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. 14, 1997
Filed:
Oct. 31, 1996
Jean-Manuel Mas, Villeurbanne, FR;
Viviane Massonneau, Ecully, FR;
Rhone-Poulenc Rorer, S.A., Antony, FR;
Abstract
Disclosed is a compound of formula VII: ##STR1## where Ar represents an optionally substituted phenyl or .alpha.- or .beta.-naphthyl radical; R.sub.3 represents hydrogen, a C.sub.1-4 alkyl radical, a C.sub.2-4 alkenyl radical, an aralkyl radical, or an aryl radical; and R.sub.4 represents hydrogen, a C.sub.1-4 alkyl radical, a C.sub.2-4 alkenyl radical, an aralkyl radical, or an aryl radical; or alternatively R.sub.3 and R.sub.4, together with the carbon atom to which they are linked, form a 4- to 7-membered ring; and R.sub.5 represents an C.sub.1-4 alkyl radical substituted with at least one chlorine atom. The compound of formula VI may be used to manufacture a compound of formula VIII: ##STR2## where Ar, R.sub.3, R.sub.4 and R.sub.5 are defined above; G.sub.1 represents a group protecting the hydroxyl function; and where appropriate, G.sub.2 represents a group protecting the hydroxyl function.