申请人:Sankyo Company, Limited
公开号:US05298516A1
公开(公告)日:1994-03-29
Compounds of formula (I): ##STR1## wherein W represents a sulfur atom and X represents a group of formula --N(R.sup.1)--, or W represents a group of formula --N(R.sup.1)-- and X represents a sulfur atom; R.sup.1 is hydrogen, alkyl or aralkyl; R.sup.2 and R.sup.3 are each hydrogen, alkyl, aralkyl, aryl or aromatic heterocyclic; R.sup.4 is hydrogen, alkyl or aralkyl; and A is alkylene which is optionally substituted by carboxy; and pharmaceutically acceptable salts and esters thereof, have a valuable vasodilatory activity.
式(I)的化合物:##STR1##其中W代表硫原子,X代表式--N(R.sup.1)--的基团,或者W代表式--N(R.sup.1)--的基团,X代表硫原子;R.sup.1是氢、烷基或芳基烷基;R.sup.2和R.sup.3分别是氢、烷基、芳基烷基、芳基或芳香杂环;R.sup.4是氢、烷基或芳基烷基;A是烷基,可以选择性地被羧基取代;以及其药学上可接受的盐和酯,具有有价值的血管扩张活性。