C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/302.7, 260/2
C07D 417/12 (2006.01) C07D 311/58 (2006.01) C07D 417/14 (2006.01) C07D 493/04 (2006.01)
Patent
CA 1263395
ABSTRACT The compounds of formula (I): Image (I) [in which: R1 and R2 are the same or different and each represents hydrogen or C1-C5 alkyl: R3 represents hydrogen, an acyl group, a (C1-C6 alkoxy)carbonyl group or an aralkyloxycarbonyl group; R4 and R5 are the same or different and each represents hydrogen, C1-C5 alkyl or C1-C5 alkoxy, or R4 and R5 together represent a C1-C4 alkylenedioxy group; n is 1, 2 or 3; W represents the -CH2-, >CO or >CH-OR6 group (in which R6 represents any one of the atoms or groups defined for R3 and may be the same as or different from R3); and Y and Z are the same or different and each represents oxygen or imino] and pharmaceutically acceptable salts thereof have various valuable therapeutic effects on the blood system and may be prepared by a process which includes reacting a corresponding halopropionic acid derivative with thiourea.
462173
Hasegawa Kazuo
Kitazawa Eiichi
Kurumada Tomoyuki
Yamazaki Mitsuo
Yoshioka Takao
Marks & Clerk
Sankyo Company Limited
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