6-alkoxy-6-acylamidopenicillins 7-alkoxy-7-acylamido...

Details 6-alkoxy-6-acylamidopenicillins 7-alkoxy-7-acylamido... 6-alkoxy-6-acylamidopenicillins 7-alkoxy-7-acylamido...

C - Chemistry, Metallurgy

07

D

260/102, 260/111

C07D 499/44 (2006.01) C07D 499/00 (2006.01) C07D 501/04 (2006.01) C07D 501/22 (2006.01)

Patent

CA 1040620

ABSTRACT OF THE DISCLOSURE This invention provides 6-acylamino penicillins having a 6-C1 to C4 alkoxy group and 7-acylamino cephalosporins having a 7-C1 to C4 alkoxy group. They are prepared by reacting a 6- acylamino penicillin sulfoxide or 6-acylamino anhydropenicillin with a halogenating agent in the presence of weak base and reacting the halogenated penicillin with a C1 to C4 alkanol. The alkoxylated penicillin sulfoxide or anhydropenicillin then is reduced or re- arranged to the corresponding penicillin or alkoxylated anhydro- penicillin. The cephalosporins are formed from the alkoxylated penicillin sulfoxide by ring expansion.

183763

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