2-Benzimidazolyl-9-(chroman-4-yl)-purinone derivatives as JAK3 inhibitors
摘要:
A novel class of Janus tyrosine kinase 3 (JAK3) inhibitors based on a 2-benzimidazoylpurinone core structure is described. Through substitution of the benzimidazoyl moiety and optimization of the N-9 substituent of the purinone, compound 24 was identified incorporating a chroman-based functional group. Compound 24 shows excellent kinase activity, good oral bioavailability and demonstrates efficacy in an acute mechanistic mouse model through inhibition of interleukin-2 (IL-2) induced interferon-gamma (INF-gamma) production. (C) 2009 Elsevier Ltd. All rights reserved.
Decarboxylative Acylation of Cyclic Enamides with α-Oxocarboxylic Acids by Palladium-Catalyzed C–H Activation at Room Temperature
作者:Hua Wang、Li-Na Guo、Xin-Hua Duan
DOI:10.1021/ol301801r
日期:2012.9.7
efficient catalytic decarboxylative acylation of unactivated sp2 (alkenyl) C–H bonds has been developed. Various substituted α-oxocarboxylic acids with different electronic properties react under mild conditions to afford a diverse range of β-acyl enamide products in good yields. The reaction is proposed to proceed via a cyclic vinylpalladium intermediate, facilitating the decarboxylative dehydrogenative
Direct arylation of cyclic enamides via Pd(ii)-catalyzed C–H activation
作者:Hai Zhou、Wan-Jun Chung、Yun-He Xu、Teck-Peng Loh
DOI:10.1039/b903151k
日期:——
A new direct coupling of cyclic enamides with aryl boronic acids viaPd(II)-catalyzed CâH functionalization has been achieved with good yields (up to 90%).
2,3-Dihydro-4H-1-benzopyran-4-one O-Carbamoyloximes, a Series of Gastric Antisecretory Agents
作者:George C. Wright、Thomas J. Schwan、Marvin M. Goldenberg、Ronald E. White
DOI:10.1002/jps.2600721134
日期:1983.11
A series of 2,3-dihydro-4H-1-benzopyran-4-oneO-carbamoyloximes were synthesized and evaluated for gastricantisecretory activity in a pylorus-ligated rat model. Various substituents in the 6-position did not afford any compounds more active than I.