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Three novel 14-membered cyclopeptide alkaloids, justicianenes B-D (1-3), were isolated from the EtOH extract of the whole plant of Justicia procumbens L., and their structures were determined on the basis of detailed NMR spectroscopic data and the absolute stereochemistry of the ring-bonded α-amino acids in the cyclopeptide alkaloids were determined by ECD spectra. The isolated compounds were evaluated for their in vitro cytotoxicity against human cancer cell lines, including brest cancer MCF-7, cervix carcinoma HeLa, lung cancer A549 an
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