Organic compounds (class 532, subclass 1) > Heterocyclic carbon compounds containing a hetero ring having chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) or nitrogen as the only ring hetero atoms (class 540, subclass 1) > Hetero ring is five-membered consisting of one nitrogen and four carbons (e.g., halopyrrolidines, etc.) > Polycyclo ring system having the five-membered hetero ring as one of the cyclos > Tetracyclo ring system having the five-membered hetero ring as one of the cyclos > Plural ring hetero atoms in the tetracyclo ring system > Plural chalcogens bonded directly to ring carbons of the five-membered hetero ring (e.g., cyclic imides, etc.) > Patents

Resources

Home

Browse by:

Browse by Category: Main > Chemistry

Class Information
Number: 548/423
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Heterocyclic carbon compounds containing a hetero ring having chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) or nitrogen as the only ring hetero atoms (class 540, subclass 1) > Hetero ring is five-membered consisting of one nitrogen and four carbons (e.g., halopyrrolidines, etc.) > Polycyclo ring system having the five-membered hetero ring as one of the cyclos > Tetracyclo ring system having the five-membered hetero ring as one of the cyclos > Plural ring hetero atoms in the tetracyclo ring system > Plural chalcogens bonded directly to ring carbons of the five-membered hetero ring (e.g., cyclic imides, etc.)
Description: Compounds wherein at least two chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) atoms are bonded directly to ring carbons of the five-membered hetero ring.

Patents under this class:

1 2

Patent Number	Title Of Patent	Date Issued
7332487	Nitrogen-containing 5-membered ring compound	Feb. 19, 2008
7132434	Metalloproteinase inhibitors	Nov. 7, 2006
6967215	Tetrahydrocarbazoles, a process for the preparation of those compounds, and the use thereof	Nov. 22, 2005
6699899	Substituted acylhydroxamic acids and method of reducing TNF.alpha. levels	Mar. 2, 2004
6162822	Bisimide compounds	Dec. 19, 2000
6107345	Benzocyclobutane compounds	Aug. 22, 2000
6030967	Naphtholactams and lactones as bone morphogenetic protein active agents	Feb. 29, 2000
5786379	Adamantyl-substituted biaromatic compounds and pharmaceutical/cosmetic compositions comprised thereof	Jul. 28, 1998
5728709	Alkyl and aralkyl-substituted pyrrolocarbazole derivatives that stimulate platelet production	Mar. 17, 1998
5721267	Chemotherapeutic pyrrolocarbazole derivatives	Feb. 24, 1998
5693822	Epoxy resins based on diaminobisimide compounds	Dec. 2, 1997
5674432	Photochromic naphthopyran compounds	Oct. 7, 1997
5616666	Bismaleimide compounds	Apr. 1, 1997
5523411	Synthesis of mitomycin and its analogs	Jun. 4, 1996
5514685	Heteroatom-containing tricyclic compounds	May. 7, 1996
5451344	Photochromic naphthopyran compounds	Sep. 19, 1995
5418232	Diazabicycloalkene derivatives	May. 23, 1995
5310909	Photochromic compounds, a process for their preparation, and their use	May. 10, 1994
5296610	N-substituted polyamide-imides	Mar. 22, 1994
5264538	Cyclic poly(aryl ether) oligomers	Nov. 23, 1993
5242551	Electron induced transformation of an isoimide to an n-imide and uses thereof	Sep. 7, 1993
5166204	Isoindole derivatives and salts thereof and antitumor agent comprising the same	Nov. 24, 1992
5106980	Preparation of quinophthalones	Apr. 21, 1992
5068243	Bicyclic tetrahydroxypyrrolizidine	Nov. 26, 1991
5003078	Synthesis of phthalonitrile resins containing ether and imide linkages	Mar. 26, 1991
4999369	Tetracyclic heterocyclic derivatives, pharmaceutical compositions and use	Mar. 12, 1991
4992460	Bicyclic tetrahydroxylated pyrrolizidines	Feb. 12, 1991
4977158	Dibenzoxepinon and dibenzothiepino-pyridinol or - pyrrotol derivatives with anti-depressant action	Dec. 11, 1990
4912107	Pyrrolocarbazole derivatives, compositions containing them, and methods for using them	Mar. 27, 1990
4874803	Dianhydride coupled polymer stabilizers	Oct. 17, 1989
4585876	Novel xanthones and thioxanthones	Apr. 29, 1986
4528373	Vinylacetylene-terminated polyimide derivatives	Jul. 9, 1985
4520198	Vinylacetylene-terminated polyimide derivatives	May. 28, 1985
4517364	Vinylacetylene-terminated polyimide derivatives	May. 14, 1985
4517363	Vinylacetylene-terminated polyimide derivatives	May. 14, 1985
4435323	Vinylacetylene-terminated polymide derivatives	Mar. 6, 1984
4405519	Di-Acetylene-terminated polyimide derivatives	Sep. 20, 1983
4405786	Addition products of di-acetylene-terminated polyimide derivatives and an dienophile having ethylene groups	Sep. 20, 1983
4405521	Addition products of di-acetylene-terminated polyimide derivatives with a polyimide having terminal ethylenic groups	Sep. 20, 1983
4405520	Addition products of di-acetylene-terminated polymide derivatives and dienophiles having terminal maleimide grops	Sep. 20, 1983
4404139	Addition products of terminally unsaturated polyimide derivatives with a diaryl conjugated butadiyne	Sep. 13, 1983
4377673	Polymerization products of di-acetylene-terminated polyimide derivatives	Mar. 22, 1983
4377525	Addition products of diacetylene-terminated polyimide derivatives and a dienophile having a terminal vinyl group	Mar. 22, 1983
RE30922	Vinyl end-capped polyimide oligomers	May. 4, 1982
4255313	Novel end-capped polyimide oligomers	Mar. 10, 1981
4251417	Novel acetylene end-capped polyimide oligomers	Feb. 17, 1981
4251418	Polyimide oligomers	Feb. 17, 1981
4251419	Novel vinyl end-capped polyimide oligomers	Feb. 17, 1981
4251420	End-capped polyimide oligomers	Feb. 17, 1981
4206106	Vinyl end-capped polyimide oligomers	Jun. 3, 1980