(1S)-1,2-O-苄叉基-α-D-葡糖醛酸-6,3-内酯
(1S)-1,2-O-Benzyl-idene-α-d-glucurono-6,3-lactone.
作者信息
Jenkinson Sarah F, Best Daniel, Weymouth-Wilson Alexander C, Clarkson Robert A, Fleet George W J, Watkin David J
出版信息
Acta Crystallogr Sect E Struct Rep Online. 2009 Jan 31;65(Pt 2):o414-5. doi: 10.1107/S1600536809002876.
X-ray crystallographic analysis has established that the major product from the protection of d-glucoronolactone with benzaldehyde is (1S)-1,2-O-benzyl-idene-α-d-glucurono-6,3-lactone, C(13)H(12)O(6), rather than the R epimer. The crystal structure exists as O-H⋯O hydrogen-bonded chains of mol-ecules lying parallel to the a axis. The absolute configuration was determined by the use of d-glucuronolactone as the starting material.
X射线晶体学分析表明，用苯甲醛保护D-葡糖醛酸内酯的主要产物是(1S)-1,2-O-亚苄基-α-D-葡糖醛酸-6,3-内酯，C(13)H(12)O(6)，而非R型差向异构体。晶体结构以分子间O-H⋯O氢键连接的链状形式存在，这些链平行于a轴。绝对构型通过以D-葡糖醛酸内酯为起始原料来确定。
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