title: Labdane-type diterpenes and a nordrimane-type sesquiterpene from the stem bark of Thuja standishii.
abstract: Two new labdane-type diterpene aldehydes, 15-oxolabda-8(17),11(Z), 13(E)-trien-19-oic acid (1) and 15-oxolabda-8(17),11(Z), 13(Z)-trien-19-oic acid (2), and a new nordrimane-type sesquiterpene, 12-oxo-11-nordrim-8-en-14-oic acid (3), along with a known diterpene, 15-nor-14-oxolabda-8(17),12(E)-dien-19-oic acid (4), were isolated from the stem bark of Thuja standishii. The structures of 1-3 were established by spectroscopic methods.
authors.affiliation: Department of Medicinal Chemistry, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Iwamoto
authors.forename: H
authors.initials: H
authors.lastname: Ohtsu
authors.forename: S
authors.initials: S
authors.lastname: Matsunaga
authors.forename: R
authors.initials: R
authors.lastname: Tanaka
mesh_terms: D032462:Cycadopsida / Q000737:chemistry*; D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification*; D007564:Japan; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure
chemical_list: D004224:Diterpenes