Selective Cleavage of 2,3-<i>O</i>-Isopropylidene Group: A Case of Anchimeric Assistance from <i>O</i>-Glycoside
作者:Radhika Wakharkar、Manjusha Sahasrabuddhe、Hanumant Borate、Mukund Gurjar
DOI:10.1055/s-2004-829128
日期:——
Alkyl 2,3-O-isopropylidene-5-O-methoxymethylfuranoside derivatives undergo selective cleavage of the 2,3-O-isopropylidene group, if oriented cis to the O-glycoside, in the presence of trifluoroacetic acid. Otherwise, the cleavage of the 5-O-methoxymethyl group is favoured over the 2,3-O-isopropylidene group.
烷基 2,3-O-异亚丙基-5-O-甲氧基甲基呋喃糖苷衍生物在三氟乙酸的作用下,如果 2,3-O-异亚丙基与 O-糖苷呈顺式排列,则 2,3-O-异亚丙基会发生选择性裂解。否则,5-O-甲氧基甲基的裂解比 2,3-O-异亚丙基更有利。