| Synonyms: |
2,3-dihydro-1,5,6,7-tetrahydroxy-3-(1-methyethenyl)-8-prenylfuro[2,3-b]xanthone,
4,7,8,9-tetrahydroxy-6-(3-methylbut-2-en-1-yl)-2-(prop-1-en-2-yl)-2,3-dihydro-5H-furo[3,2-b]xanthen-5-one
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| Definition: |
An organic heterotetracyclic compound that is 2,3-dihydro-5H-furo[3,2-b]xanthen-5-one substituted by hydroxy groups at positions 4, 7, 8 and 9, an isoprenyl group at position 6 and a prop-1-en-2-yl group at position 2. It is isolated from Cratoxylum Sumatranum and exhibits cytotoxicity towards the KB (human oral epidermoid) cancer cell line. |