title: Dihydrolindbladiones, three new naphthoquinone pigments from a myxomycete Lindbladia tubulina.
abstract: Three new naphthoquinone pigments, 6,7-dimethoxydihydrolindbladione (1), dihydrolindbladione (2), and 6-methoxydihydrolindbladione (3), have been isolated from a myxomycete Lindbladia tubulina, and their structures were elucidated by spectral data. Compound 3 appreciably exhibited a reversal effect of multidrug resistance. Lindbladione (4), the major pigment of this myxomycete, was also isolated from Cribraria intricata.
authors.affiliation: Graduate School of Pharmaceutical Sciences, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan.
authors.forename: Yuka
authors.initials: Y
authors.lastname: Misono
authors.forename: Yae
authors.initials: Y
authors.lastname: Ishikawa
authors.forename: Yukinori
authors.initials: Y
authors.lastname: Yamamoto
authors.forename: Masahiko
authors.initials: M
authors.lastname: Hayashi
authors.forename: Kanki
authors.initials: K
authors.lastname: Komiyama
authors.forename: Masami
authors.initials: M
authors.lastname: Ishibashi
mesh_terms: D018432:Drug Resistance, Multiple / Q000187:drug effects; D007564:Japan; D015394:Molecular Structure; D009235:Myxomycetes / Q000737:chemistry*; D009285:Naphthoquinones / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D010860:Pigments, Biological / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D013056:Spectrophotometry, Ultraviolet
chemical_list: D009285:Naphthoquinones; D010860:Pigments, Biological