Abstract

A series of aminomethylpyrazoles were prepared and evaluated using cell-based Smoothened β-lactamase reporter assay and Smoothened binding assay. Potent Smoothened antagonists 10k and 10l were found to inhibit hair growth in vivo in the C3H/HeN mouse hair growth model. The more selective compound 10l was tested negative in the 3T3 NRU assay, indicating a low risk for causing photo-irritation and was efficacious using the C3H/HeN mouse hair growth model although it was slightly less efficacious than that of the reference compound eflornithine ( 7).

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