| CPC C07D 217/20 (2013.01) [A61K 9/0014 (2013.01); A61K 31/47 (2013.01); A61P 29/00 (2018.01)] | 7 Claims |

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1. A compound of Formula (I) or a salt, solvate or hydrate thereof,
![]() wherein:
R1 is selected from the group consisting of OH and OR7, wherein R7 is selected from the group consisting of substituted C1-6 alkyl and C1-6 alkyl;
R2 is selected from the group consisting of OH and OR7, wherein R7 is selected from the group consisting of substituted C1-6 alkyl and C1-6 alkyl;
R3 is selected from the group consisting of substituted C1-6 alkyl and C1-6 alkyl;
R4 is selected from the group consisting of H, —(CR18R19)tCOOR8, and —(CR18R19)tC(O)NR9R10; wherein t is 0, R8 is selected from the group consisting of H substituted C1-6 alkyl and C1-6 alkyl, R9 is H and R10 is selected from the group consisting of substituted C1-6 alkyl and C1-6 alkyl;
R5 is H; and
R6 is selected from the group consisting of H and halo;
wherein the term substituted C1-6 alkyl, refers to a C1-6 alkyl substituted one or more times with a substituent independently selected from the group consisting of halo; hydroxy; hydroxy substituted C1-3 alkyl; C1-3 alkoxy; halo substituted C1-3 alkoxy; S(O)mC1-3 alkyl; NR22R23, wherein R22 and R23 are independently selected from H or C1-3 alkyl or wherein R22 and R23 together with the nitrogen to which they are attached form a 5 to 7 membered ring which optionally contains an additional heteroatom selected from O, N, or S; C1-3 alkyl; C3-7 cycloalkyl, or C3-7 cycloalkyl C1-3 alkyl group; halo substituted C1-3 alkyl; substituted aryl or substituted aryl C1-3 alkyl and wherein these aryl containing moieties may also be substituted one to two times by halo; hydroxy; hydroxy substituted C1-3 alkyl; C1-3 alkoxy; S(O)mC1-3 alkyl; amino, mono and di-substituted C1-3 alkylamino; C1-3 alkyl, or CF3.
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