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NMR Evidence of a Long Exchange Lifetime for the Coordinated Water in Ln(III)-Bis(methyl amide)-DTPA Complexes (Ln = Gd, Dy)
The water proton longitudinal relaxation rate for Gd-BMA-DTPA was studied at various temperatures and under varied magnetic fields. It was found that a correlation exists between the residenceExpand
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Thermodynamic and structural properties of Gd3+ complexes with functionalized macrocyclic ligands based upon 1,4,7,10-tetraazacyclododecane
The co-ordination properties toward Na+, Ca2+, Zn2+, Cu2+ and Gd3+ of six ligands containing pendant functionalities attached to the common 1,4,7,10-tetraazacyclododecane macrocyclic ring have beenExpand
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Interaction of cyclodextrins (cyclomalto-oligosaccharides) with glycolipids: n.m.r. studies of aqueous systems of cyclo-maltohexaose and alkyl glycosides
Abstract The interaction of cyclomaltohexaose ( a -cyclodextrin, a CD) with alkyl glycosides (AG) in solution in D 2 O was investigated by n.m.r. spectroscopy. a CD induced significant shifts of 1 HExpand
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The structures of new lanostane triterpenes from the fruiting bodies of Hebeloma senescens.
Three new lanostane triterpenes, hebelomic acids B[4], E[5], and F[6], were isolated from the inedible mushroom Hebeloma senescens. The latter two compounds are acyl derivatives of the new triterpeneExpand
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Solution Study, Crystal Structure and Relaxivity Properties of a Gd3+ Complex with an Uncharged Macrocyclic Ligand Bearing Four Amidic Side Arms
Equilibrium data on the interaction of DTMA [(DTMA = DOTA tetrakis(methylammide)] with Gd3+ in aqueous solution, properties of the complexes formed in the pH range 0.6–11.8, water proton relaxationExpand
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Gd(III) complexes of poly(hydroxymethyl)substituted derivatives of 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid
Abstract Gd(III) complexes of 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid bearing two and four hydroxymethyl moieties on the cyclen ring were prepared to be studied as low toxicity MRIExpand
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Highly regioselective synthesis of 1,7-diprotected 1,4,7,10-tetraazacyclododecane derivatives
Reaction of dimethylformamicle diethyl acetal with monoalkylated 1,4,7,10-tetraazacyclododecane derivatives 3, followed by hydrolysis of the tricyclic intermediates 4, selectively affordsExpand
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I lubrificante di sintesi derivati da fonti rinnovabili
On compare les proprietes lubrifiantes d'esters de telomeres, dimeres, huiles naturelles interesterifiees et huiles synthetiques avec celles de glycerides naturels