Stereoselective Synthesis of Trans Isomers of a Volatile Compound Isolated from the Elm Bark Beetle “<i>Pteleobius vittatus</i>” via Stereospecific Cyclodehydration Route
作者:Hidenori Chikashita、Kiyoharu Hirao、Kazuyoshi Itoh
DOI:10.1246/bcsj.66.1738
日期:1993.6
The stereoselective asymmetric synthesis of two trans isomers of the title natural product, (3R,6R)- and (3S,6S)-tetrahydro-2,2,6-trimethyl-2H-pyran-3-ol, was achieved by starting with easily obtainable ethyl (S)-3-hydroxybutanoate, via the stereospecific asymmetric construction of substituted tetrahydropyran skeletons by the one-step cyclodehydration process of dithioacetal-functionalized chiral 1
标题天然产物 (3R,6R)- 和 (3S,6S)-四氢-2,2,6-三甲基-2H-吡喃-3-醇的两种反式异构体的立体选择性不对称合成是通过以下方式实现的在室温下,通过二硫缩醛官能化的手性 1,5-二醇与 PPh3 和偶氮二甲酸二乙酯在 THF 中的一步环脱水过程,通过取代四氢吡喃骨架的立体定向不对称构建,可轻松获得 (S)-3-羟基丁酸乙酯。