Patent ID: 8907087

Claim:
A compound having formula (III): or a pharmaceutically acceptable salt, tautomer or stereoisomer thereof, wherein: X is halogen, B(OR + ) 2 or Sn(R ++ ) 3 ; each R + is independently hydrogen or substituted or unsubstituted C 1-3 alkyl, or each R + , together with the boron atom and the atoms to which they are attached, form a cyclic boronate; each R ++ is independently C 1-4 alkyl; R 2 is H, unsubstituted C 1-8 alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocyclyl, substituted or unsubstituted heterocyclylalkyl, or substituted or unsubstituted cycloalkylalkyl; and R 3 and R 4 are each independently H, substituted or unsubstituted C 1-8 alkyl, substituted or unsubstituted aryl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocyclyl, substituted or unsubstituted heterocyclylalkyl, substituted or unsubstituted aralkyl, or substituted cycloalkylalkyl, wherein substituted means substituted with a substituent selected from the group consisting of chloro; iodo; bromo; fluoro; alkyl; hydroxy; alkoxy; alkoxyalkyl; amino; alkylamino; carboxy; nitro; cyano; thiol; thioether; imine; imide; amidine; guanidine; enamine; aminocarbonyl; acylamino; phosphonato; phosphine; thiocarbonyl; alkylsulfonyl; sulfonamide; acyl; ester; urea; urethane; oxime; hydroxylamine; alkoxyamine; aralkoxyamine; N-oxide; hydrazine; hydrazide; hydrazone; azide; isocyanate; isothiocyanate; cyanate; thiocyanate; oxo; B(OH) 2 , O(alkyl)aminocarbonyl; cycloalkyl, which may be monocyclic or fused or non-fused polycyclic, or a heterocyclyl, which may be monocyclic or fused or non-fused polycyclic; monocyclic or fused or non-fused polycyclic aryl or heteroaryl; aryloxy; aralkyloxy; heterocyclyloxy; and heterocyclylalkoxy.