A mild general method for the synthesis of ∝-linked disaccharides
作者:G.Venugopal Reddy、Vinayak R. Kulkarni、Hari Babu Mereyala
DOI:10.1016/s0040-4039(01)80711-5
日期:1989.1
Stereoselective ∝-glycosylations may be achieved using stable 2-pyridyl thioglycosides (anomeric mixture) having a non-participating 2-substituent as glycosyldonor and methyl iodide as an activator.
Synthesis of Double-Chain Bis-sulfone Neoglycolipids of the 2'-, 3'-, and 6'-Deoxyglobotrioses
作者:Zhiyuan Zhang、Goeran Magnusson
DOI:10.1021/jo00127a042
日期:1995.11
Partially protected 2-(trimethylsilyl)ethyl deoxylactosides (deoxygenated in the 2-, 3-, and 6-positions of the galactose unit) were synthesized via various routes and glycosylated with galactosyl donors to give the corresponding deoxytrisaccharides. Removal of the protecting groups gave the 2-(trimethylsilyl)ethyl 2'-, 3'-, and 6'-deoxyglobotriosides. Transformation of the protected trisaccharides into trichloroacetimidates, via the corresponding hemiacetals, proceeded in 86-96% overall yield. Glycosylation of 3-(hexadecylsulfonyl)-2-[(hexadecylsulfonyl)methyl]propanol with the trisaccharidic trichloroacetimidates, in 37-68% yield, followed by removal of protecting groups, gave the title neoglycolipids.
REDDY, G. VENUGOPAL;KULKARNI, VINAYAK R.;MEREYALA, HARI BABU, TETRAHEDRON LETT., 30,(1989) N2, C. 4283-4286
作者:REDDY, G. VENUGOPAL、KULKARNI, VINAYAK R.、MEREYALA, HARI BABU