First Atroposelective Total Synthesis of Enantiomerically Pure Ancistrocladidine and Ancistrotectorine
作者:Gerhard Bringmann、Narasimhulu Manchala、Tobias Büttner、Barbara Hertlein-Amslinger、Raina Seupel
DOI:10.1002/chem.201600701
日期:2016.7.4
The first regio‐ and stereoselective total synthesis of the axially chiral 7,3′‐coupled naphthylisoquinoline alkaloids ancistrocladidine (1) and ancistrotectorine (2) has been described. Both possess a 7,3′‐coupled axis, which before now, was difficult to attain synthetically. Moreover, target 2 has a sensitive relative cis‐array of the two methyl groups at C1 and C3 in the tetrahydroisoquinoline part
已经描述了轴向手性7,3'-偶联的萘基异喹啉碱生物碱顺反克拉定(1)和抗旋转阿霉素(2)的第一个区域和立体选择性全合成。两者都具有一个7,3'耦合轴,在此之前,很难通过合成获得。此外,目标2具有敏感的相对顺式四氢异喹啉部分中C1和C3处两个甲基的阵列。所选策略的关键步骤是按照“内酯法”构建联芳基轴:以“反卤代”形式活化的两个半分子以酯桥为前缀,然后是分子内内酯辅助桥的偶联和对映选择性裂解递送了所需的联芳基支架。