AbstractOne of the key challenges to overcome multidrug resistance (MDR) in cancer is the development of more effective and general strategies to discover bioactive scaffolds. Inspired by natural products, we describe a strategy to achieve this goal by modular biomimetic synthesis of scaffolds of (Z)-allylic-supported macrolides. Herein, an Rh(III)-catalyzed native carboxylic acid-directed and solvent-free C−H activation allylation with high stereoselectivity and chemoselectivity is achieved. The generated poly-substituted allylic alcohol as a multifunctional and biomimetic building block is crucial for the synthesis of (Z)-allylic-supported macrolides. Moreover, the unique allylic-supported macrolides significantly potentiate the sensitivity of tumor cells to cytotoxic agents such as vinorelbine and doxetaxel by reversing p170-glycoprotein-mediated MDR. Our findings will inspire the evolution of synthetic chemistry and open avenues for expedient and diversified synthesis of bioactive macrocyclic molecules.
《摘要》挑战之一是克服癌症中的多药耐药性(MDR),需要开发更有效和通用的策略来发现
生物活性支架。受自然产物启发,我们描述了一种通过模块化仿生合成支架的策略,以实现这一目标。在这里,通过Rh(III)催化的本地
羧酸导向和无溶剂的C−H活化烯丙基化,实现了高立体选择性和
化学选择性。生成的多取代
烯丙醇作为多功能和仿生建筑块对于合成(
Z)-烯丙基支持的大环内酯至关重要。此外,独特的烯丙基支持的大环内酯显著增强了肿瘤细胞对细胞毒性药物(如
长春新碱和
多西他赛)的敏感性,通过逆转p170-糖蛋白介导的MDR。我们的发现将激发合成
化学的发展,并为
生物活性大环分子的迅速和多样化合成开辟途径。