Synthesis of N-β-d-glucopyranosyl derivatives of barbital, phenobarbital, metharbital, and mephobarbital
作者:William H. Soine、Phyllis J. Soine、Terry M. England、Bruce W. Overton、Shiva Merat
DOI:10.1016/0008-6215(89)85110-9
日期:1989.10
of per(trimethyl)silylbarbital and -phenobarbital with 1,2,3,4,6-penta-O-acetyl-beta-D-glucopyranose in the presence of stannic chloride in dichloroethane gave moderate yields of the beta-coupled barbiturate N-D-glucopyranosyl derivatives. Reaction of metharbital and mephobarbital under the same conditions was unsuccessful. The homologous N-methylglucosides were prepared by reaction of the barbital and
在二氯乙烷中存在氯化锡的情况下,全(三甲基)甲硅烷基巴比妥和苯巴比妥与1,2,3,4,6-戊-O-乙酰基-β-D-吡喃葡萄糖的缩合反应可得到中等产率的β偶联巴比妥酸酯ND-吡喃葡萄糖基衍生物。在相同条件下,美法比妥和美巴比妥的反应不成功。通过使巴比妥和苯巴比妥N-葡糖基衍生物与重氮甲烷反应来制备同源的N-甲基葡糖苷。苯巴比妥和甲氧巴比妥衍生物的非对映异构体通过使用C-18反相hplc 1H-和13C-nmr光谱仪进行拆分,热喷涂1.c.-ms被证明是表征巴比妥酸盐的最有用方法。