Anti-proliferative activities of coumarins from the Thai medicinal plant Mammea siamensis (Miq.) T. Anders. against human digestive tract carcinoma cell lines.

Geranylated coumarins named mammeasins G-J (1-4) were isolated from the methanol extract of the flowers of Mammea siamensis (Miq.) T. Anders.

Geranylated Coumarins From Thai Medicinal Plant With Testosterone 5α-Reductase Inhibitory Activity.

Geranylated coumarin constituents, kayeassamin I () and mammeasins E () and F () were newly isolated from the methanol extract of the flowers of (Calophyllaceae) originating in Thailand, along with five known isolates, such as mammea E/BC (), deacetylmammea E/AA cyclo D (), deacetylmammea E/BB cyclo D (), mammea A/AA cyclo F (), and mammea A/AC cyclo F (). These compounds (-) were obtained as an inseparable mixture (. 1:1 ratio) of the 3″ and 3″ forms, respectively.