| 摘要 |
The present invention provides a method of modulating TGF-beta activity in a subject. Methods of the present invention comprise administering to the subject an effective amount of a compound of the formula: or a salt, prodrug, tautomer, hydrate, solvate, or stereoisomer thereof, wherein a is an integer from 0 to 4; each R1 is independently hydroxy, alkoxy, halide, alkyl, cyano, nitro, amino, monoalkylamino, dialkylamino, or carboxy; R2 is aryl, cycloalkyl, alkenyl, or alkyl, each of which is optionally substituted; each of X1 and X2 is independently O, S or NR3, wherein R3 is hydrogen or alkyl; X3 is hydrogen, alkoxy, alkyl, hydroxy, halide, amino, monoalkylamino, or dialkylamino; and X4 is alkoxy, hydroxy, halide, amino, monoalkylamino, or dialkylamino.
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