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