Process for production of chenodeoxycholic acid and novel interm

Details Process for production of chenodeoxycholic acid and novel interm Process for production of chenodeoxycholic acid and novel interm

1989-02-17

1990-01-23

Lipovsky, Joseph A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07J 100

Patent

active

048956791

ABSTRACT:
Novel intermediates useful in the synthesis of chenodeoxycholic acid, the intermediates being of the formula: ##STR1## wherein --X is an electron withdrawing group, n is an integer equal to zero or one, and --Y is a halogen.
A process for producing such novel intermediates from 5.beta.-cholanic acid-3.alpha., 7.alpha., 12.alpha.-triol methyl ester is carried out without using highly toxic and carcinogenic compounds such as dichromates and chromium trioxide.

REFERENCES:
J. Organic Chemistry; vol. 24; pp. 1367-1368, (Sep. 1959); Sato, et al.

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