Ten new (1, 4-6, 9-14) and four known (2, 3, 7, 8) diacetylenes have been i
solated from a brine shrimp active fraction of the methanolic extract of th
e stony coral Montipora sp. The structures were determined by combined spec
troscopic methods. The compounds exhibited significant cytotoxicity against
a small panel of human solid tumor cell lines. Montiporyne A (15), a previ
ously reported congener, was also found to induce apoptosis in human colon
tumor cell.