Studies on the syntheses of heterocyclic compounds. Part 682. Six new isoquinoline alkaloids from Corydalis ochotensis var. raddeana

Abstract

Separation of the alkaloids from Corydalis ochotensis yielded six new isoquinoline alkaloids, raddeanamine (1), raddeanine (2), raddeanidine (3), raddeanone (4), aobamine (5), and aobamidine (6), along with the known alkaloids protopine (7), adlumidine(8), bicuculline (9), dihydrosanguinarine (10), ochotensimine (11), ochotensine (12), cheilanthifoline (13), scoulerine (14), sinoacutine (15), and pallidine (16).