Disclosed are compounds of formulae (I), (II), and (II)I: and pharmaceutically acceptable salts thereof, wherein the variables, R, R
1
, R
2
, R
3
, R
101
, L, D, Q, Y, X, and Z are defined herein. These compounds are useful for treating Gram-negative bacteria infections.
Disclosed are compounds of formulae (I), (II), and (II)I: and pharmaceutically acceptable salts thereof, wherein the variables, R, R
1
, R
2
, R
3
, R
101
, L, D, Q, Y, X, and Z are defined herein. These compounds are useful for treating Gram-negative bacteria infections.