Qi, Shu-Hua Steroids and alkaloids from the South China Sea sponge Axinella sp. [electronic resource] - Journal of Asian natural products research Dec 2009 - 1040-4 p. digital Publication Type: Journal Article ISSN: 1477-2213 Standard No.: 10.1080/10286020903367136 doi Subjects--Topical Terms: AnimalsAxinella--chemistryCholestenones--chemistryIndole Alkaloids--chemistryMolecular StructureNuclear Magnetic Resonance, BiomolecularStereoisomerismSteroids--chemistry