title: Ceriopsins F and G, diterpenoids from Ceriops decandra.
abstract: Chemical examination of the ethyl acetate solubles of the CH(3)OH:CH(2)Cl(2) (1:1) extract of the roots of Ceriops decandra collected from Kauvery estuary resulted in the isolation of two more diterpenoids, ceriopsins F and G (1-2) and five known compounds, ent-13-hydroxy-16-kauren-19-oic acid (steviol, 3), methyl ent-16beta,17-dihydroxy-9(11)-kauren-19-oate (4), ent-16beta,17-dihydroxy-9(11)-kauren-19-oic acid (5), ent-16-oxobeyeran-19-oic acid (isosteviol, 6), 8,15R-epoxypimaran-16-ol (7). The structures of the new diterpenoids were elucidated by a study of their physical and spectral data as methyl ent-13,17-epoxy-16-hydroxykauran-19-oate (1) and ent-16-oxobeyeran-19-al (2).
authors.affiliation: Department of Organic Chemistry, School of Chemistry, Andhra University, Visakhapatnam-530 003, India. anjaneyulu@yahoo.com
authors.forename: Ammanamanchi S R
authors.initials: AS
authors.lastname: Anjaneyulu
authors.forename: Vadali Lakshmana
authors.initials: VL
authors.lastname: Rao
mesh_terms: D002850:Chromatography, Gel / Q000379:methods; D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification*; D019684:Magnoliopsida / Q000737:chemistry*; D019906:Nuclear Magnetic Resonance, Biomolecular; D018517:Plant Roots / Q000737:chemistry
chemical_list: D004224:Diterpenes; C474267:ceriopsin F; C474266:ceriopsin G