title: Six new compounds from the heartwood of Diospyros maritima.
abstract: Six new compounds, diospyrolide (1), diospyrolidone (2), diethyl (2R)-malate (3), 3-(E)-coumaroylbetulin-28-yl ethyl nonanedioate (4), 3-(E)-coumaroylbetulin-28-yl ethyl succinate (5), and 3-(E)-coumaroylbetulin-28-yl ethyl (2R)-2-hydroxysuccinate (6), have been isolated from the heartwood of Diospyros maritima. Compounds 1 and 2 are novel trinorlupanes, and 4, 5 and 6 are lupane derivatives. Their structures were determined using spectral and chemical methods.
authors.affiliation: Department of Chemistry, National Taiwan University, Taipei, ROC. yhkuo@ccms.ntu.edu.tw
authors.forename: Y H
authors.initials: YH
authors.lastname: Kuo
authors.forename: C I
authors.initials: CI
authors.lastname: Chang
mesh_terms: D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D015394:Molecular Structure; D010946:Plants, Medicinal / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet