Syntheses of (±)-tetrahydropalmatine and spirobenzylisoquinolines by thermolysis of benzocyclobutene derivatives
作者:Tetsuji Kametani、Hirotaka Yukawa、Yukio Suzuki、Toshio Honda
DOI:10.1039/p19850002151
日期:——
tetrahydroprotoberberine alkaloid, (±)-tetrahydropalmatine (1) was synthesized by heating the 1-benzocyclobutenyl-3,4-dihydroisoquinoline (16), followed by reduction of the dehydro compound (20) with sodium borohydride. Ochotensine type spirobenzylisoquinolines (18) and (19) were prepared by the electrocyclic reaction of the corresponding benzocyclobutene derivatives (14) and (15).
通过加热1-苯并环丁烯基-3,4-二氢异喹啉(16),然后用硼氢化钠还原脱氢化合物(20),合成四氢小pro碱生物碱(±)-四氢巴马汀(1)。通过相应的苯并环丁烯衍生物(14)和(15)的电环反应,制备了Ochotensine型螺苄基异喹啉(18)和(19)。