Frishauf, Holtz, Goodman & Woodward
Thiazolidone compounds and method of using the same as a vasodilator
 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. 
Sankyo Company, Limited
A A C C C A
A61P A61P C07D C07D C07D A61P
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Shigeki Fujio Hiroyuki Takao Sadao Hiroshi
Miyake Saito Koike Yoshioka Ishihara Mizuno