Total Synthesis of (−)-4,8,10-Tridesmethyl Telithromycin
摘要:
Novel sources of antibiotics are required to address the serious problem of antibiotic resistance. Telithromycin (2) is a third-generation macrolide antibiotic prepared from erythromycin (1) and used clinically since 2004. Herein we report the details of our efforts that ultimately led to the total synthesis of (-)-4,8,10-tridesmethyl telithromycin (3) wherein methyl groups have been replaced with hydrogens. The synthesis of desmethyl macrolides has emerged as a novel strategy for preparing bioactive antibiotics.
Highly stereoselective synthesis of methynolide, the aglycone of the 12-membered ring macrolide methymycin, from D-glucose
作者:Yuji Oikawa、Tatsuyoshi Tanaka、Osamu Yonemitsu
DOI:10.1016/s0040-4039(00)84871-6
日期:1986.1
A highly stereoselective and efficient synthesis of methynolide, the aglycone of 12-membered macrolide methymycin, was achieved from of C1–C8 and C9–C13 segments synthesized from D-glucose by employing some stereoselective reactions and benzyl-type protectinggroups.
Highly stereoselective total synthesis of methynolide, the aglycon of the 12-membered macrolide antibiotic methymycin. II. Kinetic acetalization and synthesis of the seco-acid.
A highly stereoselective synthesis of the seco-acid (3) of methynolide (1), the aglycon of the 12-membered macrolide methymycin was carried out, starting from D-glucose via the Wittig-Horner coupling of the two segments i (4) (C-9-C-13) and ii (5) (C-1-C-8), which were synthesized by the use of p-methoxybenzyl and p-methoxybenzylidene acetal protecting groups for hydroxy functions.
以 D-葡萄糖为起点,通过 i (4) (C-9-C-13) 和 ii (5) (C-1-C-8)两个区段的 Wittig-Horner 偶联,对甲氧基苄基和对甲氧基亚苄基乙缩醛保护基团的羟基官能团合成了甲炔诺酮 (1) 的仲酸 (3),这是 12 元大环内酯甲炔诺酮的缩合物,从而实现了甲炔诺酮 (1) 仲酸 (3) 的高度立体选择性合成。
14-MEMBERED KETOLIDES AND METHODS OF THEIR PREPARATION AND USE
申请人:President and Fellows of Harvard College
公开号:US20170305953A1
公开(公告)日:2017-10-26
Provided herein are methods of preparing new 14-membered ketolides via coupling of an eastern and western half moiety, followed by macro-cyclization, and optional functionalization. Intermediates in the synthesis of these ketolides including the eastern and western halves are also provided. Pharmaceutical compositions and methods of treating infectious diseases and inflammatory conditions using these ketolides are also provided.
Total Synthesis of (−)-4,8,10-Tridesmethyl Telithromycin
作者:Venkata Velvadapu、Tapas Paul、Bharat Wagh、Ian Glassford、Charles DeBrosse、Rodrigo B. Andrade
DOI:10.1021/jo201319b
日期:2011.9.16
Novel sources of antibiotics are required to address the serious problem of antibiotic resistance. Telithromycin (2) is a third-generation macrolide antibiotic prepared from erythromycin (1) and used clinically since 2004. Herein we report the details of our efforts that ultimately led to the total synthesis of (-)-4,8,10-tridesmethyl telithromycin (3) wherein methyl groups have been replaced with hydrogens. The synthesis of desmethyl macrolides has emerged as a novel strategy for preparing bioactive antibiotics.
Stuermer, Rainer, Liebigs Annalen der Chemie, 1991, # 4, p. 311 - 313