner, Walter Merk
  • Patent number: 4221713
    Abstract: Cyclisation substrates are disclosed of the formula: ##STR1## wherein: (a) R.sub.1 is H or alkyl of one to four carbon atoms;(b) R.sub.2 is H or alkyl of one to four carbon atoms, with the proviso that R.sub.1 is H when R.sub.2 is alkyl, and with the proviso that R.sub.2 is H when R.sub.1 is alkyl;(c) R.sub.3 is a suitable leaving group selected from the group consisting of hydroxy, alkoxy of one to four carbons, alkoxyalkoxy of two to four carbons, acyloxy of one to about seven carbon atoms, and trialkylsilyloxy of less than fifteen carbons;(d) R.sub.4 is methyl; and(e) R.sub.5(1) and R.sub.
    Type: Grant
    Filed: October 23, 1978
    Date of Patent: September 9, 1980
    Assignee: Akzona Incorporated
    Inventors: Filippus J. Zeelen, Marinus B. Groen
  • Patent number: 4219489
    Abstract: Method and compounds are provided for use in the synthesis of steroids wherein a polyolefin is provided having an initiating group having a chalcogen atom in juxtaposition to a double bond, so as to be capable of bond formation to close to form a ring and having a terminating group involving pi unsaturation (a double or triple bond) conjugated to an aromatic ring. Upon acid catalysis, sigma bonds are formed through the interaction of a carbocation formed at the carbon atom bonded to the chalcogen atom and the double bond intermediate the initiating group and the terminating group, which close to form rings of a steroid nucleus, the carbocation interacting with the pi unsaturation conjugated with the aromatic group and being captured by a nucleophile present in the acidic reaction medium. The resulting steroid product may then be modified in known ways to produce known steroids.
    Type: Grant
    Filed: September 5, 1978
    Date of Patent: August 26, 1980
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: William S. Johnson, Leonard A. Bunes
  • Patent number: 4212969
    Abstract: Derivatives, analogs, and congeners of prostane having a 1-(hydroxymethyl)-1-oxo-prostane structure in the A.sub.2 series.
    Type: Grant
    Filed: December 8, 1977
    Date of Patent: July 15, 1980
    Assignee: American Cyanamid Company
    Inventor: Allan Wissner
  • Patent number: 4202822
    Abstract: Derivatives, analogs, and congeners of prostane having a 1-(hydroxymethyl)-1-oxo-prostane structure in the F.sub.1 series.
    Type: Grant
    Filed: December 8, 1977
    Date of Patent: May 13, 1980
    Assignee: American Cyanamid Company
    Inventor: Allan Wissner