title: New diterpenic altrosides of the fungus Acremonium striatisporum isolated from a sea cucumber.
abstract: Two new diterpenic glycosides, virescenosides M (1) and N (2), have been isolated from a marine strain of Acremonium striatisporum KMM 4401 associated with the holothurian Eupentacta fraudatrix. Their structures were determined on the basis of MS and NMR data as beta-D-altropyranosido-19-7-oxo-isopimara-8,15-diene-2alp ha, 3beta-diol (1) and beta-D-altropyranosido-19-isopimara-7, 15-diene-2alpha,3beta,6beta-triol (2). Three other altrosides (3-5), identified as virescenosides A, B, and C from the terrestrial strain Acremonium luzulae, were also isolated. The cytotoxic activity of the virescenosides was examined.
authors.affiliation: Pacific Institute of Bioorganic Chemistry, Far East Branch of the Russian Academy of Sciences, Vladivostok 22, Russian Federation.
authors.forename: S S
authors.initials: SS
authors.lastname: Afiyatullov
authors.forename: T A
authors.initials: TA
authors.lastname: Kuznetsova
authors.forename: V V
authors.initials: VV
authors.lastname: Isakov
authors.forename: M V
authors.initials: MV
authors.lastname: Pivkin
authors.forename: N G
authors.initials: NG
authors.lastname: Prokof'eva
authors.forename: G B
authors.initials: GB
authors.lastname: Elyakov
mesh_terms: D000164:Acremonium / Q000737:chemistry*; D000818:Animals; D000970:Antineoplastic Agents / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D004354:Drug Screening Assays, Antitumor; D012616:Sea Cucumbers / Q000382:microbiology*; D016339:Spectrometry, Mass, Fast Atom Bombardment; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization; D013237:Stereoisomerism; D013329:Structure-Activity Relationship; D014407:Tumor Cells, Cultured / Q000187:drug effects
chemical_list: D000970:Antineoplastic Agents; D004224:Diterpenes