Four new lignanamides, hancamides A - D (1-4), together with four known analogs (5-8), were isolated from the stems of Piper hancei Maxim. Their structures were determined based on 1D and 2D NMR, IR, UV, and HR-ESIMS spectroscopic analysis as well as by comparison with the reported data. All the isolates exhibited potential inhibitory effects on NO production in LPS-induced BV-2 microglial cells, with IC values of 4.26-40.68 μM. Moreover, compounds 2 and 8 displayed moderate cytotoxic activities against MGC-803, HepG2, SKOV-3, T24, and HeLa cells, with IC values ranging from 13.57 to 34.20 μM, respectively.
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| http://dx.doi.org/10.1016/j.fitote.2022.105231 | DOI Listing |
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