Total syntheses of (+)- and (−)-1,3,4,5-tetragalloylapiitol and revision of absolute configuration of naturally occurring (−)-1,3,4,5-tetragalloylapiitol
作者:Masaru Kojima、Yutaka Nakamura、Shoji Akai、Ken-ichi Sato、Seiji Takeuchi
DOI:10.1016/j.tet.2011.08.088
日期:2011.10
The total syntheses of (+)- and (−)-1,3,4,5-tetragalloylapiitol were achieved in seven steps from d- and l-ribose, respectively. By comparing the optical rotations of both enantiomers with those of the natural product, the absolute configuration at C-3 in the naturally occurring 1,3,4,5-tetragalloylapiitol has been revised to R. The absolute configurations at C-3 in the synthetic (+)- and (−)-1,3,4
(+)-和(-)-1,3,4,5-四没食子基apiitol的总合成分别从d-核糖和1-核糖分七个步骤完成。由两种对映体的旋光度与天然产物,绝对构型的在C-3中天然存在的1,3,4,5- tetragalloylapiitol比较已被修改为- [R 。合成的(+)-和(-)-1,3,4,5-四没食子酰基apiitol中C-3的绝对构型通过圆二色性激子手性方法进一步证实。