Synthesis of orthogonally protected 2-deoxystreptamine stereoisomers
摘要:
Enantiomerically pure 4,6-diaminocyclohexenols are obtained from carbohydrate derived 1,7-dienes by ring-closing metathesis and palladium catalyzed allylic amination using o-nitrobenzenesulfonylamides as nucleophiles. In the latter reaction the use of a cyclic carbonate as a leaving group proved to be essential to facilitate a smooth substitution. The obtained compounds were converted into orthogonally protected diaminocyclitols, which are stereoisomers of the naturally occurring 2-deoxystreptamine, a constituent of aminoglycoside antibiotics. (C) 2004 Elsevier Ltd. All rights reserved.
Glycosylation of Cyclitols: Synthesis of Neamine-Type Aminoglycosides
作者:Steven H. L. Verhelst、Lisette Magnée、Tom Wennekes、Wouter Wiedenhof、Gijsbert A. van der Marel、Herman S. Overkleeft、Constant A. A. van Boeckel、Jacques H. van Boom