title: Four mono-tetrahydrofuran ring acetogenins, montanacins B-E, from Annona montana.
abstract: Four novel mono-tetrahydrofuran (THF) acetogenins, montanacins B-E (1-4), were isolated from the ethanolic extract of the leaves of Annona montana. The structures of 1-4 were established by spectroscopic methods and their absolute stereochemistries were determined by the advanced Mosher ester method. Montancins D (3) and E (4) bear a non-adjacent tetrahydropyran (THP) ring along with a THF ring and are the most unusual type of acetogenins discovered so far.
authors.affiliation: Shanghai Institute of Materia Medica, Chinese Academy of Sciences.
authors.forename: L Q
authors.initials: LQ
authors.lastname: Wang
authors.forename: N
authors.initials: N
authors.lastname: Nakamura
authors.forename: M R
authors.initials: MR
authors.lastname: Meselhy
authors.forename: M
authors.initials: M
authors.lastname: Hattori
authors.forename: W M
authors.initials: WM
authors.lastname: Zhao
authors.forename: K F
authors.initials: KF
authors.lastname: Cheng
authors.forename: R Z
authors.initials: RZ
authors.lastname: Yang
authors.forename: G W
authors.initials: GW
authors.lastname: Qin
mesh_terms: D005663:Furans / Q000737:chemistry / Q000302:isolation & purification*; D007783:Lactones / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry / Q000379:methods; D010944:Plants / Q000737:chemistry*
chemical_list: D005663:Furans; D007783:Lactones; C112079:isomurisolenin