Alkylalanes and methyl furanosides: regioselective O-debenzylation or acetal cleavage
作者:Cai Jia、Yongmin Zhang、Li-He Zhang、Pierre Sinaÿ、Matthieu Sollogoub
DOI:10.1016/j.carres.2006.05.002
日期:2006.9
Perbenzylated methyl pentofuranosides were submitted to the action of three alkylalanes and regioselective debenzylation at O-2 of the four pentoses was observed when choosing the right match between anomeric configuration and aluminium reagent. Diisobutylalane (DIBAL-H) allowed an easy access to reduced open-chain compounds, whereas trimethylalane (TMAL) stereoselectively produced methylated open chain derivatives. (c) 2006 Elsevier Ltd. All rights reserved.