- [Gd(AAZTA)]? Derivatives with n-Alkyl Acid Side Chains Show Improved Properties for Their Application as MRI Contrast Agents**
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Herein, the synthesis and an extensive characterization of two novel Gd(AAZTA) (AAZTA=6-amino-6-methylperhydro-1,4-diazepine tetra acetic acid) derivatives functionalized with short (C2 and C4) n-alkyl acid functions are reported. Th
- Kock, Flávio Vinicius Crizóstomo,Forgács, Attila,Guidolin, Nicol,Stefania, Rachele,Vágner, Adrienn,Gianolio, Eliana,Aime, Silvio,Baranyai, Zsolt
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- PARAMAGNETIC SOLID LIPID NANOPARTICLES (PSLNS) CONTAINING METAL AMPHIPHILIC COMPLEXES FOR MRI.
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The present invention relates to paramagnetic solid lipid nanoparticles (pSLNs) comprising an amphiphilic paramagnetic metal chelating moiety selected from: a diazepine derivative of Formula I and a tetraazocyclododecane derivative of Formula (II): being said chelating moiety complexed to a paramagnetic metal ion selected from the group consisting of: Gd(III), Mn(II), Cr(III), Cu(II), Fe(III), Pr(III), Nd(III), Sm(III), Tb(III), Yb(III), Dy(III), Ho(III) and Er(III), or salts thereof. The invention further relates to the process for preparation of said solid lipid nanoparticles comprising amphiphilic complexes of paramagnetic metals (pSLNs) and to the use of pSLNs as MRI contrast agents in the diagnostic field.
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(2014/03/26)
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- FLUORESCENT SOLID LIPID NANOPARTICLES COMPOSITION AND PREPARATION THEREOF
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The present invention discloses a solid lipid nanoparticle (SLN) comprising: a) a solid lipid core comprising at least a glyceride and/or at least a fatty acid; b) a mixture of amphiphilic components forming a shell around said core a); c) an alkaline-earth complex with a compound of formula I and/or II: d) at least a fluorescent dye selected from: a cyanine fluorescent dye and /or a polyetherocyclic compound selected from: coumarin, pyrano, quinoline, pyranoquinoline, indole and pyranoindole derivates in acid form or a pharmaceutically acceptable salt thereof. These nanoparticles allow a prolonged blood circulation half-life, show enhanced photostability and improved fluorescence signal. The dye is preserved from degradation and improves the fluorescent quantum yield.
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- A new class of diazepine derivative chelating agents and complexes with paramagnetic metals as MRI contrast agents
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The present invention relates to a new class of diazepine-derivatives as chelating agents for paramagnetic metal ions, the process for their preparation, and use of such paramagnetic complexes as contrast agents, particularly suitable for Magnetic Resonance Imaging (MRI) analysis.
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- A NEW CLASS OF DIAZEPINE DERIVATIVE CHELATING AGENTS AND COMPLEXES WITH PARAMAGNETIC METALS THEREOF AS MRI CONTRAST AGENTS
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The present invention relates to a new class of diazepine-derivatives as chel ating agents for paramag netic metal ions, the process for their preparation, and use of such paramagnetic complexes as contrast agents, particularly suitable for Magnetic Resonance Imaging (MRI) analysis.
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