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.
摘要:
A novel compound selected from the group consisting of 7-(or 6- or 4-)thiaprostaglandin E.sub.1 derivatives of the formula (I). ##STR1## wherein A represents --CH.sub.2 -- or ##STR2## in which n is 0, 1 or 2, provided that only one A cut of three is ##STR3## R.sup.1 -R.sup.7 and G are as defined in the specification, the 15-epimers of said thiaprostaglandin E.sub.1 derivatives, the enatiomers of said thiaprostaglandin E.sub.1 derivatives or their 15-epimers, and mixtures of these compounds.A 7-thiaprostaglandin E.sub.1 derivative and/or its optical isomer may be prepared by reacting a 2-organo-2-cyclopentenone (II) with an organic copper-lithium compound (III) to effect conjugation reaction. A 6-thiaprostaglandin E.sub.1 derivative and/or its optical isomer may be prepared by subjecting an .alpha.,.beta.-unsaturated ketone (IV) and a thiol (V) to the Michael addition reaction. And, 4-thiaprostaglandin derivative and/or its optical isomer may also be prepared by the Michael addition reaction from a 2-allyl substituted cyclopentanone (VI) and a thiol (VIII).Some compounds ((I)-1) amongst the compounds of the formula (I) and/or their optical isomer are useful for controlling vascular actions such as angina pectoris, vasodilation etc.
摘要:
A derivative of thiazolo [3,2-a] pyrimidine expressed by formula (I) ##STR1## (where R indicates a phenyl group or a benzyl group which has a halogen atom, a lower alkyl or lower alkyloxy group as a substituent group, an alicyclic group or an arylethyl group), and a process for the preparation of a compound of formula (I) comprising cyclizing a compound expressed by formula (II) by application of heat ##STR2## (where a definition of R is as same as that given in case of formula (I) and R' indicates a halogen atom or lower alkyloxy group). A drug which contains this compound as active ingredient is useful for curing autoimmune diseases such as rheumatoid arthritis, nephritis, etc.
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 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:
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:
A novel isocarbacyclin which is a compound represented by the following formula ##STR1## wherein R.sup.1 represents a hydrogen atom, or a C.sub.1 -C.sub.4 alkyl or alkenyl group; R.sup.2 and R.sup.3 are identical or different and each represents a hydrogen atom, a tri(C.sub.1 -C.sub.7)hydrocarbon-silyl group or a group forming an acetal linkage together with the oxygen atom of the hydroxyl group; R.sup.4 represents a hydrogen atom, a methyl group or a vinyl group; R.sup.5 represents an unsubstituted linear or branched C.sub.3 -C.sub.8 alkyl group which may be interrupted by an oxygen atom, a substituted linear or branched C.sub.1 -C.sub.5 group in which the substituent is a C.sub.1 -C.sub.6 alkoxy group or a phenyl, phenoxy or C.sub.3 -C.sub.10 cycloalkyl group which may be substituted further, 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; n is 0 or 1; and Ar represents a substituted or unsubstituted phenyl group, its enantiomorph, or a mixture both in an arbitrary ratio.
摘要:
Novel 1.alpha.,3.beta.-dihydroxy-24-oxocholesta-5,7-diene and the hydroxyl group-protected derivatives thereof.Said novel 1.alpha.-hydroxy-24-oxovitamin D.sub.3 and said novel intermediates are also useful as the intermediates of 1.alpha.,24-dihydroxyvitamin D.sub.3.1.alpha.,3.beta.-Dihydroxy-24-oxocholesta-5,7-diene and the hydroxyl group-protected derivatives thereof are prepared from fucosterol via 1.alpha.,3.beta.-diprotected hydroxy-24(24)-ethylenedioxycholest-5-ene. 1.alpha.-hydroxy-24-oxovitamin D.sub.3 is prepared by irradiation with ultraviolet rays to 1.alpha.,3.beta.-dihydroxy-24-oxocholesta-5,7-diene or a hydroxyl group-protected derivatives thereof, isomerization using heat energy, and, when necessary, elimination of the protecting groups.