作者:Michael T. Crimmins、Alan Long
DOI:10.1021/ol0515107
日期:2005.9.1
[structure: see text] The de novo synthesis of the C9 and C27 sugar subunits (2) and (3), respectively, of the potent antitumor agent, apoptolidin, has been accomplished. A titanium tetrachloride-mediated asymmetric anti glycolate aldol addition was utilized to establish the 4' and 5' stereogenic centers of each of the three monosaccharides. Elaboration of the aldol adducts efficiently provided the
[结构:见正文]已经完成了有效抗肿瘤剂凋亡小肽C9和C27糖亚基(2)和(3)的从头合成。利用四氯化钛介导的不对称抗乙醇酸羟醛醇醛加成物来建立三个单糖的每个的4'和5'立体中心。醛醇加合物的精心制备有效地提供了三个糖单元。β选择性糖基化完成了C27二糖的构建。