作者:Mayuka Nakanishi、Daisuke Takahashi、Kazunobu Toshima
DOI:10.1039/c3ob41143e
日期:——
The O-glycosylation of several unprotected deoxythioglycosides and alcohols using 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ) under long-wavelength UV irradiation was effectively realized using a single electron transfer (SET) mechanism. In some cases, the use of p-methoxyboronic acid was very effective in temporary protection of the 1,3-diol (C4 and C6 positions) of the unprotected glycosyl donors to increase the yields of the obtained O-glycosides.
使用单电子转移(SET)机制,在长波长紫外照射下,使用2,3-二氯-5,6-二氰基-对苯醌(DDQ)有效实现了几种未保护的脱氧硫代糖苷和醇的O-糖基化。在某些情况下,使用对甲氧基硼酸对未受保护的糖基供体的 1,3-二醇(C4 和 C6 位)进行临时保护非常有效,从而提高了所获得的 O-糖苷的产率。