CPC A61K 31/454 (2013.01) [A61P 13/12 (2018.01)] | 14 Claims |
1. A method of treating IgAN (immuneglobuline A nephropathy), in a patient suffering therefrom, comprising the step of administering an effective amount of a compound of formula (I) or a pharmaceutically acceptable salt thereof to said patient, wherein
R is hydrogen, C1-C4alkyl, or C1-C6alkoxy;
R1 is C1-C6alkoxy;
R2 is C1-C6alkyl;
R3 is C1-C6alkoxy; C1-C6alkyl; or hydroxyl;
R4 is phenyl, optionally substituted by —C(O)R8, and
R8 is hydroxy, C1-C4alkoxy, or amino.
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