Patent ID: 7879885

Claim:
A compound of formula I: or a pharmaceutically acceptable salt, stereoisomer, enantiomer, or tautomer thereof, wherein: ring A is optionally substituted and is each R 1 and R 2 is independently H, alkyl, or fluoroalkyl; R 3 is H, alkyl, fluoroalkyl, aralkyl, carbocyclylalkyl, heterocyclyl, carbocyclyl, heterocyclylalkyl, aryl, heteroaryl, heteroaralkyl, —C(O)R, —OR, —(CH 2 ) 1-6 OR, —(CH 2 ) 1-6 N(R) 2 , —N(R) 2 , or —C(H)(OR)R; R 4 is H, alkyl, fluoroalkyl, —CO 2 R, —CON(R) 2 , carbocyclyl, carbocyclylalkyl, heteroaryl, or heterocyclyl; R 5 is —OR 7 or —NR 8 R 9 ; R 6 is —C(O)R, —C(S)R, —C═C—C(O)R, —SR, —S—W—OR 7 , or Y; R 7 is R o , —C(O)R, —C(O)N(R) 2 , —C(O)OR, —(CH 2 ) 1-6 —C(O)R, —PO 3 M x , —P(O)(alkyl)OM′, —(PO 3 ) 2 M y , carbocyclyl, aryl, heterocyclyl, heteroaryl, carbocyclylalkyl, aralkyl, heterocyclylalkyl, or heteroaralkyl; x is 1 or 2; y is 1, 2 or 3; each M is independently H, Li, Na, K, Mg, Ca, Mn, Co, Ni, Zn, or alkyl; M′ is H, Li, Na, K, or alkyl; R 8 is H or alkyl; R 9 is H, alkyl, —C(O)R, —C(O)N(R) 2 , —C(O)OR, —SO 2 R, —SO 2 N(R) 2 , carbocyclyl, aryl, heterocyclyl, heteroaryl, carbocyclylalkyl, aralkyl, heterocyclylalkyl, or heteroaralkyl; each R a and R b is independently H, OR o , alkyl, or fluoroalkyl; each R c and R d is independently H, alkyl, or fluoroalkyl; n is 0-4; W is alkylene, arylene, heteroarylene, carbocyclylene, or heterocyclylene; R o is H or alkyl; and R is R o , carbocyclyl, aryl, heterocyclyl, heteroaryl, carbocyclylalkyl, aralkyl, heterocyclylalkyl, or heteroaralkyl.