title: Lignans and Triterpenes from the Bark of Durio carinatus and Durio oxleyanus.
abstract: Investigation of chemical constituents from the bark of Durio carinatus has led to the isolation of three lignans, boehmenan X (1), threo-carolignan X (2), and erythro-carolignan X (3), together with the three known lignans boehmenan, threo-carolignan E, and erythro-carolignan E. The bark of D. oxleyanus yielded two new lignan ethers, threo-carolignan Y (4) and erythro-carolignan Y (5), together with compounds 1, 3, and boehmenan. J-Based configurational analysis and NOE measurements were used to explore conformational issues for the lignan diastereomers, while CD measurements supported an 8'S configuration for the various lignans. The triterpenes 3β-O-cis-caffeoylbetulinic acid and 3β-O-trans-caffeoylbetulinic acid were also characterized from D. carinatus.
authors.affiliation: School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD 4072, Australia.
authors.lastname: Rudiyansyah
authors.forename: Lynette K
authors.initials: LK
authors.lastname: Lambert
authors.forename: Mary J
authors.initials: MJ
authors.lastname: Garson
mesh_terms: D017705:Lignans / Q000737:chemistry / Q000302:isolation & purification*; D019660:Malvaceae; D015394:Molecular Structure; D024301:Plant Bark / Q000737:chemistry; D014315:Triterpenes / Q000032:analysis
chemical_list: D017705:Lignans; D014315:Triterpenes; C000605856:boehmenan X; C000605859:erythro-carolignan X; C000605858:threo-carolignan X