1.1.1.393 12alpha-hydroxy-3-oxo-5beta-cholan-24-oic acid + NADPH + H+ - 1.1.1.393 3,7,12-trioxo-5beta-cholan-24-oic acid + NADPH + H+ - 1.1.1.393 3beta,12alpha-dihydroxy-5beta-cholan-24-oic acid + NADP+ -