Chemoprofiling of the aerial parts of the unexplored wild nutmeg species M. beddomei subsp. Spherocarpa W.J. de Wilde led to the isolation of two new flavonoids, including an isoflavone 5,7-dihydroxy-3-(5'-hydroxybenzo[d](7',9')-dioxol-1'-yl)-4H-chromen-4-one (1) and a β-hydroxydihydrochalcone; (3(S)-hydroxy-3-phenyl-1-(2',4',6'-trihydroxyphenyl)propan-1-one (2) along with eleven known compounds (3-13) for the first time. The chemical structures of the isolates were elucidated by various spectroscopic analyses (1D and 2D NMR, HR-ESI-MS and IR). Chemotaxonomic significance of the isolates was discussed in detail. In addition the selected compounds were assessed for their in vitro cytotoxicity against human adenocarcinoma cell lines (MCF-7 and MDA-MB-231). Amongst malabaricones (3, 5-7) showed promising activity against both the cell lines whereas trimyristin (10) efficiently inhibited MCF-7 also partensein (8) and promalabaricone B (9) were found to be moderately toxic to MDA-MB-231 and MCF-7.
