The chemistry of castanospermine. Direct oxidation of the tetraacetate to the corresponding γ-lactam
作者:Richard H Furneaux、Graeme J Gainsford、Jennifer M Mason、Peter C Tyler
DOI:10.1016/j.carres.2004.05.006
日期:2004.7
From the products of oxidation of tetra-O-acetylcastanospermine (2) with N-bromosuccinimide, only the gamma-lactam 11 was isolated (19%). Treatment of this lactam with DBU in dichloromethane afforded the elimination product 12, while deacetylation with sodium methoxide in methanol gave tetraol 13 together with diene 14. The X-ray crystal structure of compound 13 is reported.
从N-溴代琥珀酰亚胺氧化四-O-乙酰基castanospermine(2)的产物中,仅分离出γ-内酰胺11(19%)。用DBU在二氯甲烷中处理该内酰胺,得到消除产物12,而在甲醇中用甲醇钠脱乙酰,得到四醇13和二烯14。报道了化合物13的X射线晶体结构。