作者:Teiji Kishimoto、Shojiro Uyeo
DOI:10.1039/j39710001644
日期:——
7-dihydroxy-N-nor-ketone (VI) in several steps; this product (II) was identical with the alkaloid. Another minor alkaloid from the same plant, fumariline, was also prepared from compound (VI). The imino-group was protected by forming an imidazolidinone ring with methyl isocyanate. Methylenation of the dihydroxy-system followed by treatment with lithium aluminium hydride to remove the imidazolidinone ring gave 1,2,3
建立之前式(II)为fumaritine的,从一种生物碱球果紫菫L.,我们制备1,2,3,4-四氢-7-甲氧基-2-甲基-6',7'- methylenedioxyisoquinoline -1-来自已知的N-正酮(IV)的螺-2'-茚满-1',6-二醇(I )。由于产物(I)与富马汀并不相同,我们从相应的6,7-二羟基-N合成了7-羟基-6-甲氧基异构体(II)-去甲酮(VI)分几个步骤;该产物(II)与生物碱相同。还从化合物(VI)制备了来自同一植物的另一种次要生物碱,富马啉。通过与异氰酸甲酯形成咪唑啉酮环来保护亚氨基。二羟基系统的亚甲基化,然后用氢化铝锂处理以除去咪唑啉酮环,得到1,2,3,4-四氢-6,7:6',7'-双亚甲基二氧基异喹啉-1-螺-2'-茚满- 1′-一(X),其经N-甲基化得到富马啉(XI)。