SYNTHESIS OF A 4-BETA-CARBOXYETHYL DERIVATIVE OF THIENAMYCIN

被引:8
作者
BOUTHILLIER, G [1 ]
MASTALERZ, H [1 ]
MENARD, M [1 ]
机构
[1] BRISTOL MYERS SQUIBB CO,PHARMACEUT RES INST,WALLINGFORD,CT 06492
关键词
D O I
10.1016/S0040-4039(00)76942-5
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
A stereoselective synthesis of the 4 beta-carboxyethyl derivative of thienamycin (1) is described. The stereochemistry of the substituent at C-4 of the carbapenem was obtained by equilibration of the ester group in the 1-azabicyclo[4.2.0]octane intermediates, 8 and 9, with base. This favored the 5 alpha-ester (8) which was then transformed into the imide (14). Regioselective opening of the imide with lithium allyloxide gave the azetidinone (15) which was converted into the title compound.
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页码:4689 / 4692
页数:4
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