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:
Nov. 05, 2013
Filed:
Mar. 12, 2013
Daiichi Sankyo Co., Ltd., Tokyo, JP;
Daiichi Sankyo Company, Limited, Tokyo, JP;
Abstract
Methods for manufacturing neuraminic acid compounds and synthetic intermediates of neuraminic acid compounds, including a method for manufacturing a compound represented by wherein Rrepresents a C-Calkyl, Rrepresents a C-Calkyl, Rand Rrepresent a hydrogen atom, a C-Calkyl or a phenyl, or Rand Rtogether form a tetramethylene, a pentamethylene or an oxo, and Ac represents an acetyl, comprising reacting a compound represented by wherein Rrepresents a C-Calkyl, Rrepresents a C-Calkyl, Rand Rrepresent a hydrogen atom, a C-Calkyl or a phenyl, or Rand Rtogether form a tetramethylene, a pentamethylene or an oxo, with trimethylsilyl azide in the presence of a Lewis acid.