title: Rotenoids from roots of Clitoria Fairchildiana.
abstract: A new rotenoid, named 9-demethylclitoriacetal, together with the known compounds, 11-deoxyclitoriacetal, 6-deoxyclitoriacetal, clitoriacetal and stemonal, was isolated from roots of Clitoria fairchildiana. Its structure was elucidated as 6a,12a-dihydro-6,9,11,12a-tetrahydroxy-2,3-dimethoxy-[1]benzopyrano[3,4-b] [1]benzopyran-12(6H)-one (1), on the basis of spectroscopic and chemical evidence.
authors.affiliation: Núcleo de Pesquisas de Produtos Naturais, Universidade Federal do Rio de Janeiro, 21941-590, Rio de Janeiro, Brazil
authors.forename: Bernadete P.
authors.initials: BP
authors.lastname: Silva
authors.forename: Robson R.
authors.initials: RR
authors.lastname: Bernardo
authors.forename: José P.
authors.initials: JP
authors.lastname: Parente