A unified approach to systematic isosteric substitution for acidic groups and application to NMDA antagonists related to 2-amino-7-phosphonoheptanoate
摘要:
A systematic approach to the replacement of acidic groups with potential bioisosteres is described. The strategy involves simple nucleophilic displacement of a common alkyl halide precursor with a variety of mercaptoazoles and related molecules. The mercaptoazoles and their oxidized derivatives (sulfinyl- and sulfonylazoles) represent a series of possible surrogates for acidic groups which span a pKa range from about 4.5-11.5. This simple strategy was extended to include 2-hydroxy- or 2-aminothiophenyl groups which function as relatively nonacidic isosteres for a phosphonic acid. By replacing the phosphonic acid of 2-amino-7-phosphonoheptanoate (AP-7) with these groups, we have synthesized novel N-methyl-d-aspartate (NMDA) antagonists.
Benzylsulfonyl diethylcarbamyl triazole and use as a selective herbicide
申请人:Gulf Oil Corporation
公开号:US04280831A1
公开(公告)日:1981-07-28
The novel compound having the structural formula ##STR1## is disclosed, as well as its use by pre-emergent application to control noxious grasses and some broadleaf weeds in cool season crops such as rape, sugar beets and flax.
Carbamoyl Triazoles, Known Serine Protease Inhibitors, Are a Potent New Class of Antimalarials
作者:Matthew McConville、Jorge Fernández、Íñigo Angulo-Barturen、Noemi Bahamontes-Rosa、Lluis Ballell-Pages、Pablo Castañeda、Cristina de Cózar、Benigno Crespo、Laura Guijarro、María Belén Jiménez-Díaz、Maria S. Martínez-Martínez、Jaime de Mercado、Ángel Santos-Villarejo、Laura M. Sanz、Micol Frigerio、Gina Washbourn、Stephen A. Ward、Gemma L. Nixon、Giancarlo A. Biagini、Neil G. Berry、Michael J. Blackman、Félix Calderón、Paul M. O’Neill
DOI:10.1021/acs.jmedchem.5b00434
日期:2015.8.27
filtered the TCAMS through a variety of criteria and reported 47 series containing a total of 522 compounds. From this enhanced set, we identified the carbamoyl triazole TCMDC-134379 (1), a known serineprotease inhibitor, as an excellent starting point for SAR profiling. Lead optimization of 1 led to several molecules with improved antimalarial potency, metabolic stabilities in mouse and human liver microsomes
对 GSK 公司收集的约 190 万种化合物针对恶性疟原虫( Pf ) 进行筛选后,发现了近 14000 种有效命中,现在称为 Tres Cantos Antimalarial Set (TCAMS)。Calderon 等人的后续工作。通过各种标准对 TCAMS 进行聚类和计算过滤,并报告了 47 个系列,共包含 522 种化合物。从这个增强的集合中,我们确定了氨基甲酰三唑 TCMDC-134379 ( 1 ),一种已知的丝氨酸蛋白酶抑制剂,作为 SAR 分析的一个很好的起点。1的先导优化导致几种分子具有改善的抗疟效力、小鼠和人肝微粒体中的代谢稳定性以及可接受的细胞毒性特征。类似物图44在Pf感染的SCID小鼠模型中显示出有效的体外活性(IC 50 = 10nM)和口服活性, ED 50分别为100和ED 90在100和150mg kg -1之间。呈现的结果鼓励进一步研究以确定这些高活性化合物的目标。