A new dibenzocyclooctadiene lactone lignan, 10-demethoxystegane (1), together with the known compounds steganone (2) and prestegane B (3), have been isolated from the organic extract of Steganotaenia araliacea(Apiaceae). Steganone (2) showed antiproliferative activity against an ovarian cancer cell
By means of activity-directed chromatographic fractionation using cultured astrocytoma (ASK) cells, six dibenzocyclo-octadiene lignans were isolated from Steganotaenia araliacea stem bark. In addition to the most abundant analogue, steganangin [1], two other known compounds, steganacin [3] and
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