DTPA monoamides for MRI

US5843399A · kind A · utility

Assignee

• SCHERING CORPORATION · US

Inventors

• Heinz Gries · Berlin, DE
• Erich Klieger · Berlin, DE
• Bernd Raduchel · Berlin, DE
• Heribert Schmitt-Willich · Berlin, DE
• Hanns-Joachim Weinmann · Berlin, DE
• Hubert Vogler · Berlin, DE
• Gabriele Schuhmann-Giampieri · Berlin, DE
• Jurgen Conrad · Berlin, DE

Key dates

• Filing date: Jun 7, 1995
• Grant date: Dec 1, 1998
• Expiry date: Jun 7, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F15/025
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Chelate compounds of general formula I ##STR1## wherein X is a hydrogen atom and/or a metal ion equivalent of an element of atomic numbers 21-29, 31, 32, 37-40, 42-44, 49 or 57-83, and PA1 Z.sup.1, Z.sup.2, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as defined herein, as well as their salts with inorganic and/or organic bases, amino acids or amino acid amides, are valuable pharmaceutical agents, e.g., for NMR imaging.