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:
Aug. 11, 2015
Filed:
Aug. 25, 2010
Applicants:
Manuela Franzen, Morel, CH;
Christian Noti, Glis, CH;
Inventors:
Manuela Franzen, Morel, CH;
Christian Noti, Glis, CH;
Assignee:
Other;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07D 261/20 (2006.01); C07H 1/00 (2006.01); C07D 265/34 (2006.01);
U.S. Cl.
CPC ...
C07D 265/34 (2013.01);
Abstract
Enantiomerically enriched (1 S,4R)-2-oxa-3-azabicyclo[2.2.1]hept-5-ene of formula wherein PG1 is an amino-protective group, are prepared from cyclopentadiene via hetero-Diels-Alder cycloaddition with protected 1-C-nitroso-β-D-ribofuranosyl halides of formula wherein X is a halogen atom selected from fluorine, chlorine, bromine and iodine, PG2 is a hydroxyl-protective group and PG3 is a 1,2-diol-protective group.