Regioselectivity in cyclohexadienone photochemistry. Role of zwitterions in type A photochemical and dark rearrangements. Mechanistic and exploratory organic photochemistry
Strain-Release Rearrangement of <i>N</i>-Vinyl-2-Arylaziridines. Total Synthesis of the Anti-Leukemia Alkaloid (−)-Deoxyharringtonine
作者:Joseph D. Eckelbarger、Jeremy T. Wilmot、David Y. Gin
DOI:10.1021/ja063304f
日期:2006.8.1
Deoxyharringtonine (1) is among the most potent of the anti-leukemia alkaloids isolated from the Cephalotaxus genus. A convergent total synthesis of (-)-1 is reported, involving novel synthetic methods and strategies that include (1) the strain-release rearrangement of N-aryl-2-vinylaziridines for [3]benzazepine synthesis, (2) a vinylogous amide acylation-cycloaddition cascade for spiro-pyrrolidine
Synthesis of AntiproliferativeCephalotaxus Esters and Their Evaluation against Several Human Hematopoietic and Solid Tumor Cell Lines: Uncovering Differential Susceptibilities to Multidrug Resistance
作者:Joseph D. Eckelbarger、Jeremy T. Wilmot、Matthew T. Epperson、Chandar S. Thakur、David Shum、Christophe Antczak、Leonid Tarassishin、Hakim Djaballah、David Y. Gin
DOI:10.1002/chem.200701998
日期:2008.5.9
isolated from the Cephalotaxus genus. Convergent syntheses of these four natural products are described, each involving novel synthetic methods and strategies. These syntheses enabled evaluation of several advanced natural and non-natural compounds against an array of human hematopoietic and solidtumor cells. Potent cytotoxicity was observed in several cell lines previously not challenged with these
SUBSTITUTED BICYCLIC DIHYDROPYRIMIDINONES AND THEIR USE AS INHIBITORS OF NEUTROPHIL ELASTASE ACTIVITY
申请人:Boehringer Ingelheim International GmbH
公开号:US20160031830A1
公开(公告)日:2016-02-04
Substituted dihydropyrimidinones of formula 1
which are neutrophil elastase inhibitors and useful as medicaments for the treatment of, inter alia, COPD. Exemplary is
式1的替代二氢嘧啶酮是中性粒细胞弹性蛋白酶抑制剂,可用作治疗COPD等疾病的药物。
Thermolyse et photolyse de cetones non saturees—XXVIII
作者:J. Drouin、F. Leyendecker、J.M. Conia
DOI:10.1016/0040-4020(80)87019-0
日期:1980.1
Two ββ-dialkenyl- and ββ-dialkynyl-cyclopentanones 3 and 5 were synthesised using mixed methyl or t-butyl magnesiocuprates R2MeCu(MgX)2 and R2t-BuCu(MgX)2, where R is the alkenyl or alkynyl residue. Their thermal cyclisation leads to 2,8,9-functionalised [3.3.3)propellanones.
Process For Preparing Chlorinated Carbonyl Compounds In Jet Loop Reactors
申请人:Kutschera Dirk
公开号:US20080114196A1
公开(公告)日:2008-05-15
The present invention relates to a process for preparing chlorinated or partly chlorinated carbonyl compounds, which comprises reacting unchlorinated or partly chlorinated carbonyl compounds with a chlorinating agent in a jet loop reactor.