摘要:
Novel 1-substituted-3-acylpyrrole derivatives of the formula ##STR1## wherein all symbols are as defined in the specification; and platelet aggregation inhibiting agents comprising them as active ingredients. These novel 1-substituted-3-acylpyrrole derivatives are prepared by condensing the corresponding 1-substituted pyrrole derivatives with the corresponding acylating agents in the presence of acid catalysts, and if desired, subjecting the products to oxidation, hydrolysis, amidation or acetal-forming reaction. These 1-substituted-3-acylpyrrole derivatives exhibit unique properties in that they have superior platelet aggregation inhibiting actions with low antiinflammatory activity.
摘要:
A 2,6,7-trisubstituted-3-methylenebicyclo-[3.3.0]octane of formula (I) or an enantiomer thereof, or a mixture of these in an arbitrary ratio. The compound is a key intermediate for preparation of isocarbacyclins which are useful as medicines for the circulatory system such as an antithrombotic agent, an antilipidemic agent, a hypotensive agent or an antiarterosclerotic agent.
摘要:
A novel process for manufacturing 16-substituted .DELTA..sup.7 -prostaglandin Es, which include compounds expressed by the following formula (I), their enanantiomers, or their mixtures of arbitray mixing ratio, ##STR1## wherein R.sup.1 indicates COOR.sup.2, CH.sub.2 OR.sup.3, in which R.sup.2 indicates a hydrogen atom, a dubstituted or unsubstituted C.sub.1 -C.sub.10 alkyl group, a substituted or unsubstituted C.sub.3 -C.sub.10 cycloalkyl group, or a substituted or unsubstituted phenyl group, and R.sup.3 indicates a hydrogen atom, a tri(C.sub.1 -C.sub.7) hydrocarbon silyl group, a group which forms an acetal bond together with the oxygen atom of a hydroxyl group, or a C.sub.2 -C.sub.7 acyl group; R.sup.4 and R.sup.5 are identical or different, each representing a hydrogen atom, a tri(C.sub.1 -C.sub.7 ) hydrocarbon silyl group, or a group which forms an acetal bond together with the oxygen atom of a hydroxyl group; R.sup.6 indicates a hydrogen atom, a C.sub.1 -C.sub.4 alkyl group, or a vinyl group; R.sup.7 indicates a linear or branched C.sub.3 -C.sub.8 alkyl group, an alkyenyl group, or an alkynyl group, which may contain an oxygen atom; a phenyl group, a phenoxy group, or a C.sub.3 -C.sub.10 cycloalkyl group, which may be substituted; or a linear or branched C.sub.1 -C.sub.5 alkyl group which is substituted by a C.sub.1 -C.sub.6 alkoxy group, a phenyl group a phenoxy group, or a C.sub.3 -C.sub.10 cycloalkyl group, which may be substituted; and Y indicates CH.sub.2 X or XCH.sub.2, in which X represents an ethylene group, a cis -or trans-vinylene group, or an ethynylene group.
摘要:
A compound selected from thiazolo[3,2-a]pyrimidines or their enolate derivatives represented by the following general formula ##STR1## wherein R.sup.1 and R.sup.2 are identical or different, and each represents a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, an alkenyl group having 3 to 10 carbon atoms, a substituted or unsubstituted phenyl group, a substituted or unsubstituted cycloaliphatic group having 3 to 8 carbon atoms, a substituted or unsubstituted phenylalkyl group or a substituted or unsubstituted acyl group having 2 to 7 carbon atoms, provided that R.sup.1 and R.sup.2 are not simultaneously hydrogen atoms or substituted or unsubstituted acyl groups having 2 to 7 carbon atoms; and R.sup.1 and R.sup.2, when taken together, may form, with the nitrogen atom to which they are bonded, a 5- or 6-membered ring which may further contain one or more hetero atoms;and acid addition salts of these compounds.The thiazolo[3,2-a]pyrimidines may be prepared by a process comprising (a) reacting a malonic acid derivative of the following general formula ##STR2## wherein R.sup.1 and R.sup.2 are as defined with regard to formula (I), and R.sup.4 and R.sup.5 are identical or different and each represents an alkyl group having 1 to 6 carbon atoms,with 2-aminothiazoline under heat, if desired in the presence of an inert organic solvent, to induce cyclocondensation, or (b) performing said condensation reaction in the presence of an alkali metal alkoxide, if desired in the presence of an inert organic solvent, and neutralizing the resulting enolate with an acid; and if desired, reacting the reaction product of (a) or (b) with an acid.The present invention provides also several processes for preparing enolate derivatives thereof.The thiazolo[3,2-a]pyrimidines, their enolate derivatives and acid addition compounds thereof are useful for regulating the immune function of a warm-blooded animal.
摘要:
1,3-Dicarbonyl compounds useful as medicines, agricultural chemicals, perfumes, and their intermediates are prepared by reacting a specific .alpha.,.beta.-unsaturated carbonyl compound with a specific organic copper lithium compound in the presence of an aprotic inert organic solvent, and then reacting the reaction product with an organic carboxylic acid halide or anhydride. In particular, novel 2-acyl-3-substituted cyclopentan-1-ones and 2-acyl-3-substituted cyclohexan-1-ones having important physiological activities are provided.
摘要:
A process for producing a 2,3-disubstituted-4-substituted cyclopentanone, an enantiomorph thereof, or a mixture of these in an arbitrary ratio.The process comprises (A) subjecting a 4-substituted-2-cyclopentenone, an enantiomorph thereof, or a mixture of these in an arbitrary ratio, and an organocopper compound to conjugate addition-reaction, and thereafter (B) reacting the resulting enolate intermediate with a halide in the presence of a phenyl organotin compound.
摘要:
7-thiaprostaglandins E.sub.1 which are compounds represented by the following formula [I] or their enantiomers or mixtures thereof in any ratio: ##STR1## where R.sup.1 represents a hydrogen atom, a C.sub.1 -C.sub.10 alkyl group, a C.sub.2 -C.sub.20 alkenyl group, a substituted or unsubstituted phenyl group, a substituted or unsubstituted C.sub.3 -C.sub.10 cycloalkyl group, a substituted or unsubstituted phenyl (C.sub.1 -C.sub.2) alkyl group, or one equivalent cation; R.sup.2 and R.sup.3, which may be the same or different, represent a hydrogen atom, a tri (C.sub.1 -C.sub.7) hydrocarbon silyl group, or a group forming an acetal linkage together with an oxygen atom of a hydroxyl group; R.sup.4 represents a hydrogen atom, a methyl group or a vinyl group; R.sup.5 represents a linear or branched C.sub.3 -C.sub.8 alkyl group, a linear or branched C.sub.3 -C.sub.8 alkenyl group, a linear or branched C.sub.2 -C.sub.8 alkynyl group, a phenyl group which may be substituted, a phenoxy group which may be substituted, a C.sub.3 -C.sub.10 cycloalkyl group which may be substituted, or a linear or branched C.sub.1 -C.sub.5 alkyl group which may be substituted with a C.sub.1 -C.sub.6 alkoxy group, a phenyl group which may be substituted, a phenoxy group which may be substituted or a C.sub.3 -C.sub.10 cycloalkyl group which may be substituted; X represents an ethylene group, a vinylene group or an ethylene group; n represents 0 or 1; the expression represents an ethylene group or a vinylene group, provided that when n is o and x is an ethylene group, R.sup.5 is not a linear or branched C.sub.3 -C.sub.8 alkyl group or a C.sub.3 -C.sub.10 cycloalkyl group which may be substituted.Such compounds are especially useful for the treatment and prevention of digestive organ diseases such as a duodenal ulcer or a gastric ulcer.
摘要:
Novel 5- or 7-monohalogenated or 5,7-dihalogenated .sup.6 -PGI.sub.1 and 5- or 7-monohalogenated or dihalogenated PGI.sub.2 (except 5-monofluorinated PGI.sub.2). The novel halogenated prostacyclins are useful for controlling vascular actions and also in organ transplantation, extra-corporeal circulation and the like. The present invention also provides processes for preparing the novel halogenated prostacyclins.
摘要:
Novel optically active compounds of 4-protected hydroxy-cyclopent-2-en-1-ones of the formula ##STR1## wherein R is a splittable protective group for an alcoholic hydroxyl group, and a process for preparing the 4-protected hydroxycyclopent-2-en-1-ones by oxidizing monohydroxy-protected derivatives of cyclopent-1-ene-3,5-diol expressed by the following formula ##STR2## wherein R is the same as defined above. Optically active 4-hydroxycyclopent-2-en-1-one which is an optically active isomer of the compound of formula (2); or optically active cyclopent-1-en-3,5-diol (R-isomer) and a novel diacyl derivative of the diol, a novel monoacylmonosilyl-derivative of the diol and a novel monoacylmonotetrahydropyranol-derivative of the diol, which are intermediates for the protective derivative of formula (1). Processes are also provided for preparing the protective derivatives of formula (1) by converting these intermediates by esterification, hydrolysis, enzymatic processes, etc. The optically active compounds of formula (2) are useful as precursors for the preparation of prostaglandin or its analogues.
摘要:
An isocarbacyclin derivative represented by the following formula [VII'] ##STR1## wherein A represents, a hydrocarbylcarboxylate group, a carboxymethoxycarbonyl group, an amide group, an acyloxymethyl group or a hydroxymethyl group; R.sup.4 represents H, a methyl group or a vinyl group; R.sup.5 represents a (substituted)alkyl group, a phenyl group, a phenoxy group or a cycloalkyl group; R.sup.e22 and R.sup.e32 represent H or a hydroxyprotecting group; n is 0 or 1;and a pharmaceutically acceptable salt thereof.