Synthesis of naphthyl C-glycosides of rearranged tri-O-benzyl-2-deoxy-d-glucose
作者:Margaret A Brimble、Timothy J Brenstrum
DOI:10.1016/s0040-4039(99)02241-8
日期:2000.2
C-Glycosylation of 3-bromonaphthol 4 with benzyl-protected glycosyl donor 19 afforded rearranged bicyclic acetal 24 in which the glycosyl donor had undergone an unusual 1,6-hydride shift. Use of the regioisomeric 2-bromonaphthol 6 with the same glycosyl donor 19 afforded the expected beta-C-glycoside 22. (C) 2000 Elsevier Science Ltd. All rights reserved.
C-Glycosylation of tri-O-benzyl-2-deoxy-D-glucose: synthesis of naphthyl-substituted 3,6-dioxabicyclo[3.2.2]nonanes
作者:Margaret A. Brimble、Timothy J. Brenstrum
DOI:10.1039/b102807n
日期:——
trifluoromethanesulfonate and silver perchlorate or boron trifluoride–diethyl ether affords rearranged product 36 in which the glycosyl donor has undergone an unusual 1,6-hydrideshift. Use of the corresponding naphthol 12 as the glycosyl acceptor under the same conditions affords the expected C-glycoside 34. Use of the naphthol 7 and naphthol 11 affords predominantly rearranged products 35 and 37 respectively