[EN] TRISUBSTITUTED PHENYL DERIVATIVES<br/>[FR] DERIVES DE PHENYLE A TRISUBSTITUTION
申请人:NOVARTIS AG
公开号:WO1996028430A1
公开(公告)日:1996-09-19
(EN) The invention concerns compounds of formula (I), wherein the substituents have various meanings, and their use in the prevention or treatment of inflammatory and proliferative skin diseases and cancer.(FR) L'invention se rapporte à des composés de la formule (I) dans laquelle les substituants possèdent plusieurs notations, et à l'utilisation de ceux-ci dans la prévention ou le traitement de maladies de la peau de type inflammatoire et prolifératif, ainsi que du cancer.
A Practical Synthesis of 6-[2-(2,5-Dimethoxyphenyl)ethyl]-4-ethylquinazoline and the Art of Removing Palladium from the Products of Pd-Catalyzed Reactions
作者:Kurt Königsberger、Guang-Pei Chen、Raeann R. Wu、Michael J. Girgis、Kapa Prasad、Oljan Repič、Thomas J. Blacklock
DOI:10.1021/op034072x
日期:2003.9.1
A concise large-scale synthesis of 1, a new antimitotic agent is described. The key step was a one-pot Sonogashira cross-coupling of an aryl halide with a heteroaryl halide through an acetylene using the readily available 2-methyl-3-butyn-2-ol (7). An innovative approach for palladium removal was designed and successfully scaled-up on a multikilogram scale. The product was crystallized from the crude reaction mixture while keeping the residual palladium in the mother liquor by using Pd-scavenging agents such as N-acetylcysteine or thiourea.
Trisubstituted phenyl derivatives
申请人:Novartis AG
公开号:US05990116A1
公开(公告)日:1999-11-23
The invention concerns compounds of formula I ##STR1## wherein the substituents have various meanings, and their use in the prevention or treatment of inflammatory and proliferative skin diseases and cancer.