title: Three new tetranorditerpenes from aerial parts of acerola cherry (Malpighia emarginata).
abstract: Acerola cherry is a world famous fruit which contains abundant antioxidants such as vitamin C, anthocyanins, flavonoids, and phenolics. However, studies concerning bioactivity components from aerial parts of acerola (Malpighia emarginata) are scarce. In view of this, we have examined the constituents of aerial parts of acerola, and three new tetranorditerpenes acerolanins A-C (1-3) with a rare 2H-benz[e]inden-2-one substructure were isolated. Their structures were determined on the basis of spectral studies and acerolanin C was confirmed by X-ray crystallographic analysis. Furthermore, three new compounds have been studied for their cytotoxic activity.
authors.affiliation: State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, China. liujieqing@mail.kib.ac.cn.
authors.forename: Jie-Qing
authors.initials: JQ
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, China. yuanyuan_deng@yeah.net.
authors.forename: Yuan-Yuan
authors.initials: YY
authors.lastname: Deng
authors.affiliation: Amway (China) Botanical Research Center, Wuxi 214115, China. teric.li@amway.com.
authors.forename: Ting-Zhao
authors.initials: TZ
authors.lastname: Li
authors.affiliation: Amway (China) Botanical Research Center, Wuxi 214115, China. johnson.han@amway.com.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Han
authors.affiliation: State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, China. liyanb@mail.kib.ac.cn.
authors.forename: Yan
authors.initials: Y
authors.lastname: Li
authors.affiliation: State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Science, Kunming 650201, China. mhchiu@mail.kib.ac.cn.
authors.forename: Ming-Hua
authors.initials: MH
authors.lastname: Qiu
mesh_terms: D000872:Anthocyanins; D000975:Antioxidants / Q000737:chemistry* / Q000302:isolation & purification; D004224:Diterpenes / Q000737:chemistry* / Q000302:isolation & purification; D005421:Flavoring Agents / Q000737:chemistry; D005638:Fruit / Q000737:chemistry; D029581:Malpighiaceae / Q000737:chemistry*; D035261:Plant Components, Aerial / Q000737:chemistry; D010936:Plant Extracts / Q000737:chemistry*
chemical_list: D000872:Anthocyanins; D000975:Antioxidants; D004224:Diterpenes; D005421:Flavoring Agents; D010936:Plant Extracts