(2S),(2''S)-8,8''-5',5''-tetrahydroxy-7,7''-3,3''-4,4''-hexamethoxy-5,5''-biflavan A biflavonoid obtained by coupling of two units of 8,3'-dihydroxy-7,4',5'-trimethoxyflavan resulting in a bond between C-5 positions of the two chromene rings. Isolated from Muntingia calabura, it exhibits antineoplastic activity. |
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