Trimethylaluminium promoted rearrangements of unsaturated sugars into cyclohexanes
摘要:
Trimethylaluminium induces a stereoselective rearrangement of unsaturated glycosides into polyfunctionalised cyclohexanic rings containing a tertiary alcohol and retaining the anomeric group. In contrast with the previously used triisobutylaluminium, no de-O-benzylation reaction was observed. (C) 2003 Elsevier Ltd. All rights reserved.
Trimethylaluminium promoted rearrangements of unsaturated sugars into cyclohexanes
作者:Cai Jia、Alan J. Pearce、Yves Blériot、Yongmin Zhang、Li-He Zhang、Matthieu Sollogoub、Pierre Sinaÿ
DOI:10.1016/j.tetasy.2003.11.029
日期:2004.2
Trimethylaluminium induces a stereoselective rearrangement of unsaturated glycosides into polyfunctionalised cyclohexanic rings containing a tertiary alcohol and retaining the anomeric group. In contrast with the previously used triisobutylaluminium, no de-O-benzylation reaction was observed. (C) 2003 Elsevier Ltd. All rights reserved.
Synthesis of neamine-derived pseudodisaccharides by stereo- and regio-selective functional group transformations
作者:Li-Juan Pang、Dan Wang、Jian Zhou、Li-He Zhang、Xin-Shan Ye
DOI:10.1039/b907518f
日期:——
Neamine is normally found as a core structure of aminoglycoside antibiotics. In order to understand the relationship between the antibiotic activity and the configurations of the functional groups of neamine, a series of novel neamine analogues with functional group manipulations on the 2-deoxystreptamine (2-DOS) ring or the sugar ring were designed and synthesized. The synthetic approach involved