Catalytic Enantioselective Synthesis of (<i>S</i>)-8-Hydroxy-3-[(<i>S</i>)-2′-hydroxypentyl]-6-methoxyisochroman-1-one, (<i>S</i>)-3-Hydroxy-3-[(<i>S</i>)-2′-hydroxypentyl]-6,8-dimethoxyisochroman-1-one, and Their Epimers
作者:Gullapalli Kumaraswamy、Kukkadapu Ankamma、Nimmakayala Raghu、Dasa RamBabu
DOI:10.1002/ejoc.201301708
日期:2014.4
The total synthesis of (S)-8-hydroxy-3-[(S)-2′-hydroxypentyl]-6-methoxyisochroman-1-one, (S)-3-hydroxy-3-[(S)-2′-hydroxypentyl]-6,8-dimethoxyisochroman-1-one, and their epimers has been successfully achieved. The key reactions include a catalytic enantioselective asymmetric epoxidation to introduce the chirality, and an Alder–Rickert reaction for the construction of the substituted phenyl ring.
(S)-8-羟基-3-[(S)-2'-羟基戊基]-6-甲氧基异色满-1-one、(S)-3-羟基-3-[(S)-2'的全合成-羟基戊基]-6,8-二甲氧基异色满-1-one,其差向异构体已成功实现。关键反应包括催化对映选择性不对称环氧化以引入手性,以及用于构建取代苯环的 Alder-Rickert 反应。