Boron-containing small molecules

A compound, or a salt thereof, having a structure which is

• wherein R5 is H or halogen;
• one of Ra2, Ra3, Ra5 and Ra6 is halogen or —NHC(O)OR30 or alkyl substituted with —C(O)OR30 or alkyl substituted with —S(O)2R30 or alkyl substituted with halogen or alkyl substituted with hydroxy or alkyl substituted with cyano or alkyl substituted with —NHC(O)OR30 or alkyl substituted with unsubstituted oxazolyl or alkyl substituted with alkyl substituted oxazolyl or alkyl substituted with unsubstituted oxadiazolyl or alkyl substituted with alkyl substituted oxadiazolyl or alkyl substituted with —C(O)NHR35,
• wherein R30 is unsubstituted alkyl and R35 is unsubstituted alkyl or unsubstituted cycloalkyl,
• and the remaining members of Ra2, Ra3, Ra5 and Ra6 are H, R10 and R11 are independently selected from the group consisting of H, substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted aryl, and substituted or unsubstituted heteroaryl.