1
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Malik M, Senatore R, Langer T, Holzer W, Pace V. Base-mediated homologative rearrangement of nitrogen-oxygen bonds of N-methyl- N-oxyamides. Chem Sci 2023; 14:10140-10146. [PMID: 37772102 PMCID: PMC10530184 DOI: 10.1039/d3sc03216g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Accepted: 08/26/2023] [Indexed: 09/30/2023] Open
Abstract
Due to the well known reactivity of C(O)-N functionalities towards canonical C1-homologating agents (e.g. carbenoids, diazomethane, ylides), resulting in the extrusion of the N-centered fragment en route to carbonyl compounds, formal C1-insertions within N-O bonds still remain obscure. Herein, we document the homologative transformation of N-methyl-N-oxyamides - with high tolerance for diverse O-substituents - into N-acyl-N,O-acetals. Under controlled basic conditions, the N-methyl group of the same starting materials acts as a competent precursor of the methylene synthon required for the homologation. The logic is levered on the formation of an electrophilic iminium ion (via N-O heterolysis) susceptible to nucleophilic attack by the alkoxide previously expulsed. The procedure documents genuine chemocontrol and flexibility, as judged by the diversity of substituents placed on both amide and nitrogen linchpins. The mechanistic rationale was validated through experiments conducted on D-labeled materials which unambiguously attributed the origin of the methylene fragment to the N-methyl group of the starting compounds.
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Affiliation(s)
- Monika Malik
- Department of Pharmaceutical Sciences, Division of Pharmaceutical Chemistry, University of Vienna Josef-Holaubek-Platz 2 1090 Vienna Austria
| | - Raffaele Senatore
- Department of Pharmaceutical Sciences, Division of Pharmaceutical Chemistry, University of Vienna Josef-Holaubek-Platz 2 1090 Vienna Austria
| | - Thierry Langer
- Department of Pharmaceutical Sciences, Division of Pharmaceutical Chemistry, University of Vienna Josef-Holaubek-Platz 2 1090 Vienna Austria
| | - Wolfgang Holzer
- Department of Pharmaceutical Sciences, Division of Pharmaceutical Chemistry, University of Vienna Josef-Holaubek-Platz 2 1090 Vienna Austria
| | - Vittorio Pace
- Department of Pharmaceutical Sciences, Division of Pharmaceutical Chemistry, University of Vienna Josef-Holaubek-Platz 2 1090 Vienna Austria
- Department of Chemistry, University of Turin Via Giuria 7 10125 Turin Italy
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2
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Malik M, Senatore R, Castiglione D, Roller-Prado A, Pace V. Highly chemoselective homologative assembly of the α-substituted methylsulfinamide motif from N-sulfinylamines. Chem Commun (Camb) 2023; 59:11065-11068. [PMID: 37644820 DOI: 10.1039/d3cc03326k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
α-Substituted methylsulfinamide are prepared through the homologation of electrophilic N-sulfinylamines with Li-CHXY reagents. The transformation takes place under full chemocontrol and exhibits good flexibility for preparing both N-aryl and N-alkyl analogues. Various sensitive functionalities can be accommodated on the starting materials, thus documenting a wide reaction scope.
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Affiliation(s)
- Monika Malik
- Department of Pharmaceutical Sciences, Division of Pharmaceutical Chemistry, University of Vienna, Josef-Holaubek-Platz 2, 1090, Vienna, Austria.
| | - Raffaele Senatore
- Department of Pharmaceutical Sciences, Division of Pharmaceutical Chemistry, University of Vienna, Josef-Holaubek-Platz 2, 1090, Vienna, Austria.
| | - Davide Castiglione
- Department of Chemistry, Via Giuria 7, University of Turin, Turin 10125, Italy
| | - Alexander Roller-Prado
- Department of Inorganic Chemistry - Functional Materials, University of Vienna, Waehringerstrasse 42, 1090, Vienna, Austria
| | - Vittorio Pace
- Department of Pharmaceutical Sciences, Division of Pharmaceutical Chemistry, University of Vienna, Josef-Holaubek-Platz 2, 1090, Vienna, Austria.
- Department of Chemistry, Via Giuria 7, University of Turin, Turin 10125, Italy
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3
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Senatore R, Malik M, Pace V. Fluoroiodomethane: A CH2F‐Moiety Delivering Agent Suitable for Nucleophilic‐, Electrophilic‐ and Radical‐Harnessed Operations. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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4
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Senatore R, Malik M, Langer T, Holzer W, Pace V. Consecutive and Selective Double Methylene Insertion of Lithium Carbenoids to Isothiocyanates: A Direct Assembly of Four-Membered Sulfur-Containing Cycles. Angew Chem Int Ed Engl 2021; 60:24854-24858. [PMID: 34534400 PMCID: PMC9293044 DOI: 10.1002/anie.202110641] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Indexed: 12/15/2022]
Abstract
A formal CH2−CH2 homologation conducted with C1 carbenoids on a carbon electrophile for the obtainment of a four‐membered cycle is reported. The logic proposes the consecutive delivery of two single nucleophilic CH2 units to an isothiocyanate—as competent electrophilic partner—resulting in the assembling of a rare imino‐thietane cluster. The single synthetic operation procedure documents genuine chemocontrol, as indicated by the tolerance to various reactive elements decorating the starting materials. Significantly, the double homologation protocol is accomplished directly on a carbon electrophile, thus not requiring the installation of heteroatom‐centered manifolds (e.g. boron).
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Affiliation(s)
- Raffaele Senatore
- University of Vienna, Department of Pharmaceutical Sciences, Althanstrasse, 14, A-1090, Vienna, Austria
| | - Monika Malik
- University of Vienna, Department of Pharmaceutical Sciences, Althanstrasse, 14, A-1090, Vienna, Austria
| | - Thierry Langer
- University of Vienna, Department of Pharmaceutical Sciences, Althanstrasse, 14, A-1090, Vienna, Austria
| | - Wolfgang Holzer
- University of Vienna, Department of Pharmaceutical Sciences, Althanstrasse, 14, A-1090, Vienna, Austria
| | - Vittorio Pace
- University of Vienna, Department of Pharmaceutical Sciences, Althanstrasse, 14, A-1090, Vienna, Austria.,University of Turin, Department of Chemistry, Via P. Giuria 7, 10125, Turin, Italy
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5
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Senatore R, Malik M, Langer T, Holzer W, Pace V. Consecutive and Selective Double Methylene Insertion of Lithium Carbenoids to Isothiocyanates: A Direct Assembly of Four‐Membered Sulfur‐Containing Cycles. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202110641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Raffaele Senatore
- University of Vienna Department of Pharmaceutical Sciences Althanstrasse, 14 A-1090 Vienna Austria
| | - Monika Malik
- University of Vienna Department of Pharmaceutical Sciences Althanstrasse, 14 A-1090 Vienna Austria
| | - Thierry Langer
- University of Vienna Department of Pharmaceutical Sciences Althanstrasse, 14 A-1090 Vienna Austria
| | - Wolfgang Holzer
- University of Vienna Department of Pharmaceutical Sciences Althanstrasse, 14 A-1090 Vienna Austria
| | - Vittorio Pace
- University of Vienna Department of Pharmaceutical Sciences Althanstrasse, 14 A-1090 Vienna Austria
- University of Turin Department of Chemistry Via P. Giuria 7 10125 Turin Italy
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6
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Ielo L, Miele M, Pillari V, Senatore R, Mirabile S, Gitto R, Holzer W, Alcántara AR, Pace V. Taking advantage of lithium monohalocarbenoid intrinsic α-elimination in 2-MeTHF: controlled epoxide ring-opening en route to halohydrins. Org Biomol Chem 2021; 19:2038-2043. [PMID: 33599644 DOI: 10.1039/d0ob02407d] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The intrinsic degradative α-elimination of Li carbenoids somehow complicates their use in synthesis as C1-synthons. Nevertheless, we herein report how boosting such an α-elimination is a straightforward strategy for accomplishing controlled ring-opening of epoxides to furnish the corresponding β-halohydrins. Crucial for the development of the method is the use of the eco-friendly solvent 2-MeTHF, which forces the degradation of the incipient monohalolithium, due to the very limited stabilizing effect of this solvent on the chemical integrity of the carbenoid. With this approach, high yields of the targeted compounds are consistently obtained under very high regiocontrol and, despite the basic nature of the reagents, no racemization of enantiopure materials is observed.
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Affiliation(s)
- Laura Ielo
- University of Vienna - Department of Pharmaceutical Chemistry, Althanstrasse, 14, 1090, Vienna, Austria. and University of Turin - Department of Chemistry, Via P. Giuria 7, 10125, Turin, Italy
| | - Margherita Miele
- University of Vienna - Department of Pharmaceutical Chemistry, Althanstrasse, 14, 1090, Vienna, Austria.
| | - Veronica Pillari
- University of Vienna - Department of Pharmaceutical Chemistry, Althanstrasse, 14, 1090, Vienna, Austria.
| | - Raffaele Senatore
- University of Vienna - Department of Pharmaceutical Chemistry, Althanstrasse, 14, 1090, Vienna, Austria.
| | - Salvatore Mirabile
- University of Messina - Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, Viale Palatucci, 13, 98168 Messina, Italy
| | - Rosaria Gitto
- University of Messina - Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, Viale Palatucci, 13, 98168 Messina, Italy
| | - Wolfgang Holzer
- University of Vienna - Department of Pharmaceutical Chemistry, Althanstrasse, 14, 1090, Vienna, Austria.
| | - Andrés R Alcántara
- Complutense University of Madrid - Department of Chemistry in Pharmaceutical Sciences, Plaza de Ramón y Cajal, s/n, Madrid, Spain.
| | - Vittorio Pace
- University of Vienna - Department of Pharmaceutical Chemistry, Althanstrasse, 14, 1090, Vienna, Austria. and University of Turin - Department of Chemistry, Via P. Giuria 7, 10125, Turin, Italy
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7
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Senatore R, Malik M, Touqeer S, Listro R, Collina S, Holzer W, Pace V. Straightforward and direct access to β-seleno- amines and sulfonylamides via the controlled addition of phenylselenomethyllithium (LiCH2SePh) to imines. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131220] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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8
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Parziale A, Senatore R, Della Cioppa A, Marcelli A. Cartesian genetic programming for diagnosis of Parkinson disease through handwriting analysis: Performance vs. interpretability issues. Artif Intell Med 2020; 111:101984. [PMID: 33461684 DOI: 10.1016/j.artmed.2020.101984] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 09/16/2020] [Accepted: 11/03/2020] [Indexed: 12/18/2022]
Abstract
In the last decades, early disease identification through non-invasive and automatic methodologies has gathered increasing interest from the scientific community. Among others, Parkinson's disease (PD) has received special attention in that it is a severe and progressive neuro-degenerative disease. As a consequence, early diagnosis would provide more effective and prompt care strategies, that cloud successfully influence patients' life expectancy. However, the most performing systems implement the so called black-box approach, which do not provide explicit rules to reach a decision. This lack of interpretability, has hampered the acceptance of those systems by clinicians and their deployment on the field. In this context, we perform a thorough comparison of different machine learning (ML) techniques, whose classification results are characterized by different levels of interpretability. Such techniques were applied for automatically identify PD patients through the analysis of handwriting and drawing samples. Results analysis shows that white-box approaches, such as Cartesian Genetic Programming and Decision Tree, allow to reach a twofold goal: support the diagnosis of PD and obtain explicit classification models, on which only a subset of features (related to specific tasks) were identified and exploited for classification. Obtained classification models provide important insights for the design of non-invasive, inexpensive and easy to administer diagnostic protocols. Comparison of different ML approaches (in terms of both accuracy and interpretability) has been performed on the features extracted from the handwriting and drawing samples included in the publicly available PaHaW and NewHandPD datasets. The experimental findings show that the Cartesian Genetic Programming outperforms the white-box methods in accuracy and the black-box ones in interpretability.
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Affiliation(s)
- A Parziale
- Natural Computation Lab, DIEM, Università degli Studi di Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano (SA), Italy.
| | - R Senatore
- Natural Computation Lab, DIEM, Università degli Studi di Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano (SA), Italy.
| | - A Della Cioppa
- Natural Computation Lab, DIEM, Università degli Studi di Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano (SA), Italy; Institute for High-Performance Computing and Networking, National Research Council, Naples, Italy.
| | - A Marcelli
- Natural Computation Lab, DIEM, Università degli Studi di Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano (SA), Italy.
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9
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Touqeer S, Senatore R, Malik M, Urban E, Pace V. Modular and Chemoselective Strategy for Accessing (Distinct) α,α‐Dihaloketones from Weinreb Amides and Dihalomethyllithiums. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202001106] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Saad Touqeer
- University of Vienna Department of Pharmaceutical Chemistry Althanstrasse 14 1090 Vienna Austria
| | - Raffaele Senatore
- University of Vienna Department of Pharmaceutical Chemistry Althanstrasse 14 1090 Vienna Austria
| | - Monika Malik
- University of Vienna Department of Pharmaceutical Chemistry Althanstrasse 14 1090 Vienna Austria
| | - Ernst Urban
- University of Vienna Department of Pharmaceutical Chemistry Althanstrasse 14 1090 Vienna Austria
| | - Vittorio Pace
- University of Vienna Department of Pharmaceutical Chemistry Althanstrasse 14 1090 Vienna Austria
- University of Turin Department of Chemistry Via P. Giuria 7 10125 Turin Italy
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10
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Senatore R, Malik M, Spreitzer M, Holzer W, Pace V. Direct and Chemoselective Electrophilic Monofluoromethylation of Heteroatoms ( O-, S-, N-, P-, Se-) with Fluoroiodomethane. Org Lett 2020; 22:1345-1349. [PMID: 32004004 PMCID: PMC7205393 DOI: 10.1021/acs.orglett.9b04654] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The commercially available fluoroiodomethane represents a valuable and effective electrophilic source for transferring the CH2F unit to a series of heteroatom-centered nucleophiles under mild basic conditions. The excellent manipulability offered by its liquid physical state (bp 53.4 °C) enables practical and straightforward one-step nucleophilic substitutions to retain the chiral information embodied, thus allowing it to overcome de facto the requirement for fluoromethylating agents with no immediate access. The high-yielding methodology was successfully applied to a variety of nucleophiles including a series of drugs currently in the market.
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Affiliation(s)
- Raffaele Senatore
- University of Vienna , Department of Pharmaceutical Chemistry , Althanstrasse , 14-1090 Vienna , Austria
| | - Monika Malik
- University of Vienna , Department of Pharmaceutical Chemistry , Althanstrasse , 14-1090 Vienna , Austria
| | - Markus Spreitzer
- University of Vienna , Department of Pharmaceutical Chemistry , Althanstrasse , 14-1090 Vienna , Austria
| | - Wolfgang Holzer
- University of Vienna , Department of Pharmaceutical Chemistry , Althanstrasse , 14-1090 Vienna , Austria
| | - Vittorio Pace
- University of Vienna , Department of Pharmaceutical Chemistry , Althanstrasse , 14-1090 Vienna , Austria
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11
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Abstract
The acylation of α-substituted carbanion-type reagents (MCR1R2X; X = halogen, OR, SR, NR3R4, SeR, etc.) with Weinreb amides constitutes a highly versatile and flexible approach for accessing α-functionalized ketones. In this short review we will present a series of transformations—from our own and the work of others—documenting the general applicability of the methodology. Chemoselectivity is uniformly manifested including for critical substrates featuring additional electrophilic functionalities or sterically demanding elements. Importantly, the stereochemical information contained in the Weinreb amides can be fully transferred to the targeted ketones without affecting the optical purity. The protocol is also applicable to chiral carbanions generated through sparteine-mediated asymmetric deprotonation: the careful design of the experimental procedure allows recycling of the sparteine and the Weinreb ‘amine’ (N,O-dimethylhydroxylamine), thus improving the sustainability perspective of the processes.1 Introduction1.1 The Problem of the Synthesis of α-Substituted Ketones1.2 Weinreb Amides: General Features and Preparation2 Synthesis of α-Substituted Ketones2.1 α-Haloketones2.2 Synthesis of α-Cyanoketones2.3 Synthesis of α-Oxyketones2.4 Synthesis of β-Oxo Thioethers (α-Thioketones)2.5 Synthesis of Chiral α-Oxy and α-Nitrogen Ketones via the Sparteine-Mediated Generation of Optically Active Organolithiums2.6 Synthesis of α-Selenomethyl Ketones2.7 Reactivity of α-Phosphorus Carbanions with Weinreb Amides2.8 Modification of the Weinreb Amide Core: The CLAmP Reagent3 Competing Attack of Nucleophiles at More Reactive Electrophilic Sites than Weinreb Amides4 Conclusions
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Affiliation(s)
| | | | | | | | - Vittorio Pace
- University of Vienna, Department of Pharmaceutical Chemistry
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12
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de la Vega-Hernández K, Senatore R, Miele M, Urban E, Holzer W, Pace V. Chemoselective reduction of isothiocyanates to thioformamides mediated by the Schwartz reagent. Org Biomol Chem 2019; 17:1970-1978. [DOI: 10.1039/c8ob02312c] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Thioformamides are easily prepared – under full chemocontrol – through the partial reduction of isothiocyanates with the in situ generated Schwartz reagent.
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Affiliation(s)
| | - Raffaele Senatore
- University of Vienna
- Department of Pharmaceutical Chemistry
- 1090 Vienna
- Austria
| | - Margherita Miele
- University of Vienna
- Department of Pharmaceutical Chemistry
- 1090 Vienna
- Austria
| | - Ernst Urban
- University of Vienna
- Department of Pharmaceutical Chemistry
- 1090 Vienna
- Austria
| | - Wolfgang Holzer
- University of Vienna
- Department of Pharmaceutical Chemistry
- 1090 Vienna
- Austria
| | - Vittorio Pace
- University of Vienna
- Department of Pharmaceutical Chemistry
- 1090 Vienna
- Austria
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13
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Castoldi L, Monticelli S, Senatore R, Ielo L, Pace V. Homologation chemistry with nucleophilic α-substituted organometallic reagents: chemocontrol, new concepts and (solved) challenges. Chem Commun (Camb) 2018; 54:6692-6704. [PMID: 29850663 DOI: 10.1039/c8cc02499e] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The transfer of a reactive nucleophilic CH2X unit into a preformed bond enables the introduction of a fragment featuring the exact and desired degree of functionalization through a single synthetic operation. The instability of metallated α-organometallic species often poses serious questions regarding the practicability of using this conceptually intuitive and simple approach for forming C-C or C-heteroatom bonds. A deep understanding of processes regulating the formation of these nucleophiles is a precious source of inspiration not only for successfully applying theoretically feasible transformations (i.e. determining how to employ a given reagent), but also for designing new reactions which ultimately lead to the introduction of molecular complexity via short experimental sequences.
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Affiliation(s)
- Laura Castoldi
- University of Vienna, Department of Pharmaceutical Chemistry, Althanstrasse, 14, A-1090, Vienna, Austria.
| | - Serena Monticelli
- University of Vienna, Department of Pharmaceutical Chemistry, Althanstrasse, 14, A-1090, Vienna, Austria.
| | - Raffaele Senatore
- University of Vienna, Department of Pharmaceutical Chemistry, Althanstrasse, 14, A-1090, Vienna, Austria.
| | - Laura Ielo
- University of Vienna, Department of Pharmaceutical Chemistry, Althanstrasse, 14, A-1090, Vienna, Austria.
| | - Vittorio Pace
- University of Vienna, Department of Pharmaceutical Chemistry, Althanstrasse, 14, A-1090, Vienna, Austria.
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14
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Senatore R, Ielo L, Urban E, Holzer W, Pace V. Substituted α-Sulfur Methyl Carbanions: Effective Homologating Agents for the Chemoselective Preparation of β-Oxo Thioethers from Weinreb Amides. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800095] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Raffaele Senatore
- Department of Pharmaceutical Chemistry; University of Vienna; Althanstrasse 14 - 1090 Vienna Austria
| | - Laura Ielo
- Department of Pharmaceutical Chemistry; University of Vienna; Althanstrasse 14 - 1090 Vienna Austria
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences; University of Messina; Viale Annunziata 98168 Messina Italy
| | - Ernst Urban
- Department of Pharmaceutical Chemistry; University of Vienna; Althanstrasse 14 - 1090 Vienna Austria
| | - Wolfgang Holzer
- Department of Pharmaceutical Chemistry; University of Vienna; Althanstrasse 14 - 1090 Vienna Austria
| | - Vittorio Pace
- Department of Pharmaceutical Chemistry; University of Vienna; Althanstrasse 14 - 1090 Vienna Austria
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15
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Vercelli M, Lillini R, Quaglia A, Capocaccia R, Vercelli M, Lillini L, Quaglia A, Capocaccia R, De Angelis R, Gatta G, Tagliabue G, Pannozzo F, Ramazzotti V, Fusco M, Cilia S, De Felice E, Vattiato R, Senatore R, Zucchetto A, Buzzoni C, Tognazzo S, Bellù F, Piffer S, Cusimano R, Zarcone M, Cirilli C, Stracci F, Ferretti S, Cesaraccio R, Rosso S, Giacomin A, Cuccaro F, Michiara M. Italian Regional Health System Structure and Expected Cancer Survival. Tumori Journal 2018. [DOI: 10.1177/1636.17892] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Marina Vercelli
- Liguria Region Cancer Registry, Descriptive Epidemiology Unit, IRCCS Azienda Ospedaliera Universitaria San Martino – IST Istituto Nazionale per la Ricerca sul Cancro, Genoa
- Department of Health Sciences, University of Genoa, Genoa
| | - Roberto Lillini
- Liguria Region Cancer Registry, Descriptive Epidemiology Unit, IRCCS Azienda Ospedaliera Universitaria San Martino – IST Istituto Nazionale per la Ricerca sul Cancro, Genoa
- National Center of Epidemiology, Surveillance and Promotion of Health, National Institute of Health, Rome
- “Vita & Salute” San Raffaele University, Milan, Italy
| | - Alberto Quaglia
- Liguria Region Cancer Registry, Descriptive Epidemiology Unit, IRCCS Azienda Ospedaliera Universitaria San Martino – IST Istituto Nazionale per la Ricerca sul Cancro, Genoa
| | - Riccardo Capocaccia
- Liguria Region Cancer Registry, Descriptive Epidemiology Unit, IRCCS Azienda Ospedaliera Universitaria San Martino – IST Istituto Nazionale per la Ricerca sul Cancro, Genoa
- National Center of Epidemiology, Surveillance and Promotion of Health, National Institute of Health, Rome
| | - M Vercelli
- Registro Tumori del Veneto, Istituto Oncologico Veneto IRCCS
| | - L Lillini
- Registro Tumori del Veneto, Istituto Oncologico Veneto IRCCS
| | - A Quaglia
- Registro Tumori del Veneto, Istituto Oncologico Veneto IRCCS
| | - R Capocaccia
- Registro Tumori del Veneto, Istituto Oncologico Veneto IRCCS
| | - R De Angelis
- Registro Tumori del Veneto, Istituto Oncologico Veneto IRCCS
| | - G Gatta
- Registro Tumori del Veneto, Istituto Oncologico Veneto IRCCS
| | - G Tagliabue
- Registro Tumori del Veneto, Istituto Oncologico Veneto IRCCS
| | - F Pannozzo
- Registro Tumori del Veneto, Istituto Oncologico Veneto IRCCS
| | - V Ramazzotti
- Registro Tumori del Veneto, Istituto Oncologico Veneto IRCCS
| | - M Fusco
- Registro Tumori del Veneto, Istituto Oncologico Veneto IRCCS
| | - S Cilia
- Registro Tumori del Veneto, Istituto Oncologico Veneto IRCCS
| | - E De Felice
- Registro Tumori del Veneto, Istituto Oncologico Veneto IRCCS
| | - R Vattiato
- Registro Tumori del Veneto, Istituto Oncologico Veneto IRCCS
| | - R Senatore
- Registro Tumori del Veneto, Istituto Oncologico Veneto IRCCS
| | - A Zucchetto
- Registro Tumori del Veneto, Istituto Oncologico Veneto IRCCS
| | - C Buzzoni
- Registro Tumori del Veneto, Istituto Oncologico Veneto IRCCS
| | - S Tognazzo
- Registro Tumori del Veneto, Istituto Oncologico Veneto IRCCS
| | - F Bellù
- Registro Tumori del Veneto, Istituto Oncologico Veneto IRCCS
| | - S Piffer
- Registro Tumori del Veneto, Istituto Oncologico Veneto IRCCS
| | - R Cusimano
- Registro Tumori del Veneto, Istituto Oncologico Veneto IRCCS
| | - M Zarcone
- Registro Tumori del Veneto, Istituto Oncologico Veneto IRCCS
| | - C Cirilli
- Registro Tumori del Veneto, Istituto Oncologico Veneto IRCCS
| | - F Stracci
- Registro Tumori del Veneto, Istituto Oncologico Veneto IRCCS
| | - S Ferretti
- Registro Tumori del Veneto, Istituto Oncologico Veneto IRCCS
| | - R Cesaraccio
- Registro Tumori del Veneto, Istituto Oncologico Veneto IRCCS
| | - S Rosso
- Registro Tumori del Veneto, Istituto Oncologico Veneto IRCCS
| | - A Giacomin
- Registro Tumori del Veneto, Istituto Oncologico Veneto IRCCS
| | - F Cuccaro
- Registro Tumori del Veneto, Istituto Oncologico Veneto IRCCS
| | - M Michiara
- Registro Tumori del Veneto, Istituto Oncologico Veneto IRCCS
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Senatore R, Castoldi L, Ielo L, Holzer W, Pace V. Expeditious and Chemoselective Synthesis of α-Aryl and α-Alkyl Selenomethylketones via Homologation Chemistry. Org Lett 2018; 20:2685-2688. [DOI: 10.1021/acs.orglett.8b00896] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Raffaele Senatore
- University of Vienna, Department of Pharmaceutical Chemistry, Althanstrasse, 14, A-1090, Vienna, Austria
| | - Laura Castoldi
- University of Vienna, Department of Pharmaceutical Chemistry, Althanstrasse, 14, A-1090, Vienna, Austria
| | - Laura Ielo
- University of Vienna, Department of Pharmaceutical Chemistry, Althanstrasse, 14, A-1090, Vienna, Austria
- University of Messina, Department of Chemical, Biological, Pharmaceutical, and Environmental Sciences, Viale Annunziata, 98168 Messina, Italy
| | - Wolfgang Holzer
- University of Vienna, Department of Pharmaceutical Chemistry, Althanstrasse, 14, A-1090, Vienna, Austria
| | - Vittorio Pace
- University of Vienna, Department of Pharmaceutical Chemistry, Althanstrasse, 14, A-1090, Vienna, Austria
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Monticelli S, Castoldi L, Murgia I, Senatore R, Mazzeo E, Wackerlig J, Urban E, Langer T, Pace V. Recent advancements on the use of 2-methyltetrahydrofuran in organometallic chemistry. Monatsh Chem 2016; 148:37-48. [PMID: 28127090 PMCID: PMC5225237 DOI: 10.1007/s00706-016-1879-3] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Accepted: 11/13/2016] [Indexed: 12/28/2022]
Abstract
ABSTRACT Since the introduction of 2-methyltetrahydrofuran as an useful alternative to the classical tetrahydrofuran, there has been a continuous interest in the synthetic community operating at academic and industrial towards it. In particular, the much higher stability that basic organometallic reagents display in 2-methyltetrahydrofuran makes it suitable for processes involving such sensitive species including asymmetric transformations. The easy formation of an azeotropic mixture with water, the substantial immiscibility with water, and the fact it derives from natural sources (corncobs or bagasse), allow to consider it in agreement with the Anastas' Geen Chemistry principles. In this minireview, selected examples of its employment in organometallic transformations ranging from carbanions to radical and transition metal-catalyzed processes are provided. GRAPHICAL ABSTRACT
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Affiliation(s)
- Serena Monticelli
- Department of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria
| | - Laura Castoldi
- Department of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria
| | - Irene Murgia
- Department of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria
| | - Raffaele Senatore
- Department of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria
| | - Eugenia Mazzeo
- Department of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria
| | - Judith Wackerlig
- Department of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria
| | - Ernst Urban
- Department of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria
| | - Thierry Langer
- Department of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria
| | - Vittorio Pace
- Department of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria
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Monticelli S, Parisi G, Rui M, de la Vega-Hernández K, Murgia I, Senatore R, Holzer W, Urban E, Langer T, Langer T, Pace V. The use of the Comins-Meyers Amide in Synthetic Chemistry: An Overview. Nat Prod Commun 2016. [DOI: 10.1177/1934578x1601101126] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Formylation reactions are fundamental operations in synthetic chemistry allowing the incorporation into a given structure formyl groups amenable to further derivatization. Conceptually, the introduction of such groups through the reaction between an electrophilic donor and a nucleophilic acceptor ( i.e. organometallic reagent) constitutes a reliable technique with widespread applications. In this Highlight, we summarize the effectiveness of the so called Comins-Meyers amide - [2-( N-methyl- N-formylamino]pyridine – in such a chemistry with vistas to the synthesis of natural products and biologically active substrates.
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Affiliation(s)
- Serena Monticelli
- Department of Pharmaceutical Chemistry, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
| | - Giovanna Parisi
- Department of Pharmaceutical Chemistry, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
| | - Marta Rui
- Department of Pharmaceutical Chemistry, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
| | | | - Irene Murgia
- Department of Pharmaceutical Chemistry, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
| | - Raffaele Senatore
- Department of Pharmaceutical Chemistry, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
| | - Wolfgang Holzer
- Department of Pharmaceutical Chemistry, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
| | - Ernst Urban
- Department of Pharmaceutical Chemistry, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
| | - Thierry Langer
- Department of Pharmaceutical Chemistry, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
| | - Thierry Langer
- Department of Pharmaceutical Chemistry, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
| | - Vittorio Pace
- Department of Pharmaceutical Chemistry, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
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Monticelli S, Parisi G, Rui M, de la Vega-Hernández K, Murgia I, Senatore R, Holzer W, Urban E, Langer T, Pace V. The Use of the Comins-Meyers Amide in Synthetic Chemistry: an Overview. Nat Prod Commun 2016; 11:1729-1732. [PMID: 30475518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023] Open
Abstract
Formylation reactions are fundamental operations in synthetic chemistry allowing the incorporation into a given structure formyl groups amenable to further deiivatization. Conceptually, the introduction of such groups through the reaction between an electrophilic donor and a nucleophilic acceptor (i.e. organometallic reagent) constitutes a reliable technique with widespread applications. In this Highlight, we summarize the effectiveness of the so called Comnins-Meyers amide - [2-(N-methyl-N-formylamino]pyridine - in such a chemistry with vistas to the synthesis of natural products and biologically active substrates.
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Abstract
The estimation of the information carried by spike times is crucial for a quantitative understanding of brain function, but it is difficult because of an upward bias due to limited experimental sampling. We present new progress, based on two basic insights, on reducing the bias problem. First, we show that by means of a careful application of data-shuffling techniques, it is possible to cancel almost entirely the bias of the noise entropy, the most biased part of information. This procedure provides a new information estimator that is much less biased than the standard direct one and has similar variance. Second, we use a nonparametric test to determine whether all the information encoded by the spike train can be decoded assuming a low-dimensional response model. If this is the case, the complexity of response space can be fully captured by a small number of easily sampled parameters. Combining these two different procedures, we obtain a new class of precise estimators of information quantities, which can provide data-robust upper and lower bounds to the mutual information. These bounds are tight even when the number of trials per stimulus available is one order of magnitude smaller than the number of possible responses. The effectiveness and the usefulness of the methods are tested through applications to simulated data and recordings from somatosensory cortex. This application shows that even in the presence of strong correlations, our methods constrain precisely the amount of information encoded by real spike trains recorded in vivo.
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Danelli G, Zangrillo A, Nucera D, Giorgi E, Fanelli G, Senatore R, Casati A. The minimum effective dose of 0.5% hyperbaric spinal bupivacaine for cesarean section. Minerva Anestesiol 2001; 67:573-7. [PMID: 11602876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
BACKGROUND The aim of this prospective, blind study was to determine the minimum effective dose of hyperbaric bupivacaine required for cesarean section. METHODS With Ethical Committee approval and written consent, 24 healthy women undergoing elective cesarean section received a combined spinal epidural anesthesia. We sought to determine the minimum effective dose of spinal bupivacaine using a staircase method. In each patient an arbitrary dose of 0.5% hyperbaric bupivacaine in relation to patient height was used. The initial dose was 0.075 mg/cm height, while the outcome of each patient's response determined the dose for the subsequent patient. When successful spinal block (sensory level = or < T4 with complete motor blockade) was achieved within 20 min from spinal injection, the dose of spinal bupivacaine for the next patient was decreased by 0.01 mg/cm height. Conversely, when successful spinal block was not observed, the dose of spinal bupivacaine for the next patient was increased by 0.01 mg/cm height. Sensory and motor blocks were evaluated every 5 min by an independent, blinded observer. If successful spinal block was not achieved within the designed period, a 5-8 ml epidural bolus of 2% lidocaine was given to achieve adequate surgical anesthesia. RESULTS No complications were reported during the study, and all women delivered their baby uneventfully (APGAR scores 5 min after delivery ranged from 9 to 10) within 5 min from uterus incision. The duration of surgical procedure ranged from 30 to 48 minutes. The dose of hyperbaric bupivacaine providing adequate surgical anesthesia within 20 min from spinal injection in 50% of subjects was 0.036 mg/cm height (95% confidence intervals: 0.031-0.041 mg/cm height). The ED95 calculated from the probit transformation to provide effective spinal anesthesia for cesarean section was 0.06 mg/cm height. CONCLUSIONS This prospective, blind study demonstrated that a dose as low as 0.06 mg/cm height represents the dose of intrathecal bupivacaine providing effective spinal block in 95% of women undergoing elective cesarean section.
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Affiliation(s)
- G Danelli
- Department of Anesthesiology, IRCCS H San Raffaele, University of Vita-Salute, Milan, Italy
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Casati A, Valentini G, Zangrillo A, Senatore R, Mello A, Airaghi B, Torri G. Anaesthesia for ultrasound guided oocyte retrieval: midazolam/remifentanil versus propofol/fentanyl regimens. Eur J Anaesthesiol 1999; 16:773-8. [PMID: 10713871 DOI: 10.1046/j.1365-2346.1999.00584.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
To evaluate the quality of intra-operative anaesthesia and recovery characteristics of two different anaesthesia regimens, 60 healthy women undergoing ultrasound guided oocyte retrieval for in vitro fertilization procedures were randomly allocated to receive either a propofol/fentanyl or a midazolam/remifentanil based anaesthesia. The surgical procedure was successful in all patients and no severe side effects were reported by any patient. Four patients in the midazolam/remifentanil group (13%) would not accept the same anaesthetic procedure for further in vitro fertilization treatment due to intra-operative awareness, while all propofol/fentanyl patients were prepared to accept the same procedure again (P < 0.05). Patients in the propofol/fentanyl group required manual ventilation more frequently through a facemask than those patients treated with the midazolam/remifentanil combination (50% and 30%, respectively; P < 0.05). The time to achieve an Aldrete's score of 10 was shorter in the midazolam/remifentanil patients (2 +/- 2 min) than in those who received propofol/fentanyl (4 +/- 2 min) (P < 0.001), but no differences were observed in the time required to be 'fit to discharge' from the post-anaesthesia care unit. We conclude that the use of a midazolam/remifentanil regimen is as effective and safe as a fentanyl/propofol regimen in patients undergoing transvaginal oocyte retrieval for in vitro fertilization procedures.
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Affiliation(s)
- A Casati
- Department of Anaesthesiology, University of Milan, IRCCS H. San Raffaele, Italy
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Casati A, Fanelli G, Cappelleri G, Aldegheri G, Berti M, Senatore R, Torri G. Effects of speed of intrathecal injection on unilateral spinal block by 1% hyperbaric bupivacaine. A randomized, double-blind study. Minerva Anestesiol 1999; 65:5-10. [PMID: 10206032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
BACKGROUND To evaluate if the speed of intrathecal injection affects the lateral distribution of spinal block during unilateral spinal anaesthesia with 1% hyperbaric bupivacaine. METHODS DESIGN prospective, randomized, double-blind study. SETTING anaesthesia Department at a University Hospital. PATIENTS 30 ASA physical status I-II patients, scheduled for elective orthopedic surgery involving one lower limb only (ankle and foot surgery). INTERVENTIONS after placing the patients in the lateral decubitus position with the site to be operated on dependent, dural puncture was performed at L3-L4 interspace using a 25-Gauge Whitacre spinal needle. After the needle hole had been turned toward the dependent side, patients were randomized to receive 8 mg of 1% hyperbaric bupivacaine injected over either 40 sec (Group SLOW, n = 15) or 3 sec (Group FAST, n = 15). The lateral position was maintained for 15 min. MEASUREMENTS a blind observer evaluated the evolution of sensory (pinprick test) and motor (modified Bromage scale) blocks on both the dependent and nondependent sides until the regression of motor block by one degree. RESULTS No differences in the maximal sensory level on both the dependent and nondependent sides were observed in the two groups. Unilateral sensory block was onserved in 6 patients in group SLOW (40%) and in 5 patients in group FAST (33%), (p = not significant[NS]. Unilateral motor block was observed in 9 patients in group SLOW (60%) and in 10 patients in group FAST (66%) (NS). CONCLUSIONS Extremely reduced speeds of intrathecal injection did not improve the lateral distribution of spinal block when injecting 8 mg of 1% hyperbaric bupivacaine through a pencil-point directional spinal needle.
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Affiliation(s)
- A Casati
- Department of Anesthesiology and Intensive Care, University of Milan, IRCCS H San Raffaele
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Casati A, Fanelli G, Beccaria P, Aldegheri G, Berti M, Senatore R, Torri G. Block distribution and cardiovascular effects of unilateral spinal anaesthesia by 0.5% hyperbaric bupivacaine. A clinical comparison with bilateral spinal block. Minerva Anestesiol 1998; 64:307-12. [PMID: 9796239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
BACKGROUND A low dose of hyperbaric local anaesthetic solution, pencil point needle and slow speed of intrathecal injection have been reported to obtain a unilateral distribution of spinal anaesthesia. This should also minimize cardiovascular effects of spinal block. The aim of this prospective, randomized, parallel group study was to evaluate cardiac performance during unilateral subarachnoid block and to compare it with that produced by standard bilateral spinal anaesthesia. METHODS With Ethic Committee approval and patients' consent we studied 30 ASA I-II patients scheduled for one leg surgery. Dural puncture was performed by 25-G Whitacre needle with patients lying in the lateral position and the side to be operated on dependent. Patients then randomly received 8 mg of 0.5% hyperbaric bupivacaine injected over 80 sec with needle hole orientated towards the dependent side (Unilateral, n = 15), or 15 mg of the same solution injected over 6 sec with needle bevel cranially directed (Control, n = 15). Only patients of the Unilateral group remained in the lateral position for 15 min. Noninvasive Arterial blood pressure, heart rate, stroke volume index and cardiac index were measured before spinal block (baseline) and then at 5, 15, 30 and 45 min; while sensory and motor blocks were evaluated at 15, 30 and 45 min on both sides. RESULTS Unilateral spinal anaesthesia was observed in 11 patients of the Unilateral group (73%). Three patients of the Control group (20%) required colloids for intraoperative hypotension. Mean arterial blood pressure and heart rate decreased from baseline only in the Control group (p = 0.001 and p = 0.0003 respectively), while heart rate was decreased in Control even when compared to Unilateral group (p = 0.01). The stroke volume index was unchanged in the two groups (p = 0.22), while the cardiac index showed a 15-20% decrease from baseline in Control group (p = 0.001), with a significant decrease at 30 and 45 min when compared to Unilateral (p = 0.01). DISCUSSION The use of 8 mg of 0.5% hyperbaric bupivacaine slowly injected through a directional needle provided a spinal block relatively restricted to the operative side with minimal effects on cardiovascular homeostasis.
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Affiliation(s)
- A Casati
- Department of Anaesthesiology and Intensive Care, IRCCS H S. Raffaele, University of Milan
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Casati A, Valentini G, Ferrari S, Senatore R, Zangrillo A, Torri G. Cardiorespiratory changes during gynaecological laparoscopy by abdominal wall elevation: comparison with carbon dioxide pneumoperitoneum. Br J Anaesth 1997; 78:51-4. [PMID: 9059204 DOI: 10.1093/bja/78.1.51] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
We have studied the cardiorespiratory changes produced by abdominal wall elevation (AWE) or carbon dioxide pneumoperitoneum (PN) in 20 women undergoing gynaecological laparoscopy. Arterial pressure, heart rate, lung/chest complicance and blood-gas tensions were measured 10 min after induction of general anaesthesia (T0), 10 min after abdominal distension in the supine position (T1) and 10 min after the Trendelenburg position was assumed (T2). Visual analogue scores for pain were recorded 1 and 6 h after the end of surgery. We found that lung/chest compliance was reduced significantly in group PN at T1 and T2 compared with both T0 and group AWE. Diastolic arterial pressure increased significantly in group PN at T1 and T2 compared with both T0 and group AWE, while it remained unchanged in group AWE. Arterial PCO2 increased significantly only in group PN after pneumoperitoneum, while oxygenation was almost unchanged in both groups. AWE patients had greater abdominal pain 1 h after surgery. Six hours after surgery pain was similar in the two groups. These data indicate that abdominal wall elevation reduced pulmonary compliance less than a pneumoperitoneum in patients undergoing gynaecological laparoscopy.
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Affiliation(s)
- A Casati
- Department of Anaesthesiology and Intensive Care, University of Milan, IRCCS H San Raffaele, Milan, Italy
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Pelosi L, Fels A, Petrillo A, Senatore R, Russo G, Lönegren K, Calace P, Caruso G. Friedreich's ataxia: clinical involvement and evoked potentials. Acta Neurol Scand 1984; 70:360-8. [PMID: 6507046 DOI: 10.1111/j.1600-0404.1984.tb00837.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
In 15 patients definitely affected by Friedreich's ataxia, precocious SEP abnormalities were constantly recorded independent of the duration of symptoms and the severity of clinical involvement; VEPs were frequently involved, but neither VEP abnormalities, nor visual impairment could be correlated with the severity or duration of Friedreich's ataxia clinical involvement; BAEPs were, to different extents, abnormal. These were completely dissociated from hearing disorders and significantly correlated (P less than 0.001) with Friedreich's ataxia clinical disability. Our observation of increased latency of the VEP P100 component and the early disappearance of BAEP Wave V with persistence of Wave I is in contrast with the hypothesis that changes are related to primary axonal degeneration. For practical purposes SEPs could help in the early diagnosis of Friedreich's ataxia, and BAEPs could be used for the electrophysiological monitoring of its clinical progression.
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De Santo NG, Capodisaca G, Senatore R, Cicchetti T, Cirillo D, Damiano M, Giordano C. Stability of peritoneal urea clearance in continuous ambulatory peritoneal dialysis (18 months experience with CAPD). Int J Artif Organs 1979; 2:193-6. [PMID: 457303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A group of 13 patients on Continous Ambulatory Peritoneal Dialysis up to 18 months was studied. During the study period, Peritoneal Urea Clearance was stable. In all but 2 cases peritonitis did not depress the efficiency in clearing urea. When Peritoneal Urea Clearance was corrected for 1.73 m2 surface area, there was on the average an 11.8% increase over not corrected clearance rates. This increase was statistically significant.
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De Santo NG, Capodicasa G, Senatore R, Cicchetti T, Cirillo D, Damiano M, Torella R, Giugliano D, Improta L, Giordano C. Glucose utilization from dialysate in patients on continuous ambulatory peritoneal dialysis (CAPD). Int J Artif Organs 1979; 2:119-24. [PMID: 468403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Abstract
The degree of catabolism was studied in a group of seven patients with postsurgical acute renal failure, and net protein catabolism of 43.1 to 927 g/day. In 70% of a group of 30 patients with stable chronic renal failure receiving and 18 g high biological value protein diet, urea synthesis was equivalent to what could be accounted for by the protein content of the food. This equivalence was not found in studies in both adults and children who were treated for catabolic chronic renal failure. Data obtained show the superiority of feeding essential amino acids with an adequated caloric supply. The need for studies aimed at adapting the uremic patient to protein depletive mechanisms is strongly stressed.
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De Santo NG, Cirillo D, Senatore R, Cicchetti T, Manzo M, Capasso G, Giordano C. Comparing schedules of daily peritoneal dialysis. J Dial 1978; 2:311-24. [PMID: 721988 DOI: 10.3109/08860227809079319] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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