By using Hf(OTf)4 as the catalyst, a series of 2,3-N- and C-unsaturated-glucosides have been synthesized from 3,4,6-tri-O-acetyl-d-glucal, 2,4,6-tri-O-benzyl-d-glucal and ((2R,3S)-3-acetoxy-2,3-dihydrofuran-2-yl)methyl acetate under mild reaction conditions in good yields with high anomeric selectivities.
通过使用HF(OTF)4作为催化剂,一系列2,3- ñ -和ç不饱和
葡糖苷已经从3,4,6-三-合成ö乙酰基d -glucal,2,4-, 6-三ö苄基d -glucal和((2 - [R,3小号)-3-乙酰氧基-
2,3-二氢呋喃-2-基)甲基
乙酸酯以良好的收率与高选择性异头温和的反应条件下。