C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/102
C07D 501/57 (2006.01) A61K 31/545 (2006.01) C07D 501/00 (2006.01) C07D 501/04 (2006.01) C07D 501/36 (2006.01) C07D 501/40 (2006.01) C07D 501/60 (2006.01)
Patent
CA 1134816
M-6-22733C/79 ABSTRACT OF THE DISCLOSURE A 7a-methoxycephalosporin derivative represented by the formula (I): Image (I) wherein R1 represents a heterocyclic ring or an -S- hetero- cyclic ring; R2 represents a hydrogen atom, a carboxy group or a -COOR5 group wherein R5 represents a lowker alkly group, a dialkylamino-lower alkyl group or a Image group wherein R6 represents a lower alkyl group, a lower acyl group or a lower alkoxycarbonyl group and Y represents a hydrogen atom or a lower alkyl group; R3 represents a hydrogen atom, a carbamoyl group or a lower acyl group; R4 represents a hydrogen atom, a lower alkyl group, a dialkylamino-lower alkyl group or a Image group wherein R6 and Y are defined as above; A and B, which may be the same or different, each represents a straight chain or branched chain alkylene group having 1 to 5 carbon atoms; and x represents 0 or 1; or a pharmaceutically acceptable salt thereof and a process for producing the same.
342335
Inoue Shigeharu
Iwamatsu Katsuyoshi
Kondo Shinichi
Miyauchi Keinosuke
Seki Shigeo
George H. Riches And Associates
Meiji Seika Kaisha Ltd.
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