Novel Platensimycin Derivatives, Their Intermediates, and Process for Preparing the Same, and New Process for Preparing Platensimycin
申请人:Lee Eun
公开号:US20110028741A1
公开(公告)日:2011-02-03
The present invention relates to novel platensimycin derivatives, their intermediates and preparing methods of the same. Platensimycin is known as an effective antibiotic material having a broad antimicrobial spectrum and its derivatives are also expected to be effective antibiotic candidates. The present invention also relates to a novel preparing method of platensimycin. The intermediates used for the production of platensimycin and its derivatives of the present invention are tricyclo ketone derivatives and tetracyclo derivatives. Tetracyclo derivatives are prepared from tricyclo ketone derivatives prepared by carbonyl ylide [3+2] cycloaddition of dia-zoketone derivative.
[EN] NOVEL PLATENSIMYCIN DERIVATIVES, THEIR INTERMEDIATES, AND PROCESS FOR PREPARARING THE SAME, AND NEW PROCESS FOR PREPARING PLATENSIMYCIN<br/>[FR] NOUVEAUX DÉRIVÉS DE PLATENSIMYCINE, LEURS INTERMÉDIAIRES ET LEURS PROCÉDÉS DE PRÉPARATION, ET NOUVEAU PROCÉDÉ POUR PRÉPARER LA PLATENSIMYCINE
申请人:SNU R&DB FOUNDATION
公开号:WO2009125938A3
公开(公告)日:2009-12-17
7-Phenylplatensimycin and 11-methyl-7-phenylplatensimycin: More potent analogs of platensimycin
作者:Ki Po Jang、Chan Hyuk Kim、Seong Wook Na、Dong Seok Jang、Hiyoung Kim、Heonjoong Kang、Eun Lee
DOI:10.1016/j.bmcl.2010.02.037
日期:2010.4
Carbonyl ylide cycloaddition strategy was employed in the synthesis of platensimycin analogs. 7-Phenylplatensimycin and 11-methyl-7-phenylplatensimycin are more potent analogs of platensimycin. (C) 2010 Elsevier Ltd. All rights reserved.
In vivo instability of platensimycin and platencin: Synthesis and biological evaluation of urea- and carbamate-platensimycin
作者:Liao-Bin Dong、Jeffrey D. Rudolf、Li Lin、Claudia Ruiz、Michael D. Cameron、Ben Shen
DOI:10.1016/j.bmc.2017.02.028
日期:2017.3
Platensimycin (PTM) and platencin (PTN), two natural products and promising drug leads that target bacterial and mammalian fatty acid synthases, are known to have unfavorable pharmacokinetic properties. It is not clear, however, what the metabolic fates of PTM and PTN are and no efforts have been reported to address this key roadblock in the development of these compounds as viable drug options. Here we describe the pharmacokinetics of PTM and PTN, and reveal rapid renal clearance as the primary metabolic liability with three additional sites of chemical liability: (i) amide hydrolysis, (ii) glucuronidation, and (iii) oxidation. We determined that hydrolysis is a viable clearance mechanism in vivo and synthesized two PTM analogues to address in vivo hydrolysis. Urea-and carbamate-PTM analogues showed no detectable hydrolysis in vivo, at the expense of antibacterial activity, with no further improvement in systemic exposure. The antibacterial sulfur-containing analogues PTM D1 and PTM ML14 showed significant decreases in renal clearance. These studies set the stage for continued generation of PTM and PTN analogues in an effort to improve their pharmacokinetics while retaining or improving their biological activities. (C) 2017 Elsevier Ltd. All rights reserved.