Ring contraction and rearrangement of 4-thiofuranose derivatives observed during DAST fluorination in the synthesis of l-2′-“up”-fluoro-4′-thiothymidine
作者:Lak Shin Jeong、Hyung Ryong Moon、Su Jeong Yoo、Sun Nan Lee、Moon Woo Chun、Yoong-Ho Lim
DOI:10.1016/s0040-4039(98)01021-1
日期:1998.7
Ring contraction and rearrangement of 4-thiofuranose derivatives were observed through the regioselective opening of the episulfonium ion formed during DAST fluorination in the synthesis of l-2′-“up”-fluoro-4′-thiothymidine.
通过在合成1-2-2'-“上”-氟-4'-硫代胸苷的DAST氟化过程中形成的epi硫离子的区域选择性开口,观察到4-硫呋喃糖衍生物的环收缩和重排。