Patent ID: 6884791

Claim:
A compound of formula: or a pharmaceutically acceptable salt thereof, wherein R 1 is R 3 is —H or —CO 2 R 9 , wherein R 9 is —C 1 -C 3 -alkyl; R 6 is —L 1 —A—(L 2 —B) 5 , wherein L 1 is C 0 -C 3 -alkyl optionally mono- to per -halogenated; A is C 3 -C 6 -cycloalkyl, aryl, or heteroaryl; L 2 is a covalent bond or (C 0 -C 3 -hydrocarbyl)-X 1 —(C 0 -C 3 -hydrocarbyl), wherein X 1 is —C(O)—, —NH—, —NH—, —NH—C(O)—, —C(O)—NH—, or heteroaryl; B is —H, halo, C 3 -C 6 -cycloalkyl, aryl, or heteroaryl; and S is 0 or 1; wherein when s is 0, (L 2 B) S is —H or halo, and wherein A and B are independently optionally substituted with 1-3 moieties independently selected from the group consisting of halo, —NO 2 , —CO 2 H, —CN, —C(O)—NH 2 , —SO 2 —NH 2 , or hydrocarbyl-Y—(C 1 -C 3 -hydrocarbyl) wherein Y is a covalent bond, —O—C(O)—, —C(O)—, —O—, —S—, —SO 2 —, —C(O)—NH—, or —NH—C(O)—; and each alkyl moiety is optionally mono- to per-halogenated.