Total Synthesis of Lennoxamine and Chilenine via Ring-Expansion of Iso- indoloisoquinoline to Isoindolobenz- azepine
作者:Tatsuo Nagasaka、Yuji Koseki、Shinya Katsura、Shuichi Kusano、Harumi Sakata、Hiroto Sato、Yoshinori Monzene
DOI:10.3987/com-02-s50
日期:——
Convenient synthesis of the benzazepine alkaloids, lennoxamine (1) and chilenine (2), is described. The key steps are conversion of methylenelactam (5) to an N-tertiary acyliminium ion precursor (16) and a novel expansionof the six-membered ring of 4 to a benzazepine ring system (3b), which could be transformed into lennoxamine (1) and chilenine (2).
描述了苯并西平生物碱、lennoxamine (1) 和 chilenine (2) 的方便合成。关键步骤是将亚甲基内酰胺 (5) 转化为 N-叔酰基亚胺离子前体 (16),并将 4 的六元环扩展为苯并氮杂环系统 (3b),后者可以转化为列诺沙明 (1)和辣椒碱 (2)。