Process for preparing high purity ursodeoxycholic acid

Details Process for preparing high purity ursodeoxycholic acid Process for preparing high purity ursodeoxycholic acid

C - Chemistry, Metallurgy

07

J

260/62

C07J 9/00 (2006.01) C07J 51/00 (2006.01)

Patent

CA 1150239

ABSTRACT A process for preparing 3?, 7.beta.-dihydroxy-cholanic acid (I) from 3?, 7?-dihydroxy-.DELTA.11-cholenic acid. This starting substance is converted by oxidation and successive reduction into 3?, 7.beta.-dihydroxy-.DELTA.11-cholenic acid, which is separated in the form of the tris-trimethylsilyl derivative of high purity. The product (I) is obtained by hydrogneating and hydrolysing the trisilyl derivative.

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