55785-61-0Relevant articles and documents
XANTHONES FROM ROOTS OF THREE CALOPHYLLUM SPECIES
Ranjith, H.,Dharmaratne, W.,Sotheeswaran, Subramaniam,Balasubramaniam, Sinnathamby,Reisch, Johannes
, p. 1957 - 1960 (1986)
The root bark of Calophyllum thwaitesii has been shown to contain two new xanthones: 6,8-dihydroxy-2,2-dimethyl-7(3-methylbut-2-enyl)-2H,5H-pyrano-(3,2-a)xanthen-5-one (calothwaitesixanthone) and 1,3,7-trihydroxy-2,8-di(3-methylbut-2-enyl)xanthone (6-deoxy-γ-mangostin).Thwaitesixanthone has also been isolated from the root bark extracts of C. thwaitesii.The root bark extracts of C. calaba var. calaba and C. bracteatum contained calabaxanthone and calocalabaxanthone.Trapezifolixanthone has also been isolated from C. calaba var. calaba.