0000000001036081
AUTHOR
D. Spinelli
Ciclodestrine borate. Sintesi, acidità e attività catalitica
Carotid plaque detection improves the predictve value of CHA2DS2-VASc score in patients with non-valvular atrial fibrilation: The ARAPACIS Study
Abstract Background and aims Vascular disease (VD), as assessed by history of myocardial infarction or peripheral artery disease or aortic plaque, increases stroke risk in atrial fibrillation (AF), and is a component of risk assessment using the CHA 2 DS 2 -VASc score. We investigated if systemic atherosclerosis as detected by ultrasound carotid plaque (CP) could improve the predictive value of the CHA 2 DS 2 -VASc score. Methods We analysed data from the ARAPACIS study, an observational study including 2027 Italian patients with non-valvular AF, in whom CP was detected using Doppler Ultrasonography. Results VD was reported in 351 (17.3%) patients while CP was detected in 16.6% patients. Ad…
The Boulton-Katritzky Reaction: A Kinetic Study of the Effect of 5-Nitrogen Substituents on the Rearrangement of Some (Z)-phenylhydrazones of 3-Benzoyl-1,2,4-oxadiazoles
The kinetics of the ring-into-ring conversion of some new (Z)-phenylhydrazones of 3-benzoyl-1,2,4-oxadiazole containing different nitrogen-substituents at C-5 (3b-d; X = NHMe, NMe2, and NHCOMe) into the relevant triazoles 4b-d have been examined in a wide range of pS+ (0.1-11.9) in 1:1 (v/v) dioxane/water solution. The obtained results have been compared with previous data concerning the (Z)-phenyl-hydrazone of 5-amino-3-benzoyl-1,2,4-oxadiazole (3a; X = NH2). All of the studied (Z)-phenylhydrazones rearrange through three different pathways (specific acid-catalysed, uncatalysed and general base-catalysed). The different effects of the substituents on the course of the rearrangement in the …
New examples of specific base catalysis in mononuclear rearrangements of heterocycles found via a designed modification of the side chain structure
To select suitable candidates for the occurrence of specific-base-catalysis in MRH of (Z)-hydrazones of 3-benzoyl-5-phenyl-1,2,4-oxadiazole we have designed a modification of the side-chain structure by linking a strong electron-withdrawing system to the hydrazono group. Thus we have synthesized the (Z)-semicarbazone (3d), the (Z)-phenylsemicarbazone (3e), and the (Z)-acetylhydrazone (3f) of the above oxadiazole and examined their kinetic behavior in dioxane/water in a large range of proton concentrations (pS + 4.0 14.5). In all the pS+ range examined only a base-catalyzed process has been evidenced (no uncatalysed path occurs). The behavior at the largest pS+ values (the reactivity tends t…
Major adverse cardiovascular events in non-valvular atrial fibrillation with chronic obstructive pulmonary disease: the ARAPACIS study
Chronic obstructive pulmonary disease (COPD) increases the risk of mortality in non-valvular atrial fibrillation (NVAF) patients. Data on the relationship of COPD to major cardiovascular events (MACE) in AF have not been defined. The aim of the study is to assess the predictive value of COPD on incident MACE in NVAF patients over a 3-year follow-up. In the Atrial Fibrillation Registry for Ankle-Brachial Index Prevalence Assessment-Collaborative Italian Study (ARAPACIS) cohort, we evaluate the impact of COPD on the following clinical endpoints: MACE (including vascular death, fatal/non-fatal MI and stroke/TIA), cardiovascular (CV) death and all-cause mortality. Among 2027 NVAF patients, pati…
On the structure of 3-acetylamino-5-methyl- 1,2,4-oxadiazole and on the fully degenerate rearrangements (FDR) of its anion: a stimulating comparison between the results of ‘in-silicon chemistry’ and ‘laboratory chemistry’
An accurate crystal structure determination has provided evidence for a planar conformation for 3-acetylamino-5-methyl-1,2,4-oxadiazole (5), in agreement with quantum-mechanical calculations in the gas phase. In the crystal, a series of strong intermolecular N7H7...O9 hydrogen bonds link the amido groups of different molecules, causing the formation of infinite parallel ordered chains. The effect of the DMSO solvent on the energy and charge distribution of compound 5 and on its relevant 5S anion, involved in a fully degenerate rearrangement (FDR), has been deepened by quantum-mechanical DFT calculations. The calculated energy barrier for the FDR increases in going from in vacuo to DMSO, in …
CCDC 868795: Experimental Crystal Structure Determination
Related Article: A.Cornia, F.Felluga, V.Frenna, F.Ghelfi, A.F.Parsons, M.Pattarozzi, F.Roncaglia, D.Spinelli|2012|Tetrahedron|68|5863|doi:10.1016/j.tet.2012.04.117
CCDC 271045: Experimental Crystal Structure Determination
Related Article: S.Buscemi, A.Pace, A.P.Piccionello, G.Macaluso, N.Vivona, D.Spinelli, G.Giorgi|2005|J.Org.Chem.|70|3288|doi:10.1021/jo047766s
CCDC 630243: Experimental Crystal Structure Determination
Related Article: S.Buscemi, A.Pace, A.P.Piccionello, I.Pibiri, N.Vivona, G.Giorgi, A.Mazzanti, D.Spinelli|2006|J.Org.Chem.|71|8106|doi:10.1021/jo061251e
CCDC 868801: Experimental Crystal Structure Determination
Related Article: A.Cornia, F.Felluga, V.Frenna, F.Ghelfi, A.F.Parsons, M.Pattarozzi, F.Roncaglia, D.Spinelli|2012|Tetrahedron|68|5863|doi:10.1016/j.tet.2012.04.117
CCDC 868798: Experimental Crystal Structure Determination
Related Article: A.Cornia, F.Felluga, V.Frenna, F.Ghelfi, A.F.Parsons, M.Pattarozzi, F.Roncaglia, D.Spinelli|2012|Tetrahedron|68|5863|doi:10.1016/j.tet.2012.04.117
CCDC 630242: Experimental Crystal Structure Determination
Related Article: S.Buscemi, A.Pace, A.P.Piccionello, I.Pibiri, N.Vivona, G.Giorgi, A.Mazzanti, D.Spinelli|2006|J.Org.Chem.|71|8106|doi:10.1021/jo061251e
CCDC 868800: Experimental Crystal Structure Determination
Related Article: A.Cornia, F.Felluga, V.Frenna, F.Ghelfi, A.F.Parsons, M.Pattarozzi, F.Roncaglia, D.Spinelli|2012|Tetrahedron|68|5863|doi:10.1016/j.tet.2012.04.117
CCDC 868799: Experimental Crystal Structure Determination
Related Article: A.Cornia, F.Felluga, V.Frenna, F.Ghelfi, A.F.Parsons, M.Pattarozzi, F.Roncaglia, D.Spinelli|2012|Tetrahedron|68|5863|doi:10.1016/j.tet.2012.04.117
CCDC 868802: Experimental Crystal Structure Determination
Related Article: A.Cornia, F.Felluga, V.Frenna, F.Ghelfi, A.F.Parsons, M.Pattarozzi, F.Roncaglia, D.Spinelli|2012|Tetrahedron|68|5863|doi:10.1016/j.tet.2012.04.117
CCDC 868796: Experimental Crystal Structure Determination
Related Article: A.Cornia, F.Felluga, V.Frenna, F.Ghelfi, A.F.Parsons, M.Pattarozzi, F.Roncaglia, D.Spinelli|2012|Tetrahedron|68|5863|doi:10.1016/j.tet.2012.04.117
CCDC 868797: Experimental Crystal Structure Determination
Related Article: A.Cornia, F.Felluga, V.Frenna, F.Ghelfi, A.F.Parsons, M.Pattarozzi, F.Roncaglia, D.Spinelli|2012|Tetrahedron|68|5863|doi:10.1016/j.tet.2012.04.117
CCDC 635325: Experimental Crystal Structure Determination
Related Article: A.Mugnoli, G.Barone, S.Buscemi, C.Z.Lanza, A.Pace, M.Pani, D.Spinelli|2009|J.Phys.Org.Chem.|22|1086|doi:10.1002/poc.1563
CCDC 630241: Experimental Crystal Structure Determination
Related Article: S.Buscemi, A.Pace, A.P.Piccionello, I.Pibiri, N.Vivona, G.Giorgi, A.Mazzanti, D.Spinelli|2006|J.Org.Chem.|71|8106|doi:10.1021/jo061251e