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      Three minor novel triterpenoids from the leaves of Diospyros kaki.

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      Chemical & pharmaceutical bulletin

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          Abstract

          Two novel 18, 19-secoursane triterpenoids, kakisaponin B (1) and kakisaponin C (2), an ursane type 28-nortriterpene, kakidiol (3) and one known triterpenoid rosamultin (4), were isolated from the leaves of Diospyros kaki. The structures of compounds 1 and 2 were determined as 28-O-beta-D-glucopyranosyl-3alpha,19,24-trihydoxy-18,19-secours-11,13(18)-dien-28-oic acid (1) and 28-O-beta-D-glucopyranosyl-2alpha,3alpha,19-trihydoxy-18,19-secours-11,13(18)-dien-28-oic acid (2) by chemical methods and spectra experiments. Kakidiol (3) was characterized as a C(29)-triterpene with an aromatic E-ring in structure. This is the first report of 18,19-secoursane triterpenoids and 28-nortriterpene from family Ebenaceae.

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          Author and article information

          Journal
          Chem. Pharm. Bull.
          Chemical & pharmaceutical bulletin
          0009-2363
          0009-2363
          May 2009
          : 57
          : 5
          Affiliations
          [1 ] College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, China. chenguang@mail.buct.edu.cn
          Article
          JST.JSTAGE/cpb/57.532
          19420791
          865013ac-593c-427f-95cd-864d8ce7325f
          History

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