Complex of gadolinium and a chelating ligand derived of a diastereoisomerically enriched PCTA and synthesis method
US11426470B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Aug 9, 2021 |
| Grant date | Aug 30, 2022 |
| Priority date | — |
| Expiry date | Aug 9, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F5/003
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention relates to a complex of formula (II) constituted of at least 80% of a diastereoisomeric excess comprising a mixture of isomers II-RRR and II-SSS of formulae:The present invention also relates to a process for preparing said complex of formula (II), and also to two synthetic intermediates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.