title: Two new sesterterpenoids and a new 9,11-secosterol from Spongia matamata.
abstract: Two novel sesterterpenoids, 12 alpha-acetoxy-19 beta-hydroxyscalara-15,17- dien-20,19-olide (3) and 12 alpha,-16 beta-diacetoxyscalarolbutenolide (5), and a new 9,11-secosterol, 3 beta-hydroxy-5 alpha,6 alpha-epoxy-9-oxo-9,11-seco-5 alpha-cholest-7-en-11-al (6), were isolated from the marine sponge Spongia matamata from Palau together with the known compounds scalarin (1) and 12 alpha-acetoxy-16 beta-hydroxyscalarolbutenolide (4). The structures were determined by interpretation of spectroscopic data.
authors.affiliation: Scripps Institution of Oceanography, University of California at San Diego, La Jolla 92093-0212, USA.
authors.forename: Q
authors.initials: Q
authors.lastname: Lu
authors.forename: D J
authors.initials: DJ
authors.lastname: Faulkner
mesh_terms: D000818:Animals; D002778:Cholestanones / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D011161:Porifera / Q000737:chemistry*; D013729:Terpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: C104808:12,16-diacetoxyscalarobutenolide; C104807:12-acetoxy-19-hydroxyscalara-15,17-dien-20,19-olide; C104809:3-hydroxy-5,6-epoxy-9-oxo-9,10-seco-5-cholest-7-en-11-al; D002778:Cholestanones; D013729:Terpenes