title: Four new cytotoxic germacranolides from Carpesium divaricatum.
abstract: In a bioassay-guided search for cytotoxic compounds from higher plants of South Korea, four new sesquiterpenes of the germacranolide type, named cardivins A (1), B (2), C (3), and D (4), have been isolated from the aerial parts of Carpesium divaricatum. Structures of these compounds were elucidated on the basis of spectroscopic techniques. Compounds 1, 2, 3, and 4 showed cytotoxicity to the human tumor cells, A-549 (nonsmall cell lung), SK-OV-3 (ovary), SK-MEL-2 (skin), XF-498 (central nervous system), and HCT-15 (colon).
authors.affiliation: Natural Products Laboratory, College of Pharmacy, Sung Kyun Kwan University, Suwon, Korea.
authors.forename: D K
authors.initials: DK
authors.lastname: Kim
authors.forename: N I
authors.initials: NI
authors.lastname: Baek
authors.forename: S U
authors.initials: SU
authors.lastname: Choi
authors.forename: C O
authors.initials: CO
authors.lastname: Lee
authors.forename: K R
authors.initials: KR
authors.lastname: Lee
authors.forename: O P
authors.initials: OP
authors.lastname: Zee
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000302:isolation & purification* / Q000494:pharmacology; D004354:Drug Screening Assays, Antitumor; D006801:Humans; D007723:Korea; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D010946:Plants, Medicinal / Q000737:chemistry*; D012717:Sesquiterpenes / Q000302:isolation & purification* / Q000494:pharmacology; D013055:Spectrophotometry, Infrared; D014407:Tumor Cells, Cultured
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D012717:Sesquiterpenes