Studies of Australian Soft Corals. XXXIX. New Sesquiterpene Metabolites From Several Xenia Species (Xeniidae, Octocorallia, Anthozoa)

Abstract

The structures and absolute stereochemistry of three new metabolites isolated from Xenia species of soft corals have been determined by spectroscopic study and chemical correlation with known natural products. The new metabolites are: (1S,2R,4R,4aS,5Z,8aR)-1,2-epoxy-4-isopropyl-1,6-dimethyl-1,2,3,4,4a,7,8,8a-octahydronaphthalene (4), (1E,4R,4aR,5S,6R,8aR)-5,6-epoxy-4-isopropyl-6-methyl- 3,4,4a,5,6,7,8,8a-octahydronaphthalene-1-methanol acetate (5) and (1E,5Z,4R,4aR,8aR)-4-isopropyl-6-methyl-3,4,4a,7,8,8a- hexahydronaphthalene-1-methanol (6).