Diamino Benzo[b]thiophene Derivatives as a Novel Class of Active Site Directed Thrombin Inhibitors. 5. Potency, Efficacy, and Pharmacokinetic Properties of Modified C-3 Side Chain Derivatives
摘要:
A systematic investigation of the structure-activity relationships of the C-3 side chain of the screening hit la led to the identification of the potent thrombin inhibitors 23c, 28c, and 31c. Their activities (1240, 903, and 1271 x 10(6) L/mol, respectively) represent 2200- and 2900-fold increases in potency over the starting lead la. This activity enhancement was accomplished with an increase of thrombin selectivity. The in vitro anticoagulant profiles of derivatives 28c and 31c were determined, and they compare favorably with the clinical agent H-R-1-[4aS,-8aS]perhydroisoquinolyl-prolyl-arginyl aldehyde (D-Piq-Pro-Arg-H; 32). The more potent members of this series have been studied in an arterial/venous shunt (AV shunt) model of thrombosis and were found to be efficacious in reducing clot formation. However, their efficacy is currently limited by their rapid and extensive distribution following administration.
The invention relates to novel compounds of formula (I), and their pharmaceutically acceptable salts, as defined herein, processes and intermediates for their preparation, pharmaceutical formulations comprising the novel compounds of formula (I), and the use of the compounds of formula (I) as thrombin inhibitors.
Demethylation process for preparing benzo[b]thiophenes
申请人:ELI LILLY AND COMPANY
公开号:EP0875511A1
公开(公告)日:1998-11-04
The preparation of benzo[b]thiophenes by the acylation of alkoxy protected starting materials followed by demethylation using essentially odorless thiol compound (2-methyl-5-t-butyl benzenethiol) are provided herewith. Demethylation may be carried out in the same reaction vessel without isolation of the acylated, protected material.
anaplastic lymphoma kinase (ALK) inhibitors adopt a type I binding mode, but only limited typeII ALK structural studies are available. Herein, we present the structure of ALK in complex with N1-(3-4-[([5-(tert-butyl)-3-isoxazolyl]aminocarbonyl)amino]-3-methylphenyl-1H-5-pyrazolyl)-4-[(4-methylpiperazino)methyl]benzamide (5a), a novel ALK inhibitor adopting a typeII binding mode. It revealed binding
大多数变性间变性淋巴瘤激酶(ALK)抑制剂采用I型结合模式,但仅有有限的II型ALK结构研究可用。在这里,我们介绍了与N 1-(3-4-[([[(5-(叔丁基)-3-异恶唑基]氨基羰基)氨基] -3-甲基苯基-1 H -5-吡唑基)形成的ALK的结构。-4-[(4-甲基哌嗪子基)甲基]苯甲酰胺(5a),一种新型的ALK抑制剂,采用II型结合模式。揭示了5a的结合导致激活环,αC-螺旋和近膜结构域的构象变化和重新定位,它们都是ALK的自抑制机制和下游信号通路调控的重要结构域。结构-活性关系研究表明,对5a结构的修饰导致ALK效能显着不同,并改变了ALK的蛋白质结构。据我们所知,这是第一个直接观察小分子结构变化如何调节I型和II型结合模式之间的转换并诱导剧烈构象变化的结构生物学研究。
An improved process for preparing 3-(4-aminoethoxy-benzoyl)benzo beta -thiophenes
申请人:ELI LILLY AND COMPANY
公开号:EP0693488A1
公开(公告)日:1996-01-24
The invention provides a process for preparing 6-alkoxy-3-(4-alkoxyphenyl)benzo[B]thiophenes in good yield on a manufacturing scale without generating a thick, potentially yield-reducing, paste. The invention also provides methods for converting a-(-alkoxyphenylthio)-4-alkoxyacetophenones into 6-hydroxy-2-(4-hydroxyphenyl)-3-[4-(2-aminoethoxy)-benzoyl]benzo[B]thiophenes via acylation of a dialkoxy benzo[B]thiophene. Each of these preparations relies on an intramolecular cyclization of a dialkoxy acetophenone derivative to yield a benzo[B]thiophene without generating a thick paste that lowers overall yields on a manufacturing scale.
This invention also provides methods for treating or preventing conditions associated with an excess of bradykinins which methods comprise administration of one or more of the substituted indoles, benzofurans, or benzothiophenes described in this invention.