title: Chemical Constituents from Sinningia canescens and S. warmingii.
abstract: A new naphthoquinone, 6-methoxy-7-hydroxy-a-dunnione (1), along with four known compounds (2, 4, 10, and 11) were isolated from Sinningia canescens (Mart.) Wiehler tubers, while S. warmingii (Hiern.) Chautems furnished eight known compounds (3-10). The known compounds were identified as 7-hydroxy- α-dunnione (2), lapachenole (3), tectoquinone (4), 7-methoxytectoquinone (5), 1-hydroxytectoquinone (6), 7-hydroxytectoquinone (7), aggregatin C (8), aggregatin D (9), halleridone (10), and cedrol (11). In addition, S. canescens yielded a volatile fraction, which was analyzed by GC/FID and GC/MS. This fraction was constituted mainly by sesquiterpene hydrocarbons (82.6%). The major components were β-santalene (14.6%), β-cedrene (10.4%), and trans-cadina-1(6)-4-diene (10.0%).
authors.forename: Maria Helena
authors.initials: MH
authors.lastname: Verdan
authors.forename: Carlos Augusto
authors.initials: CA
authors.lastname: Ehrenfried
authors.forename: Dilamara Riva
authors.initials: DR
authors.lastname: Scharf
authors.forename: Armando Carlos
authors.initials: AC
authors.lastname: Cervi
authors.forename: Marcos José
authors.initials: MJ
authors.lastname: Salvadore
authors.forename: Andersson
authors.initials: A
authors.lastname: Barison
authors.forename: Elida A
authors.initials: EA
authors.lastname: Stefanello
mesh_terms: D001572:Benzofurans / Q000737:chemistry; D001578:Benzopyrans / Q000737:chemistry; D003512:Cyclohexanones / Q000737:chemistry; D008401:Gas Chromatography-Mass Spectrometry; D019684:Magnoliopsida / Q000737:chemistry*; D009285:Naphthoquinones / Q000737:chemistry; D000081223:Polycyclic Sesquiterpenes; D013729:Terpenes / Q000737:chemistry
chemical_list: D001572:Benzofurans; D001578:Benzopyrans; D003512:Cyclohexanones; D009285:Naphthoquinones; D000081223:Polycyclic Sesquiterpenes; D013729:Terpenes; C552224:aggregatin D; C498939:lapachenole; C474009:dunnione; C078669:cedrol; C058896:halleridone