Process for the manufacture of .beta.-lactames

Details Process for the manufacture of .beta.-lactames Process for the manufacture of .beta.-lactames

C - Chemistry, Metallurgy

07

D

260/335.3

C07D 405/04 (2006.01) C07D 417/12 (2006.01)

Patent

CA 1251454

Abstract Optically uniform .beta.-lactams of the formula Image I wherein R1 signifies lower alkanoyl, lower alkoxycarbonyl or benzoyl, R2 signifies hydrogen, lower alkyl, lower alkanoyl, lower alkoxycarbonyl or cyano, R3 signi- fies hydrogen or lower alkyl, B signifies lower alkylidene, lower cycloalkylidene or carbonyl and Z signifies lower 2-alkenyl or 2,4-di(lower alkoxy)benzyl, and their optical antipodes can be manufactured by reacting a salt of a carboxylic acid of the formula Image II wherein R1, R2 and R3 have the above significance, in the presence of a reactive derivative of an organic sulphonic acid and a base with an optically uniform compound of the formula Image III wherein B and Z have the above signifi- cance, or the optical antipode thereof and can be converted into antimicrobially active, optically uniform substances which contain a .beta.-lactam ring.

444812

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