Highly stereoselective synthesis of a seven-membered carbasugar via triisobutylaluminium promoted Claisen rearrangement
摘要:
2-Methylene-5-vinyl-tetrahydrofuran derivative 6 was obtained from alpha-D-glucose. Treatment of 6 with triisobutylaluminium (TIBAL) induced Claisen expansion reaction to give the seven-membered carbasugar derivative 7, which represents a new type of chiral building blocks. The rearrangement reaction has been proved to be highly stereoselective. (C) 2003 Elsevier Ltd. All rights reserved.
Synthesis of the AB Subunit of Angelmicin B through a Tandem Alkoxy Radical Fragmentation-Etherification Sequence
作者:Jialiang Li、Louis J. Todaro、David R. Mootoo
DOI:10.1021/ol703036y
日期:2008.4.1
The synthesis of the tricyclic enone 2, corresponding to the AB subunit of the novel tyrosine kinase inhibitor angelmicin B, is described. The strategy centers on an intramolecular Diels-Alder (IMDA) reaction on triene 4 to provide the complex decalin 3, which is elaborated to 2. Other key steps are the formation of the THF ring in 2 through a tandem alkoxy radical fragmentation-etherification on the
Highly stereoselective synthesis of a seven-membered carbasugar via triisobutylaluminium promoted Claisen rearrangement
作者:Cai Jia、Yongmin Zhang、Lihe Zhang
DOI:10.1016/s0957-4166(03)00490-7
日期:2003.8
2-Methylene-5-vinyl-tetrahydrofuran derivative 6 was obtained from alpha-D-glucose. Treatment of 6 with triisobutylaluminium (TIBAL) induced Claisen expansion reaction to give the seven-membered carbasugar derivative 7, which represents a new type of chiral building blocks. The rearrangement reaction has been proved to be highly stereoselective. (C) 2003 Elsevier Ltd. All rights reserved.