A Novel and Enantioselective Total Synthesis of (20S)-Camptothecin via a Sharpless Asymmetric Dihydroxylation Strategy
作者:Fen-Er Chen、Lei Zhao、Fang-Jun Xiong、Wen-Xue Chen
DOI:10.1055/s-0031-1289575
日期:2011.12
efficient asymmetric total synthesis of (20S)-camptothecin has been accomplished in an overall yield of 12% starting from the commercially available 2-methoxynicotinic acid. The key step in the sequence is the Sharpless asymmetric dihydroxylation of a 4-(but-1-en-2-yl)pyridine derivative to establish the stereocenter of (20S)-camptothecin. total synthesis - stereoselectivity - asymmetric catalysis
一种新颖的和(20高效不对称全合成小号) -喜树碱已在12%的从市售2-甲氧基烟酸开始的总产率而完成的。序列中的关键步骤是4-(but-1-en-2-yl)吡啶衍生物的Sharpless不对称二羟基化反应,以建立(20 S)-喜树碱的立体中心。 全合成-立体选择性-不对称催化-抗肿瘤药-Heck反应