作者:Heiko Bernsmann、Margit Gruner、Roland Fröhlich、Peter Metz
DOI:10.1016/s0040-4039(01)01044-9
日期:2001.8
Starting from a key intermediate for the synthesis of the larger hydroxy acid constituent of pamamycin-607 (1), an efficient three-step route to the methyl ester of the smaller fragment of 1 involving a Yamaguchi lactonization with concomitant C(2) epimerization was developed. Alternatively, the methyl ester of the smaller hydroxy acid portion of 1 was prepared by direct C(2) epimerization.
从合成pamamycin-607(1)的较大羟基酸成分的关键中间体开始,到山梨内酯化并伴随C(2)差向异构化的1较小片段的甲酯的有效三步路线为发达。或者,通过直接C(2)差向异构化制备1的较小羟基酸部分的甲酯。