Synthesis of methyl 4-thio-β-cellobioside. A reinvestigation
作者:Vincent Moreau、Jens Chr. Norrild、Hugues Driguez
DOI:10.1016/s0008-6215(97)00046-3
日期:1997.5
Abstract The best yield for the synthesis of the title compound was obtained by nucleophilic displacement of the 4- O -triflyl group in methyl tri -O- benzyl -4-O- triflyl -β- d - galactopyranoside by 2,3,4,6- tetra -O- acetyl -1-S- acetyl-1-thio -β- d - glucopyranose in HMPA in the presence of diethylamine. Under these conditions, the formation of unsaturated side products was decreased.
摘要通过亲核置换甲基三-O-苄基-4-O-三flyl-β-d-半乳糖吡喃糖苷中的4-O-三氟甲苯基,可得到2,3,4的最佳收率。在二乙胺存在下,HMPA中的6-四-O-乙酰基-1-S-乙酰基-1-硫代-β-d-吡喃葡萄糖。在这些条件下,减少了不饱和副产物的形成。