A 2,6,9-hetero-trisubstituted purine inhibitor exhibits potent biological effects against multiple myeloma cells
摘要:
A focused library of hetero-trisubstituted purines was developed for improving the cell penetrating and biological efficacy of a series of anti-Stat3 protein inhibitors. From this SAR study, lead agent 22e was identified as being a promising inhibitor of MM tumour cells (IC50's <5 mu M). Surprisingly, biophysical and biochemical characterization proved that 22e was not a Stat3 inhibitor. Initial screening against the kinome, prompted by the purine scaffold's history for targeting ATP binding pockets, suggests possible targeting of the JAK family kinases, as well for ABL1 (nonphosphorylated F317L) and AAK1. (C) 2013 Elsevier Ltd. All rights reserved.
[EN] FACTOR XIa INHIBITORS<br/>[FR] INHIBITEURS DU FACTEUR XIA
申请人:MERCK SHARP & DOHME
公开号:WO2015164308A1
公开(公告)日:2015-10-29
The present invention provides a compound of Formula (I) and pharmaceutical compositions comprising one or more said compounds, and methods for using said compounds for treating or preventing thromboses, embolisms, hypercoagulability or fibrotic changes. The compounds are selective Factor XIa inhibitors or dual inhibitors of Factor XIa and plasma kallikrein.
tetrazole (1,5-Tz) in several cases. The regioselectivities (1,5-Tz:2,5-Tz) are highly variable and cannot be exclusively attributed to the steric hindrance of the electrophile. A new rationale to explain the observed regioselectivity, based on the difference in mechanism between first- and second-order nucleophilic substitutions, is thus proposed. In addition, in some cases the intramolecular stabilization
二取代四唑的合成描述了从 1 H -5-单取代四唑通过脂族胺重氮化反应,形成瞬时烷基重氮中间体,充当烷基化剂。尽管 2,5-二取代四唑 (2,5-Tz) 以中等至极好的收率优先形成,但在几种情况下也可以分离出少量的 1,5-二取代四唑 (1,5-Tz)。区域选择性(1,5-Tz:2,5-Tz)是高度可变的,不能完全归因于亲电试剂的空间位阻。因此,基于一级和二级亲核取代之间的机制差异,提出了解释观察到的区域选择性的新原理。此外,在某些情况下,所得重氮的分子内稳定性会影响区域选择性。
WO2008/157162
申请人:——
公开号:——
公开(公告)日:——
Design, synthesis and structure–activity-relationship of 1,5-tetrahydronaphthyridines as CETP inhibitors
作者:Maria-Carmen Fernandez、Ana Escribano、Ana I. Mateo、Saravanan Parthasarathy、Eva M. Martin de la Nava、Xiaodong Wang、Sandra L. Cockerham、Thomas P. Beyer、Robert J. Schmidt、Guoqing Cao、Youyan Zhang、Timothy M. Jones、Anthony Borel、Stephanie A. Sweetana、Ellen A. Cannady、Gregory Stephenson、Scott Frank、Nathan B. Mantlo
DOI:10.1016/j.bmcl.2012.03.075
日期:2012.5
This Letter describes the discovery and SAR optimization of 1,5-tetrahydronaphthyridines, a new class of potent CETP inhibitors. The effort led to the identification of 21b and 21d with in vitro human plasma CETP inhibitory activity in the nanomolar range (IC50 = 23 and 22 nM, respectively). Both 21b and 21d exhibited robust HDL-c increase in hCETP/hApoA1 dual heterozygous mice model. (C) 2012 Elsevier Ltd. All rights reserved.