A New Pyranoxanthone from Calophyllum soulattri

Our interest on xanthones from the Calophyllum genus has led us toa detailed study on the chemistry of the stem bark of Calophyllum soulattri. This gave one new pyranoxanthone, soulattrin (1), together with three other xanthones, caloxanthone B (2), caloxanthone C (3), macluraxanthone (4), the triterpene friedelin (5) and the steroid stigmasterol (6). The identities of these compounds were established using analyses of 1D and 2D NMR data.

[1]  H. Dharmaratne,et al.  Xanthones from roots of Calophyllum thwaitesii and their bioactivity , 2009, Natural product research.

[2]  B. Bodo,et al.  Antimicrobial and cytotoxic agents from Calophyllum inophyllum. , 2004, Phytochemistry.

[3]  Y. Taufiq-Yap,et al.  Mucigerin, a new coumarin from Calophyllum mucigerum (Guttiferae) , 2004, Natural product research.

[4]  M. Itoigawa,et al.  Cancer chemopreventive agents, 4-phenylcoumarins from Calophyllum inophyllum. , 2001, Cancer letters.

[5]  M. Itoigawa,et al.  A new biflavonoid from Calophyllum panciflorum with antitumor-promoting activity. , 1999, Journal of natural products.

[6]  H. Dharmaratne,et al.  Antimicrobial activity of xanthones from Calophyllum species, against methicillin-resistant Staphylococcus aureus (MRSA). , 1999, Journal of ethnopharmacology.

[7]  Takuya Kumamoto,et al.  An approach to anti-HIV-1 active Calophyllum coumarin synthesis: An enantioselective construction of 2,3-dimethyl-4-chromanone ring by quinine-assisted intramolecular Michael-type addition , 1999 .

[8]  S. Sotheeswaran,et al.  Anti-HIV coumarins from Calophyllum seed oil. , 1998, Bioorganic & medicinal chemistry letters.

[9]  M. Iinuma,et al.  Two xanthones from root bark of Calophyllum inophyllum , 1995 .

[10]  S. Mohamed,et al.  Hypoglycaemic effect of Parkia speciosa seeds due to the synergistic action of β-sitosterol and stigmasterol , 1994 .

[11]  M. Iinuma,et al.  Two New Xanthones in the Underground Part of Calophyllum inophyllum. , 1994 .

[12]  P. Gayral,et al.  Molluscicidal constituents of Calophyllum from Madagascar: activity of some natural and synthetic neoflavonoids and khellactones. , 1992, Planta medica.

[13]  N. Kunesch,et al.  Neoflavonoids from the stem bark of calophyllum verticillatum , 1987 .

[14]  S. Sotheeswaran,et al.  Triterpenoids and coumarins from the leaves of calophyllum cordato-oblongum , 1985 .