Reactions of tropolone (1a) and 3-isopropenyl-, 3-acetyl-, 3- acetamido-, and 5-bromotropolones 1b-e with 2,3,4,6-tetra-O-acet- yl-α-d-glucopyranosyl bromide were carried out in the presence of silver carbonate at 80°C. Unsubstituted, 3′-/7′-isopropenyl-, 7′-acetyl-, 7′-acetamido-, and 5′-bromo-substituted 2′-troponyl 2,3,4,6-tetra-O-acetyl-β-d-glucopyranosides were respectively obtained.
在80°C下,以
碳酸银存在的条件下,将卓泼酮(1a)和3-异
丙烯基-、3-乙酰基-、3-乙酰
氨基-以及5-
溴代卓泼酮1b-e与2,3,4,6-四-O-乙酰基-α-d-
吡喃
葡萄糖溴苷进行反应。分别得到未取代的、3′-/7′-异
丙烯基-、7′-乙酰基-、7′-乙酰
氨基-和5′-
溴代-取代的2′-卓泼酮基2,3,4,6-四-O-乙酰基-β-d-
吡喃
葡萄糖苷。