title: Cytotoxic metabolites from a fungal adherent of a marine alga.
abstract: Leptosins G, G1, G2 and H, belonging to a series of dimeric epipolythiodioxopiperazines, were isolated from the mycelium of a strain of Leptosphaeria sp. stuck on the marine alga Sargassum tortile. Their stereostructures were elucidated by chemical and spectral evidence.
authors.affiliation: Osaka University of Pharmaceutical Sciences, Japan.
authors.forename: C
authors.initials: C
authors.lastname: Takahashi
authors.forename: Y
authors.initials: Y
authors.lastname: Takai
authors.forename: Y
authors.initials: Y
authors.lastname: Kimura
authors.forename: A
authors.initials: A
authors.lastname: Numata
authors.forename: N
authors.initials: N
authors.lastname: Shigematsu
authors.forename: H
authors.initials: H
authors.lastname: Tanaka
mesh_terms: D000970:Antineoplastic Agents / Q000737:chemistry* / Q000302:isolation & purification; D056890:Eukaryota / Q000382:microbiology*; D007202:Indicators and Reagents; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D010879:Piperazines / Q000737:chemistry* / Q000302:isolation & purification; D012623:Seawater; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013053:Spectrophotometry; D013098:Xylariales / Q000737:chemistry*
chemical_list: D000970:Antineoplastic Agents; D007202:Indicators and Reagents; D010879:Piperazines