A stereoselective cyclisation cascade mediated by SmI2–H2O: synthetic studies towards stolonidiol
摘要:
A cascade reaction involving sequential conjugate reduction, stereoselective aldol cyclisation and chemo-selective lactone reduction mediated by SmI2-H2O provides access to a cyclopentanol bearing two vicinal quaternary stereocentres with good stereocontrol. The functionalised cyclopentanol product has been converted to a key intermediate in ongoing asymmetric studies towards stolonidiol. (C) 2010 Elsevier Ltd. All rights reserved.
Alkylative carbonyl transposition of dihydro-α-pyrones to dihydro-α-pyrones
作者:A. Nangia、P.Bheema Rao
DOI:10.1016/s0040-4039(00)77655-6
日期:1993.4
Dihydro-α-pyrones (2) are prepared from β-hydroxy ketones (1). Dihydropyrones (2) are transformed to unsaturated δ-lactones (4) via an alkylative 1,3-carbonyl transposition.
[EN] EPOTHILONE ANALOGUES AS THERAPEUTIC AGENTS<br/>[FR] ANALOGUES D'EPOTHILONE EN TANT QU'AGENTS THERAPEUTIQUES
申请人:UNIV EMORY
公开号:WO2006017761A2
公开(公告)日:2006-02-16
Epothilone analogues represented by Formulas I-IX useful as microtubule stabilizing agents and in the treatment of abnormal cellular proliferation diseases and disorders are disclosed. Methods of making the compounds, compositions containing the compounds, 3D binding models of the binding of epothilone analogues on α,β-tubulin, and methods for its use in predicting, designing, or selecting therapeutically useful epothilone analogues are also provided.