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  • Title: A convenient synthesis of 3 beta,12 alpha-, 3 beta,7 alpha-, and 3 beta,7 beta-dihydroxy-5-cholen-24-oic acids: unusual bile acids in human biological fluids.
    Author: Tohma M, Mahara R, Takeshita H, Kurosawa T.
    Journal: Steroids; 1986; 48(5-6):331-8. PubMed ID: 3445285.
    Abstract:
    The unusual bile acids 3 beta,12 alpha- (V), 3 beta,7 alpha- (XIIIa), and 3 beta,7 beta- (XIIIb) dihydroxy-5-cholen-24-oic acids were synthesized conveniently from the 3-oxo derivatives of deoxycholic (I) and lithocholic (VI) acids, respectively, to provide authentic samples for the gas chromatography-mass spectrometric determination of these bile acids in the abnormal metabolism of bile acids.
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