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. 2018 Dec 21;19(3):1654–1664. doi: 10.3892/mmr.2018.9785

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Copyright: © Wang et al.

This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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Figure 1. — Synthesis of 1,4-naphthoquinone derivatives EPDMNQ and ENDMNQ. (A) Process of synthetic EPDMNQ and ENDMNQ generation. (B) Structural formulas of EPDMNQ and ENDMNQ. EPDMNQ, 2,3-dihydro-2,3-epoxy-2-propylsulfonyl-5,8-dimethoxy-1,4-naphthoquinone; ENDMNQ, 2,3-dihydro-2,3-epoxy-2-nonylsulfonyl-5,8-dimethoxy-1,4-naphthoquinone.