SB12026 has set the stage for the facile semi-synthesis of a focused library of PTM analogues. In this study, gram-quantity of platensic acid (PTMA) was prepared by the sulfuric acid-catalyzed ethanolysis of PTM, followed by a mild hydrolysis in aqueous lithium hydroxide. Three PTMA esters were also obtained in near quantitative yields in a single step, suggesting a facile route to make PTMA aliphatic esters
Synthesis and biological evaluation of platensimycin analogs
作者:Hong C. Shen、Fa-Xiang Ding、Sheo B. Singh、Gopalakrishnan Parthasarathy、Stephen M. Soisson、Sookhee N. Ha、Xun Chen、Srinivas Kodali、Jun Wang、Karen Dorso、James R. Tata、Milton L. Hammond、Malcolm MacCoss、Steven L. Colletti
DOI:10.1016/j.bmcl.2009.02.006
日期:2009.3
Platensimycin (1) displays antibacterial activity due to its inhibition of the elongation condensing enzyme (FabF), a novel mode of action that could potentially lead to a breakthrough in developing a new generation of antibiotics. The medicinal chemistry efforts were focused on the modification of the enone moiety of platensimycin and several analogs showed significant activity against FabF and possess
Bioinspired Synthesis of Platensimycin from Natural <i>ent</i>-Kaurenoic Acids
作者:Álvaro Pérez、José F. Quílez del Moral、Alberto Galisteo、Juan M. Amaro、Alejandro F. Barrero
DOI:10.1021/acs.orglett.3c01470
日期:2023.7.28
The biomimetic formal synthesis of the antibiotic platensimycin for the treatment of infection by multidrug-resistant bacteria was accomplished starting from either ent-kaurenoic acid or grandiflorenic acid, each of which is a natural compound available in multigram scale from its natural source. Apart from the natural origin of the selected precursors, the keys of the described approach are the long-distance
用于治疗多重耐药细菌感染的抗生素平板霉素的仿生正式合成是从对映贝壳杉烯酸或大花烯酸开始完成的,这两种酸都是来自其天然来源的多克规模的天然化合物。除了所选前体的天然来源外,所述方法的关键是对映贝壳杉烯酸在 C11处的长距离官能化以及二萜框架 A 环降解的有效方案。