title: Two novel ravenelones from the edible mushroom Pulveroboletus ravenelii.
abstract: Two novel butenolides, isoravenelone (1) and ravenelone (2), and a large amount of a known compound, vulpinic acid (3), were isolated from the methanolic extract of the Japanese fungus Pulveroboletus ravenelii (Boletales). These structures were elucidated by two dimensional (2D) NMR, MS, IR and UV spectra, and X-ray crystallographic analysis.
authors.affiliation: Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Japan.
authors.forename: Dang Ngoc
authors.initials: DN
authors.lastname: Quang
authors.forename: Toshihiro
authors.initials: T
authors.lastname: Hashimoto
authors.forename: Makiko
authors.initials: M
authors.lastname: Nukada
authors.forename: Isao
authors.initials: I
authors.lastname: Yamamoto
authors.forename: Masami
authors.initials: M
authors.lastname: Tanaka
authors.forename: Shigeru
authors.initials: S
authors.lastname: Takaoka
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Asakawa
mesh_terms: D015107:4-Butyrolactone / Q000031:analogs & derivatives; D000363:Agaricales / Q000737:chemistry*; D005663:Furans / Q000737:chemistry* / Q000302:isolation & purification*; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification; D018514:Plant Structures
chemical_list: D005663:Furans; D010936:Plant Extracts; C004511:butenolide; D015107:4-Butyrolactone