Ophiorrhizine, a new quaternary indole alkaloid related to cinchonamine, from Ophiorrhiza major Ridl.

Ophiorrhizine, a new quaternary indole alkaloid related to cinchonamine, from Ophiorrhiza major Ridl. Quinolizidines. XXXIII. A Chiral Synthesis of (-)-Ophiorrhizine, a Pentacyclic Quaternary Indole Alkaloid from Ophiorrhiza major RIDL. Isomalindine-16-carboxylate, a Zwitterionic Alkaloid from Ophiorrhiza cf. communis Structure of ophiorines A and B; novel type gluco indole alkaloids isolated from ophiorrhiza spp. The Alkaloids of Ophiorrhiza cf. ferruginea Indole Alkaloids from Two Species of Ophiorrhiza Bracteatine, a Quaternary Glucoalkaloid from Ophiorrhiza bracteata Cincholenines A and B, two unprecedented quinoline alkaloids from Cinchona ledgeriana Two Cationic Indole Alkaloids from Ophiorrhiza japonica and Their Xanthine Oxidase Inhibitory Activity β-Carboline-type indole alkaloid glycosides from Ophiorrhiza trichocarpon