| Literature DB >> 19320459 |
Yu-Ming Zhao1, Peiming Gu, Hai-Jun Zhang, Qing-Wei Zhang, Chun-An Fan, Yong-Qiang Tu, Fu-Min Zhang.
Abstract
A short and efficient approach to aza-quaternary pyrrolo[1,2-a]azepine 8 and aza-quaternary indolizine 23, as the crucial intermediates for syntheses of stemonamine (1a) and cephalotaxine (1b), has been developed on the basis of the key intramolecular Schmidt reaction of symmetric azido-diones 5 and 18, respectively.Entities:
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Year: 2009 PMID： 19320459 DOI： 10.1021/jo900113s
Source DB: PubMed Journal: J Org Chem ISSN： 0022-3263 Impact factor: 4.354