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:
Dec. 07, 2010
Filed:
Jul. 03, 2007
Masumi Taki, Okayama, JP;
Masahiko Sisido, Okayama, JP;
Masumi Taki, Okayama, JP;
Masahiko Sisido, Okayama, JP;
National University Corporation Okayama University, Okayama, JP;
Abstract
The present invention provides a fluorescent amino acid derivative which can be synthesized by simple steps, can be excited particularly by a blue laser ray region of visible light, and has an improved light stability. These objects can be achieved by a fluorescent amino acid derivative which is an acridone derivative substituted with an amino acid to comprise an electrophilic substituent group between the amino acid and the acridone derivative. Instead of a conventional strategy that aminophenylalanine is used as a starting material to form a fluorescent group through a coupling reaction and an intramolecular cyclization reaction, a fluorescent acridone derivative is used as a starting material to furnish the material to a reactive group by a position-specific electrophilic substitution reaction, and then the acridone derivative having the reactive group is allowed to couple with an amino acid derivative.