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:
Apr. 26, 2005
Filed:
Mar. 15, 2000
Applicants:
Colin Bernard Reese, London, GB;
Quanlai Song, San Marcos, CA (US);
Inventors:
Colin Bernard Reese, London, GB;
Quanlai Song, San Marcos, CA (US);
Assignee:
Avecia Limited, Manchester, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07H019/00 ; C07H019/048 ;
U.S. Cl.
CPC ...
Abstract
A process for the preparation of a compound of formula (1):is provided, which comprises the reaction a compound of formula (2):with a compound of formula Al(OR)under substantially anhydrous conditions. X, and Xare each independently H or a protecting group, B is a base; R is an alkyl, alkoxyalkyl, alkenyl or alkynyl group, each of which may be optionally substituted, and L is a leaving group.