A compound represented by or a pharmaceutically acceptable salt and/or stereoisomer thereof, wherein q is 1, 2 or 3 and when q is 2 or 3: R 1 is independently selected from the group consisting of H, -C 1 -C 6 alkyl, -C -C 1 -C 6 alkyl, and -S w -C 1 -C 6 alkyl, wherein C 1 -C 6 alkyl is optionally substituted by one, two or three substituents each independently selected from R P; w is 0, 1, or 2; R 6 is not present; m is 0; R 3 is H; R P is independently, for each occurrence, selected from the group consisting of -C NR a R b, -NR a R b, hydroxyl, -SH, and halogen; R a and R b are each independently, for each occurrence, selected from the group consisting of H, -C 1 -C 3 alkyl, phenyl, and benzyl, wherein each C 1 -C 3 alkyl, phenyl, and benzyl is optionally substituted by one, two or three substituents each independently selected from the group consisting of hydroxyl, C 1 -C 3 alkyl, and halogen, and when q is 1: R 1 is independently selected from the group consisting of -C -C 1 -C 6 alkyl and -S w -C 1 -C 6 alkyl, wherein C 1 -C 6 alkyl is optionally substituted by one, two or three substituents each independently selected from R P; w is 0, 1, or 2; R 6 is not present; m is 0; R 3 is H; R P is independently, for each occurrence, selected from the group consisting of -C NR a R b, -NR a R b, hydroxyl, -SH, and halogen; and R a and R b are each independently, for each occurrence, selected from the group consisting of H, -C 1 -C 3 alkyl, phenyl, and benzyl, wherein each C 1 -C 3 alkyl, phenyl, and benzyl is optionally substituted by one, two or three substituents each independently selected from the group consisting of hydroxyl, C 1 -C 3 alkyl, and halogen. when q is 2 or 3: R 1 is independently selected from the group consisting of H, -C 1 -C 6 alkyl, -C -C 1 -C 6 alkyl, and -S w -C 1 -C 6 alkyl, wherein C 1 -C 6 alkyl is optionally substituted by one, two or three substituents each independently selected from R P; w is 0, 1, or 2; R 6 is not present; m is 0; R 3 is H; R P is independently, for each occurrence, selected from the group consisting of -C NR a R b, -NR a R b, hydroxyl, -SH, and halogen; R a and R b are each independently, for each occurrence, selected from the group consisting of H, -C 1 -C 3 alkyl, phenyl, and benzyl, wherein each C 1 -C 3 alkyl, phenyl, and benzyl is optionally substituted by one, two or three substituents each independently selected from the group consisting of hydroxyl, C 1 -C 3 alkyl, and halogen, and R 1 is independently selected from the group consisting of H, -C 1 -C 6 alkyl, -C -C 1 -C 6 alkyl, and -S w -C 1 -C 6 alkyl, wherein C 1 -C 6 alkyl is optionally substituted by one, two or three substituents each independently selected from R P; w is 0, 1, or 2; R 6 is not present; m is 0; R 3 is H; R P is independently, for each occurrence, selected from the group consisting of -C NR a R b, -NR a R b, hydroxyl, -SH, and halogen; R a and R b are each independently, for each occurrence, selected from the group consisting of H, -C 1 -C 3 alkyl, phenyl, and benzyl, wherein each C 1 -C 3 alkyl, phenyl, and benzyl is optionally substituted by one, two or three substituents each independently selected from the group consisting of hydroxyl, C 1 -C 3 alkyl, and halogen, and when q is 1: R 1 is independently selected from the group consisting of -C -C 1 -C 6 alkyl and -S w -C 1 -C 6 alkyl, wherein C 1 -C 6 alkyl is optionally substituted by one, two or three substituents each independently selected from R P; w is 0, 1, or 2; R 6 is not present; m is 0; R 3 is H; R P is independently, for each occurrence, selected from the group consisting of -C NR a R b, -NR a R b, hydroxyl, -SH, and halogen; and R a and R b are each independently, for each occurrence, selected from the group consisting of H, -C 1 -C 3 alkyl, phenyl, and benzyl, wherein each C 1 -C 3 alkyl, phenyl, and benzyl is optionally substituted by one, two or three substituents each independently selected from the group consisting of hydroxyl, C 1 -C 3 alkyl, and halogen. R 1 is independently selected from the group consisting of -C -C 1 -C 6 alkyl and -S w -C 1 -C 6 alkyl, wherein C 1 -C 6 alkyl is optionally substituted by one, two or three substituents each independently selected from R P; w is 0, 1, or 2; R 6 is not present; m is 0; R 3 is H; R P is independently, for each occurrence, selected from the group consisting of -C NR a R b, -NR a R b, hydroxyl, -SH, and halogen; and R a and R b are each independently, for each occurrence, selected from the group consisting of H, -C 1 -C 3 alkyl, phenyl, and benzyl, wherein each C 1 -C 3 alkyl, phenyl, and benzyl is optionally substituted by one, two or three substituents each independently selected from the group consisting of hydroxyl, C 1 -C 3 alkyl, and halogen.