Dibenzofurans (including Hydrogenated) Patents (Class 549/460)
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Patent number: 5846995Abstract: The invention provides substituted-2-amino-1,2,3,4-tetrahydrodibenzofurans and 2-aminocyclohepta?b!benzo-furans useful as 5-HT.sub.1F agonists.Type: GrantFiled: August 25, 1997Date of Patent: December 8, 1998Assignee: Eli Lilly and CompanyInventors: Michael E. Flaugh, Anton D. Kiefer, Jr.
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Patent number: 5840980Abstract: A diamine compound of the following formula (1): ##STR1## wherein R.sub.1 is a hydrogen atom, a lower alkyl group or a lower alkoxy group, each of A.sub.1, A.sub.2 and A.sub.3 which are independent of one another, is a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a group of the following formula (2): ##STR2## wherein R.sub.1 is as defined above, and X is a substituted or unsubstituted arylene group or a substituted or unsubstituted heterocyclic bivalent group.Type: GrantFiled: July 24, 1997Date of Patent: November 24, 1998Assignee: Hodogaya Chemical Co., Ltd.Inventors: Mitsutoshi Anzai, Atsushi Takesue, Takanobu Watanabe, Chieko Inayoshi
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Patent number: 5840927Abstract: Novel anti-microbial sesquiterpene compounds isolated from the fruit bodies of Roseofomes subflexibilis (Hounen-take) having the general formula ##STR1##Type: GrantFiled: September 26, 1997Date of Patent: November 24, 1998Assignee: Toa Gosei Co., Ltd.Inventors: Shigeo Nozoe, Akira Takahashi, Jun-ich Masuda, Ken-ichi Tanaka, Hideo Suzuki
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Patent number: 5739360Abstract: The invention relates to novel bisphosphonates and to processes for their preparation and for their resolution into the enantiomers. The bisphosphonates according to the invention are valuable intermediates for the preparation of bisphosphine compounds, especially chiral bisphosphine ligands. These in turn are constituents of transition metal complexes which are used as catalysts inter alia in asymmetric hydrogenation.The novel bisphosphonates have the general formula (I) ##STR1## in which R.sup.1 is linear or branched alkyl having up to 6 carbon atoms, aryl or aralkyl, each of which can optionally be substituted, or two radicals R.sup.1 together are a bridging hydrocarbon radical having up to 6 carbon atoms,and can exist in the form of their racemates or as enantiomers.Type: GrantFiled: September 16, 1996Date of Patent: April 14, 1998Assignee: Bayer AktiengesellschaftInventors: Wolfram Sirges, Christian Laue, Dieter Arlt, Rolf Grosser
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Patent number: 5716986Abstract: This invention relates to new oxaindene derivatives, a process for the preparation thereof and pharmaceutical compositions comprising the same.The compounds according to the invention are characterized by the general formula (1) ##STR1## wherein R.sup.1 represents lower C.sub.1-4 alkyl, lower C.sub.1-4 alkoxy or lower C.sub.3-6 cycloalkyl,R.sup.2 stands for hydrogen, lower C.sub.1-4 alkyl or lower C.sub.3-6 cycloalkyl,R.sup.3 stands for hydrogen, lower C.sub.1-4 alkyl, lower C.sub.1-4 alkoxy or benzyloxy,X denotes hydrogen, an aliphatic C.sub.1-4 -acyl or benzoyl or naphthoyl group, optionally substituted by 1 or more nitro or C.sub.1-4 -alkoxy group(s) or a group of the formula R.sup.5 R.sup.6 N--R.sup.7 --, wherein R.sup.7 represents lower C.sub.1-4 alkylene and R.sup.5 and R.sup.6 each represent lower C.sub.1-4 alkyl, or R.sup.5 and R.sup.Type: GrantFiled: June 27, 1996Date of Patent: February 10, 1998Assignee: Egis Gyogyszergyar Rt.Inventors: Csaba Szantay, Lajos Novak, Peter Kovacs, Klara Gado, Gabor Gigler, Julianna Takacs nee Bitai, Andras Egyed, Daniel Bozsing, Gyorgy Pirok, Katalin Szemeredi, Margit Csorgo, Sandor Drabant, Gabor Blasko, Gyula Simig, Gabor Kovacs
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Patent number: 5665764Abstract: Tricyclic compounds are described as well as methods for the preparation and pharmaceutical compositions of same, which are useful as inhibitors of matrix metalloproteinases, particularly gelatinase A (72 kD gelatinase) and stromelysin-1 and for the treatment of multiple sclerosis, atherosclerotic plaque rupture, aortic aneurism, heart failure, restenosis, periodontal disease, corneal ulceration, cancer metastasis, tumor angionenesis, arthritis, or other autoimmune or inflammatory disorders dependent upon tissue invasion by leukocytes.Type: GrantFiled: June 2, 1995Date of Patent: September 9, 1997Assignee: Warner-Lambert CompanyInventors: Donald Hupe, Linda Lea Johnson, Joseph Armand Picard, Andrew David White, Qi-Zhuang Ye
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Patent number: 5631401Abstract: The present invention provides a compound of the formula ##STR1## or a pharmaceutically acceptable salt thereof, which are useful in inhibiting protein farnesyltransferase and the farnesylation of the oncogene protein Ras or inhibiting de novo squalene production resulting in the inhibition of cholesterol biosynthesis, processes for the preparation of the compounds of the invention in addition to intermediates useful in these processes, a pharmaceutical composition, and to methods of using such compounds.Type: GrantFiled: January 24, 1995Date of Patent: May 20, 1997Assignee: Abbott LaboratoriesInventors: Herman H. Stein, William R. Baker, Anthony K. L. Fung, Saul H. Rosenberg, Todd W. Rockway, Stephen A. Fakhoury, David S. Garvey, B. Gregory Donner, William J. McClellan, Stephen J. O'Connor, Rajnandan Prasad, Wang Shen, Gerard M. Sullivan
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Patent number: 5543422Abstract: Heterocyclic amines of the formulaAr-X-A-NR.sup.1 R.sup.2wherein Ar is a bicyclic or tricyclic aromatic group which is unsubstituted or which bears one or more substituents selected from halo, nitro and cyano groups and alkyl and alkoxy groups each of up to 4 carbon atoms;wherein X is a direct link or is --O--, --S--, --SO-- or --SO.sub.2 -- or has the formula --C(R.sup.3).dbd.CH-- wherein R.sup.3 is hydrogen or alkyl of up to 4 carbon atoms;wherein A is straight or branched alkylene or alkenylene of 3 to 8 carbon atoms which may be interrupted by --O--, --S-- or --NH--;and wherein NR.sup.1 R.sup.2 is a cyclic amino group;or a pharmaceutically acceptable acid addition salt thereof, are of value for therapeutic use, particularly in the treatment of myocardial ischaemia and hypertension and in the treatment of fungal infections.Type: GrantFiled: March 23, 1995Date of Patent: August 6, 1996Assignee: British Technology Group LimitedInventors: Ian G. C. Coutts, Pamela J. Cummins
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Patent number: 5541333Abstract: Novel tethered hapten intermediates and related conjugates based on carbazole and/or dibenzofuran, as well as methods for making and using such conjugates. Haptens based on the above core structures may be substituted at any position on the aromatic rings with a wide variety of substituents. Using tethered intermediates, immunogens, tracers, solid supports and labeled oligonucleotides are all described; as are methods for using the intermediates to prepare the conjugates, methods of using the conjugates to make and purify antibodies, as assay tracers, and in nucleic acid hybridization assays. Kits containing haptenated oligonucleotides and anti-hapten conjugates are also described.Type: GrantFiled: April 13, 1995Date of Patent: July 30, 1996Assignee: Abbott LaboratoriesInventor: James R. Fino
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Patent number: 5516790Abstract: Provided is a method of inhibiting estrogen activity by administering a biologically active amount of a substituted dibenzofuran or substituted dibenzodioxin.Type: GrantFiled: July 19, 1994Date of Patent: May 14, 1996Assignee: Texas A&M University System Technology Licensing OfficeInventor: Stephen H. Safe
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Patent number: 5496849Abstract: The present invention discloses sulfonamide derivative represented by the following general formula: ##STR1## [wherein, R.sub.1 is(i) --COOR.sub.2 (where, R.sub.2 is (1) hydrogen, (2) a pharmacologically acceptable cation, or (3) an alkyl having 1 to 14 carbon atoms) or,(ii) --C(.dbd.O)--R.sub.3 (wherein, R.sub.3 represents an alkyl having 1 to 4 carbon atoms); A is(i) --(CH.sub.2)n-- (wherein, n represents an integer of 0 to 3),(ii) --CH.dbd.CH--, or the group:(iii) --O--C(R.sub.4) (R.sub.5)-- (wherein, R.sub.4 and R.sub.5 represent (1) hydrogen or (2) an alkyl having 1 to 4 carbon atoms, and R.sub.4 and R.sub.5 may be identical or different); and,w is NH or --O--], as well as a thromboxane A2 receptor antagonistic drug having said derivative for its active ingredient.Since the compound of the present invention has excellent thromboxane A2 receptor antagonistic action, it can be used as a thromboxane A2 receptor antagonist of high activity and long duration.Type: GrantFiled: May 17, 1994Date of Patent: March 5, 1996Assignee: Toray Industries, Inc.Inventors: Kiyotaka Ohno, Atsushi Ohtake, Shintaro Nishio, Kazuhiro Hoshi, Shunji Tsukamoto
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Patent number: 5489603Abstract: An insecticidal composition containing a guanidine derivative of the formula: ##STR1## wherein R.sup.1 is an optionally substituted homocyclic or heterocyclic group, n is 0 or 1, R.sup.2 is a hydrogen atom or an optionally substituted hydrocarbon group, R.sup.3 is a primary, secondary or tertiary amino group, X is an electron attractive group such as nitro or trifluoroacetyl group, provided that when n is 0, R.sup.1 is an optionally substituted heterocyclic group or a salt thereof.Type: GrantFiled: July 15, 1993Date of Patent: February 6, 1996Assignee: Takeda Chemical Industries, Ltd.Inventors: Hideki Uneme, Koichi Iwanaga, Noriko Higuchi, Isao Minamida, Tetsuo Okauchi
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Patent number: 5405873Abstract: There are provided substituted acetamide derivatives represented by general formula (I): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, R.sup.8, R.sup.9, R.sup.10, R.sup.11, R.sup.12, R.sup.13, n and Z are defined in the specification. The substituted acetamide derivatives strongly inhibit acylcoenzyme A cholesterol acyltransferase (ACTA) and are expected to be effective for the treatment and prevention of hypercholesterolemia, hyperlipemia and arteriosclerosis.Type: GrantFiled: September 7, 1993Date of Patent: April 11, 1995Assignee: Banyu Pharmaceutical Co., Ltd.Inventors: Yoshikazu Iwasawa, Hiromi Hattori, Yasufumi Nagata, Akiko Shimizu, Yoshio Sawasaki
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Patent number: 5371248Abstract: Monoalkylated benzofuran adducts provide high temperature stable lubricant fluids having not only excellent thermal stability, but good low-temperature properties and excellent additive solubility as well.Type: GrantFiled: February 22, 1993Date of Patent: December 6, 1994Assignee: Mobil Oil CorporationInventor: Leslie R. Rudnick
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Patent number: 5334333Abstract: The present invention relates to electroactive compounds capable of undergoing a change in light absorption and refraction due to an applied electric field and a permanent change in refraction due to exposure to predetermined bands of optical radiation. The present invention also relates to electroactive compositions containing such electroactive compounds, electrooptical components comprised of such electroactive compositions and electrooptical devices comprised of such electrooptical components, as well as novel processes of making the same.Type: GrantFiled: December 17, 1990Date of Patent: August 2, 1994Assignee: Elf Atochem North America, Inc.Inventor: Frederick J. Goetz
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Patent number: 5268492Abstract: An optically active diphosphine having a bicyclo[2.2.1]heptane of the formula ##STR1## where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are difined in the specification and a metal complex comprising said optically active diphosphine are disclosed. A process for producing or purifying said optically active diphosphine is disclosed.Type: GrantFiled: August 27, 1992Date of Patent: December 7, 1993Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Keiji Yamamoto, Masahiro Miyazawa, Satoru Momose
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Patent number: 5237116Abstract: A process and catalyst are disclosed for the catalyzed reaction of an organometallic reagent with a reactive halide in the presence of a diphosphine complex of a nickel carboxylate or sulfonate. The process can be employed in the synthesis of aromatic compounds such as bisbenzocyclobutenes.Type: GrantFiled: April 3, 1991Date of Patent: August 17, 1993Assignee: Shell Oil CompanyInventor: Larry S. Corley
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Patent number: 5192799Abstract: Amine represented by the following formula (1), or their acid addition salts or their quaternary ammonium salts. ##STR1## The amines of formula (1) or their pharmaceutically acceptable acid addition salts or quaternary ammonium salts are useful for the treatment and prevention of heart diseases of animals, particularly arrhythima, myocardial infarction, angina pectoris and heart failure and psychoneurological diseases.Type: GrantFiled: June 5, 1992Date of Patent: March 9, 1993Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Ikuo Tomino, Masaharu Ishiguro, Takumi Kitahara, Keiichi Yokoyama, Noriaki Kihara, Joji Kamiya, Kanji Yoshihara, Masaaki Ishii, Akira Mizuchi, Kazutoshi Horikomi, Akira Awaya, Takuo Nakano
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Patent number: 5185460Abstract: Aminoacetonitrile derivatives, where the 2-position of aminoacetonitrile is optionally substituted by alkylthio groups, arylthio groups and heterocyclicthio groups. The process for making such compounds comprises reacting hydrogen cyanide with the desired corresponding R-S-H and recovering the crystallized salt thereof. The aminoacetonitrile derivatives are useful as starting materials to produce pharmaceutical and agricultural intermediates such as benzomide derivatives with fungicidal and herbicidal activities.Type: GrantFiled: April 22, 1992Date of Patent: February 9, 1993Assignee: Nippon Soda Co., Ltd.Inventors: Seiji Tazaki, Nobuhiro Umeda, Nobuo Matsui, Tomio Yagihara, Katsunori Mikuma
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Patent number: 5162365Abstract: This invention encompasses compounds and methods for inhibiting lipoxygenase and includes a pharmaceutical composition comprising a pharmaceutical carrier and an effective lipoxygenase inhibiting amount of a compound of the formula: ##STR1## wherein the substituents are defined below. The compounds and pharmaceutical formulations of the present invention are 5-lipoxygenase inhibitors and, therefore, are useful in the treatment of local and systemic inflammation, allergy and hypersensitivity reactions and other disorders in which agents formed in the 5-lipoxygenase metabolic pathway are involved.Type: GrantFiled: May 10, 1991Date of Patent: November 10, 1992Assignee: G. D. Searle & Co.Inventors: Leland J. Chinn, Bipinchandra N. Desai, Richard A. Mueller
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Patent number: 5102905Abstract: The invention concerns heterocyclic nitromethane derivatives of the formula 1 as defined hereinafter (and their non-toxic salts) wherein the heterocyclic moiety Q is thienyl, benzothienyl or dibenzothienyl and may bear a wide variety of optional substituents, together with pharmaceutical compositions containing them. The nitromethane derivatives are inhibitors of the enzyme aldose reductase and are of value in the treatment of certain complications of diabetes and galactosemia.Type: GrantFiled: April 28, 1989Date of Patent: April 7, 1992Assignee: Imperial Chemical Industries PLCInventors: Steven P. Brown, Anthony L. Cooper, Jethro L. Longridge, Jeffrey Morris, John Preston
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Patent number: 5049581Abstract: The present invention relates to compounds of formula(I) ArCh.sub.Type: GrantFiled: August 25, 1989Date of Patent: September 17, 1991Assignee: Burroughs Wellcome Co.Inventor: Kenneth W. Bair
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Patent number: 5026726Abstract: A compound of the chemical formula ##STR1## wherein n is 1 or 2, X is NH and O, and R.sub.1 and R.sub.2 are H, (C.sub.1 -C.sub.12) alkyl, (C.sub.2 -C.sub.12)alkenyl, (C.sub.2 -C.sub.12)alkynyl, (C.sub.2 -C.sub.12)acyl, (C.sub.6 -C.sub.12)aryl or (C.sub.7 -C.sub.21)alkylaryl, salts thereof and a composition thereof. In vivo and in vitro methods of inhibiting the growth of a virus relying on the effect of the above compound. In vitro and in vivo methods of inhibiting the growth of the HIV-1 virus comprising administering a compound of the formula ##STR2## wherein n is 1 or 2, X is NH or O, and R.sub.1 and R.sub.2 are independently of one another H, (C.sub.1 -C.sub.12)alkyl, (C.sub.2 -C.sub.12)alkenyl, (C.sub.2 -C.sub.12)alkynyl, (C.sub.2 -C.sub.12)acyl, (C.sub.6 -C.sub.12)aryl or (C.sub.7 -C.sub.21)alkylaryl, R.sup.3 is C.dbd.N or COR.sup.5, wherein R.sup.5 is selected from the group consisting of H, (C.sub.1 -C.sub.12) alkyl, alenyl or alkynyl, HO, NH.sub.2 and (C.sub.2 -C.sub.12) alkoxy, and R.sup.Type: GrantFiled: December 11, 1989Date of Patent: June 25, 1991Assignee: The University of New MexicoInventors: David L. Jagt, Robert E. Royer
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Patent number: 5019573Abstract: Novel substituted dibenzofuran compounds are disclosed. The compounds exhibit activity in antagonizing the effects of leukotriene B.sub.4 (LTB.sub.4). Pharmaceutical compositions containing the novel compounds and methods of treatment employing the same are also described.Type: GrantFiled: September 19, 1989Date of Patent: May 28, 1991Assignee: Euroceltique, S.A.Inventors: T. Scott Shoupe, David C. Baker, Stephen M. Coutts, Elli S. Hand
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Patent number: 4990630Abstract: The present invention relates to a 2,3-diaminoacrylonitrile derivative or salts thereof, having the formula ##STR1## wherein R represents an alkyl group (which may be substituted by unsubstituted or substituted phenyl groups, halogen atoms, C.sub.1-6 alkoxycarbonyl groups, carboxy groups, C.sub.1-6 alkoxycarbonyl C.sub.1-6 alkylthio groups, hydroxy groups, mercapto groups, cycloalkyl groups or heterocyclic groups containing oxygen atoms); an alkenyl group; a cycloalkyl group; an aryl group (which may be substituted by halogen atoms, C.sub.1-6 alkyl groups, nitro-groups, unsubstituted or substituted phenyl or phenoxy groups or heterocyclic groups containing oxygen atoms or sulfur atoms).The 2,3-diaminoacrylonitrile derivative can be used as starting materials for the production of pharmaceutical and/or agricultural intermediates such as cyanoimidazoles, cyanopyrazines or other cyano-substituted heterocycles.Type: GrantFiled: August 28, 1989Date of Patent: February 5, 1991Assignee: Nippon Soda Co., Ltd.Inventors: Katsunori Mikuma, Nobuhiro Umeda, Tomio Yagihara, Isami Hamamoto
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Patent number: 4978679Abstract: Positions 7- and/or 6-substituted 1,2,3,4,4a,9b-Hexahydro-8-hydroxydibenzofuran-3-ols and analogs of that general structure are described.These compounds are found to be potent inhibitors of 5-lipoxygenase, an enzyme crucial to the biosynthesis of leukotrienes and useful in the treatment of a variety of inflammatory conditions.Type: GrantFiled: September 25, 1989Date of Patent: December 18, 1990Assignee: Merck & Co., Inc.Inventors: Kathleen M. Rupprecht, Joshua S. Boger
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Patent number: 4847392Abstract: A method of conducting a Diels-Alder reaction is provided comprising reacting a Diels-Alder diene comprising a 1,3-conjugated diene with a dienophile comprising an alpha,beta-unsaturated acetal or ketal in the presence of a protonating acid to yield a [4+2] cycloadduct.Type: GrantFiled: March 17, 1987Date of Patent: July 11, 1989Assignee: Regents of the University of MinnesotaInventors: Paul G. Gassman, Daniel A. Singleton
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Patent number: 4838924Abstract: This invention relates to novel compounds of formula [I], a process for their production, and their use as a herbicide. ##STR1## wherein A represents the bond ##STR2## in which X is a hydrogen atom, a chlorine atom, a nitro group or a trifluoromethyl group;B represents a hydrogen atom, a methyl group or a methoxy group; andAr represents one member selected from the group consisting of ##STR3## in which R.sup.1 to R.sup.38, are as defined hereinafter.Type: GrantFiled: April 1, 1987Date of Patent: June 13, 1989Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Tetsuo Takematsu, Daisuke Fukuoka, Katsuya Takahashi, Isao Hashimoto
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Patent number: 4769370Abstract: The invention relates to novel (1,2-dichloro-8-oxo-5a-substituted-5a,6,7,8-tetrahydrodibenzofuran-3-yl)al kanoic acids and alkanimidamides, their derivatives and their salts. The compounds are useful for the treatment and prevention of injury to the brain and of edema due to head trauma, stroke (particularly ischemic), arrested breathing, cardiac arrest, Reye's syndrome, cerebral thrombosis, cerebral embolism, cerebral hemorrhage, cerebral tumors, encephalomyelitis, spinal cord injury, hydrocephalus, post-operative brain injury trauma, edema due to cerebral infections including that due to AIDS virus, various brain concussions and elevated intracranial pressure.Type: GrantFiled: September 24, 1986Date of Patent: September 6, 1988Assignee: Merck & Co., Inc.Inventors: Otto W. Woltersdorf, Jr., Edward J. Cragoe, Jr.
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Patent number: 4668690Abstract: This invention relates to 1,2,3,4,4a,9b-hexahydro-4a-aminoalkyldibenzofurans of the formula ##STR1## where X is hydrogen, loweralkyl, F and Cl; R.sub.1 is hydrogen, loweralkyl, arylloweralkyl, loweralkenyl, loweralkoxyloweralkyl, aryloxyloweralkyl, cycloalkylloweralkyl and heteroarylloweralkyl: R.sub.2 is hydrogen, lower alkyl or R.sub.1 and R.sub.2 taken together with the N ring atom constitute a saturated or unsaturated heterocyclic ring having 5 or 6 members; R.sub.3 is hydrogen, lower alkyl; n is an interger of 1 to 3; and the pharmaceutically acceptable acid addition salts thereof and where applicable the stereo, optical and geometrical isomers of the foregoing.Type: GrantFiled: December 30, 1985Date of Patent: May 26, 1987Assignee: Hoechst Roussel Pharmaceuticals Inc.Inventor: Gregory M. Shutske
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Patent number: 4608127Abstract: Separation and recovery of dibenzofuran of high purity is accomplished by distilling a coal tar fraction having boiling point range of 220.degree. to 300.degree. C. thereby producing a dibenzofuran fraction having a dibenzofuran content of not less than 30% by weight, a dibenzofuran/acenaphthene molar ratio of not less than 1.3, and a fluorene/dibenzofuran molar ratio of not more than 0.05, then introducing the dibenzofuran fraction obtained as described above into a continuous crystallization purification unit provided with a cooling zone for crystallization of the feed, a heating zone for melting the purified crystals, and a refining zone for enabling crystals being transferred from said cooling zone to said heating zone to come into counter current contact with a mass of molten crystals midway along the path between said two zones, and subjecting the dibenzofuran fraction to continuous crystallization purification therein.Type: GrantFiled: May 28, 1985Date of Patent: August 26, 1986Inventors: Kiyoshi Sakuma, Tadao Tomioka, Sunao Tabuchi, Kihachiro Ohta, Masakazu Takeuchi
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Patent number: 4604128Abstract: The invention concerns novel compounds of the formula I ##STR1## wherein: m is an integer selected from 1 to 4;n is zero or an integer selected from 1 to 4;X are selected from halogen, nitro, cyano, alkyl, substituted alkyl, hydroxy, alkoxy, alkylthio, sulfamoyl, substituted sulfamoyl, amino, substituted amino, the group --(CH.sub.2).sub.p C(.dbd.A)Z in which p is zero or one A is oxygen or sulfur, and Z is hydrogen, hydroxy, alkoxy, alkylthio, alkyl, substituted alkyl, amino or substituted amino, the group --NHC(.dbd.B)NR.sup.7 R.sup.8 in which B is oxygen or sulfur and R.sup.7 and R.sup.8 are hydrogen or alkyl;R.sup.1 is selected from hydrogen, acyl and an inorganic or organic cation;R.sup.2 is selected from alkyl, substituted alkyl, alkenyl, haloalkenyl, alkynyl and haloalkynyl;R.sup.3 is selected from alkyl, fluoroalkyl, alkenyl, alkynyl, and phenyl; andR.sup.4 is selected from hydrogen, halogen, alkyl, cyano and alkoxycarbonyl.Type: GrantFiled: September 10, 1985Date of Patent: August 5, 1986Assignee: ICI Australia LimitedInventors: Keith G. Watson, John D. Wishart, Graeme J. Farquharson, Graham J. Bird, Lindsay E. Cross
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Patent number: 4567280Abstract: In a process for producing an iodo-aromatic compound which comprises iodinating an aromatic compound having an electron-donating substituent bonded to the benzene ring with iodine in the presence of a solvent, the improvement wherein about 1/2 to about 10 moles, per mole of iodine added to the reaction system, of nitrogen dioxide (NO.sub.2) is added in the form of NO.sub.2 to the reaction system, and the reaction is carried out in the presence of nitrogen dioxide.Type: GrantFiled: September 4, 1984Date of Patent: January 28, 1986Assignee: UBE Industries, Ltd.Inventors: Hiroshi Itatani, Mikito Kashima, Yasutaka Tasaki
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Patent number: 4513137Abstract: Mono- or bis(iodonium salts) are produced in neutral organic solvents by the reaction of an [hydroxy (organosulfonyloxy)iodo]arene with a bis(triorganosilyl)arene, a bis(trihalosilyl)arene, or with a mono- or bis(triorganosilyl)heterocyclic compound, or a mono- or bis(trihalosilyl)heterocyclic. The iodonium salts are made under conditions of regiospecific control.Type: GrantFiled: April 9, 1981Date of Patent: April 23, 1985Assignee: The University of AkronInventors: Gerald F. Koser, Carol S. Carman
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Patent number: 4495352Abstract: 1-Aryloxy-3-[(3-indolyl)-tert.-butyl]amino-2-propanols having a heterocyclic aryl-attached substituent or aryl-fused heterocyclic ring are antihypertensive agents having vasodilator and adrenergic .beta.-receptor blocking action.Type: GrantFiled: December 3, 1981Date of Patent: January 22, 1985Assignee: Mead Johnson & CompanyInventors: William E. Kreighbaum, William T. Comer
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Patent number: 4490550Abstract: A process for preparing dibenzofuran by the oxidation of diphenyl ether in the presence of a carboxylic acid and a catalyst composed of a compound of palladium and at least one compound of a member selected from the group consisting of antimony, tin, cobalt, lead, zinc, chromium and potassium is described.Type: GrantFiled: June 15, 1983Date of Patent: December 25, 1984Assignee: Ashland Oil, Inc.Inventor: Anil B. Goel
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Patent number: 4486610Abstract: A process is described for purifying the bacteriostat 2,4,4'-trichloro-2'-hydroxydiphenylether prepared by the diazotization of 2,4,4'-trichloro-2'-aminodiphenylether from the 2,4,8-trichlorodibenzofuran and associated nonphenolics which form. A selective solvent extraction for these non-phenolics consisting of tetrachlorethylene is used after neutralization of the hydrolyzed diazo product.Type: GrantFiled: February 7, 1983Date of Patent: December 4, 1984Assignee: Ciba-Geigy CorporationInventor: Richard B. Lund
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Patent number: 4409221Abstract: The present invention is dealing with compounds of the formula: ##STR1## and pharmaceutically acceptable salts thereof, in which R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are identical or different and represent hydrogen, halogen, lower alkyl or alkoxy or trifluoromethyl; R.sub.5 represents hydrogen or lower alkyl, X represents hydrogen and Y represents hydroxy, or X and Y together represent oxygen and Ar represents an optionally substituted aromatic moiety, having potent anti-bronchoconstrictor properties.Type: GrantFiled: June 9, 1982Date of Patent: October 11, 1983Assignee: Riom Laboratories - Cerm S.A.Inventors: Michel Combourieu, Jean-Claude Laigle, Norbert Busch
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Patent number: 4376776Abstract: Dibenzofuran derivatives of the formula ##STR1## where R.sup.1, R.sup.2, R.sup.3, X, A, Y, m, n, p and q have the meanings given in the description, and their use for controlling fungi.Type: GrantFiled: January 26, 1982Date of Patent: March 15, 1983Assignee: BASF AktiengesellschaftInventors: Costin Rentzea, Karl-Heinz Feuerherd, Bernd Zeeh, Hubert Sauter, Ernst-Heinrich Pommer
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Patent number: 4371467Abstract: A process for producing an isoindolinone pigment, which comprises hydrolyzing a salt formed from an isoindolinone compound of the formula ##STR1## wherein X represents a chlorine or bromine atom, R represents an aromatic group or a heterocyclic group, and m is 0 or an integer of 1 to 4, and a base, in water in the presence of an organic solvent not miscible freely with water.Type: GrantFiled: September 29, 1980Date of Patent: February 1, 1983Assignee: Dainippon Ink and Chemicals Inc.Inventors: Hirohito Ando, Naoki Furukawa
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Patent number: 4362883Abstract: Dibenzofuran is prepared by reacting diphenyl ether in an oxygen-containing atmosphere in the presence of a palladium carboxylate catalyst, a carboxlyic acid and a copper carboxylate promoter or co-catalyst.Type: GrantFiled: October 28, 1981Date of Patent: December 7, 1982Assignee: The Halcon SD Group, Inc.Inventor: Robert J. Harvey