Direct Tryptophols Synthesis from 2-Vinylanilines and Alkynes via C≡C Triple Bond Cleavage and Dioxygen Activation
作者:Tao Shen、Yiqun Zhang、Yu-Feng Liang、Ning Jiao
DOI:10.1021/jacs.6b08094
日期:2016.10.12
metal-free C≡C triple bondcleavage, dioxygen activation, and reassembly into tryptophol derivatives has been developed. This chemistry provides a novel, simple, and efficient approach to highly valuable tryptophol derivatives from simple substrates under mild conditions. The mechanistic studies may promote the discovery of new methodologies through C-C bondcleavage and dioxygen activation.
已经开发出一种意想不到的无金属 C≡C 三键断裂、双氧活化和重新组装成色氨酸衍生物。这种化学反应提供了一种新颖、简单且有效的方法,可以在温和条件下从简单底物获得高价值的色氨酸衍生物。机理研究可能会通过 CC 键裂解和分子氧活化促进新方法的发现。
Benzimidazole derivatives and their use as KDR kinase protein inhibitors
申请人:Babin Didier
公开号:US20050009894A1
公开(公告)日:2005-01-13
The invention discloses and claims benzimidazole compounds of formula (I):
wherein X is C—R2; Y is C—R2 or C—R3; W and Z are each C—R3; R1 is an optionally substituted aryl, heteroaryl or a saturated 5- or 6-membered monocyclic heterocyclic radical or a bicyclic heterocyclic radical; and A5 is H or alkyl; or a stereoisomer, a racemate, an enantiomer or a diastereoisomer of said compound of formula (I) or a pharmaceutically acceptable salt thereof; the use of compounds of formula (I) for the treatment of a disorder of proliferation of blood vessels, uncontrolled angiogenesis, a fibrotic disorder, a disorder of proliferation of mesangial cells, a metabolic disorder, allergy, asthma, thrombosis, a disease of the nervous system, retinopathy, psoriasis, rheumatoid arthritis, diabetes, muscle degeneration, solid tumors and cancers, pharmaceutical compositions comprising a compound of formula (I) and one or more pharmaceutically acceptable adjuvants or diluents and pharmaceutical compositions comprising a compound of formula (I) and one or more. antimitiotic agents.
A novel process for preparing a naphthalene derivative of the formula:
wherein each of R¹ and R² is a lower alkyl group; one of R³ and R⁴ is hydrogen atom or a lower alkoxy group and the other is a lower alkoxy group; and Ring A is a substituted or unsubstituted benzene ring, or a pharmaceutically acceptable salt thereof is disclosed. Said compound is useful as a hypolipidemic agent.
Acetylenedicarboxylates undergo trans-addition of tetraalkoxydiboron in THF at 60 °C in the presence of 4,4′-bipyridine (5 mol %) as a catalyst to give 2,3-diborylfumarates in good yields with high stereoselectivity.