Stepinonine, A new dimeric benzylisoquinoline - 2-phenyl-s-homotetrahydroisoquinoline alkaloid
作者:T. Ibuka、T. Konoshima、Y. Inubushi
DOI:10.1016/s0040-4039(01)94219-4
日期:1972.1
Structure of stepinonine, a new dimeric benzylisoquinoline-2-phenyl-s-homotetrahydroisoquinoline alkaloid.
作者:TOSHIRO IBUKA、TAKAO KONOSHIMA、YASUO INUBUSHI
DOI:10.1248/cpb.23.114
日期:——
Structure of stepinonine (1a), isolated from Stephania japonica MIERS grown in Formosa, was established through the reductive fission (Chart 2) of N, O-dimethyltetrahydrostepinonine (4) with sodium in liquid ammonia, oxidation of O-ethyl-N-methyltetrahydrostepinonine (16) with KMnO4 (Chart 5), and the reductive fission of the deuterated product (18) derived from stepinonine (Chart 6). Syntheses of the 3-benzazepine derivatives, (15 a, b, c) and mass spectrometric fragmentation of these compounds were also presented.