title: Two new cembranoids from the leaves of Croton longissimus Airy Shaw.
abstract: Two new cembrane-type diterpenoids (1 and 2) along with five known compounds (3-7) were isolated from leaves of Croton longissimus collected in Thailand. Their structures were elucidated from spectroscopic evidence and compound 4 was found by HPLC analysis to be identical to oblongionoside B-a compound isolated from Croton oblongifolius-including the absolute configuration at the C-9 position.
authors.affiliation: Department of Pharmacognosy, Graduate School of Biomedical Sciences, Hiroshima University, 1-2-3 Kasumi, Hiroshima, 734-8553, Japan.
authors.forename: Susumu
authors.initials: S
authors.lastname: Kawakami
authors.forename: Katsuyoshi
authors.initials: K
authors.lastname: Matsunami
authors.forename: Hideaki
authors.initials: H
authors.lastname: Otsuka
authors.forename: Duangporn
authors.initials: D
authors.lastname: Lhieochaiphant
authors.forename: Sorasak
authors.initials: S
authors.lastname: Lhieochaiphant
mesh_terms: D029802:Croton / Q000737:chemistry*; D004224:Diterpenes / Q000737:chemistry*; D015394:Molecular Structure; D018515:Plant Leaves / Q000737:chemistry*; D021241:Spectrometry, Mass, Electrospray Ionization
chemical_list: D004224:Diterpenes; C037071:cembrane