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.

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