Stereoselective reduction of the keto group at 7-position of a bile keto acid
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United States of America Patent
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May 30, 1989
Grant Date -
N/A
app pub date -
Jan 6, 1987
filing date -
Jan 9, 1986
priority date (Note) -
Expired
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Abstract
The keto group at the 7-position of a bile keto acid is stereoselectively reduced to a beta-hydroxy group with hydrogen in the presence of nickel, a base (the quantity of which is at least 0.3 mole for each mole of keto acid), and an alcohol having from 3 to 10 C atoms, selected from the group consisting of secondary alcohols, tertiary alcohols and beta-branched alcohols.
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