作者:V. Narasimharao Thota、Jacquelyn Gervay-Hague、Suvarn S. Kulkarni
DOI:10.1039/c2ob26078f
日期:——
Synthesis of β-C-D-galactosyl D- and L-alanines is carried out via a highly stereoselective Grignard reaction of glycosyl iodides, Sharpless dihydroxylation and SN2 displacement of the corresponding mesylate or tosylate. Alternatively, attempted triflation of the intermediate alcohols triggers a stereoselective debenzylative cyclization leading to interesting bicyclic trans-fused compounds.
β- C - D-半乳糖基D-和L-丙氨酸的合成通过糖基碘化物的高度立体选择性格氏反应、Sharpless二羟基化和相应甲磺酸酯或甲苯磺酸酯的S N 2 置换来进行。或者,中间体醇的三氟甲磺酸化尝试触发立体选择性脱苄基环化,导致有趣的双环反式稠合化合物。