Asymmetric Hetero Diels−Alder as an Access to Carbacephams
作者:Alberto Avenoza、Jesús H. Busto、Carlos Cativiela、Francisco Corzana、Jesús M. Peregrina、María M. Zurbano
DOI:10.1021/jo016186h
日期:2002.1.1
A short and efficient asymmetric synthesis of the (6R,7S)-7-tert-butoxycarbonylamino-2-ketocarbacepham is described. The key step involves the heteroDiels-Alderreaction of the benzylimine derived from the enantiomer of Garner's aldehyde with Danishefsky'sdiene.