C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 277/14 (2006.01) C07D 263/20 (2006.01) C07D 263/24 (2006.01) C07D 413/04 (2006.01) C07D 417/04 (2006.01)
Patent
CA 2064108
Compounds of formula (I): Image wherein: W represents a sulfur or oxygen atom and X represents a group of formula -N(R1)-, or W represents a group of formula -N(R1)- and X represents a sulfur or oxygen atom; R1 is hydrogen, alkyl or aralkyl; R2 and R3 are each hydrogen, alkyl, aralkyl, aryl or aromatic heterocyclic; R4 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.
Ishihara Sadao
Koike Hiroyuki
Miyake Sigeki
Mizuno Hiroshi
Saito Fujio
Marks & Clerk
Sankyo Company Limited
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