Patent ID: 7157476

Claim:
A compound of formula I: or a pharmaceutically acceptable salt thereof, wherein: R 1 is R, SO 2 R, —SO 2 N(R) 2 , —C(O)R, —CO 2 R, or —CON(R) 2 ; each R is independently selected from hydrogen or an optionally substituted C 1-6 aliphatic group, or: two R groups on the same nitrogen atom are taken together with said nitrogen to form a 3–8 membered saturated, partially unsaturated, or fully unsaturated ring having 1–3 heteroatoms, in addition to said nitrogen, independently selected from nitrogen, oxygen, or sulfur; Ring A is wherein said ring is substituted with one, two or three L-R 2 groups; each R 2 is independently selected from C 1-6 aliphatic, CN, halogen, NO 2 , or Ar; each L is independently selected from a valence bond or an optionally substituted C 1-6 alkylidene chain, wherein up to two methylene units of L are optionally, and independently, replaced by —O—, —S—, —NR—, —NRC(O)—, —NRC(O)NR—, —OC(O)NR—, —C(O)—, —CO 2 —, —NRCO 2 —, —C(O)NR—, —SO 2 NR—, —NRSO 2 —, or —NRSO 2 NR—; and Ar is an optionally substituted 3–8 membered saturated, partially unsaturated, or fully unsaturated monocyclic ring having 0–4 heteroatoms independently selected from nitrogen, oxygen, or sulfur, or an 8–10 membered saturated, partially unsaturated, or fully unsaturated bicyclic ring having 0–4 hereroatoms independently selected from nitrogen, oxygen, or sulfur.