Selective Oxidation of Glycosyl Sulfides to Sulfoxides Using Magnesium Monoperoxyphthalate and Microwave Irradiation
摘要:
A protocol that uses moist magnesium monoperoxyphthalate (MMPP) as an oxidant under microwave irradiation rapidly yields a variety of glycosyl sulfoxides from corresponding sulfides in high yields with high selectivity.
Chemoselective deprotection of acid labile primary hydroxyl protecting groups under CBr4-photoirradiation conditions
摘要:
The CBr4-photoirradiation in methanol generates a controlled source of HBr, which can chemoselectively deprotect commonly used hydroxyl-protecting groups in saccharides and nucleosides, such as tert-butyldimethylsilyl, isopropylidene, benzylidene and triphenyl ethers in the presence of other acid-labile functional groups. (C) 2004 Elsevier Ltd. All rights reserved.
An efficient and selective method for preparing glycosyl sulfoxides by oxidizing glycosyl sulfides with OXONE or t-BuOOH on SiO2
作者:Ming-Yi Chen、Laxmikant Narhari Patkar、Hui-Ting Chen、Chun-Cheng Lin
DOI:10.1016/s0008-6215(03)00164-2
日期:2003.6
Silica gel adsorbed with OXONE or t-BuOOH was used as a mild oxidant to selectively oxidize glycosyl sulfides to corresponding sulfoxides in good yields and without sulfones formation. This method was also found compatible with various other functional groups in the glycosides. (C) 2003 Elsevier Science Ltd. All rights reserved.