Planta Medica, Inhaltsverzeichnis Planta Med 1978; 33(4): 385-388DOI: 10.1055/s-0028-1097397 Research Articles © Georg Thieme Verlag Stuttgart · New YorkMallorepine, Cyano–γ–Pyridone from Mallotus repandusHiroshi Hikino, Mitsuru Tamada, Kun–Ying Yen Pharmaceutical Institute, Tohoku University, Sendai, Japan, and Taipei Medical College, Taipei, Taiwan. Artikel empfehlen Abstract als PDF herunterladen Artikel einzeln kaufen Abstract The methanol extract of a Formosan folklore drug, the aerial part of Mallotus répandus (Euphorbiaceae), has been fractionated monitored by the antiulcerogenic activity to give, together with bergenin as one of the active principles, a crystalline substance for which the name mallorepine is given. Mallorepine has been identified as 3–cyano–1–methyl–4–pyridone (I) but has been shown to be inactive in inhibiting the formation of the stress–induced gastric ulcers. Mallorepine may propably be an intermediate on the biosynthetic pathway from nicotinamide (II) to ricinine (III). Key Word Index Mallotus répandus - Mallorepine - Cyano–γ–pyridone PDF (364 kb)