title: Biologically active constituents of Arnebia euchroma: structures of new monoterpenylbenzoquinones: arnebinone and arnebifuranone.
abstract: Two quinonic compounds, arnebinone and arnebifuranone, were isolated from the roots of Arnebia euchroma and their structures were elucidated on the basis of spectral evidence. Arnebionone is a monoterpenyl-benzoquinone in which the monoterpene moiety forms a fused ring to the benzoquinone. Arnebifuranone is another monoterpenylbenzoquinone with a furan ring containing side chain which is bonded to the benzoquinone at the head carbon of C10 moiety originating from the geranyl moiety of geranylhydroquinone.
authors.affiliation: Faculty of Pharmaceutical Sciences, University of Tokyo, Japan.
authors.forename: X S
authors.initials: XS
authors.lastname: Yao
authors.forename: Y
authors.initials: Y
authors.lastname: Ebizuka
authors.forename: H
authors.initials: H
authors.lastname: Noguchi
authors.forename: F
authors.initials: F
authors.lastname: Kiuchi
authors.forename: M
authors.initials: M
authors.lastname: Shibuya
authors.forename: Y
authors.initials: Y
authors.lastname: Iitaka
authors.forename: H
authors.initials: H
authors.lastname: Seto
authors.forename: U
authors.initials: U
authors.lastname: Sankawa
mesh_terms: D000818:Animals; D016227:Benzoquinones / Q000032:analysis* / Q000494:pharmacology; D003864:Depression, Chemical; D005663:Furans / Q000032:analysis* / Q000494:pharmacology; D066298:In Vitro Techniques; D007679:Kidney Medulla / Q000187:drug effects / Q000378:metabolism; D009285:Naphthoquinones / Q000032:analysis* / Q000494:pharmacology; D010936:Plant Extracts / Q000032:analysis; D010946:Plants, Medicinal / Q000737:chemistry*; D011453:Prostaglandins / Q000096:biosynthesis*; D011817:Rabbits
chemical_list: D016227:Benzoquinones; D005663:Furans; D009285:Naphthoquinones; D010936:Plant Extracts; D011453:Prostaglandins; C073510:arnebinone; C073511:arnebifuranone