CPC C07D 401/14 (2013.01) [C07D 401/12 (2013.01)] | 6 Claims |
1. A compound of formula I
or a stereoisomer or pharmaceutically acceptable salt thereof,
wherein
X is —N— or —CH—;
R1 is —C(O)R1a;
R1a is C3-6 cycloalkyl;
R2 is C1-6 alkoxy;
R3 is C1-6 alkyl or C3-6 cycloalkyl.
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