A new approach to the synthesis of chiral molecules from nonchiral reactants. Asymmetric induction by reaction at one surface of a single (nonchiral) crystal
作者:P. Chinna Chenchaiah、Herbert L. Holland、Mary Frances Richardson
DOI:10.1039/c39820000436
日期:——
Reaction at one surface of a single achiral crystal can produce chiral products having optical purities approaching 100%.
在单个非手性晶体的一个表面上的反应可以产生具有接近100%的光学纯度的手性产物。
Pyrrolizidine alkaloids. The absolute configuration at C-2 in monocrotalic acid
作者:D. J. Robins、D. H. G. Crout
DOI:10.1039/j39700001334
日期:——
Evidence is presented which firmly establishes the R-configuration at C-2 in monocrotalic acid. In addition, (–)-methyl 2-hydroxy-2-methyl-3-oxobutanoate (methyl acetolactate) is shown to have the R-configuration.
作者:Gordon S. Myers、William L. Glen、Paul Morozovitch、Richard Barber、Gilles Papineau Couture、Gordon A. Grant
DOI:10.1021/ja01589a033
日期:1956.4
Hypotensive Alkaloids from Veratrum album Protoveratrine A, Protoveratrine B and Germitetrine B<sup>1a</sup>
作者:Harold A. Nash、Robert M. Brooker
DOI:10.1021/ja01104a047
日期:1953.4
A secoiridoid and other constituents of Gonocaryum calleryanum
作者:Yu Yi Chan、Yann Lii Leu、Ful Wen Lin、Chia Ying Li、You Cheng Wu、Li Shian Shi、Meei Jen Liou、Tian Shung Wu
DOI:10.1016/s0031-9422(98)80075-7
日期:1998.3
Investigation of the leaves, branch, stem and root bark of Gonocaryum calleryanum resulted in the isolation of a new secoiridoid glycoside, gonocaryoside E, together with 14 known compounds. Their structures were elucidated by spectral analysis and chemical transformation. Gonocaryoside E was shown to be a derivative of kingiside in which the lactone ring was open, and with the 8-hydroxy group esterified with tiglic acid. Alkaline hydrolysis of these secoiridoids is discussed. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.