摘要:
The reaction of 1-0-hexadecyl-2-O-methyl-sn-glycerol with 2,3,6,2',3',4',6'-hepta-O-acetyl-alpha-lactosylphosphoramidate or alpha-maltosylphosphoramidate in the presence of trimethylsilyl triflate and molecular sieves afforded 1-0-hexadecyl-2-0-methyl-3-0-(2,3,6,2',3',4',6'-hepta-0-acetyl-beta-lactosyl)-sn-glycerolipid or beta-maltosyl-sn-glycerolipid stereoselectively in moderate yields after column chromatography. Alkaline hydrolysis of the O-peracetyl glycerolipids gave the desired beta-glycolipids 1 and 2.