Polyhydroxy Amino Acid Derivatives via β-Lactams Using Enantiospecific Approaches and Microwave Techniques
摘要:
Enantiospecific synthesis has been developed for alpha-hydroxy beta-lactams of predictable absolute configuration starting with readily available carbohydrates, Stereospecific approaches and microwave assisted chemical reactions have been utilized for the preparation of these 3-hydroxy-2-azetidinones and their conversion to natural or non-natural enantiomeric forms of intermediates for gentosamine, 6-epilincosamine, gamma-hydroxythreonine, and polyoxamic acid. (C) 2000 Elsevier Science Ltd. All rights reserved.
Synthesis of Novel Enantiopure 4-Hydroxypipecolic Acid Derivatives with a Bicyclic β-Lactam Structure from a Common 3-Azido-4-oxoazetidine-2-carbaldehyde Precursor
作者:Benito Alcaide、Pedro Almendros、Amparo Luna、Teresa Martínez del Campo
DOI:10.1021/jo702405h
日期:2008.2.1
Two different stereocontrolled accesses to new 4-hydroxypipecolicacid analogues with a bicyclic β-lactam structure have been developed by using intramolecular reductive amination or allenic hydroamination reactions in 2-azetidinone-tethered azides. The access to the cyclization precursors was achieved from 3-azido-4-oxoazetidine-2-carbaldehyde via metal-mediated carbonyl−allenylation in aqueous environment
Studies on lactams. 81. Enantiospecific synthesis and absolute configuration of substituted .beta.-lactams from D-glyceraldehyde acetonide
作者:Dilip R. Wagle、Chandra Garai、Julian Chiang、Michael G. Monteleone、Barbara E. Kurys、Timothy W. Strohmeyer、Vinod R. Hegde、Maghar S. Manhas、Ajay K. Bose
DOI:10.1021/jo00253a013
日期:1988.9
BOSE, A. K.;HEGDE, V. R.;WAGLE, D. R.;BARI, SH. S.;MANHAS, MAGHAR, S., J. CHEM. SOC. CHEM. COMMUN., 1986, N 2, 161-163
作者:BOSE, A. K.、HEGDE, V. R.、WAGLE, D. R.、BARI, SH. S.、MANHAS, MAGHAR, S.