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. 17, 2010
Filed:
May. 02, 2007
Douglas Grotjahn, San Diego, CA (US);
Erik Wiener, Pittsburgh, PA (US);
Douglas Grotjahn, San Diego, CA (US);
Erik Wiener, Pittsburgh, PA (US);
San Diego State University (SDSU) Foundation, San Diego, CA (US);
Abstract
The present invention relates to a method for preparing a bifunctional chelator for lanthanide. The method comprises the steps of providing a starting material which has an amino and carboxyl group; protecting the amino with an amino protecting group and the carboxyl with a carboxyl protecting group to produce a protected compound; reacting the protected compound with cyclen to generate a monoalkylated cyclen; reacting the monoalkylated cyclone with an activated compound to generated tetra-alkylated cyclone; removing the amino protecting group with a first protecting group removal reagent; and removing the carboxyl protecting groups with a second protecting group removal reagent to yield a bifunctional chelator having three more carboxyl groups and one or more amino groups.