A Cytotoxic β-Carboline from the Bryozoan Catenicella cribraria

A Cytotoxic β-Carboline from the Bryozoan Catenicella cribraria A Cytotoxic β-Carboline from the Bryozoan Catenicella cribraria New Cytotoxic β-Carboline Alkaloids from the Marine Bryozoan, Cribricellina cribraria 5-Bromo-8-methoxy-1-methyl-β-carboline, an Alkaloid from the New Zealand Marine Bryozoan <i>Pterocella vesiculosa</i> 5-Bromo-8-methoxy-1-methyl-β-carboline, an Alkaloid from the New Zealand Marine Bryozoan <i>Pterocella vesiculosa</i> 7-Bromo-1-ethyl-β-carboline, an Alkaloid from the New Zealand Marine Bryozoan Pterocella vesiculosa Orthoscuticellines A–E, β-Carboline Alkaloids from the Bryozoan <i>Orthoscuticella ventricosa</i> Collected in Australia Two new β-carboline alkaloids from aeschrion crenata New b-carboline alkaloid from marine sponge Hyrtios reticulatus A β-Carboline Alkaloid from the Papua New Guinea Marine Sponge <i>Hyrtios reticulatus</i>