SUBSTITUTED TETRACYCLINE COMPOUNDS FOR TREATMENT OF INFLAMMATORY SKIN DISORDERS

1 . A method for treating an inflammatory skin disorder in a subject, comprising administering an effective amount of a substituted tetracycline compound to said subject, wherein said substituted tetracycline compound is a compound of formula I:

wherein

X is CHC(R 13 Y′Y), CR 6 R 6 , C═CR 6′ R 6 , S, NR 6 , or O;

E is NR 7d R 7e , OR 7f , or (CH 2 ) 0-1 C(′W′)WR 7g ;

W is O, S, NR 7h , or CR 7i R 7j ;

W′is O, S, or NR 7k ;

R 2 , R 2′ , R 4′ , R4a and R 4b are each independently hydrogen, alkyl, alkenyl, alkynyl, alkoxy, alkylthio, alkylsulfinyl, alkylsulfonyl, alkylamino, arylalkyl, aryl, heterocyclic, heteroaromatic or a prodrug moiety;

R 3 , R 10 , R 11 and R 12 are each hydrogen or a prodrug moiety;

R 4 is NR 4a R 4b , alkyl, alkenyl, alkynyl, hydroxyl, halogen, or hydrogen;

R 5 and R 5′ are each independently hydroxyl, hydrogen, thiol, alkanoyl, aroyl, alkaroyl, aryl, heteroaromatic, alkyl, alkenyl, alkynyl, alkoxy, alkylthio, alkylsulfinyl, alkylsulfonyl, alkylamino, arylalkyl, alkyl carbonyloxy, or aryl carbonyloxy;

R 6 and R 6′ are each independently hydrogen, methylene, absent, hydroxyl, halogen, thiol, alkyl, alkenyl, alkynyl, aryl, alkoxy, alkylthio, alkylsulfinyl, alkylsulfonyl, alkylamino, or an arylalkyl;

R 7a , R 7b , R 7c , R 7d , R 7e , R 7f , R 7g , R 7h , R 7i , R 7k and R 7j are each independently hydrogen, allyl, alkyl, alkenyl, alkynyl, hydroxyl, alkoxy, alkylthio, alkylsulfinyl, alkylsulfonyl, amino, alkylamino, aminoalkyl, acyl, aryl, arylalkyl, alkylcarbonyloxy, or arylcarbonyloxy, or R 7c and R 7d or R 7c and R 7f are linked to form a ring;

R 8 is hydrogen, hydroxyl, halogen, thiol, alkyl, alkenyl, alkynyl, aryl, alkoxy, alkylthio, alkylsulfinyl, alkylsulfonyl, alkylamino, or an arylalkyl;

R 9 is hydrogen, nitro, alkyl, alkenyl, alkynyl, aryl, alkoxy, alkylthio, alkylsulfinyl, alkylsulfonyl, arylalkyl, amino, aminoalkyl, amido, arylalkenyl, arylalkynyl, thionitroso, or —(CH 2 ) 0-3 (NR 9c ) 0-1 C(═Z′)ZR 9a ;

Z is CR 9d R 9e , S, NR 9b or O;

Z′is O, S, or NR 9f ;

R 9a , R 9b , R 9c , R 9d , R 9e and R 9f are each independently hydrogen, acyl, alkyl, alkenyl, alkynyl, alkoxy, alkylthio, alkylsulfinyl, alkylsulfonyl, alkylamino, arylalkyl, aryl, heterocyclic, heteroaromatic or a prodrug moiety;

R 13 is hydrogen, hydroxy, alkyl, alkenyl, alkynyl, alkoxy, alkylthio, alkylsulfinyl, alkylsulfonyl, alkylamino, or an arylalkyl; and

Y′ and Y are each independently hydrogen, halogen, hydroxyl, cyano, sulfhydryl, amino, amido, alkyl, alkenyl, alkynyl, alkoxy, alkylthio, alkylsulfinyl, alkylsulfonyl, alkylamino, or an arylalkyl, and pharmaceutically acceptable salts thereof; such that said inflammatory skin disorder is treated.

2 - 160 . (canceled)