8-Hydroxymanzamine A, a β-Carboline Alkaloid from a Sponge, Pachypellina sp.

8-Hydroxymanzamine A, a β-Carboline Alkaloid from a Sponge, Pachypellina sp. 6-Hydroxymanzamine A and 3,4-Dihydromanzamine A, New Alkaloids from the Okinawan Marine Sponge Amphimedon sp. 6-Hydroxymanzamine A and 3,4-Dihydromanzamine A, New Alkaloids from the Okinawan Marine Sponge Amphimedon sp. Neuritogenic Activity-Guided Isolation of a Free Base Form Manzamine A from a Marine Sponge, Acanthostrongylophora aff. ingens (Thiele, 1899) 1,2,3,4-tetrahydro-8-hydroxymanzamines, alkaloids from two different haplosclerid sponges Zamamidines A and B, New Manzamine Alkaloids from the Sponge Amphimedon Species New Manzamine Alkaloids with Potent Activity against Infectious Diseases A new β-carboline alkaloid isolated from the marine sponge Hyrtios erecta Four new β-carboline alkaloids isolated from two Okinawan marine sponges of Xestospongia sp. and Haliclona sp.) A New Manzamine Congener from Marine Sponge Amphimedon sp.