A fluorine scan of the phenylamidinium needle of tricyclic thrombin inhibitors: effects of fluorine substitution on pKaand binding affinity and evidence for intermolecular C–F⋯CN interactions
摘要:
三环凝血酶抑制剂的苯基氨定针中的氢原子与酶选择性口袋 S1 底部的 Asp189 发生相互作用,系统地将这些氢原子替换为氟原子,试图通过降低 pKa 值来改善药代动力学特性。F-替代后,pKa 值以及对凝血酶和胰蛋白酶的抑制常数 Ki 均有所降低。有趣的是,线性自由能关系(LFERs)显示,与胰蛋白酶相比,pKa 值的降低对凝血酶的结合亲和力影响更大。在苯基氨定针的 F-替代对抑制剂三环骨架中的三级胺中心 pKa 值的影响上观察到了意外现象,随后通过 X 射线晶体学分析和从头计算进行了合理化。通过对小分子 X 射线晶体结构的分析和剑桥结构数据库(CSD)的研究,获得了强方向性分子间 C–F⋯CN 交互作用的证据。
Inhibition by Water during Heterogeneous Brønsted Acid Catalysis by Three-Dimensional Crystalline Organic Salts
作者:Alexander Gak、Svetlana Kuznetsova、Yulia Nelyubina、Alexander A. Korlyukov、Han Li、Michael North、Vladimir Zhereb、Vladimir Riazanov、Alexander S. Peregudov、Ekaterina Khakina、Nikolai Lobanov、Victor N. Khrustalev、Yuri N. Belokon
DOI:10.1021/acs.cgd.1c00838
日期:2021.11.3
protonation of aniline derivatives (tetrakis(4-aminophenyl)methane, leuco-crystal violet, benzidine, and p-phenylenediamine) with aromatic sulfonic acids (tetrakis(phenyl-4-sulfonic acid)methane, and 2,6-naphthalenedisulfonic acid). As a result, five three-dimensional crystalline organic salts (F-1a, F-1b, F-1c, F-2, and F-3) were obtained, linked by hydrogen bonds and additionally stabilized by the opposite
HETEROCYCLIC COMPOUND INTERMEDIATE, PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
申请人:Wuhan LL Science And Technology
Development Co., Ltd.
公开号:EP3889154A1
公开(公告)日:2021-10-06
Disclosed by the invention is a heterocyclic compound, an intermediate, and a preparation method therefor and an application thereof. Provided by the invention are a heterocyclic compound as shown in formula I, and a stereoisomer, a geometric isomer, a tautomer, a nitrogen oxide, a hydrate, a solvate, a metabolite, an ester, a pharmaceutically acceptable salt or a prodrug thereof. The heterocyclic compound hasa high P2X3 antagonistic activity, and has good selectivity, low toxicity, good metabolic stability and little taste influence.
本发明公开了一种杂环化合物、一种中间体及其制备方法和应用。本发明提供了一种如式 I 所示的杂环化合物及其立体异构体、几何异构体、同分异构体、氧化氮、水合物、溶液、代谢物、酯、药学上可接受的盐或原药。该杂环化合物具有很高的 P2X3 拮抗活性,并且选择性好、毒性低、代谢稳定性好、味道影响小。
[EN] HETEROCYCLIC COMPOUND INTERMEDIATE, PREPARATION METHOD THEREFOR AND APPLICATION THEREOF<br/>[FR] INTERMÉDIAIRE DE COMPOSÉ HÉTÉROCYCLIQUE, SON PROCÉDÉ DE PRÉPARATION ET SON UTILISATION<br/>[ZH] 杂环类化合物、中间体、其制备方法及应用
[EN] NOVEL COMPOUNDS AS ANTAGONISTS OR INVERSE AGONISTS FOR OPIOID RECEPTORS<br/>[FR] NOUVEAUX COMPOSÉS COMME ANTAGONISTES OU AGONISTES INVERSES POUR LES RÉCEPTEURS D'OPIOÏDES
申请人:SMITHKLINE BEECHAM CORP
公开号:WO2008021851A2
公开(公告)日:2008-02-21
[EN] This invention relates to novel compounds which are antagonists or inverse agonists at one or more of the opioid receptors, to pharmaceutical compositions containing them, to processes for their preparation, and to their use in therapy. [FR] Cette invention concerne de nouveaux composés qui sont des antagonistes ou des agonistes inverses à un ou à plusieurs récepteurs d'opioïdes, des compositions pharmaceutiques contenant lesdits composés, des procédés permettant de les préparer, et leur utilisation en thérapie.