title: Parnapimarol and nepetaparnone from Nepeta parnassica.
abstract: Parnapimarol (1), a new pimarane diterpene, along with nepetaparnone (2) and nepetanudone (3), one new and one previously reported nepetalactone dimer, respectively, were isolated from the dichloromethane extract of the aerial parts of Nepeta parnassica, collected on Mt. Parnassos, Greece. The structures and relative configurations of 1-3 were determined on the basis of their spectroscopic characteristics (1D and 2D NMR, IR, MS). The structure of 2 was confirmed by single-crystal X-ray diffraction analysis. The insecticidal activity of 1-3 against ants and mosquito larvae was also evaluated.
authors.affiliation: Department of Pharmacognosy and Chemistry of Natural Products, School of Pharmacy, University of Athens, Panepistimiopolis Zografou, Athens, Greece.
authors.forename: Giorgos
authors.initials: G
authors.lastname: Gkinis
authors.forename: Efstathia
authors.initials: E
authors.lastname: Ioannou
authors.forename: Antonio
authors.initials: A
authors.lastname: Quesada
authors.forename: Constantinos
authors.initials: C
authors.lastname: Vagias
authors.forename: Olga
authors.initials: O
authors.lastname: Tzakou
authors.forename: Vassilios
authors.initials: V
authors.lastname: Roussis
mesh_terms: D045784:Abietanes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D000818:Animals; D001000:Ants / Q000187:drug effects; D018360:Crystallography, X-Ray; D009033:Culicidae / Q000187:drug effects; D006115:Greece; D007306:Insecticides / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D007783:Lactones / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D007814:Larva / Q000187:drug effects; D008968:Molecular Conformation; D015394:Molecular Structure; D027521:Nepeta / Q000737:chemistry*; D019906:Nuclear Magnetic Resonance, Biomolecular; D010946:Plants, Medicinal / Q000737:chemistry*
chemical_list: D045784:Abietanes; D007306:Insecticides; D007783:Lactones; C530316:nepetanudone; C530317:nepetaparnone; C530315:parnapimarol