Stereoselective synthesis of the hormonally active (25S)-Δ7-dafachronic acid, (25S)-Δ4-dafachronic acid, (25S)-dafachronic acid, and (25S)-cholestenoic acid

Abstract
We report a stereoselective synthesis of the (25S)-cholestenoic-26-acids which are highly efficient ligands for the hormonal receptor DAF-12 in Caenorhabditis elegans.