New Cyclopropyl-Triterpenoids from the Aerial Roots of Ficus microcarpa

抄録

Four new cyclopropyl-triterpenes, 27-nor-3β-hydroxy-25-oxocycloartane (1), (22E)-25, 26, 27-trinor-3β-hydroxycycloart-22-en-24-al (2), 3β-acetoxy-15α-hydroxy-13, 27-cyclours-11-ene (3), 3β-acetoxy-12α-formyloxy-13, 27-cycloursan-11α-ol (4), together with (23E)-27-nor-3β-hydroxycycloart-23-en-25-one (5) were isolated from the aerial roots of Ficus microcarpa. Compounds 3 and 4 are rare 13, 27-cycloursane-type triterpenes. Their structures were elucidated by spectroscopic and chemical methods.