The invention relates to the use of derivatives of cyclopentenone for the inhibition or prevention of the growth or multiplication of cancer cells, and to therapeutic compositions containing such compounds. The invention relates more specifically to the use of derivatives of cyclopentenone for the inhibition and/or prevention of cancer of the colon, pancreas, larynx, ovary, duodenum, kidney, oral cavity, prostate, lung, endothelial cells and leukemias
[EN] CYCLOPENTENONE DERIVATIVES FOR CANCER THERAPY<br/>[FR] DERIVES DE CYCLOPENTENONE UTILISES POUR TRAITER DES CANCERS
申请人:DABUR RES FOUNDATION
公开号:WO2004056738A1
公开(公告)日:2004-07-08
The invention relates to the use of derivatives of cyclopentenone for the inhibition or prevention of the growth or multiplication of cancer cells, and to therapeutic compositions containing such compounds. The invention relates more specifically to the use of derivatives of cyclopentenone for the inhibition and/or prevention of cancer of the colon, pancreas, larynx, ovary, duodenum, kidney, oral cavity, prostate, lung, endothelial cells and leukemias.
cascade cyclization has been developed to streamline the synthesis of valuable multifunctionalized enantioenriched cyclopenta[f]pyrrolo[1,2-d][1,4]diazepinones bearing three contiguous stereocenters in high yields with excellent control of stereochemistry from a wide range of both readily available 2-furylcarbinols and (1H-pyrrol-1-yl)anilines, which represents the first asymmetric intramolecular conjugate
已经开发了手性布朗斯台德酸催化的高对映和非对映选择性级联环化反应,以简化合成有价值的多官能化对映体富集的环戊二烯[ f ]吡咯并[1,2- d ] [1,4]二氮杂吡啶酮的方法,该化合物高产率地具有三个连续的立体中心,且具有优异的收率。广泛地使用2-呋喃基甲醇和(1 H-吡咯-1-基)苯胺来控制立体化学,这代表了α,β-不饱和环酮与惰性N-取代吡咯的首次不对称分子内共轭加成作为第一个对映选择性氮杂-piancatelli重排/ Friedel-Crafts烷基化级联反应。
Deprotonation of furans using lithium magnesates
作者:Florence Mongin、Aurélien Bucher、Jean Pierre Bazureau、Omar Bayh、Haçan Awad、François Trécourt
DOI:10.1016/j.tetlet.2005.09.066
日期:2005.11
Furan was deprotonated on treatment with 1/3 equiv of Bu3MgLi in THF at rt. The lithium arylmagnesate formed was either trapped with electrophiles or involved in a palladium-catalyzed cross-coupling reaction with 2-bromopyridine. The highly coordinated magnesate Bu4MgLi2 (1/3 equiv) proved to be a better deprotonating agent than Bu3MgLi; the monitoring of the reaction using NMR spectroscopy showed that the deprotonation of furan at rt required 2 h whereas the subsequent electrophilic trapping was instantaneous. The method was extended to benzofuran, allowing its functionalization at C2 in high yields. The deprotonation of 2-methylfuran and lithium furfurylalkoxide at C5 turned out to be difficult, requiring either long reaction times or higher temperatures. (c) 2005 Elsevier Ltd. All rights reserved.