New alkaloids from a marine zoanthid

Abstract

Five new alkaloids zoanthenol 7,3-hydroxynorzoanthamine 8, 30-hydroxynorzoanthamine 9,11-hydroxynorzoanthamine 10 and 11-hydroxyzoanthamine 11 have been isolated from a marine zoanthid. Their structures were determined through the interpretation of 2D-NMR spectral data. Their relative stereochemistries were proposed on the basis of ROESY data.