Identification of small molecule sphingomyelin synthase inhibitors
摘要:
Sphingomyelin synthase (SMS), which catalyzes ceramide as one of the substrates to produce sphingomyelin, is a critical factor in the sphingolipid biosynthesis pathway. Recent studies indicated that SMS could serve as a novel potential drug target for the treatment of various metabolic diseases such as insulin resistance and atherosclerosis. However, very few small-molecule inhibitors of SMS are known. In this study, we performed structure-based virtual screening in combination with chemical synthesis and bioassay and discovered a class of small-molecule SMS inhibitors. The most potent compound exhibited an IC50 value lower than 20 mu M in an in vitro enzymatic assay. To the best of our knowledge, this is the first time that small-molecule SMS inhibitors with potency close to the micromolar range are publicly revealed. The structure-activity relationship demonstrated by this class of compounds provides insights into the structural features that are essential for effective SMS inhibition. (C) 2013 Elsevier Masson SAS. All rights reserved.
Synthesis and bioactivity of a side chain bridged paclitaxel: A test of the T-Taxol conformation
作者:Mathis Hodge、Qiao-Hong Chen、Susan Bane、Shubhada Sharma、Maura Loew、Abhijit Banerjee、Ana A. Alcaraz、James P. Snyder、David G.I. Kingston
DOI:10.1016/j.bmcl.2009.03.063
日期:2009.5
bioactive tubulin-binding conformation of paclitaxel (Taxol™) is crucial to a full understanding of the bioactivity of this important anticancer drug, and potentially also to the design of simplified analogs. The bioactive conformation has been shown to be best approximated by the T-Taxol conformation. As a further test of this conclusion, the paclitaxel analog 4 was designed as a compound which has all the