| abstract |
The present invention provides an inhibitor of influenza virus replication. A compound (1) of a polymorphic form or a pharmaceutically acceptable salt thereof (wherein the compound (1) is represented by the following structural formula) is a compound (1) · 1 of form A. HCl salt of 2H 2 O, HCl salt of compound (1) · 3H 2 O in F form, HCl salt of compound (1) in D, compound (1) of A and compound (1) of A It is a tosylate salt. Such polymorphs are used to treat influenza, to inhibit influenza virus replication, or to reduce the amount of influenza virus in a biological sample or subject. 【Selection chart】 None |