The structure of chelirubine (1c), one of the fully aromatized O5-benzo [c] phenanthridine alkaloiks, was unequivocally established by total synthesis using photocyclization of the enamide (27). On this basis, the formulae (36), (37), and (38) were proposed for chelilutine, sanguirubine, and sanguilutine, respectively.
通过烯酰胺(27)的光环化全合成法,明确地确定了完全芳香化的 O5-
苯并[c]菲啶烷烃之一--chelirubine(1c)的结构。在此基础上,分别提出了螯合鲁汀、桑吉鲁滨和桑吉鲁汀的式 (36)、(37) 和 (38)。