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De Rosa M, La Manna P, Soriente A, Gaeta C, Talotta C, Neri P. Exploiting the hydrophobicity of calixarene macrocycles for catalysis under “on-water” conditions. RSC Adv 2016. [DOI: 10.1039/c6ra19270j] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Thioureido-calixarene derivatives provide a rate acceleration for the vinylogous Mukaiyama aldol reaction (VMAR) under on-water conditions.
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Talotta C, Gaeta C, De Rosa M, Ascenso JR, Marcos PM, Neri P. Alkylammonium Guest Induced-Fit Recognition by a Flexible Dihomooxacalix[4]arene Derivative. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501319] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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78
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Talotta C, Rubino L, Gaeta C, Capitelli F, Saviano M, Brancatelli G, Geremia S, Vasca E, Neri P. Synthesis and supramolecular features of hybrid POM/onium solid-state assemblies. Supramol Chem 2015. [DOI: 10.1080/10610278.2015.1108418] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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79
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Tommasone S, Talotta C, Gaeta C, Margarucci L, Monti MC, Casapullo A, Macchi B, Prete SP, Ladeira De Araujo A, Neri P. Biomolecular Fishing for Calixarene Partners by a Chemoproteomic Approach. Angew Chem Int Ed Engl 2015; 54:15405-9. [DOI: 10.1002/anie.201508651] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Indexed: 01/01/2023]
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80
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Tommasone S, Talotta C, Gaeta C, Margarucci L, Monti MC, Casapullo A, Macchi B, Prete SP, Ladeira De Araujo A, Neri P. Biomolecular Fishing for Calixarene Partners by a Chemoproteomic Approach. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201508651] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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81
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Meninno S, Parrella A, Brancatelli G, Geremia S, Gaeta C, Talotta C, Neri P, Lattanzi A. Polyoxomolybdate-Calix[4]arene Hybrid: A Catalyst for Sulfoxidation Reactions with Hydrogen Peroxide. Org Lett 2015; 17:5100-3. [DOI: 10.1021/acs.orglett.5b02607] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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82
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Neri P, Arapi I, Pirani V, Gresti G. Signs and symptoms of uveitis. Acta Ophthalmol 2015. [DOI: 10.1111/j.1755-3768.2015.0204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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83
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De Rosa M, Soriente A, Concilio G, Talotta C, Gaeta C, Neri P. Nucleophilic Functionalization of the Calix[6]arene Para- and Meta-Position via p-Bromodienone Route. J Org Chem 2015; 80:7295-300. [PMID: 26083470 DOI: 10.1021/acs.joc.5b00978] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
It is here demonstrated that the p-bromodienone route, previously reported for calix[4]arenes, is also effective for the functionalization of the calix[6]arene macrocycle. Thus, alcoholic O-nucleophiles can be introduced at the calix[6]arene exo rim. In addition, the reaction of a calix[6]arene p-bromodienone derivative with an actived aromatic substrate, such as resorcinol, led to the first example of a meta-functionalized, inherently chiral calix[6]arene derivative.
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Talotta C, De Simone NA, Gaeta C, Neri P. Calix[6]arene Threading with Weakly Interacting Tertiary Ammonium Axles: Generation of Chiral Pseudorotaxane Architectures. Org Lett 2015; 17:1006-9. [DOI: 10.1021/acs.orglett.5b00115] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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85
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Rescifina A, Zagni C, Mineo PG, Giofrè SV, Chiacchio U, Tommasone S, Talotta C, Gaeta C, Neri P. DNA Recognition with Polycyclic-Aromatic-Hydrocarbon-Presenting Calixarene Conjugates. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403050] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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86
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Talotta C, Gaeta C, Neri P. Endo-Complexation of Alkylammonium Ions by Calix[4]arene Cavity: Facilitating Cation−π Interactions through the Weakly Coordinating Anion Approach. J Org Chem 2014; 79:9842-6. [DOI: 10.1021/jo5016689] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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87
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Leigheb M, Conte P, Neri P, Zorzolo I, Martinelli D, Martino F, Carriero A, Grassi F. Thompson calf squeezing test: clinical and ultrasound correlations in the follow up of Achille's tenorraphy. ACTA BIO-MEDICA : ATENEI PARMENSIS 2014; 85 Suppl 2:102-106. [PMID: 25409728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Accepted: 09/24/2014] [Indexed: 06/04/2023]
Abstract
In the follow up of Achille's tenorraphy, negativization of Thompson calf queezing test is not always omogeneous and absolute. Aim of the paper is to correlate Thompson test to different anatomical-ultrasound and functional parameters. We investigated clinically and by ultrasound 61 patients operated on of Achille's tenorraphy at Novara Hospital with follow-up of 10 to 46 months. Negative controls were contralateral tendons. We excluded patients with previous and/or contralateral Achille's tendon ruptures, those operated after 7 days, diabetics or with autoimmune diseases, if used topic steroids, < 18 years, those rejecting the study. Measured parameters were: age, gender, height, weight, side, open vs percutaneous approach, time from operation, neutral angle and range of motion of the ankle, maximal circumference of the leg, Single Heel Rise Test, Visual-Analogue-Scale Foot and Ankle (VAS FA) score; with ultrasound: length of tendons, mio-tendinous U.S.-structure, dynamic diastasis of tendon scar, tendon sliding. Thompson test is positive if no plantar-flexion of the foot occurs at calf squeezing, negative if plantar-flexion is normal (75% patients) and intermediate if reduced or slight reactive (25%).We found correlation of Thompson test with age (p<0,05) and with tendon length (p>0,05), being intermediate tests more represented in older patients and in those with longer healed tendons. In conclusion post-operative negativization of Thompson test can be incomplete as observed in older patients and in those healed with elongated tendon.
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88
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Gaeta C, Talotta C, Neri P. Pseudorotaxane orientational stereoisomerism driven by π-electron density. Chem Commun (Camb) 2014; 50:9917-20. [PMID: 25033221 DOI: 10.1039/c4cc04668d] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Pseudo[2]rotaxane orientational isomers were formed in a stereocontrolled way by exploiting the electron-withdrawing (EW) or electron-donating (ED) effects of para-substituted dibenzylammonium axles threaded through the π-electron rich calixarene cavity, which allow the fine tuning of the weak π-π interactions.
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89
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Gaeta C, Talotta C, Della Sala P, Margarucci L, Casapullo A, Neri P. Anion-induced dimerization in p-squaramidocalix[4]arene derivatives. J Org Chem 2014; 79:3704-8. [PMID: 24645825 DOI: 10.1021/jo500422u] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Spherical anions induce the dimerization of calix[4]arene derivatives 3 and 4 bearing squaramide moieties at the exo rim (p-squaramidocalixarenes). (1)H NMR titration experiments showed that unlike the distal isomer 3, proximal p-squaramidocalixarene 4 is also able to form dimeric complexes with trigonal-planar anions.
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90
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91
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Ciao R, Talotta C, Gaeta C, Margarucci L, Casapullo A, Neri P. An oriented handcuff rotaxane. Org Lett 2013; 15:5694-7. [PMID: 24180584 DOI: 10.1021/ol4026974] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The first example of an oriented handcuff rotaxane has been obtained by through-the-annulus threading of a double-calix[6]arene system with a bis-ammonium axle. The relative orientation of the two calix-wheels can be predefined by exploiting the "endo-alkyl rule" which controls the directionality of the threading of alkylbenzylammonium axles with calixarene macrocycles.
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92
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Thirukkumaran CM, Shi ZQ, Luider J, Kopciuk K, Bahlis N, Neri P, Pho M, Stewart D, Mansoor A, Morris DG. Reovirus as a successful ex vivo purging modality for multiple myeloma. Bone Marrow Transplant 2013; 49:80-6. [PMID: 23974608 DOI: 10.1038/bmt.2013.130] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Revised: 06/27/2013] [Accepted: 07/03/2013] [Indexed: 12/16/2022]
Abstract
Autologous stem cell rescue (ASCT) following high-dose myeloablative chemotherapy is considered to be a therapeutic option for many multiple myeloma (MM) patients; however relapse post ASCT presents a major challenge. The oncolytic potential of reovirus has been previously demonstrated and is currently undergoing phase I monotherapy clinical trials for MM and phase II/III clinical trials for solid tumors. Here we tested the hypothesis that reovirus can successfully purge MM in a murine model that partially recapitulates human MM. RPMI 8226, MM1S, H929 and U266 human myeloma cell lines were exposed to reovirus and oncolysis was assessed. Apheresis product admixed with MM cells was purged with live reovirus (LV) or dead virus (DV) and purging efficacy was monitored via flow cytometry, reverse transcribed-PCR (RT-PCR) and disease relapse in non obese diabetic/severe combined immune deficient (NOD/SCID) mice. Significant LV purging was seen with MM1S, H929 and U266 and the complete ex vivo purging achieved with RPMI 8226 was confirmed by flow cytometry, RT-PCR and absence of disease relapse in vivo. Mice that received LV-purged autografts exhibited 100% survival in comparison to mice that received DV-purged controls. Reovirus's unique ability to kill MM while sparing hematopoietic stem cells places it as an attractive purging agent for MM during ASCT.
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Gaeta C, Talotta C, Margarucci L, Casapullo A, Neri P. Through-the-annulus threading of the larger calix[8]arene macrocycle. J Org Chem 2013; 78:7627-38. [PMID: 23834296 DOI: 10.1021/jo401206j] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A complete study of the through-the-annulus threading of the larger calix[8]arene macrocycle with di-n-alkylammonium cations has been performed in the presence of the "superweak" TFPB counterion. Thus, it was found that such threading occurs only upon partial preorganization of the calix[8]arene macroring by intramolecular bridging. In particular, 1,5-bridged calix[8]arenes with a meta- or para-xylylene bridge (2 and 3) gave pseudo[2]rotaxanes in which one dialkylammonium axle (4a-4e(+)) was threaded into one of the two subcavities of the calix[8]-wheel. Conformational studies by using chemical shift surface maps and DFT calculations evidenced a 3/4-cone geometry for these subcavities. Higher pseudorotaxane K(ass) values were obtained for calix[8]-wheels 2 and 3, with respect to calix[6]-host 1a, due to the cooperative effect of their two subcavities. Dynamic NMR studies on calix[8]-pseudorotaxanes evidenced a direct correlation between K(ass) (and ΔG(ass)) values and energy barriers for calix inversion due to the effectiveness of thread templation. In accordance with DFT calculations, an endo-alkyl preference, over the endo-benzyl one, was observed by threading calix[8]-wheel 3 with the directional n-butylbenzylammonium axle 4d(+).
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Gaeta C, Talotta C, Neri P. The calixarene p-bromodienone route: from a chemical curiosity to an useful synthetic tool. J INCL PHENOM MACRO 2013. [DOI: 10.1007/s10847-013-0343-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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95
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Talotta C, Gaeta C, Qi Z, Schalley CA, Neri P. Pseudorotaxanes with Self-Sorted Sequence and Stereochemical Orientation. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201301570] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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96
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Talotta C, Gaeta C, Qi Z, Schalley CA, Neri P. Pseudorotaxanes with Self-Sorted Sequence and Stereochemical Orientation. Angew Chem Int Ed Engl 2013; 52:7437-41. [DOI: 10.1002/anie.201301570] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Revised: 05/02/2013] [Indexed: 11/11/2022]
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97
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Tassone P, Neri P, Burger R, Di Martino MT, Leone E, Amodio N, Caraglia M, Tagliaferri P. Mouse models as a translational platform for the development of new therapeutic agents in multiple myeloma. Curr Cancer Drug Targets 2013; 12:814-22. [PMID: 22671927 PMCID: PMC3587184 DOI: 10.2174/156800912802429292] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2011] [Revised: 11/25/2011] [Accepted: 12/08/2011] [Indexed: 12/22/2022]
Abstract
Mouse models of multiple myeloma (MM) are basic tools for translational research and play a fundamental role in the development of new therapeutics against plasma cell malignancies. All available models, including transplantable murine tumors in syngenic mice, xenografts of established human cell lines in immunocompromised mice and transgenic models that mirror specific steps of MM pathogenesis, have demonstrated some weaknesses in predicting clinical results, particularly for new drugs targeting the human bone marrow microenvironment (huBMM). The recent interest to models recapitulating the in vivo growth of primary MM cells in a human (SCID-hu) or humanized (SCID-synth-hu) host recipient has provided powerful platforms for the investigation of new compounds targeting MM and/or its huBMM. Here, we review and discuss strengths and weaknesses of the key in vivo models that are currently utilized in the MM preclinical investigation.
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Gaeta C, Talotta C, Mirra S, Margarucci L, Casapullo A, Neri P. Catenation of calixarene annulus. Org Lett 2012; 15:116-9. [PMID: 23286391 DOI: 10.1021/ol303142c] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Through-the-annulus-catenated calixarenes have been obtained, for the first time, by exploiting the "superweak anion" approach that allows the threading of the calix cavity with functionalized dialkylammonium axles. In addition, the first example of a stereoprogrammed synthesis of a catenane orientational isomer (an oriented calix[2]catenane) has been obtained, after macrocyclization, by using a directional alkylbenzylammonium axle.
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Gaeta C, Talotta C, Farina F, Teixeira FA, Marcos PM, Ascenso JR, Neri P. Alkylammonium cation complexation into the narrow cavity of dihomooxacalix[4]arene macrocycle. J Org Chem 2012; 77:10285-93. [PMID: 23062004 DOI: 10.1021/jo3019945] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
How big should a calixarene macrocycle be for endo-cavity complexation to occur or to allow through-the-annulus threading? To answer these questions, a complete study on the complexation of primary and secondary (di)alkylammonium cations by 18-membered p-tert-butyldihomooxacalix[4]arene macroring has been performed in the presence of the "superweak" TFPB counterion. Thus, it was found that this macrocycle is currently the smallest calixarene able to host linear and branched alkylammonium guests inside its aromatic cavity. Molecular mechanics calculations revealed that this recognition event is mainly driven by a H-bonding interaction between the guest ammonium group and the host CH(2)OCH(2) bridge. The endo-cavity complexation of chiral s-BuNH(3)(+) guest results in an asymmetric complex in the NMR time scale. The chirality transfer from guest to host is likely due to a restricted guest motion inside the tight cavity. The complexation study with secondary di-n-alkylammonium·TFPB salts revealed that the 18-membered dihomooxacalix[4]arene macroring cannot give the through-the-annulus threading with them because of its small dimension. However, the macrocycle is able to complex such ions, which can only be accommodated in an hook-like conformation characterized by two unfavorable gauche interactions around the CH(2)-NH(2)(+) bonds. The strain generated by this unfavorable folding is very likely compensated by stronger H-bonds and more favorable CH/π interactions between guest and host.
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100
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Neri P. Feature Binding in Zebrafish. Iperception 2012. [DOI: 10.1068/ie391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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