title: New clerodane diterpenes from Tinospora sagittata var. yunnanensis.
abstract: Four new clerodane diterpenes, namely sagittatayunnanosides A-D (1-4), were isolated from the roots of Tinospora sagittata var. yunnanensis, together with two known compounds, tinospinoside C (5) and tinospinoside E (6). The structures of the four new compounds were well elucidated by extensive analyses of the MS, IR, and 1D and 2D NMR data. The cytotoxic and antifouling activities of compounds 1-6 were evaluated.
authors.affiliation: Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, School of Chemistry and Biotechnology, Yunnan University of Nationalities, Kunming, Yunnan, P. R. China.
authors.forename: Zhi-Yong
authors.initials: ZY
authors.lastname: Jiang
authors.affiliation: Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, School of Chemistry and Biotechnology, Yunnan University of Nationalities, Kunming, Yunnan, P. R. China.
authors.forename: Wen-Juan
authors.initials: WJ
authors.lastname: Li
authors.affiliation: Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, School of Chemistry and Biotechnology, Yunnan University of Nationalities, Kunming, Yunnan, P. R. China.
authors.forename: Li-Xiang
authors.initials: LX
authors.lastname: Jiao
authors.affiliation: Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, School of Chemistry and Biotechnology, Yunnan University of Nationalities, Kunming, Yunnan, P. R. China.
authors.forename: Jun-Ming
authors.initials: JM
authors.lastname: Guo
authors.affiliation: Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, School of Chemistry and Biotechnology, Yunnan University of Nationalities, Kunming, Yunnan, P. R. China.
authors.forename: Kai
authors.initials: K
authors.lastname: Tian
authors.affiliation: Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, School of Chemistry and Biotechnology, Yunnan University of Nationalities, Kunming, Yunnan, P. R. China.
authors.forename: Chun-Tao
authors.initials: CT
authors.lastname: Yang
authors.affiliation: Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, School of Chemistry and Biotechnology, Yunnan University of Nationalities, Kunming, Yunnan, P. R. China.
authors.forename: Xiang-Zhong
authors.initials: XZ
authors.lastname: Huang
mesh_terms: D045744:Cell Line, Tumor; D045785:Diterpenes, Clerodane / Q000737:chemistry / Q000302:isolation & purification*; D006801:Humans; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D021241:Spectrometry, Mass, Electrospray Ionization; D013055:Spectrophotometry, Infrared; D031610:Tinospora / Q000737:chemistry*
chemical_list: D045785:Diterpenes, Clerodane