申请人:Sankyo Company, Ltd.
公开号:US05356918A1
公开(公告)日:1994-10-18
Compounds of formula (I): ##STR1## wherein W represents an oxygen atom and X represents a group of formula --N(R.sup.1)--; R.sup.1 is hydrogen, alkyl or aralkyl; R.sub.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.
公式(I)的化合物:##STR1## 其中W代表氧原子,X代表公式--N(R.sup.1)-的基团; R.sup.1是氢,烷基或芳基烷基; R.sub.2和R.sup.3分别是氢,烷基,芳基烷基,芳基或芳香族杂环; R.sup.4是氢,烷基或芳基烷基; A是可选地取代羧基的烷基;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。