Die Konstitution des Loroglossins. 163. Mitt. über organische Naturstoffe
作者:Robert W. Gray、Armin Guggisberg、Klaus Peter Segebarth、Manfred Hesse、Hans Schmid
DOI:10.1002/hlca.19770600419
日期:1977.6.1
The Constitution of Loroglossine
洛格罗辛的组成
Asymmetric synthesis of 2-substituted butane-1,4-diols by hydrogenation of homochiral fumaramide derivatives
作者:Samaila Jawaid、Louis J. Farrugia、David J. Robins
DOI:10.1016/j.tetasy.2004.11.023
日期:2004.12
Diastereoselective hydrogenation of homochiral fumaramides 1 derived from (2R)-Oppolzer's sultam was observed by analysis of the H-1 NMR spectra of the succinamide mixtures with de's of 77-88%. Reduction of these succinamides using LiAlH4 gave the corresponding (2S)-butane-1,4-diols and established that addition of hydrogen takes place selectively on the re-face of 14 fumaramides 1. The stereoselectivity was confirmed by estimating the ee's from the F-19 NMR spectra of the Mosher's diesters of the diols. This methodology was applied to the synthesis of selected pyrrolidine natural products in homochiral form. (C) 2004 Elsevier Ltd. All rights reserved.
Walden, Chemische Berichte, 1891, vol. 24, p. 2028
作者:Walden
DOI:——
日期:——
Demarcay, Annales de Chimie (Cachan, France), 1880, vol. <5> 20, p. 462
作者:Demarcay
DOI:——
日期:——
The Preparation of Some Alkyl Fumaric Acids and Maleic Anhydrides