Synthesis, Profiling, and Bioactive Conformation of<i>trans</i>‐Cyclopropyl Epothilones
作者:Christian N. Kuzniewski、Simon Glauser、Fabienne Z. Gaugaz、Raphael Schiess、Javier Rodríguez‐Salarichs、Stefan Vetterli、Oliver P. Horlacher、Jürg Gertsch、Mariano Redondo‐Horcajo、Angeles Canales、Jesús Jiménez‐Barbero、José Fernando Díaz、Karl‐Heinz Altmann
DOI:10.1002/hlca.201900078
日期:2019.5
C(13)‐trans‐cyclopropyl‐epothilones have been prepared, bearing benzothiazole, quinoline, thiazol‐5‐ylvinyl, or isoxazol‐3‐ylvinyl side chains. For analogs with fused aromatic side chains, macrocyclic ring‐closure was based on ring‐closing olefin metathesis (RCM) of a precursor incorporating the fully elaborated heavy atom framework of the target structure (including the side chain moiety), while side chain attachment
一系列新的3-deoxy-C(12),C(13)-trans已经制备了带有苯并噻唑,喹啉,噻唑-5-乙烯基乙烯基或异恶唑-3-乙烯基乙烯基侧链的环丙基-环氧噻酮。对于具有稠合芳族侧链的类似物,大环闭环是基于前体的闭环烯烃复分解(RCM),该前体结合了目标结构(包括侧链部分)的完全精心设计的重原子框架,而侧链连接用于仅在建立大内酯核心后才进行含噻唑和异恶唑的16-去甲基类似物的检测。提出了两种方法来将大环醛作为后者类似物的共同前体,后者涉及通过RCM或大环内酯化进行闭环。发现基于苯并噻唑和喹啉的类似物是高度有效的抗增殖剂。CA。12,13-反式-上环素的微管蛋白结合构型的扭转角为60°C(10)-C(11)。