A compound of Formula: or a pharmaceutically acceptable salt thereof, wherein: B is boron; each instance of G 1, G 2, G 3, G 5, G 6, G 7 and G 8 is independently hydrogen, optionally substituted C 1-6 alkyl, optionally substituted C 1-6 alkenyl, optionally substituted C 1-6 alkynyl, optionally substituted aryl, optionally substituted acyl, -OR A, -CH 2 OR A, -OC R A, -SR A, - N(R B) 2, -N(R A)C R A, -C N(R B) 2, -CN, -NO 2, -C R A, -C OR A, -S R A, -SO 2 R A, - SO 3 R A, -SO 2 N(R B) 2, and -NHSO 2 R B; each R A is independently selected from hydrogen, optionally substituted C 1 -C 6 alkyl, optionally substituted alkenyl, optionally substituted alkynyl, optionally substituted heterocyclyl, and optionally substituted aryl; and each R B is independently selected from hydrogen, optionally substituted C 1 -C 6 alkyl, optionally substituted alkenyl, optionally substituted alkynyl, optionally substituted heterocyclyl, and optionally substituted aryl, or two R B taken together with the intervening nitrogen form a heterocycle. each instance of G 4a and G 4b is fluoro, alkyl, alkoxy, aryloxy, or alkynyl, wherein alkyl and alkoxy groups are unbranched, saturated, and have 1-4 carbon atoms; aryl groups and aryl groups of aryloxy can be either carbocyclic aryl or heterocyclic aryl; carbocyclic aryl groups have a total of 6-20 carbon atoms, including carbon atoms of substituents; heterocyclic aryl groups have a total of 5-20 carbon atoms, including carbon atoms of substituents; carboalkoxy groups are alkyl esters of a carboxylic acid wherein alkyl groups are as defined above; each alkyl, aryl, alkoxy, aryloxy, benzo, and carboalkoxy, independently, may be unsubstituted or substituted with one or more substituent; alkyl substituents are halo, hydroxyl, amino, or aryl; aryl substituents are halo, hydroxyl, amino, alkyl, aryl, nitro, or carboxyl; and halo substituents are fluoro or chloro; and n is 0, 1, 2, 3, or 4. B is boron; each instance of G 1, G 2, G 3, G 5, G 6, G 7 and G 8 is independently hydrogen, optionally substituted C 1-6 alkyl, optionally substituted C 1-6 alkenyl, optionally substituted C 1-6 alkynyl, optionally substituted aryl, optionally substituted acyl, -OR A, -CH 2 OR A, -OC R A, -SR A, - N(R B) 2, -N(R A)C R A, -C N(R B) 2, -CN, -NO 2, -C R A, -C OR A, -S R A, -SO 2 R A, - SO 3 R A, -SO 2 N(R B) 2, and -NHSO 2 R B; each R A is independently selected from hydrogen, optionally substituted C 1 -C 6 alkyl, optionally substituted alkenyl, optionally substituted alkynyl, optionally substituted heterocyclyl, and optionally substituted aryl; and each R B is independently selected from hydrogen, optionally substituted C 1 -C 6 alkyl, optionally substituted alkenyl, optionally substituted alkynyl, optionally substituted heterocyclyl, and optionally substituted aryl, or two R B taken together with the intervening nitrogen form a heterocycle. each instance of G 4a and G 4b is fluoro, alkyl, alkoxy, aryloxy, or alkynyl, wherein alkyl and alkoxy groups are unbranched, saturated, and have 1-4 carbon atoms; aryl groups and aryl groups of aryloxy can be either carbocyclic aryl or heterocyclic aryl; carbocyclic aryl groups have a total of 6-20 carbon atoms, including carbon atoms of substituents; heterocyclic aryl groups have a total of 5-20 carbon atoms, including carbon atoms of substituents; carboalkoxy groups are alkyl esters of a carboxylic acid wherein alkyl groups are as defined above; each alkyl, aryl, alkoxy, aryloxy, benzo, and carboalkoxy, independently, may be unsubstituted or substituted with one or more substituent; alkyl substituents are halo, hydroxyl, amino, or aryl; aryl substituents are halo, hydroxyl, amino, alkyl, aryl, nitro, or carboxyl; and halo substituents are fluoro or chloro; and n is 0, 1, 2, 3, or 4.