Facile α-deprotonation–electrophilic substitution of quinuclidine and DABCO
作者:Satinder V. Kessar、Paramjit Singh、Kamal N. Singh、Sandeep K. Singh
DOI:10.1039/a905359j
日期:——
Deprotonation of BF3 complexes of quinuclidine or DABCO by Schlosser base and subsequent reaction with electrophiles affords α-substituted products in moderate to good yields.
Mono- and diaryl-2-quinuclidinylcarbinols with local anesthetic and antiarrhythmic activity
作者:P. H. Nelson、A. M. Strosberg、K. G. Untch
DOI:10.1021/jm00176a014
日期:1980.2
The reaction between 2-carboethoxyquinuclidine and various aryl- and heteroarylithium reagents gave mixtures of aryl 2-quinuclidinyl ketones and diaryl-2-quinuclidinylcarbinols. Diboranereduction of the ketones gave the erythro-carbinols, stereochemically analogous to quinidine. Several of the mono- and diarylcarbinols exhibited potent local anesthetic and antiarrhythmic activity, in some cases greater
Enantio- and diastereoselective synthesis of all four possible stereoisomers of 2-(phenylhydroxymethyl)quinuclidine
作者:Barry Lygo、John Crosby、Terence R. Lowdon、Philip G. Wainwright
DOI:10.1016/s0040-4039(97)00310-9
日期:1997.3
An enantio- and diastereoselective synthesis of all four possible stereoisomers of 2-(phenylhydroxymethyl)quinuclidine is reported. Key steps involve the use of the Sharpless dihydroxylation protocol to induce asymmetry, and stereodivergent cyclisations of the resulting diol to form the quinuclidine ring. (C) 1997 Elsevier Science Ltd.
Asymmetric approaches to 2-hydroxymethylquinuclidine derivatives
作者:B. Lygo、J. Crosby、T. Lowdon、P.G. Wainwright
DOI:10.1016/s0040-4020(99)00050-2
日期:1999.2
Highly enantio- and diastereoselective routes to 2-hydroxymethylquinuclidines have been developed. Key steps involve the use of Sharpless dihydroxylation or Sharpless epoxidation to introduce the asymmetry with high stereocontrol, and formation of the quinuclidine ring systems via cyclisation of epoxy amines. (C) 1999 Elsevier Science Ltd. All rights reserved.