Synthesis of an Estradiol Derivative with an Adenosine-phosphate Mimic Linked at Position 16β

We describe the synthesis and characterization of three compounds targeting the enzyme 17β-hydroxysteroid dehydrogenase type 1. The first one is a 4-aminobenzoyl-phenylacetic acid derivative designed as a mimic of adenosine-phosphate, the second one is an estradiol derivative having a decyl side chain at position 16β, and the third one is a hybrid compound with the adenosine-phosphate mimic covalently linked to the C16-estradiol side chain. Judicious use of key reactions such as Claisen rearrangement, microwave Grignard alkylation, selective TEMPO oxidation and cross metathesis has been required to achieve these targeted molecules.