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A New Amide and Antioxidant Constituents of Piper taiwanense

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A new amide, pipertaiwanamide (1), has been isolated from the aerial part of Piper taiwanense, together with four known compounds, taiwanamide A (2), taiwanamide B (3), 1-cinnamoylpyrrolidine (4), and N-cinnamoyltyramine (5). The structure of the new compound 1 was determined through spectroscopic and MS analyses. Pipertaiwanamide (1) and N-cinnamoyltyramine (5) exhibited free radical scavenging activity, with IC0.200 values of 12.6 ± 1.4 and 8.5 ± 0.8 𝜇M, respectively, in the diphenylpicrylhydrazyl radical (DPPH) decoloration assay.

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Acknowledgment

This research was supported by a grant from the Ministry of Science and Technology, Taiwan (NSC 101-2320-B-127-001-MY3), awarded to Prof. J.-J. Chen.

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Correspondence to Jih-Jung Chen.

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Published in Khimiya Prirodnykh Soedinenii, No. 6, November–December, 2017, pp. 949–952.

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Chen, JJ., Wang, SW., Chen, CL. et al. A New Amide and Antioxidant Constituents of Piper taiwanense . Chem Nat Compd 53, 1117–1121 (2017). https://doi.org/10.1007/s10600-017-2213-y

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  • DOI: https://doi.org/10.1007/s10600-017-2213-y

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