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None None None Inhibitory effect on SARS‐CoV‐2 infection of neferine by blocking Ca²⁺‐dependent membrane fusion None None None Discovery and Nanosized Preparations of (S,R)-Tylophorine Malate as Novel anti-SARS-CoV-2 Agents None Discovery of cyclic sulfonamide derivatives as potent inhibitors of SARS-CoV-2