Alkaloids of Fumaria indica: Further Studies on Narceimine and Narlumidine.

The structures of the FUMARIA INDICA alkaloids narceimine and narlumidine, earlier proposed by us, have been substantiated by further chemical reactions and characterisation of chemical transformation products. Isolation and characterisation of two naturally occurring alkaloid salts, protopine nitrate and tetrahydrocoptisine hydrochloride, along with (+)-adlumidine, norsanguinarine and an uncharacterised alkaloid, C (20)H (17)NO (6) (M (+) 367), mp 250-251 degrees C, from the same plant are also reported.