Identification of Novel Coumestan Derivatives as Polyketide Synthase 13 Inhibitors against <i>Mycobacterium tuberculosis</i>
作者:Wei Zhang、Shichun Lun、Shu-Huan Wang、Xing-Wu Jiang、Fan Yang、Jie Tang、Abigail L. Manson、Ashlee M. Earl、Hendra Gunosewoyo、William R. Bishai、Li-Fang Yu
DOI:10.1021/acs.jmedchem.7b01319
日期:2018.2.8
Inhibition of the mycolic acid pathway has proven a viable strategy in antitubercular drug discovery. The AccA3/AccD4/FadD32/Pks13 complex of Mycobacterium tuberculosis constitutes an essential biosynthetic mechanism for mycolic acids. Small molecules targeting the thioesterase domain of Pks13 have been reported, including a benzofuran-based compound whose X-ray cocrystal structure has been very recently
霉菌酸途径的抑制已被证明是抗结核药物发现中的可行策略。结核分枝杆菌的AccA3 / AccD4 / FadD32 / Pks13复合体构成霉菌酸必不可少的生物合成机制。已经报道了靶向Pks13的硫酯酶结构域的小分子,包括基于苯并呋喃的化合物,其X射线共晶体结构最近已得到解决。它最初在血清抑制滴定(SIT)分析中不起作用,导致我们进一步探查其他与结构相关的苯并呋喃,以提高其效价和生物利用度。在此,我们报告了围绕该支架的初步结构-活性关系研究,强调了天然产物启发的环化策略,以形成在SIT中表现出活性的香豆素。耐coumestan突变体的全基因组深度测序中所确认的单核苷酸多态性pks13 该基因负责抵抗表型,证明该靶标可用于开发新型抗结核药物。