Steroid sulfatase (STS) is responsible for the hydrolysis of biologically inactive sulfated steroids into their active un-sulfated forms and promotes the growth of various hormone-dependent cancers (e.g., breast cancer). Therefore, the STS enzyme is a promising therapeutic target for the treatment of steroid-sensitive cancers. Herein, we report the synthesis and biological evaluation of sulfamate analogs as potential STS inhibitors based on N-acylated tyramines that contain C-F bonds. The inhibitory effects of the analogs were tested using STS isolated from human placenta. Of the analogs tested, 4-(2-perfluoroundecanoylaminoethyl)-phenyl sulfamate, 5r, demonstrated the greatest inhibitory effect, with an IC value of 2.18 μm (IC value of 2.13 μm for coumarin-7-O-sulfamate was used as a reference). These findings were supported by the results our computational analyses performed using molecular docking techniques.
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