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.
A Novel One-Step Diastereo- and Enantioselective Formation of <i>trans</i>-Azetidinones and Its Application to the Total Synthesis of Cholesterol Absorption Inhibitors
An efficient and practical asymmetric process was developed for the synthesis of azetidinone-based cholesterol absorption inhibitors. Key to this synthesis was the discovery of a novel one-step diastereo- and enantioselective formation of trans beta-lactams starting from commercially available 3(S)-hydroxy-gamma-lactone. Various trans beta-lactams can be prepared in good yields and with better than
Direct Cyanoalkylation of Imines Driven by a Photoactive Electron Donor–Acceptor Complex
作者:Wei Liu、Hao Hou、Haochuan Jing、Shiqing Huang、Wei Ou、Chenliang Su
DOI:10.1021/acs.orglett.4c01673
日期:2024.7.26
β-Amino nitriles are important molecular scaffolds. Cyanoalkylation of imines is the most straightforward method for the construction of these scaffolds. In this study, we report the novel cyanoalkylation of imines via radical coupling enabled by a photoactive electrondonor–acceptorcomplex. This strategy is characterized by mild conditions, broad reaction scopes, and high atom economy. The scalability
β-氨基腈是重要的分子支架。亚胺的氰烷基化是构建这些支架的最直接的方法。在这项研究中,我们报道了通过光敏电子供体-受体复合物实现的自由基偶联实现亚胺的新型氰烷基化。该策略具有条件温和、反应范围广、原子经济性高等特点。该策略的可扩展性和实用性通过 40 g 连续流动系统得到了证明,从中获得了多种重要的药物相关分子。