📜三苯基氯甲烷,对硝基苯-α-D-葡萄糖吡喃苷置于吡啶体系中,化学反应生成 对硝基苯基 6-O-三苯甲基-Alpha-D-吡喃葡萄糖苷
参考文献:Synthetic Studies On Oligosaccharides Composed Of 5-Thioglucopyranose Units
标题:Synthetic Studies On Oligosaccharides Composed Of 5-Thioglucopyranose Units
摘要:Glycosylation Reactions Of 5-Thioglucopyranosyl Trichloroacetimidates Bearing Ethereal Protective Groups At The 2-O-Position 14-15,And 37 Proceed Smoothly To Give Alpha-Glycosides Stereoselectively By Using A Catalytic Amount Of Silyl Triflate. This Methodology Allowed Us To Achieve Syntheses Of Sulfur-Substituted Isomaltotetraoside 2 And Maltotetraoside 3. These Studies Also Revealed That Benzoyl-Protected 5-Thioglucopyranosyl Trichloroacetimidate 12 Underwent P-Selective Glycosylation With C6-Oh Glucopyranosyl Acceptors Upon Activation By Bf3Oet2. This Was Applied For Preparation Of Sulfur-Substituted Gentiobiosides 1 And 46. (C) 2005 Elsevier Ltd. All Rights Reserved.
DOI:10.1016/j.Bmc.2005.05.028