Antimony-Templated Macrolactamization of Tetraamino Esters - Facile Synthesis of Macrocyclic Spermine Alkaloids, (+/-)-Buchnerine, (+/-)-Verbacine, (+/-)-Verbaskine, and (+/-)-Verbascenine

Ishihara K; Kuroki Y; Hanaki N; Ohara S; Yamamoto H

Journal of the American Chemical Society, Vol.118, No.6, 1569-1570, 1996

Ishihara K, Kuroki Y, Hanaki N, Ohara S, Yamamoto H

Keywords:PHENOL PENDANT;METAL-IONS;CYCLAM;COMPLEXATION;IMIDAZOLE;VERBASCUM;AMIDATION;LIGANDS;BEARING;DONOR