Process for preparing ketocholanates

Details Process for preparing ketocholanates Process for preparing ketocholanates

1988-03-14

1990-04-17

Rose, Shep K.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2603974, 2603975, 260687R, 514169, C07J 1100, A61K 3156

Patent

active

049178288

ABSTRACT:
A process for preparing ketocholanate(s) comprises oxidizing cholanic acid compound(s), such as alkyl 3.alpha.-alkoxycarbonyloxy-7.alpha.,12.alpha.- dihydroxycholanates or alkyl 3.alpha.-acyloxy-7.alpha.,12.alpha.-dihydroxycholanates, with an alkali metal salt of an oxo acid of halogen in the presence of a cerium compound. Ketocholanate(s) such as alkyl 3.alpha.-alkoxycarbonyloxy-7,12-dioxocholanataes, alkyl 3.alpha.-alkoxycarbonyloxy- 7-oxo-12.alpha.-hydroxycholanates, alkyl 3.alpha.-acyloxy-7,12-dioxocholanates, alkyl 3.alpha.-alkoxycarbonyloxy-12- oxocholantes, alkyl 3.alpha.-acyloxy-7-oxo-12.alpha.-hydroxycholanates and mixtures thereof are thus produced.

REFERENCES:
Chem. Abstracts 90(9): 72386 (2/26/79).
Chem. Abstracts 89(13): 110128 (9/25/78).
Chem. Abstracts 92(7): 59113 and 59114 (2/18/80).

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