Modulation of Wnt signaling through inhibition of secreted frizzled-related protein I (sFRP-1) with N-substituted piperidinyl diphenylsulfonyl sulfonamides: Part II
摘要:
Piperidinyl diphenylsulfonyl sulfonamides are a novel class of molecules that have inhibitory binding affinity for sFRP-1. As a secreted protein sFRP-1 inhibits the function of the secreted Wnt glycoprotein. Therefore, as inhibitors of sFRP-1 these small molecules facilitate the Wnt/beta-catenin canonical signaling pathway. Details of the structure-activity relationships and biological activity of this structural class of compounds will be discussed. (C) 2009 Elsevier Ltd. All rights reserved.
Identification of Potent and Selective Small-Molecule Inhibitors of Caspase-3 through the Use of Extended Tethering and Structure-Based Drug Design
摘要:
The design, synthesis, and in vitro activities of a series of potent and selective small-molecule inhibitors of caspase-3 are described. From extended tethering, a salicylic acid fragment was identified as having binding affinity for the S-4 pocket of caspase-3. X-ray crystallography and molecular modeling of the initial tethering hit resulted in the synthesis of 4, which reversibly inhibited caspase-3 with a K-i = 40 nM. Further optimization led to the identification of a series of potent and selective inhibitors with K-i values in the 20-50 nM range. One of the most potent compounds in this series, 66b, inhibited caspase-3 with a K-i = 20 nM and selectivity of 8-500-fold for caspase-3 vs a panel of seven caspases (1, 2, and 4-8). A high-resolution X-ray cocrystal structure of 4 and 66b supports the predicted binding modes of our compounds with caspase-3.
Identification of Potent and Selective Small-Molecule Inhibitors of Caspase-3 through the Use of Extended Tethering and Structure-Based Drug Design
作者:Ingrid C. Choong、Willard Lew、Dennis Lee、Phuongly Pham、Matthew T. Burdett、Joni W. Lam、Christian Wiesmann、Tinh N. Luong、Bruce Fahr、Warren L. DeLano、Robert S. McDowell、Darin A. Allen、Daniel A. Erlanson、Eric M. Gordon、Tom O'Brien
DOI:10.1021/jm020230j
日期:2002.11.1
The design, synthesis, and in vitro activities of a series of potent and selective small-molecule inhibitors of caspase-3 are described. From extended tethering, a salicylic acid fragment was identified as having binding affinity for the S-4 pocket of caspase-3. X-ray crystallography and molecular modeling of the initial tethering hit resulted in the synthesis of 4, which reversibly inhibited caspase-3 with a K-i = 40 nM. Further optimization led to the identification of a series of potent and selective inhibitors with K-i values in the 20-50 nM range. One of the most potent compounds in this series, 66b, inhibited caspase-3 with a K-i = 20 nM and selectivity of 8-500-fold for caspase-3 vs a panel of seven caspases (1, 2, and 4-8). A high-resolution X-ray cocrystal structure of 4 and 66b supports the predicted binding modes of our compounds with caspase-3.
Modulation of Wnt signaling through inhibition of secreted frizzled-related protein I (sFRP-1) with N-substituted piperidinyl diphenylsulfonyl sulfonamides: Part II
作者:William J. Moore、Jeffrey C. Kern、Ramesh Bhat、Peter V.N. Bodine、Shoichi Fukyama、Girija Krishnamurthy、Ronald L. Magolda、Keith Pitts、Barb Stauffer、Eugene J. Trybulski
DOI:10.1016/j.bmc.2009.11.002
日期:2010.1
Piperidinyl diphenylsulfonyl sulfonamides are a novel class of molecules that have inhibitory binding affinity for sFRP-1. As a secreted protein sFRP-1 inhibits the function of the secreted Wnt glycoprotein. Therefore, as inhibitors of sFRP-1 these small molecules facilitate the Wnt/beta-catenin canonical signaling pathway. Details of the structure-activity relationships and biological activity of this structural class of compounds will be discussed. (C) 2009 Elsevier Ltd. All rights reserved.