A structural screening approach to ketoamide-based inhibitors of cathepsin K
摘要:
Several novel ketoamide-based inhibitors of cathepsin K have been identified. Starting from a modestly potent inhibitor, structural screening of P-2 elements led to 100-fold enhancements in inhibitory activity. Modifications to one of these leads resulted in an orally bioavailable cathepsin K inhibitor. (c) 2005 Elsevier Ltd. All rights reserved.
Transfer hydrogenation of ketones with [Ru4H3(CO)12]? as the precatalyst
作者:Sumit Bhaduri、Krishna Sharma、Doble Mukesh
DOI:10.1039/dt9930001191
日期:——
The cluster [N(PPh3)2] [Ru4H3(CO)12] 1a has been found to be an efficient precatalyst for the transfer hydrogenations of ketones and alpha,beta-unsaturated ketones. With substrates such as (5S)-carvone [2-methyl-5-(1-methylethenyl)cyclohex-2-en-1-one], (3R)-methylcyclopentanone and (3R)-methyl-cyclohexanone, moderate to high diastereoselectivities were observed for reduction of the conjugated olefinic and ketonic functionalities respectively. Aromatisation of carvone to 5-isopropyl-2-methylphenol and disproportionation of cyclohex-2-en-1-one to phenol and cyclohexanone have also been found to be catalysed by 1a. Studies with radical inhibitors and other evidence suggest a radical mechanism for the transfer-hydrogenation and aromatisation reactions. In the transfer hydrogenation of cyclohex-2-en-1-one, the rate of conversion of 1a into other soluble species can be modelled accurately if autocatalysis is assumed. The time-dependent concentration profiles of cyclohex-2-en-1-one, cyclohexanone and cyclohexanol are simulated well if autocatalytic formation of an active intermediate followed by consecutive reactions leading to the formation of products is assumed. Such a model is also consistent with the proposed radical mechanism.
Skita; Faust, Chemische Berichte, 1939, vol. 72, p. 1127,1136
作者:Skita、Faust
DOI:——
日期:——
Conformational Analysis. XII.<sup>1</sup> Acetylation Rates of Substituted Cyclohexanols. The Kinetic Method of Conformational Analysis
作者:Ernest L. Eliel、Francis J. Biros
DOI:10.1021/ja00966a028
日期:1966.7
A structural screening approach to ketoamide-based inhibitors of cathepsin K
作者:David G. Barrett、John G. Catalano、David N. Deaton、Stacey T. Long、Robert B. McFadyen、Aaron B. Miller、Larry R. Miller、Kevin J. Wells-Knecht、Lois L. Wright
DOI:10.1016/j.bmcl.2005.03.023
日期:2005.5
Several novel ketoamide-based inhibitors of cathepsin K have been identified. Starting from a modestly potent inhibitor, structural screening of P-2 elements led to 100-fold enhancements in inhibitory activity. Modifications to one of these leads resulted in an orally bioavailable cathepsin K inhibitor. (c) 2005 Elsevier Ltd. All rights reserved.