Patent ID: 11939327
Assignee: TAKEDA PHARMACEUTICAL COMPANY LIMITED
Field: Pharmaceuticals (Chemistry)
Classification: CPC C  A | IPC C

Claim 1:
2. The method according to claim 1, wherein
R1 and R2 are each independently
(1) a hydrogen atom,
(2) a C1-6 alkyl group optionally substituted by 1 to 3 substituents selected from
(a) a cyano group, and
(b) a C3-10 cycloalkyl group, or
(3) a 3- to 14-membered non-aromatic heterocyclic group, or
R1 and R2 are bonded to each other to form, together with the adjacent nitrogen atom, a 3- to 14-membered non-aromatic nitrogen-containing heterocycle optionally further substituted by 1 to 3 substituents selected from
(a) a halogen atom,
(b) a C1-6 alkyl group optionally substituted by 1 to 3 halogen atoms, and
(c) a C1-6 alkoxy group;
R3 is a C1-6 alkyl group optionally substituted by 1 to 3 substituents selected from
(a) a halogen atom,
(b) a cyano group, and
(c) a C1-6 alkoxy group;
X is CR4 or N;
R4 is
(1) a hydrogen atom,
(2) a halogen atom, or
(3) a C1-6 alkyl group;
R5 is
(1) a hydrogen atom, or
(2) a C1-6 alkyl group;
R6 is a hydrogen atom; and
Ring A is
(1) a benzene ring optionally further substituted by 1 to 4 substituents selected from (i) a halogen atom, and (ii) a C1-6 alkoxy group, or
(2) a pyridine ring optionally further substituted by 1 to 4 halogen atoms.