A novel strategy to the synthesis of 4-anilinoquinazoline derivatives
作者:Zheng Wang、Cuiling Wang、Yanni Sun、Ning Zhang、Zhulan Liu、Jianli Liu
DOI:10.1016/j.tet.2013.12.028
日期:2014.1
A novel approach to prepare 4-anilinoquinazoline derivatives based on the transformation of indoline-2,3-dione to formamidine was developed. The processes with this approach are simple, efficient, and environmentally friendly. The efficiency of this approach was evaluated by synthesizing 17 4-anilinoquinazolines and comparing the obtained yields with those achievable through conventional synthetic
A 4-aminoquinazoline derivative can be obtained by the steps of reacting quinazolin-4-one or its derivative with a chlorinating agent in a first organic solvent in the presence of an organic base, and subsequently reacting the reaction product with an amine compound represented by the formula R
5
—NH—R
6
(each of R
5
and R
6
represents hydrogen or an optionally substituted hydrocarbyl group) in the presence of a second organic solvent.
Inhibition of receptor tyrosine kinases (RTKs) continued to be a successful approach for the treatment of many types of human cancers and many potent small molecules kinase inhibitors have been discovered the last decade. In the present study, we describe the synthesis of thienopyrimidine derivatives and their pharmacological evaluation against nine kinases (EGFR, PDGFR-ss, c-Kit, c-Met, Src, Raf, VEGFR-1, -2 and -3). Most of the synthesized compounds showed from moderate to potent activities against c-Kit with IC50 values in the nanomolar range. Among them, 4-anilino(urea) thienopyrimidine analogs showed selectivity and potent c-Kit inhibition with IC50 values less than 6 nM. Docking simulation was performed for the most promising compound 9 into the c-Kit active site to determine the potential binding mode. This study reveal that the 4-anilino(urea) thienopyrimidine is an interesting scaffold to design novel potent and selective c-Kit inhibitors which may make promising candidates for cancers where c-Kit receptors are overexpressed. (C) 2015 Elsevier Ltd. All rights reserved.
Compounds that Inhibit Hiv Particle Formation
申请人:Rekosh David
公开号:US20080318959A1
公开(公告)日:2008-12-25
The present invention describes novel methods of identifying compounds which inhibit HIV particle formation and Rev-dependent HIV production. The present invention also provides methods and compounds for inhibiting HIV particle formation and or treating patients infected with HIV.