期刊
TETRAHEDRON
卷 66, 期 32, 页码 6167-6173出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2010.05.102
关键词
Penmacric acid; Epimers; Pyroglutamate; Lithium enolate; Titanium enolate
资金
- CSIR-UGC, New Delhi, India
An extremely short formal synthesis of three epimers of penmacric acid is accomplished starting from pyroglutamate in one or two steps. Stereochemical outcome in the reaction of Li and Ti enolates of pyroglutamate with imines is found to be dependent on both chelation and steric factors. (C) 2010 Elsevier Ltd. All rights reserved.
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