Process for preparing high purity ursodeoxycholic acid

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

1981-04-29

1982-06-29

Roberts, Elbert L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07J 900

Patent

active

043372066

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

REFERENCES:
patent: 4213911 (1980-07-01), Attwell et al.
patent: 4282161 (1981-08-01), Guillenetto et al.

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