title: Four novel gelsenicine-related oxindole alkaloids from the leaves of Gelsemium elegans benth.
abstract: [reaction: see text] New types of four gelsenicine-related oxindole alkaloids were isolated from the leaves of Gelsemium elegans Benth. Gelsedilam (1) and 14-acetoxygelsedilam (2) are the first examples of 18,19-nor-type monoterpenoid indole alkaloids. Gelsefuranidine (3) and gelseiridone (4) have, respectively, an additional furan residue or an iridoid unit on the gelsenicine-related monoterpenoid indole alkaloid.
authors.affiliation: Graduate School of Pharmaceutical Sciences, Chiba University, Inage-ku, Japan.
authors.forename: Noriyuki
authors.initials: N
authors.lastname: Kogure
authors.forename: Naoko
authors.initials: N
authors.lastname: Ishii
authors.forename: Mariko
authors.initials: M
authors.lastname: Kitajima
authors.forename: Sumphan
authors.initials: S
authors.lastname: Wongseripipatana
authors.forename: Hiromitsu
authors.initials: H
authors.lastname: Takayama
mesh_terms: D031450:Gelsemium / Q000737:chemistry*; D015394:Molecular Structure; D018515:Plant Leaves / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D046948:Secologanin Tryptamine Alkaloids / Q000737:chemistry* / Q000302:isolation & purification*; D013785:Thailand
chemical_list: D046948:Secologanin Tryptamine Alkaloids