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. 01, 2003
Filed:
Apr. 17, 2001
Applicant:
Inventors:
Yogesh S. Sanghvi, Encinitas, CA (US);
Krishna Misra, Allahabad, IN;
Snehlata Tripathi, Allahabad, IN;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07H 1/916 ; C07H 1/900 ; C07H 2/100 ; C07H 1/922 ;
U.S. Cl.
CPC ...
C07H 1/916 ; C07H 1/900 ; C07H 2/100 ; C07H 1/922 ;
Abstract
Methods for selectively protecting the exocyclic amino function of a purine nucleoside are provided using activating agents to effect acylation at the exocyclic amino site. Methods are also provided for recycling polymer bound coupling supports from the reaction mixtures produced upon N-acylation.