title: New diterpenes and norditerpenes from the fruits of Vitex rotundifolia.
abstract: A new labdane-type diterpene, vitexifolin A (1), a new clerodane-type diterpene, vitexifolin B (2), a new abeoabietane-type diterpene, vitexifolin C (3), and two new norlabdane-type diterpenes, vitexifolin D (4) and vitexifolin E (5), were isolated from the fruits of Vitex rotundifolia, along with a known halimane-type diterpene, vitetrifolin D (6), two known norlabdane-type diterpenes, trisnor-gamma-lactone (7) and iso-ambreinolide (8), and three known flavonoids, casticin (9), artemetin (10), and 5,3'-dihydroxy-6,7,4'-trimethoxyflavanone (11). Their chemical structures were determined on the basis of spectroscopic data. Casticin (9) exhibited considerable growth inhibitory activity against human lung cancer cells (PC-12) and human colon cancer cells (HCT116) using the MTT assay.
authors.affiliation: School of Agriculture, Kyushu Tokai University, Choyo 5435, Aso, Kumamoto 869-1404, Japan. mono@ktmail.ktokai-u.ac.jp
authors.forename: Masateru
authors.initials: M
authors.lastname: Ono
authors.forename: Takako
authors.initials: T
authors.lastname: Yanaka
authors.forename: Megumi
authors.initials: M
authors.lastname: Yamamoto
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Ito
authors.forename: Toshihiro
authors.initials: T
authors.lastname: Nohara
mesh_terms: D000818:Animals; D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D002851:Chromatography, High Pressure Liquid; D002945:Cisplatin / Q000494:pharmacology; D003110:Colonic Neoplasms; D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D004354:Drug Screening Assays, Antitumor; D005638:Fruit / Q000737:chemistry; D006801:Humans; D008175:Lung Neoplasms; D008968:Molecular Conformation; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D016716:PC12 Cells; D010946:Plants, Medicinal / Q000737:chemistry*; D051381:Rats; D014407:Tumor Cells, Cultured / Q000187:drug effects; D029648:Verbenaceae / Q000737:chemistry*
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D004224:Diterpenes; D002945:Cisplatin