title: Benzyl 3-dehydr-oxy-1,2,5-oxadiazolo[3',4':2,3]oleanolate.
abstract: The title compound, C(37)H(50)N(2)O(3), is a benzyl ester derivative of oleanolic acid, a penta-cyclic triterpene, with a five-membered oxadiazole ring fused to the ring A. The triterpene A and C rings adopt slightly distorted half-chair conformations, whereas the remaining three six-membered rings are in chair forms.
authors.affiliation: Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China.
authors.forename: Jun
authors.initials: J
authors.lastname: Hu
authors.forename: Xiaoyun
authors.initials: X
authors.lastname: Gong
authors.forename: Ruji
authors.initials: R
authors.lastname: Wang
authors.forename: Yong
authors.initials: Y
authors.lastname: Ju