A Mild, Highly Efficient, and Chemoselective Deprotection of Trityl Ethers of Carbohydrates and Nucleosides Using Iodine Monobromide¹
作者:K. P. Kartha、Satish Malik
DOI:10.1055/s-0029-1217356
日期:2009.7
Iodine monobromide in dichloromethane-methanol or acetonitrile constitutes an effective reagent for the deprotection of O-trityl and O-dimethoxytrityl ethers of carbohydrates and nucleosides. Acid-labile functionalities (acetals, O-p-methoxybenzyl ethers, etc.) as well as base-labile groups (esters and amides) are stable under these conditions; and the method has been found to be superior to the hitherto known literature methods.
在二氯甲烷-甲醇或乙腈中,一溴化碘构成了一种有效的试剂,用于去保护碳水化合物和核苷的O-三苯甲基和O-二甲氧基三苯甲基醚。酸性敏感功能团(如缩醛、O-对甲氧基苄基醚等)以及碱性敏感基团(如酯和酰胺)在这些条件下是稳定的;并且该方法已被发现优于迄今已知的文献方法。