title: [Dihydropenstemide from Penstemon confertus and the Preparation of epi-Dihydropenstemide from Penstemide.].
abstract: From leaves of PENSTEMON CONFERTUS Dougl. a valeriana-type ester iridoid has been isolated and structurally elucidated as dihydropenstemide by spectroscopic methods. Catalytic hydrogenation of penstemide provides a new compound, identified as 8- EPI-dihydropenstemide.
authors.affiliation: Institut für Pharmazeutische Biologie der Philipps-Universität Marburg, Deutschhausstraße 17 1/2, D-3550 Marburg/L, Bundesrepublik Deutschland.
authors.forename: B
authors.initials: B
authors.lastname: Gering
authors.forename: P
authors.initials: P
authors.lastname: Junior
authors.forename: M
authors.initials: M
authors.lastname: Wichtl