title: Characterization of New Ent-kaurane Diterpenoids of Yunnan Arabica Coffee Beans.
abstract: Five new ent-kaurane diterpenoids, named mascaroside III-V (1-3), and 20-nor-cofaryloside I-II (4-5), together with seven known diterpenoids, were isolated from methanol extracts of the green coffee beans of Yunnan Arabica Coffee. Their chemical structures were elucidated by extensive spectroscopic analyses. Meanwhile, cytotoxicity assay against HL-60, A-549, SMMC-7721, MCF-7 and SW480 cell lines showed that they have not evident inhibition of cytotoxicity.
authors.affiliation: State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China.|University of Chinese Academy of Sciences, Beijing, 100049, China.
authors.forename: Rui
authors.initials: R
authors.lastname: Chu
authors.affiliation: State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China.
authors.forename: Luo-Sheng
authors.initials: LS
authors.lastname: Wan
authors.affiliation: State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China.
authors.forename: Xing-Rong
authors.initials: XR
authors.lastname: Peng
authors.affiliation: State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China.|University of Chinese Academy of Sciences, Beijing, 100049, China.
authors.forename: Mu-Yuan
authors.initials: MY
authors.lastname: Yu
authors.affiliation: State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China.
authors.forename: Zhi-Run
authors.initials: ZR
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China.
authors.forename: Lin
authors.initials: L
authors.lastname: Zhou
authors.affiliation: State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China.
authors.forename: Zhong-Rong
authors.initials: ZR
authors.lastname: Li
authors.affiliation: State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China. mhchiu@mail.kib.ac.cn.|University of Chinese Academy of Sciences, Beijing, 100049, China. mhchiu@mail.kib.ac.cn.
authors.forename: Ming-Hua
authors.initials: MH
authors.lastname: Qiu
keywords: Coffea arabica L.; Diterpenoids; Green coffee beans; Structural elucidation