859-97-2Relevant articles and documents
Preparation method of ursodeoxycholic acid
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Paragraph 0023, (2020/06/24)
The invention discloses a preparation method of ursodesoxycholic acid, which comprises the following steps:using chenodeoxycholic acid as a raw material, oxidizing with sodium hypochlorite to obtain an intermediate 3alpha-hydroxy-7beta-carbonyl-5 beta-cholanic acid, carrying out hydrogenation reduction hydrogenation by using Raney nickel as a catalyst to obtain an ursodesoxycholic acid crude product, and carrying out triethylamine salifying refining to obtain the ursodesodesoxycholic acid bulk drug. The preparation method of ursodesoxycholic acid is stable and reliable in raw material source,high in reaction selectivity, easy in finished product refining, high in quality and short in process route; the method has the advantages of short synthesis steps, mild reaction conditions and cleanprocess, and is suitable for industrial production.
Regioselective microbial oxidation of bile acids
Fantin, Giancarlo,Ferrarini, Sabina,Medici, Alessandro,Pedrini, Paola,Poli, Silvia
, p. 1937 - 1942 (2007/10/03)
High regioselectivity in the microbial oxidation of C7, C3 and C12 hydroxyl groups of cholic, chenodeoxycholic, deoxycholic and hyocholic acids 1-4 is reported. The tested microrganisms have been isolated from 50 environmental samples withdrawed from an industry that extracts and purify bile acids.