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:
Jul. 06, 2010
Filed:
Apr. 18, 2005
Yutaka Ishii, Osaka, JP;
Ryosuke Fujimoto, Osaka, JP;
Yutaka Ishii, Osaka, JP;
Ryosuke Fujimoto, Osaka, JP;
Daiso Co., Ltd., Osaka, JP;
Abstract
A process for the preparation of a nonnatural amino acid represented by the following formula (C): which is characterized by reacting a compound represented by the following formula (A1), a compound represented by the following formula (A2) and a compound represented by the following formula (A3) (step 1): to form a compound represented by the following formula (B): and then subjecting the compound (B) to deprotection of protective groups of carboxyl groups and to decarboxylation (wherein Xand Xare a leaving group, Ris an aromatic group, an unsaturated heterocyclic group, or RCO group, Rand Rare a protected carboxyl group, Ris a protected amino group, Ris hydrogen atom, an aliphatic hydrocarbon group, an aromatic group, or a heterocyclic group, Ris an aromatic group or an unsaturated heterocyclic group, etc., and p, q and r are an integer of 0 to 10).