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:
May. 13, 2008
Filed:
Aug. 08, 2002
Applicants:
Kanda Ramasamy, Aliso Viejo, CA (US);
Jean-luc Girardet, Aliso Viejo, CA (US);
Haoyun an, Carlsbad, CA (US);
Zhi Hong, Aliso Viejo, CA (US);
Robert Orr, San Clemente, CA (US);
Inventors:
Kanda Ramasamy, Aliso Viejo, CA (US);
Jean-Luc Girardet, Aliso Viejo, CA (US);
Haoyun An, Carlsbad, CA (US);
Zhi Hong, Aliso Viejo, CA (US);
Robert Orr, San Clemente, CA (US);
Assignee:
Valeant Research & Development, Costa Mesa, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 473/34 (2006.01); C07F 9/6561 (2006.01);
U.S. Cl.
CPC ...
Abstract
A hydroxyalkylated heterocyclic base is prepared by reacting a heterocyclic base with an alkylene carbonate in dimethylacetamide as a solvent, wherein the hydroxyalkylated heterocyclic base is isolated from the solvent using isopropanol or tert-butylmethylether.