{Reference Type}: Journal Article {Title}: Practical synthesis of chenodeoxycholic acid from phocaecholic acid. {Author}: He Z;Liang N;Zou S;Yu F;Zeng Y;Chen X;Wang Y;Zhou L;Wang Q; {Journal}: Steroids {Volume}: 209 {Issue}: 0 {Year}: 2024 Sep 10 {Factor}: 2.76 {DOI}: 10.1016/j.steroids.2024.109470 {Abstract}: In this study, we developed an effective method for the large-scale synthesis of chenodeoxycholic acid (CDCA) from phocaecholic acid (PhCA). A high total yield of up to 72 % was obtained via five steps including methyl esterification, Ts-protection, bromination, reduction, and hydrolysis. The structures of the intermediates were confirmed by 1H NMR (Nuclear Magnetic Resonance), 13C NMR, HRMS (High Resolution Mass Spectrometry), and IR (Infrared Spectroscopy) spectroscopies. This method offers a new and practical approach to the synthesizing of CDCA.