Novel synthesis of the indolizidine alkaloid skeleton with appropriate functionality and stereochemistry for use as a ‘chiral scaffold’
作者:Elizabeth Farrant、John Mann
DOI:10.1039/a701193h
日期:——
A stereocontrolled synthesis of the indolizidine alkaloid
skeleton has been achieved via an intramolecular,
photoinduced reaction of
(5S)-5-triisopropylsilyloxymethyl-3-2â²
-[(3â³S)-3â³
-methoxypyrrolidinyl]ethyl}furan-2-(5H)-one,
which can be obtained in a highly convergent fashion from
(5S)-5-triisopropylsilyloxymethyltetrahydrofuran-2-one
and (3S)-3-methoxypyrrolidine.
通过(5S)-5-三异丙基硅氧甲基-3-2²-[(3S)-3-甲氧基吡咯烷基]乙基}呋喃-2-(5H)-酮的分子内光诱导反应,实现了吲哚生物碱类分子骨架的立体控制合成,该反应可通过高度聚合的方式从(5S)-5-三异丙基硅氧甲基四氢呋喃-2-酮和(3S)-3-甲氧基吡咯烷获得。