title: New triterpenoids from the stem barks of Drypetes tessmanniana.
abstract: The MeOH extract of the stem barks of Drypetes tessmanniana (Euphorbiaceae) afforded two new triterpene derivatives characterized as 3beta-O-(E)-3,5-dihydroxycinnamoyl-11-oxo-olean-12-ene and 3beta,6alpha-dihydroxylup-20(29)-ene together with seven known compounds. Their structures were established on the basis of spectral analysis.
authors.affiliation: Department of Organic Chemistry, Faculty of Science, University of Yaounde-1, Yaounde, Cameroon.
authors.forename: Marlise Diane Jiofack
authors.initials: MD
authors.lastname: Dongfack
authors.forename: Hanh Trinh
authors.initials: HT
authors.lastname: Van-Dufat
authors.forename: Marie-Christine
authors.initials: MC
authors.lastname: Lallemand
authors.forename: Jean-Duplex
authors.initials: JD
authors.lastname: Wansi
authors.forename: Elisabeth
authors.initials: E
authors.lastname: Seguin
authors.forename: François
authors.initials: F
authors.lastname: Tillequin
authors.forename: Jean
authors.initials: J
authors.lastname: Wandji