Methods of use of cyclopamine analogs
The invention provides methods for treating various conditions using derivatives of cyclopamine having the following formula:
1. A method for treating a medulloblastoma, the method comprising administering to a subject an effective amount of a compound having the formula:
or a pharmaceutically acceptable salt thereof;
wherein R 1 is H, alkyl, —OR, amino, sulfonamido, sulfamido, —OC(O)R 5 , —N(R 5 )C(O)R 5 , or a sugar;
R 2 is H, alkyl, alkenyl, alkynyl, aryl, cycloalkyl, nitrile, or heterocycloalkyl;
or R 1 and R 2 taken together form ═O, ═S, ═N(OR), ═N(R), ═N(NR 2 ), or ═C(R) 2 ;
R 3 is H, alkyl, alkenyl, or alkynyl;
R 4 is H, alkyl, alkenyl, alkynyl, aryl, cycloalkyl, heterocycloalkyl, aralkyl, heteroaryl, heteroaralkyl, haloalkyl, —OR 5 , —C(O)R 5 , —CO 2 R 5 , —SO 2 R 5 , —C(O)N(R 5 )(R 5 ), —[C(R) 2 ] q —R 5 , —[(W)—N(R)C(O)] q R 5 , —[(W)—C(O)] q R 5 , —[(W)—C(O)O] q R 5 , —[(W)—OC(O)] q R 5 , —[(W)—SO 2 ] q R 5 , —[(W)—N(R 5 )SO 2 ] q R 5 , —[(W)—C(O)N(R 5 )] q R 5 , —[(W)—O] q R 5 , —[(W)—N(R)] q R 5 , —W—NR 5 3 + X − or —[(W)—S] q R 5 ;
wherein each W is, independently, a diradical;
each q is independently for each occurrence 1, 2, 3, 4, 5, or 6;
X − is a halide;
each R is independently, H, alkyl, alkenyl, alkynyl, aryl, cycloalkyl or aralkyl;
each R 5 is, independently, H, alkyl, alkenyl, alkynyl, aryl, cycloalkyl, heterocycloalkyl, aralkyl, heteroaryl, heteroaralkyl or —[C(R) 2 ] p —R 6 ; wherein p is 0-6; or any two occurrences of R 5 on the same substituent can be taken together to form a 4-8 membered optionally substituted ring which contains 0-3 heteroatoms selected from N, O, S, and P; and
each R 6 is independently hydroxyl, —N(R)COR, —N(R)C(O)OR, —N(R)SO 2 (R), —C(O)N(R) 2 , —OC(O)N(R)(R), —SO 2 N(R)(R), —N(R)(R), —COOR, —C(O)N(OH)(R), —OS(O) 2 OR, —S(O) 2 OR, —OP(O)(OR)(OR), —NP(O)(OR)(OR), or —P(O)(OR)(OR).
2. The method of claim 1 , wherein when R 2 , R 3 , and R 4 are H; R 1 is not hydroxyl or a sugar; and when R 4 is hydroxyl, then R 1 is not a sugar or hydroxyl; and when R 4 is hydroxyl, then R 1 and R 2 together are not C═O.
3. The method of claim 1 , wherein R 1 is sulfonamido.
4. The method of claim 1 , wherein the compound is administered orally.
5. The method of claim 1 , wherein the compound is administered intravenously.
6. The method of claim 1 , wherein the compound is administered topically.
7. The method of claim 1 , wherein the compound is selected from the group consisting of:
or a pharmaceutically acceptable salt thereof.