A prostacyclin analogue having the formula: ##STR1## wherein R.sup.1 is --CO.sub.2 R.sup.5 (wherein R.sup.5 is a hydrogen atom, a straight chain or branched alkyl group having from 1 to 12 carbon atoms, an aralkyl group having from 7 to 12 carbon atoms, a cycloalkyl group having from 4 to 7 carbon atoms and unsubstituted or substituted by at least one alkyl group having from 1 to 4 carbon atoms, a substituted or unsubstituted phenyl group, or one equivalent of a cation), or --CONR.sup.6 R.sup.7 (wherein each of R.sup.6 and R.sup.7 is a hydrogen atom or an alkyl group having from 1 to 10 carbon atoms, or R.sup.6 and R.sup.7 together with the adjacent nitrogen atom, form a 5- or 6-membered substituted or unsubstituted hetero ring which may contain a hetero atom other than said nitrogen atom); A is --CH.sub.2 CH.sub.2 CH.sub.2 --, CH.sub.2 --O--CH.sub.2 CH.sub.2 --, --CH.sub.2 CH.sub.2 CH.sub.2 CH.sub.2 --, --CH.sub.2 CH.sub.2 --O--CH.sub.2 -- or --CH.dbd.CHCH.sub.2 CH.sub. 2 --; B is trans --CH.dbd.CH-- or --C.tbd.C--; R.sup.2 is a straight chain or branched alkyl group having from 3 to 10 carbon atoms, a cycloalkyl group having from 4 to 7 carbon atoms and unsubstituted or substituted by at least one alkyl group having from 1 to 4 carbon atoms, a straight chain or branched alkenyl group having from 3 to 12 carbon atoms, a straight chain or branched alkynyl group having from 3 to 8 carbon atoms, or an alkyl group having from 1 to 3 carbon atoms substituted by a substituted or unsubstituted phenyl or phenoxy group, by an alkoxy group having from 1 to 6 carbon atoms or by a cycloalkyl group having from 5 to 8 carbon atoms; R.sup.3 is a hydrogen atom, a methyl group or a vinyl group; and R.sup.4 is a hydrogen atom, an acyl group having from 1 to 7 carbon atoms, a tri-C.sub.1 -C.sub.7 hydrocarbon-silyl group or a group capable of forming an acetal bond together with the oxygen atom of a hydroxyl group; provided that the double bond in a substituent for A is E or Z, or a mixture thereof; the asymmetric center in a substituent for R.sup.2 assumes a R-conformation or a S-conformation, or a mixture thereof; and the bonds shown by dotted lines at the 2-3 and 3-4 positions mean that either one of them is a double bond.
一种具有以下结构的
前列环素类似物:其中R.sup.1为--CO.sub.2 R.sup.5(其中R.sup.5为
氢原子、具有1至12个
碳原子的直链或支链烷基、具有7至12个
碳原子的芳基烷基、具有4至7个
碳原子的
环烷基,未取代或取代至少一个具有1至4个
碳原子的烷基、取代或未取代的
苯基,或者一个阳离子的等当量),或--CONR.sup.6 R.sup.7(其中R.sup.6和R.sup.7各自为
氢原子或具有1至10个
碳原子的烷基,或R.sup.6和R.sup.7与相邻的
氮原子一起形成一个含有异原子(除
氮原子外)的5-或6-成员取代或未取代杂环,A为--CH.sub.2 CH.sub.2 CH.sub.2 --、CH.sub.2 --O--CH.sub.2 CH.sub.2 --、--CH.sub.2 CH.sub.2 CH.sub.2 CH.sub.2 --、--CH.sub.2 CH.sub.2 --O--CH.sub.2 --或--CH.dbd.CHCH.sub.2 CH.sub.2 --;B为反式--CH.dbd.CH--或--C.tbd.C--;R.sup.2为具有3至10个
碳原子的直链或支链烷基、具有4至7个
碳原子的
环烷基,未取代或取代至少一个具有1至4个
碳原子的烷基、具有3至12个
碳原子的直链或支链
烯基、具有3至8个
碳原子的直链或支链炔基,或者由取代或未取代的
苯基或
苯氧基、具有1至6个
碳原子的烷
氧基或具有5至8个
碳原子的
环烷基取代的具有1至3个
碳原子的烷基取代的烷基;R.sup.3为
氢原子、
甲基或
乙烯基;R.sup.4为
氢原子、具有1至7个
碳原子的酰基、三个C.sub.1-C.sub.7
碳氢化合物硅基团或者与羟基的
氧原子一起形成
缩醛键的基团;前提是A的取代物中的双键为E或Z,或其混合物;R.sup.2的取代物中的不对称中心呈R构象或S构象,或其混合物;以及在2-3和3-4位置用虚线表示的键意味着它们中的任何一个是双键。