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. 2022 Dec 8;131:106316. doi: 10.1016/j.bioorg.2022.106316

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Fig. 1 — A. Chemical structures of representative small-molecule SARS-CoV-2 fusion inhibitors 1–5Fig. 1B. Chemical structures of betulinic acid 6, betulonic acid 7, the hit compound BA-1 and the lead compound BA-4.

Fig. 1 — A. Chemical structures of representative small-molecule SARS-CoV-2 fusion inhibitors 1–5Fig. 1B. Chemical structures of betulinic acid 6, betulonic acid 7, the hit compound BA-1 and the lead compound BA-4.