Stereoselective Total Synthesis of (3<i>S</i>,5<i>S</i>)-1,7-Bis(4-hydroxyphenyl)heptane-3,5-diol, (3<i>S</i>,5<i>S</i>)-Alpinikatin, and Its Diastereoisomers
作者:Kunuru Venkatesham、Sudina Purushotham Reddy、Baggu Chinnababu、Katragadda Suresh Babu
DOI:10.1002/hlca.201500073
日期:2015.9
Stereoselective synthesis of the diarylheptanoids, (3S,5S)‐1,7‐bis(4‐hydroxyphenyl)heptane‐3,5‐diol (1), (3S,5S)‐alpinikatin (3), and their diastereoisomers (2 and 4, resp.), was achieved from readily available 4‐hydroxybenzaldehyde. The synthetic sequences involve Browns's allylation and Et2Zn mediated diastereoselective alkynylation reaction as key steps.
立体选择性合成二芳基庚烷,(3 S,5 S)-1,7-双(4-羟基苯基)庚烷-3,5-二醇(1),(3 S,5 S)-高山吡啶(3)及其它们的立体选择性合成非对映异构体(分别为2和4)是从现成的4-羟基苯甲醛制得的。合成序列涉及布朗斯的烯丙基化和Et 2 Zn介导的非对映选择性炔基化反应为关键步骤。