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:
Sep. 08, 2015
Filed:
Nov. 18, 2014
Applicant:
Mallinckrodt Llc, Hazelwood, MO (US);
Inventors:
John Brandt, St. Charles, MO (US);
Subo Liao, Ballwin, MO (US);
Edmund C. Hudson, Clayton, MO (US);
Esa T. Jarvi, Ballwin, MO (US);
Peter X. Wang, Creve Coeur, MO (US);
Michael Schaefer, St. Louis, MO (US);
Assignee:
Mallinckrodt LLC, Hazelwood, unknown;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 489/02 (2006.01); C07D 489/12 (2006.01);
U.S. Cl.
CPC ...
C07D 489/02 (2013.01);
Abstract
The present invention provides processes for preparing normorphinans from N-substituted morphinans. In particular, the invention provides methods for removing the N-substituent from the N-substituted morphinan to from a normorphinan carbamate, and then removing the carbamate functionality from the normorphinan carbamate to form the normorphinan.