Synthesis of 19-Hydroxylated Bile Acids and Identification of 3.ALPHA.,7.ALPHA.,12.ALPHA.,19-Tetrahydroxy-5.BETA.-cholan-24-oic Acid in Human Neonatal Urine.
Synthesis of 19-Hydroxylated Bile Acids and Identification of 3.ALPHA.,7.ALPHA.,12.ALPHA.,19-Tetrahydroxy-5.BETA.-cholan-24-oic Acid in Human Neonatal Urine.
The synthesis of 19-hydroxylated bile acids (3α, 19-dihydroxy-, 3α, 7α, 19-trihydroxy-, 3α, 12α, 19-trihydroxy-and 3α, 7α, 12α, 19-tetrahydroxy-5β-cholan-24-oic acids) was described. These synthesized 19-hydroxylated bile acids were used as standard samples for the analysis of bile acids in human urine by gas chromatography-mass spectrometry. 3α, 7α, 12α, 19-Tetrahydroxy-5β-cholan-24-oic acid was identified in neonatal urines (0.1-1.5 μg/ml and 1.5-7% of total bile acids).