Synthesis of γ-aminobutyric acid analogues of restricted conformation. Part 1. The 2-aminocycloalkylacetic acids
作者:Peter D. Kennewell、Saroop S. Matharu、John B. Taylor、Robert Westwood、Peter G. Sammes
DOI:10.1039/p19820002553
日期:——
The syntheses of cis- and trans-2-aminocyclopropyl, -cyclobutyl, -cyclopentyl, and -cyclohexylacetic acids as γ-aminobutyricacidanalogues of restrictedconformation are described. Mass spectral evidence fully supports the stereochemical assignments of the configurational isomers.
Stereoselective preparation of bicyclic lactams by copper- or ruthenium-catalysed cyclization of N-allyltrichloroacetamides: a novel entry to pyrrolidine alkaloid skeletons
Cyclization of certain N-allyltrichloroacetamides provides a stereoselective method for several bicycliclactams.
某些N-烯丙基三氯乙酰胺的环化为几种双环内酰胺提供了立体选择方法。
Practical Syntheses of Both Enantiomers of the Conformationally Restricted GABA Analogue<i>cis</i>-(2-Aminocyclobutyl)acetic Acid
作者:Hawraà Awada、Sylvie Robin、Régis Guillot、Ogaritte Yazbeck、Daoud Naoufal、Nada Jaber、Ali Hachem、David J. Aitken
DOI:10.1002/ejoc.201402676
日期:2014.11
Two efficient routes have been established for the preparation of both enantiomers of cis-(2-aminocyclobutyl)acetic acid, a conformationally restricted analogue of GABA. Both procedures converged on the racemic N-tert-butoxycarbonyl derivative of the target compound, which was resolved through chiral derivatization with an oxazolidinone auxiliary, which also allowed determination of the absolute configuration