Facile cleavage of carbohydrate benzyl ethers and benzylidene acetals using the reagent under two-phase conditions
作者:Matteo Adinolfi、Gaspare Barone、Luigi Guariniello、Alfonso Iadonisi
DOI:10.1016/s0040-4039(99)01756-6
日期:1999.11
benzylidene acetal carbohydrate protecting groups can be selectively cleaved by reaction with sodium bromate/sodium dithionite in ethyl acetate/water. Under the mild (room temperature, short reaction time) conditions needed, a variety of other protecting functionalities such as acetyl, chloroacetyl, benzoyl, pivaloyl, tosyl, t-butyldimethylsilyl, trityl, and isopropylidene groups remain unaffected.
苄基醚和亚苄基缩醛碳水化合物保护基团可以通过与溴酸钠/连二亚硫酸钠在乙酸乙酯/水中反应选择性地裂解。在所需的温和(室温,短反应时间)条件下,各种其他保护功能如乙酰基,氯乙酰基,苯甲酰基,新戊酰基,甲苯磺酰基,叔丁基二甲基甲硅烷基,三苯甲基和异亚丙基仍不受影响。