A - Human Necessities – 61 – K
Patent
A - Human Necessities
61
K
167/188
A61K 31/43 (2006.01)
Patent
CA 1222951
ABSTRACT OF THE DISCLOSURE A pharmaceutical composition useful for treating bacterial infections in mammals which comprises (A) a B-lactam antibiotic and (B) a penicillin derivative represented by the following formula Image wherein R1 and R2 are each the same or different and represent hydrogen, Cl-18 alkyl, mononitro-substituted benzyl or group for forming a pharmaceutically acceptable salt and R3 is selected from the group consisting of hydrogen, Cl-6 alkyl, C2-7 alkoxymethyl, C3-8 alkyl- carbonyloxymethyl, C4-9 alkylcarbonyloxyethyl, (C5-7 cycloalkyl)carbonyloxymethyl, C9-14 benzylcarbonyloxy- alkyl, C3-8 alkoxycarbonylmethyl, C4-9 alkoxycarbonyl- ethyl, phthalidyl, crotonolacton-4-yl, Y-butyrolacton 4-yl, halogenated Cl-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 and group for forming a pharmaceutically acceptable salt.
507098
Ishida Naobumi
Ishizawa Takeshi
Micetich Ronald G.
Yamabe Shigeru
Yamazaki Tomio
Marks & Clerk
Taiho Pharmaceutical Co. Ltd.
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