A novel type of bis-quinolizidine alkaloid from the sponge

A novel type of bis-quinolizidine alkaloid from the sponge Petrosin‐A and ‐B, Two New Bis‐Quinolizidine Alkaloids from the Sponge Petrosia Seriata⁽¹⁾ Petrosin‐A and ‐B, Two New Bis‐Quinolizidine Alkaloids from the Sponge <i>Petrosia Seriata</i>⁽¹⁾ Uncommon Bis‐quinolizidine Alkaloids from the Hainan Sponge Neopetrosia chaliniformis A New Quinolizidine Alkaloid from the Papua New Guinean Sponge Xestospongia exigua Aragupetrosine a, a new vasodilative macrocyclic quinolizidine alkaloid from an Okinawan marine sponge sp A New Quinolizidine Alkaloid from the Papua New Guinean Sponge <i>Xestospongia exigua</i> 9′-Epi-3β,3′β-dimethylxestospongin C, a New Macrocyclic Diamine Alkaloid from the Hainan SpongeNeopetrosia exigua 9′<i>-Epi</i>-3<i>β</i>,3′<i>β</i>-dimethylxestospongin C, a New Macrocyclic Diamine Alkaloid from the Hainan Sponge<i>Neopetrosia exigua</i> Anti-HIV Active Petrosins from the Marine Sponge Petrosia similis1)