Herstellung der optisch aktiven Methyl-benzyloxy-malonsäurehalbester und Bestimmung ihrer absoluten Konfiguration. 57. Mitteilung über Mutterkornalkaloide
作者:P. A. Stadler、A. J. Frey、A. Hofmann
DOI:10.1002/hlca.19630460649
日期:——
The synthesis is described of the monoethyl ester chlorides of (S)- and (R)-methyl benzyloxy malonic acid which are intermediates in the synthesis of ergotamine. Their absolute configuration was determined by linking the levorotatory antipode with S-(+)-citramalic acid.
描述了(S)-和(R)-甲基苄氧基丙二酸的单乙酯氯化物的合成,它们是麦角胺合成的中间体。它们的绝对构型是通过将左旋对映体与S -(+)-柠檬酸连接而确定的。