C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/111
C07D 499/00 (2006.01) C07F 7/10 (2006.01)
Patent
CA 1218985
ABSTRACT A penicillin derivative represented by the following formula Image wherein R1 is hydrogen or trialkylsilyl; R2 is hydrogen, trialkylsilyl or COOR2' wherein R2' is hydrogen, C1-18 alkyl, C2-7 alkoxymethyl, C3-8 alkylcarbonyloxymethyl, C4-9 alkylcarbonyloxyethyl, (C5-7 cycloalkyl)carbonyloxy- methyl, C9-14 benzylcarbonyloxyalkyl, C3-8 alkoxy- carbonylmethyl, C4-9 alkolxycarbonylethyl, phthalidyl, crotonolacton-4-yl, y-butyrolacton-4-yl, halogenated C1-6 alkyl substituted with 1 to 3 halogen atoms, C1-6 alkoxy- or nitro-substituted or unsubstituted benzyl, benzhydryl, tetrahydropyranyl, dimethylaminoethyl, dimethylchlorosilyl, trichlorosilyl, (5-substituted C1-6 alkyl or phenyl or unsubstituted-2-oxo-1,3-dioxoden- 4-yl)methyl, C8-13 benzoyloxyalkyl or group for forming a pharmaceutically acceptable salt; and R3 has the same meaning as above R2'.
434044
Ishida Naobumi
Kajitani Makoto
Micetich Ronald G.
Tanaka Motoaki
Yamabe Shigeru
Marks & Clerk
Taiho Pharmaceutical Co. Ltd.
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