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Lelis A, Skoulikas N, Papathanasopoulou M, Voreakos K, Georgiadis D. Diastereoselective Synthesis of Phosphinic Dipeptide Isosteres: Domino Chirality Transfer during a Stereocontrolled P-Michael Reaction. Org Lett 2023; 25:6623-6627. [PMID: 37669620 DOI: 10.1021/acs.orglett.3c02335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/07/2023]
Abstract
A highly diastereoselective P-Michael addition of chiral aminophosphinic acids to achiral acrylates has been developed, leading to phosphinic dipeptide isosteres in high yields and dr of up to >50:1. The method allows for the diastereoselective preparation of target compounds without the need for chiral auxiliaries or P-chiral substrates. A possible mechanistic explanation involves a domino chirality transfer from the aminophosphinic acid to the P center, amplified by a crucial benzhydryl ester group, and then to the α-carbon.
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Affiliation(s)
- Angelos Lelis
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15784 Athens, Greece
| | - Nikolaos Skoulikas
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15784 Athens, Greece
| | - Mirto Papathanasopoulou
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15784 Athens, Greece
| | - Kostas Voreakos
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15784 Athens, Greece
| | - Dimitris Georgiadis
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15784 Athens, Greece
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Georgiadis D, Skoulikas N, Papakyriakou A, Stratikos E. Phosphinic Peptides as Tool Compounds for the Study of Pharmacologically Relevant Zn-Metalloproteases. ACS Pharmacol Transl Sci 2022; 5:1228-1253. [PMID: 36524013 PMCID: PMC9745897 DOI: 10.1021/acsptsci.2c00183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Indexed: 11/29/2022]
Abstract
Phosphinic peptides constitute an important class of bioactive compounds that have found a wide range of applications in the field of biology and pharmacology of Zn-metalloproteases, the largest family of proteases in humans. They are designed to mimic the structure of natural substrates during their proteolysis, thus acting as mechanism-based, transition state analogue inhibitors. A combination of electrostatic interactions between the phosphinic acid group and the Zn cation as well as optimal noncovalent enzyme-ligand interactions can result in both high binding affinity for the desired target and selectivity against other proteases. Due to these unique properties, phosphinic peptides have been mainly employed as tool compounds for (a) the purposes of rational drug design by serving as ligands in X-ray crystal structures of target enzymes and allowing the identification of crucial interactions that govern optimal molecular recognition, and (b) the delineation of biological pathways where Zn-metalloproteases are key regulators. For the latter objective, inhibitors of the phosphinopeptidic type have been used either unmodified or after being transformed to probes of various types, thus expanding the arsenal of functional tools available to researchers. The aim of this review is to summarize all recent research achievements in which phosphinic peptides have played a central role as tool compounds in the understanding of the mechanism and biological functions of Zn-metalloproteases in both health and disease.
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Affiliation(s)
- Dimitris Georgiadis
- Department
of Chemistry, National and Kapodistrian
University of Athens, GR-15784 Athens, Greece
| | - Nikolaos Skoulikas
- Department
of Chemistry, National and Kapodistrian
University of Athens, GR-15784 Athens, Greece
| | - Athanasios Papakyriakou
- National
Centre for Scientific Research “Demokritos”, Agia Paraskevi GR-15341 Athens, Greece
| | - Efstratios Stratikos
- Department
of Chemistry, National and Kapodistrian
University of Athens, GR-15784 Athens, Greece
- National
Centre for Scientific Research “Demokritos”, Agia Paraskevi GR-15341 Athens, Greece
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Kokkala P, Voreakos K, Lelis A, Patiniotis K, Skoulikas N, Devel L, Ziotopoulou A, Kaloumenou E, Georgiadis D. Practical Synthesis of Phosphinic Dipeptides by Tandem Esterification of Aminophosphinic and Acrylic Acids under Silylating Conditions. Molecules 2022; 27:molecules27041242. [PMID: 35209031 PMCID: PMC8876710 DOI: 10.3390/molecules27041242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 02/08/2022] [Accepted: 02/10/2022] [Indexed: 11/16/2022] Open
Abstract
In this report, a synthetic protocol for the preparation of phosphinic dipeptides of type 5 is presented. These compounds serve as valuable building blocks for the development of highly potent phosphinopeptidic inhibitors of medicinally relevant Zn-metalloproteases and aspartyl proteases. The proposed method is based on the tandem esterification of α-aminophosphinic and acrylic acids under silylating conditions in order to subsequently participate in a P-Michael reaction. The scope of the transformation was investigated by using a diverse set of readily available acrylic acids and (R)-α-aminophosphinic acids, and high yields were achieved in all cases. In most examples reported herein, the isolation of biologically relevant (R,S)-diastereoisomers became possible by simple crystallization from the crude products, thus enhancing the operational simplicity of the proposed method. Finally, functional groups corresponding to acidic or basic natural amino acids are also compatible with the reaction conditions. Based on the above, we expect that the practicality of the proposed protocol will facilitate the discovery of pharmacologically useful bioactive phosphinic peptides.
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Affiliation(s)
- Paraskevi Kokkala
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15784 Athens, Greece; (P.K.); (K.V.); (A.L.); (K.P.); (N.S.); (A.Z.); (E.K.)
| | - Kostas Voreakos
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15784 Athens, Greece; (P.K.); (K.V.); (A.L.); (K.P.); (N.S.); (A.Z.); (E.K.)
| | - Angelos Lelis
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15784 Athens, Greece; (P.K.); (K.V.); (A.L.); (K.P.); (N.S.); (A.Z.); (E.K.)
| | - Konstantinos Patiniotis
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15784 Athens, Greece; (P.K.); (K.V.); (A.L.); (K.P.); (N.S.); (A.Z.); (E.K.)
| | - Nikolaos Skoulikas
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15784 Athens, Greece; (P.K.); (K.V.); (A.L.); (K.P.); (N.S.); (A.Z.); (E.K.)
| | - Laurent Devel
- Département Médicaments et Technologies pour la Santé (DMTS), CEA, INRAE, SIMoS, Université Paris-Saclay, 91191 Gif-sur-Yvette, France;
| | - Angeliki Ziotopoulou
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15784 Athens, Greece; (P.K.); (K.V.); (A.L.); (K.P.); (N.S.); (A.Z.); (E.K.)
| | - Eleni Kaloumenou
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15784 Athens, Greece; (P.K.); (K.V.); (A.L.); (K.P.); (N.S.); (A.Z.); (E.K.)
| | - Dimitris Georgiadis
- Laboratory of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15784 Athens, Greece; (P.K.); (K.V.); (A.L.); (K.P.); (N.S.); (A.Z.); (E.K.)
- Correspondence: ; Tel.: +30-2107274903
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Varona A, Blanco L, Perez I, Gil J, Irazusta J, López JI, Candenas ML, Pinto FM, Larrinaga G. Expression and activity profiles of DPP IV/CD26 and NEP/CD10 glycoproteins in the human renal cancer are tumor-type dependent. BMC Cancer 2010; 10:193. [PMID: 20459800 PMCID: PMC2876082 DOI: 10.1186/1471-2407-10-193] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2009] [Accepted: 05/11/2010] [Indexed: 11/11/2022] Open
Abstract
Background Cell-surface glycoproteins play critical roles in cell-to-cell recognition, signal transduction and regulation, thus being crucial in cell proliferation and cancer etiogenesis and development. DPP IV and NEP are ubiquitous glycopeptidases closely linked to tumor pathogenesis and development, and they are used as markers in some cancers. In the present study, the activity and protein and mRNA expression of these glycoproteins were analysed in a subset of clear-cell (CCRCC) and chromophobe (ChRCC) renal cell carcinomas, and in renal oncocytomas (RO). Methods Peptidase activities were measured by conventional enzymatic assays with fluorogen-derived substrates. Gene expression was quantitatively determined by qRT-PCR and membrane-bound protein expression and distribution analysis was performed by specific immunostaining. Results The activity of both glycoproteins was sharply decreased in the three histological types of renal tumors. Protein and mRNA expression was strongly downregulated in tumors from distal nephron (ChRCC and RO). Moreover, soluble DPP IV activity positively correlated with the aggressiveness of CCRCCs (higher activities in high grade tumors). Conclusions These results support the pivotal role for DPP IV and NEP in the malignant transformation pathways and point to these peptidases as potential diagnostic markers.
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Affiliation(s)
- Adolfo Varona
- Department of Physiology, Faculty of Medicine and Dentistry, University of Basque Country, Barrio Sarriena s/n, 48940-Leioa, Spain
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Pícha J, Buděšínský M, Fiedler P, Sanda M, Jiráček J. Synthesis of α-carboxyphosphinopeptides derived from norleucine. Amino Acids 2010; 39:1265-80. [PMID: 20349321 DOI: 10.1007/s00726-010-0561-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2010] [Accepted: 03/09/2010] [Indexed: 11/25/2022]
Abstract
In the present study, we describe in detail the synthesis of a relatively rare class of phosphorus compounds, α-carboxyphosphinopeptides. We prepared several norleucine-derived α-carboxyphosphinic pseudopeptides of the general formula Nle-Ψ[PO(OH)]-Gly. These compounds could have important applications as transition state-mimicking inhibitors for methionine or leucine aminopeptidases or other enzymes. For the preparation of the key α-carboxyphosphinate protected precursors, we investigated, compared and improved two different synthetic methods described in literature: the Arbuzov reaction of a silylated N-protected phosphinic acid with a bromoacetate ester and the nucleophilic addition of a mixed O-methyl S-phenyl N-protected phosphonic acid or a methyl N-protected phosphonochloridate with tert-butyl lithioacetate. We also prepared two N-Fmoc protected synthons, Fmoc-Nle-Ψ[PO(OH)]-Gly-COOH and Fmoc-Nle-Ψ[PO(OAd)]-Gly-COOH, and demonstrated that these precursors are suitable building blocks for the solid-phase synthesis of α-carboxyphosphinopeptides.
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Affiliation(s)
- Jan Pícha
- Institute of Organic Chemistry and Biochemistry, v. v. i., Academy of Sciences of the Czech Republic, Flemingovo náměstí 2, 166 10, Prague 6, Czech Republic
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Pícha J, Buděšínský M, Hančlová I, Šanda M, Fiedler P, Vaněk V, Jiráček J. Efficient synthesis of phosphonodepsipeptides derived from norleucine. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.05.051] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Alshoukr F, Rosant C, Maes V, Abdelhak J, Raguin O, Burg S, Sarda L, Barbet J, Tourwé D, Pelaprat D, Gruaz-Guyon A. Novel neurotensin analogues for radioisotope targeting to neurotensin receptor-positive tumors. Bioconjug Chem 2009; 20:1602-10. [PMID: 19610615 DOI: 10.1021/bc900151z] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The increased expression of the neurotensin (NT) receptor NTS1 by different cancer cells, such as pancreatic adenocarcinoma and ductal breast cancer cells, as compared to normal epithelium, offers the opportunity to target these tumors with radiolabeled neurotensin analogues for diagnostic or therapeutic purposes. The aim of the present study was to design and synthesize new neurotensin radioligands and to select a lead molecule with high in vivo tumor selectivity for further development. Two series of neurotensin analogues bearing DTPA were tested: a series of NT(8-13) analogues, with DTPA coupled to the α-NH(2), sharing the same peptide sequence with analogues previously developed for radiolabeling with technetium or rhenium, as well as an NT(6-13) series in which DTPA was coupled to the ε-NH(2) of Lys(6). Changes were introduced to stabilize the bonds between Arg(8)-Arg(9), Pro(10)-Tyr(11), and Tyr(11)-Ile(12) to provide metabolic stability. Structure-activity studies of NT analogues have shown that the attachment of DTPA induces an important loss of affinity unless the distance between the chelator and the NT(8-13) sequence, which binds to the NTS1 receptor, is increased. The doubly stabilized DTPA-NT-20.3 exhibits a high affinity and an elevated stability to enzymatic degradation. It shows specific tumor uptake and high tumor to blood, to liver, and to intestine activity uptake ratios and affords high-contrast planar and SPECT images in an animal model. The DTPA-NT-20.3 peptide is a promising candidate for imaging neurotensin receptor-positive tumors, such as pancreatic adenocarcinoma and invasive ductal breast cancer. Analogues carrying DOTA are being developed for yttrium-90 or lutetium-177 labeling.
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Ye Y, Liu M, Kao JLF, Marshall GR. Design, synthesis, and metal binding of novelPseudo- oligopeptides containing two phosphinic acid groups. Biopolymers 2008; 89:72-85. [PMID: 17910046 DOI: 10.1002/bip.20855] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Phosphinic compounds have potential as amide-bond mimetics in the development of novel peptidomimetics, enzyme inhibitors, and metal-binding ligands. Novel pseudo-oligopeptides with two phosphinic acid groups embedded in the peptide backbone serving as amide-bond surrogates, Psi[P(O,OH)--CH(2)], were targeted. A series of linear and cyclic pseudo-oligopeptides with two phosphinic acid groups arrayed at different positions in the peptide sequence were designed, including Ac--Phe--{(R,S)--AlaPsi[P(O,OH)--CH(2)]Gly}(2)--NH(2) (P2), Ac--NH--(R,S)--AlaPsi[P(O,OH)--CH(2)]Gly--Phe--(R,S)--AlaPsi[P(O,OH)--CH(2)]Gly--NH(2) (P3), Ac--NH--(R,S)--AlaPsi[P(O,OH)--CH(2)]Gly--Phe--Phe--(R,S) --AlaPsi[P(O,OH)--CH(2)]Gly--NH(2) (P4), cyclo{NH--(R,S)--AlaPsi[P(O,OH)--CH(2)]Gly--Phe}(2) (P5), and cyclo[NH--(R,S)--AlaPsi[P(O,OH)--CH(2)]Gly--Phe--Phe](2) (P6). They were synthesized via conventional Fmoc chemistry on solid support utilizing Fmoc-protected phosphinic acid-containing pseudo-dipeptide fragment, i.e. Fmoc--(R,S)--AlaPsi[P(O,OCH(3))--CH(2)]Gly--OH. The pseudo-peptides containing two phosphinic acid groups exhibited the highest binding affinity and selectivity for Fe(III) among the 10-metal ions screened by ESI-MS analysis--Cu(II), Zn(II), Co(II), Ni(II), Mn(II), Fe(II), Fe(III), Al(III), Ga(III), and Gd(III). P4 and P6 with 11-atom linkages between the two phosphinic acids preferred intramolecular metal binding to form 1:1 ligand/metal complexes. As revealed by competition experiments, P4 showed the highest relative binding affinity among the six compounds tested. Noteworthy, P4 also showed higher relative binding affinity than similar dihydroxamate-containing pseudo-peptides reported previously. The novel structural prototype and facile synthesis along with selective and potent Fe(III) binding strongly suggest that pseudo-peptides containing the two or more phosphinic groups as amide-bond surrogates deserve further exploration in medicinal chemistry.
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Affiliation(s)
- Yunpeng Ye
- Department of Biochemistry and Molecular Biophysics, Washington University School of Medicine, 660 S. Euclid Avenue, St. Louis, MO 63110, USA
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