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 Petrosia Seriata⁽¹⁾ Petrosin‐A and ‐B, Two New Bis‐Quinolizidine Alkaloids from the Sponge <i>Petrosia Seriata</i>⁽¹⁾ A novel type of bis-quinolizidine alkaloid from the sponge Uncommon Bis‐quinolizidine Alkaloids from the Hainan Sponge Neopetrosia chaliniformis A New Quinolizidine Alkaloid from the Papua New Guinean Sponge Xestospongia exigua A New Quinolizidine Alkaloid from the Papua New Guinean Sponge <i>Xestospongia exigua</i> Neopetrosiamine A, biologically active bis-piperidine alkaloid from the Caribbean sea sponge Neopetrosia proxima Neopetrosiamine A, biologically active bis-piperidine alkaloid from the Caribbean sea sponge Neopetrosia proxima Njaoamines G and H, two new cytotoxic polycyclic alkaloids and a tetrahydroquinolone from the marine sponge Neopetrosia sp. 9′-Epi-3β,3′β-dimethylxestospongin C, a New Macrocyclic Diamine Alkaloid from the Hainan SpongeNeopetrosia exigua