title: Secondary metabolites from the liverwort Jamesoniella colorata.
abstract: Six new labdane type diterpenoids, three seco-clerodane diterpenoids, jamesoniellide I, along with the two new jamesoniellides K and L, the sesquiterpene waitziacuminone and a new chlorinated bisbibenzyl, 6,6',10,10',12,12'-hexachloroisoperrottetin A, have been isolated from the liverwort Jamesoniella colorata. Their structures were elucidated by NMR spectroscopy. The absolute configuration of 3-oxo-labda-8(17),13(16),14-triene (1) was established by CD spectroscopy.
authors.affiliation: FR 8.7, Pharmakognosie und Analytische Phytochemie der Universität des Saarlandes, D-66041 Saarbrücken, Germany.
authors.forename: Ursula Maria
authors.initials: UM
authors.lastname: Hertewich
authors.forename: Josef
authors.initials: J
authors.lastname: Zapp
authors.forename: Hans
authors.initials: H
authors.lastname: Becker
mesh_terms: D002942:Circular Dichroism; D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification / Q000378:metabolism*; D035926:Hepatophyta / Q000737:chemistry / Q000378:metabolism*; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation
chemical_list: D004224:Diterpenes