Preparation of 1'-ethoxycarbonyloxyethyl esters of...

Details Preparation of 1'-ethoxycarbonyloxyethyl esters of... Preparation of 1'-ethoxycarbonyloxyethyl esters of...

C - Chemistry, Metallurgy

07

D

260/116.5

C07D 499/46 (2006.01) C07D 499/00 (2006.01)

Patent

CA 1238632

23940-533 ABSTRACT OF THE DISCLOSURE A process for the preparation of a 1'-ethoxycarbonyl- oxyethyl ester of penicillin -G having the formula: (X) Image which comprises reacting a compound of the formula (XI): Image (XI) wherein Z is hydrogen or a cation selected from the group consisting of alkali metal, tri (lower alkyl) ammonium and tetra (lower alkyl) ammonium, with 1-bromoethyl ethyl carbonate in an organic solvent. The 1'-ethoxycarbonyloxy ethyl esters are useful as antibiotic pro-drugs and are produced in accordance with the invention in better yields and higher purity than heretobefore.

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