The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 23, 1982
Filed:
Jul. 11, 1980
Applicant:
Inventors:
Antonio Bonaldi, Schilpario, IT;
Egidio Molinari, Erba, IT;
Assignee:
Blasinachim S.p.A, Milan, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07J / ;
U.S. Cl.
CPC ...
2603971 ;
Abstract
A mixture of ursodeoxycholic acid and of chenodeoxycholic acid as well as of their salts and esters is reacted with a silylating agent in a suitable anhydrous organic solvent; the corresponding silyl-derivatives thus obtained are separated by crystallization and pure ursodeoxycholic acid is recovered from the corresponding silyl-derivatives in the usual manner.