Structure de L'Acide Zanhique et de L'Acide Zanhique-γ-Lactone, Triterpenoïdes Nouveaux Isoles de Zanha Golugensis et de Ganophyllum Giganteum

Medicagenic acid and two novel triterpenoids, zanhic acid and zanhic acid-γ-lactone, have been isolated simultaneously from Zanha golungensis and from Gano-phyllum giganteum. The structures have been elucidated by spectroscopic means. Zanhic acid is: 2β, 3β, 16α-trihydroxyolean-12-ene, 23,28-dioic and zanhic acid-γ-lactone is: 2β, 3β, 16α, trihydroxy-oleanane 28:13-olide-23-oic.