p. 6621 - 6624
(2007/10/02)5b,13-dimethyl-(5br,12bc)-5b,12b,13,14-hexahydro-7H-[1,3]dioxolo[4,5-i][1,3]dioxolo[4',5':4,5]benzo[1,2-c]phenanthridin-6-one
(11SR,13RS,14RS)-corynoline
acetic anhydride
(+/-)-11-epicorynoline
(5bS)-5b,13-dimethyl-(5br,12bt)-5b,6,7,12b,13,14-hexahydro-[1,3]dioxolo[4,5-i][1,3]dioxolo[4',5':4,5]benzo[1,2-c]phenanthridin-6t-ol