作者:Mark W. Peczuh、Nicole L. Snyder、W. Sean Fyvie
DOI:10.1016/j.carres.2004.01.022
日期:2004.4
The synthesis and X-ray crystal structure of a D-xylose-based oxepine are reported. The oxepine was prepared from 2,3,4-tri-O-benzyl-D-xylose by the three-step sequence (Wittig olefination, vinyl ether formation, and ring closing metathesis) we recently reported. Epoxidation of this cyclic enol ether using dimethyldioxirane (DMDO) gave 1,2-anhydro-beta-D-idoseptanose, which was trapped by a number
报道了基于D-木糖的奥沙平的合成和X射线晶体结构。通过我们最近报道的三步顺序(Wittig烯化,乙烯基醚形成和闭环易位),由2,3,4-三-O-苄基-D-木糖制备了奥索平。使用二甲基二环氧乙烷(DMDO)对该环状烯醇醚进行环氧化,得到1,2-脱水β-D-异庚糖,被许多亲核试剂捕获,得到α-异庚糖苷。根据产物分析确定环氧化的立体化学。比较了甲醇分解产物11衍生的甲基2,3,4,5-四-O-乙酰基-α-D-氨基庚糖苷的光谱数据与其对映异构体的数据,即已知的甲基2,3,4,5-四-O-乙酰基-α-L-idoseptanoside。