Quinoline alkaloids. Part XIV. Asymmetric synthesis by the peroxy-acid–olefin reaction. The absolute stereochemistry of balfourodine, isobalfourodine, and related compounds, and the biosynthesis of isomeric dihydrofuro- and dihydropyrano-derivatives
作者:Robert M. Bowman、James F. Collins、Michael F. Grundon
DOI:10.1039/p19730000626
日期:——
acid, and with (+) and (–)-norbornane-2-endo-peroxycarboxylic acid furnished optically active dihydrofuroquinoline alkaloids, balfourodine and O-methylbalfourodinium salt, and the dihydropyranoquinoline, isobalfourodine (2–10% optical induction). The absolute stereochemistry of the alkaloids was determined by ozonolysis to 3-hydroxy-4,4-dimethyl-γ-butyrolactone. The stereochemical results are discussed
3-(3-甲基丁-2-烯基)-2,4-二羟基喹啉衍生物与(+)-和(-)-过氧樟脑酸,(+)-和(-)-过氧羟基苯甲酸以及(+ )和(–)-降冰片烷-2-内过氧羧酸提供了光学活性的二氢呋喃喹啉生物碱,balfourodine和O- methylbalfourodinium盐,以及二氢吡喃喹啉,isobalfourodine(2-10%的光诱导)。通过对3-羟基-4,4-二甲基-γ-丁内酯进行臭氧分解来测定生物碱的绝对立体化学。讨论了与过氧酸-烯烃反应,巴尔福丁-异巴尔福丁重排以及含有羟基异丙基二氢呋喃和羟基二甲基二氢吡喃环的香豆素和喹啉的生物合成有关的立体化学结果。