A new benzophenone derivative, hyperinagasone (1), has been isolated from the aerial part of Hypericum nagasawae together with six known compounds, trichadonic acid (2), norathyriol (3), euxanthone (4), subalatin (5), hyperielliptone D (6), and 1,4-O-diferuloylsecoisolariciresinol (7). The structure of new compound 1 was determined through spectroscopic and MS analyses. Among the isolates, compounds 2, 4, and 7 exhibited cytotoxicities, with IC50 values of 17.25 ± 1.55, 18.14 ± 1.07, and 10.31 ± 0.92 μM, respectively, against the DLD-1 cell line. Compounds 2, 5, and 7 also exhibited cytotoxicities, with IC50 values of 15.10 ± 1.13, 15.89 ± 0.94, and 17.54 ± 1.16 μM, respectively, against the CCRF-CEM cell line. Norathyriol (3) and 7 exhibited cytotoxicities, with IC50 values of 19.62 ± 2.88 and 6.26 ± 0.50 μM, respectively, against HL-60 cell line. Hyperinagasone (1) and 1,4-O-diferuloylsecoisolariciresinol (7) exhibited cytotoxicities, with IC50 values of 16.83 ± 1.55 and 11.38 ± 0.87 μM, respectively, against the IMR-32 cell line. In addition, 3, 4, and 7 showed potent inhibition, with IC50 values of 5.89 ± 0.43, 7.55 ± 0.54, and 8.12 ± 0.91 μM, respectively, against LPS-induced NO generation.
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Acknowledgment
This research was supported by the grant from the Ministry of Science and Technology, Taiwan (MOST 109-2320-B-010-029-MY3), awarded to Prof. J.-J. Chen. This work was also supported by the grants from Far Eastern Memorial Hospital–National Yang Ming Chiao Tung University Joint Research Program (110DN21), Medical Research Fund (KAFGH-A-110002) of Kaohsiung Armed Forces General Hospital, and Kaohsiung Veterans General Hospital Tainan Branch (VHYK110-07). We gratefully thank Ms. Shou-Ling Huang and Dr. Iren Wang for the assistance in NMR experiments of the Instrumentation Center at NTU, which is supported by the Ministry of Science and Technology, Taiwan. Fu-Sen Wu, I-Chou Wang, Chia-Ching Liaw, and Hsueh-Yang Huang have contributed equally to this manuscript.
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Published in Khimiya Prirodnykh Soedinenii, No. 5, September–October, 2022, pp. 704–708.
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Wu, FS., Wang, IC., Liaw, CC. et al. New Benzophenone and Bioactive Constituents from Hypericum nagasawae. Chem Nat Compd 58, 833–838 (2022). https://doi.org/10.1007/s10600-022-03810-x
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DOI: https://doi.org/10.1007/s10600-022-03810-x