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. 2021 Oct 4;226:113857. doi: 10.1016/j.ejmech.2021.113857

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Fig. 9 — Structures of Alkaloids for S protein-ACE2 repressors. (42) Ephedrine; (43) Pseudoephedrine; (44) Methylephedrine; (45) Cryptospirolepine; (46) Cryptoquindoline; (47) Speciophylline; (48) Uncarine F; (49) Solanine; (50) Bicuculline; (51) Anisodamine.