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:
Oct. 10, 1995
Filed:
Mar. 06, 1995
Applicant:
Inventors:
Angelo Bedeschi, Milan, IT;
Franco Zarini, Settimo Milanese, IT;
Assignee:
Farmitalia Carlo Erba S.r.l., Milan, IT;
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
540310 ; 540312 ;
Abstract
The present invention relates the removal of t-butyldimethylsilyl protecting groups in the preparation of penems which are useful antibiotics. The invention provides a process for preparing a compound of the formula I: ##STR1## wherein R is a free or protected hydroxy or amino group or an alkoxy, acyloxy or an optionally substituted carbamoyloxy group, and R.sub.1 is selected from: