Patent ID: 7354919

Claim:
A compound of formula I: or a pharmaceutically acceptable salt thereof, wherein: Ht is pyrrol-3-yl having R 3 and QR 4 substituents; A-B is Nâ€”O or Oâ€”N; R 1 is hydrogen or â€”NHR; T is a valence bond; Q is â€”C(O) or â€”SO 2 â€”; each R is independently selected from hydrogen or an optionally substituted aliphatic group having one to six carbons; R 2 is an aryl group substituted with up to three R 8 substituents; R 3 is hydrogen; R 4 is â€”R 6 or â€”NHR 6 ; each R 6 is independently selected from â€”(CH 2 ) y R 7 ; y is 0-6; each R 7 is an optionally substituted group independently selected from aryl, heteroaryl, or heterocyclyl; each R 8 is independently selected from halogen, â€”Râ€², or â€”ORâ€²; wherein each Râ€² is independently selected from hydrogen, or an optionally substituted C 1-12 aliphatic.