On the synthesis of the 2,6-dideoxysugar l-digitoxose
作者:Shannon C. Timmons、David L. Jakeman
DOI:10.1016/j.carres.2007.09.012
日期:2007.12
As deoxysugars are integral components of many natural products, the development of efficient chemical and enzymatic routes to prepare these compounds is of particular interest. Herein, we report a comparison of several synthetic methodologies used to prepare protected derivatives of the 2,6-dideoxysugar L-digitoxose. A novel, stereoselective synthetic route to efficiently access methyl 4-O-tert-butyldimethylsilyl-2,6-dideoxy-3-O-trimethylsilyl-alpha-L-ribo-hexopyranoside in 35% yield over nine facile steps is described. (C) 2007 Elsevier Ltd. All rights reserved.
The reaction of derivatives of methyl 2,3-O-benzylidene-α-l-rhamnopyranoside with butyl-lithium
作者:John S. Brimacombe、Roderick Hanna、May S. Saeed、Leslie C.N. Tucker