Iodine-catalyzed one-pot acetalation–esterification reaction for the preparation of orthogonally protected glycosides
作者:Rachel A. Jones、Robert Davidson、Anh Tuan Tran、Nichola Smith、M. Carmen Galan
DOI:10.1016/j.carres.2010.07.010
日期:2010.9
An iodine-catalyzed one-pot tandem acetalation-esterification reaction of thio- and O-glycosides has been developed providing a fast and mild route to orthogonally protected glycosides ready to be used as building blocks in glycosylation reactions.
[bmim][OTf]: a versatile room temperature glycosylation promoter
作者:M. Carmen Galan、Claire Brunet、Monica Fuensanta
DOI:10.1016/j.tetlet.2008.11.042
日期:2009.1
[bmim][OTf] is a versatile, ionic liquid promoter for the room temperature glycosylation of both thiophenyl and trichloroacetimidate glycoside donors; the conditions are mild, with no requirement for molecular sieves, and are compatible with a wide range of donors and protecting groups. (c) 2008 Elsevier Ltd. All rights reserved.
Copper(II) Triflate: A Versatile Catalyst for the One-Pot Preparation of Orthogonally Protected Glycosides
作者:Anh-Tuan Tran、Rachel A. Jones、Julien Pastor、Julien Boisson、Nichola Smith、M. Carmen Galan
DOI:10.1002/adsc.201100228
日期:2011.10
development of general and expedient methodologies for the preparation of orthogonally protected glycoside buildingblocks is essential for the efficientsynthesis of complex oligosaccharides. Herein, we describe a new approach that uses copper(II) triflate as a versatile catalyst for the one-pot preparation of orthogonal protected thio- and O-glycosides from the corresponding unprotected counterparts. The conditions