2,4-Diamino-3-methylbutanoic acid, a novel amino acid in root nodule hydrolysates from Lotus tenuis
作者:G.John Shaw、P.J. Ellingham、L.N. Nixon
DOI:10.1016/0031-9422(81)84020-4
日期:1981.1
Abstract The novel amino acid 2,4-diamino-3-methylbutanoic acid has been identified in nodules formed by two strains of Rhizobium bacteria on Lotustenuis roots. Retention time measurements on a Chirasil-Val capillary column suggest it is present as the (2 R ,3 S )-enantiomer. Several isomeric diamino acids were synthesized for comparative studies.
摘要 2,4-diamino-3-methylbutanoic acid 是一种新型氨基酸 2,4-diamino-3-methylbutanoic acid,在细莲根上由两株根瘤菌形成的根瘤中被鉴定出来。Chirasil-Val 毛细管柱上的保留时间测量表明它以 (2 R ,3 S )-对映异构体形式存在。合成了几种异构二氨基酸用于比较研究。
A Total Synthesis of (±)-Zoapatanol and Demethyl-ORF13811
作者:Philip J. Kocieński、Christopher J. Love、Whitby Richard J、Gerard Costello、David A. Roberts
DOI:10.1016/s0040-4020(01)89243-7
日期:1989.1
Abderhalden; Heyns, Chemische Berichte, 1934, vol. 67, p. 530,545
作者:Abderhalden、Heyns
DOI:——
日期:——
Staudinger; Ott, Chemische Berichte, 1911, vol. 44, p. 1636
作者:Staudinger、Ott
DOI:——
日期:——
Practical synthesis of 3-bromo-5,6-dihydropyridin-2-ones via β,γ-unsaturated α-bromo-ketene/imine cycloaddition
An approach to 3-bromo-4-alkyl-6-aryl-5,6-dihydropyridin-2-ones and 3 -bromo-5-ethyl-6-aryl-5,6-dihydropyridin-2-ones starting from beta,gamma-unsaturated alpha-bromoketenes and imines is reported. The presence of a bromine atom on the double bond allows performing aziridination or bromine displacement with an amine. The reaction gave fused bicyclic N-allyl-aziridines or 3-amino-substituted 5,6-dihydropyridin-2-ones, depending on the substituents on the six-membered ring. (C) 2004 Published by Elsevier Ltd.