Niphatoxin C, a Cytotoxic Tripyridine Alkaloid from Callyspongia sp.

Niphatoxin C, a Cytotoxic Tripyridine Alkaloid from Callyspongia sp. Niphatoxin A and B; two new ichthyo- and cytotoxic tripyridine alkaloids from a marine sponge Niphatesines E–H, new pyridine alkaloids from the Okinawan marine sponge Niphates sp. Niphatesines E–H, new pyridine alkaloids from the Okinawan marine sponge Niphates sp. Two new alkaloids from marine spongeCallyspongiasp. Niphatesines A–D, new antineoplastic pyridine alkaloids from the okinawan marine sponge Niphates sp. Callyspongenols A−C, New Cytotoxic C₂₂-Polyacetylenic Alcohols from a Red Sea Sponge, <i>Callyspongia</i> Species Pyrinadine A, a novel pyridine alkaloid with an azoxy moiety from sponge Cribrochalina sp. Hachijodines A−G:  Seven New Cytotoxic 3-Alkylpyridine Alkaloids from Two Marine Sponges of the Genera <i>Xestospongia </i>and <i>Amphimedon</i> Hachijodines A−G:  Seven New Cytotoxic 3-Alkylpyridine Alkaloids from Two Marine Sponges of the Genera <i>Xestospongia </i>and <i>Amphimedon</i>