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. 2020 Oct 22:1–25. doi: 10.1080/07391102.2020.1835726

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Figure 20. — Structure of alkaloids with highest binding affinity to ACE2, TMPRSS2 and SARS-CoV-2 spike glycoprotein (a) Cryptospirolepine, (b) Cryptoquindoline, (c) Isocryptolepine, (d) 10–Hydroxyusambarensine, and (e) Strychnopentamin.