Chemical synthesis and biological evaluation of novel epothilone B and trans-12,13-cyclopropyl epothilone B analogues
作者:K.C Nicolaou、Andreas Ritzén、Kenji Namoto、Rubén M Buey、J.Fernando Dı́az、José M Andreu、Markus Wartmann、Karl-Heinz Altmann、Aurora O'Brate、Paraskevi Giannakakou
DOI:10.1016/s0040-4020(02)00655-5
日期:2002.8
In addition to the total synthesis of the thiomethyl thiazole side chain analogue of epothilone B (3), a series of related trans-12,13-cyclopropyl epothilone B analogues (6, 8, 10, 12–14) was accomplished. While the synthesis of the epothilone B analogue (3) proceeded through a Stille coupling of a vinyl iodide substrate containing the epothilone macrocycle with the appropriate side chain stannane
除了埃坡霉素B(的硫代甲基噻唑侧链类似物的总合成3),一系列相关的反式-12,13环丙基埃坡霉素B类似物(6,8,10,12 - 14)中的溶液来完成的。尽管埃坡霉素B类似物(合成3通过含有与适当的侧链锡烷埃博霉素大环乙烯基碘基板的Stille偶联进行),即环丙基类似物(的6,8,10,12 - 14)涉及一种收敛策略,在该策略中,野崎-喜山-喜树偶联作为在山口大内酯化和最终精制目标分子之前引入侧链的一种手段。将合成的类似物进行体外微管蛋白聚合,亲和力微管紫杉醇涉及生物评价®结合位点和细胞毒性测定法。结果确定了甲硫基噻唑侧链是埃博霉素的一种增强能力的部分,并进一步阐明了这一重要化学治疗剂类之间的构效关系。