Abstract: Provided are stellate compounds that target spike proteins and have a significant anti-SARS-CoV-2 ability and a certain broad spectrum. Such molecules and salts thereof have at least one basic unit R(X)n, which binds at an orthotopic binding site such as an MD domain or an allosteric site, to a virus containing spike proteins or a virus having spike proteins on its surface, thereby preventing coronavirus or other viruses which express spike proteins on their surfaces from invading host cells, and preventing the occurrence of viral infection. In addition, interaction of the molecules and salts thereof with vitamin K-dependent proteins in the human body inhibits the expression of vitamin K so as to inhibit blood coagulation in the human body, thereby treating thrombosis caused by coronavirus and producing a curative effect for pneumonia caused by a severe viral infection.