Novel progesterone receptor modulators: 4-aryl-phenylsulfonamides

Area of Science:

• Medicinal Chemistry
• Pharmacology
• Drug Discovery

Background:

• Development of novel small molecules targeting the progesterone receptor is crucial for various therapeutic applications.
• The 4-aryl-phenylsulfonamide scaffold represents a promising structural class for progesterone receptor modulators.
• Early-stage drug development requires careful assessment of compound safety, including genotoxicity.

Purpose of the Study:

• To synthesize and characterize a new series of 4-aryl-phenylsulfonamide-based progesterone receptor modulators.
• To address and resolve genotoxicity concerns identified in advanced intermediates.
• To evaluate the in vivo pharmacokinetic and pharmacodynamic properties of lead compounds in a relevant animal model.

Main Methods:

• Chemical synthesis of novel 4-aryl-phenylsulfonamide derivatives.
• Genotoxicity assessment using a non-Good Laboratory Practice (GLP) Ames assay with metabolic activation.
• Pharmacokinetic and pharmacodynamic studies in rhesus monkeys following oral administration.

Main Results:

• Discovery of potent progesterone receptor modulators with favorable initial properties.
• Identification and resolution of a genotoxic impurity in an advanced synthetic intermediate.
• Successful identification of lead compounds demonstrating oral efficacy and suitable pharmacokinetic profiles in rhesus monkeys.

Conclusions:

• The 4-aryl-phenylsulfonamide scaffold can yield effective progesterone receptor modulators.
• Overcoming intermediate genotoxicity is critical for advancing drug candidates.
• The identified lead compounds warrant further investigation for therapeutic potential.