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New Norneolignan and Bioactive Constituents of Clitoria ternatea

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Chemistry of Natural Compounds Aims and scope

A new norneolignan derivative, clitorternalactone (1), has been isolated from the stems of Clitoria ternatea, together with six known compounds, clitorienolactone A (2), myricetin 3-glucoside (3), quercetin 3-glucoside (4), kaempferol 3-glucoside (5), taraxerol (6), and taraxerone (7). The structure of the new compound 1 was determined through spectroscopic and MS analyses. Among the isolates, compound 1 exhibited cytotoxicities with IC50 values of 2.54 ± 0.23, 3.68 ± 0.17, and 4.05 ± 0.43 μM, respectively, against DLD-1, CCRF-CEM, and IMR-32 cell lines. In addition, clitorternalactone (1), clitorienolactone A (2), quercetin 3-glucoside (4), and kaempferol 3-glucoside (5) showed potent inhibition with IC50 values of 3.05 ± 0.12, 5.44 ± 0.46, 10.20 ± 0.69, and 13.57 ± 0.36 μM, respectively, against LPS-induced NO generation.

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Acknowledgment

This research was supported by a grant from the Ministry of Science and Technology, Taiwan (MOST 106-2320-B-010-033-MY3), awarded to Prof. J.-J. Chen. This work was also supported by grants from Far Eastern Memorial Hospital–National Yang-Ming University Joint Research Program (108DN22), Medical Research Fund (No. 108-22) of Kaohsiung Armed Forces General Hospital, and Yuan’s General Hospital (YGH 19-027). Fu-Sen Wu, Ching-Ju Hung, and Chien-Liang Lin have contributed equally to this manuscript.

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Correspondence to Jih-Jung Chen.

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Published in Khimiya Prirodnykh Soedinenii, No. 6, November–December, 2020, pp. 863–866.

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Wu, FS., Hung, CJ., Lin, CL. et al. New Norneolignan and Bioactive Constituents of Clitoria ternatea. Chem Nat Compd 56, 1000–1004 (2020). https://doi.org/10.1007/s10600-020-03213-w

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  • DOI: https://doi.org/10.1007/s10600-020-03213-w

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