title: Ambrosanolides and other constituents of two rudbeckia species.
abstract: Aerial parts of RUDBECKIA SUBTOMENTOSA Pursh furnished four C-15 functionalized ambrosanolides, one of them new, as well as coumarin. Aerial parts of RUDBECKIA TRILOBA L. var. TRILOBA furnished coumarin and two closely related thiopheneacetylenes.
authors.affiliation: Department of Chemistry, The Florida State University, Tallahassee, Florida 32306, USA.
authors.forename: A B
authors.initials: AB
authors.lastname: Gutiérrez
authors.forename: W
authors.initials: W
authors.lastname: Herz