Six hew acetylenic compounds (1-6) with cytotoxic activities against human
solid tumor cell lines (SK-OV-3, SK-MEL-2, XF498, and HCT15) have been isol
ated from the stony coral Montipora sp. Structures of the compounds 1-6 wer
e,elucidated based oa analysis of the NMR and MS data.