title: Naphthochromenes and Related Constituents from the Tubers of Sinningia allagophylla.
abstract: Chemical investigation of the tubers of Sinningia allagophylla led to the isolation of two new chromenes, (2S)-12-hydroxylapachenole (1) and (3R)-3,4-dihydro-3-hydroxy-4-oxo-8-methoxylapachenole (2), and three new dimeric chromenes, allagophylldimers A-C (3-5). Thirteen known compounds, 6-methoxy-7,8-benzocoumarin (6), lapachenole, 8-methoxylapachenole, tectoquinone, 7-hydroxytectoquinone, dunniol, α-dunnione, dunnione, 8-hydroxydunnione, aggregatin E, cedrol, oleanolic acid, and halleridone, were also identified. 6-Methoxy-7,8-benzocoumarin (6) has been isolated for the first time from a natural source.
authors.affiliation: Departamento de Química, Universidade Federal do Paraná , 81530-900, Curitiba, PR, Brazil.
authors.forename: Dilamara R
authors.initials: DR
authors.lastname: Scharf
authors.affiliation: Departamento de Química, Universidade Federal do Paraná , 81530-900, Curitiba, PR, Brazil.
authors.forename: Maria H
authors.initials: MH
authors.lastname: Verdan
authors.affiliation: Instituto de Química, Laboratório de Química de Coordenação, Universidade Estadual de Campinas , 13083-970, Campinas, SP, Brazil.
authors.forename: Marcos A
authors.initials: MA
authors.lastname: Ribeiro
authors.affiliation: Departamento de Química, Universidade Regional de Blumenau , 89030-903, Blumenau, SC, Brazil.
authors.forename: Edesio L
authors.initials: EL
authors.lastname: Simionatto
authors.affiliation: Departamento de Química, Universidade Federal do Paraná , 81530-900, Curitiba, PR, Brazil.
authors.forename: Eduardo L
authors.initials: EL
authors.lastname: Sá
authors.affiliation: Instituto de Biologia, Departamento de Biologia Vegetal, PPG- BTPB, and PPG-BV, Universidade Estadual de Campinas , 13083-970, Campinas, SP, Brazil.
authors.forename: Marcos J
authors.initials: MJ
authors.lastname: Salvador
authors.affiliation: Departamento de Química, Universidade Federal do Paraná , 81530-900, Curitiba, PR, Brazil.
authors.forename: Andersson
authors.initials: A
authors.lastname: Barison
authors.affiliation: Departamento de Química, Universidade Federal do Paraná , 81530-900, Curitiba, PR, Brazil.
authors.forename: Maria E A
authors.initials: ME
authors.lastname: Stefanello
mesh_terms: D001572:Benzofurans / Q000737:chemistry / Q000302:isolation & purification; D001578:Benzopyrans / Q000737:chemistry / Q000302:isolation & purification*; D001938:Brazil; D003512:Cyclohexanones / Q000737:chemistry / Q000302:isolation & purification; D015394:Molecular Structure; D009281:Naphthalenes / Q000737:chemistry / Q000302:isolation & purification*; D009285:Naphthoquinones / Q000737:chemistry / Q000302:isolation & purification; D035281:Plant Tubers / Q000737:chemistry*; D010946:Plants, Medicinal / Q000737:chemistry*; D000081223:Polycyclic Sesquiterpenes; D013729:Terpenes / Q000737:chemistry / Q000302:isolation & purification
chemical_list: D001572:Benzofurans; D001578:Benzopyrans; D003512:Cyclohexanones; D009281:Naphthalenes; D009285:Naphthoquinones; D000081223:Polycyclic Sesquiterpenes; D013729:Terpenes; C498939:lapachenole; C474009:dunnione; C078669:cedrol; C058896:halleridone