Highly regio- and stereo-selective C-arylglycosylations of the protected free sugars 1–4, the unprotected methyl glycosides 6–9 and the unprotected free sugars 10 and 11 with 2-naphthol 5 are effectively realized by the combined use of TMSOTf–AgClO4(TMSOTf = trimethylsilyloxytrifluoromethanesulfonate) as a catalytic activator.
通过 TMSOTf-AgClO4 的组合使用,可以有效实现受保护的游离糖 1-4、未受保护的甲基糖苷 6-9 以及未受保护的游离糖 10 和 11 与
2-萘酚 5 的高度区域和立体选择性 C-芳基糖基化(TMSOTf = 三甲基
硅氧基
三氟甲磺酸盐)作为催化活化剂。