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Roberts K, Ursini A, Barnaby R, Cassarà PG, Corsi M, Curotto G, Donati D, Feriani A, Finizia G, Marchioro C, Niccolai D, Oliosi B, Polinelli S, Ratti E, Reggiani A, Tedesco G, Tranquillini ME, Trist DG, van Amsterdam FTM. Synthesis and structure-activity relationship of new 1,5-dialkyl-1,5-benzodiazepines as cholecystokinin-2 receptor antagonists. Bioorg Med Chem 2011; 19:4257-73. [PMID: 21689940 DOI: 10.1016/j.bmc.2011.05.057] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2010] [Revised: 05/25/2011] [Accepted: 05/26/2011] [Indexed: 11/18/2022]
Abstract
This article deals with the synthesis and the activities of some 1,5-dialkyl-3-arylureido-1,5-benzodiazepin-2,4-diones which were prepared as potential CCK2 antagonists, with the intention to find a possible follow up of our lead compound GV150013, showing an improved pharmacokinetic profile. The phenyl ring at N-5 was replaced with more hydrophilic substituents, like alkyl groups bearing basic functions. In some cases, the resolution of the racemic key intermediates 3-amino-benzodiazepines was also accomplished. Among the compounds synthesized and characterised so far in this class, the 5-morpholinoethyl derivative 54, was selected as potential follow up of GV150013 and submitted for further evaluation.
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Affiliation(s)
- Karen Roberts
- GlaxoSmithKline, Medicines Research Centre, Via A. Fleming, 4, 37100 Verona, Italy.
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Ursini A, Capelli AM, Carr RAE, Cassarà P, Corsi M, Curcuruto O, Curotto G, Dal Cin M, Davalli S, Donati D, Feriani A, Finch H, Finizia G, Gaviraghi G, Marien M, Pentassuglia G, Polinelli S, Ratti E, Reggiani, Tarzia G, Tedesco G, Tranquillini ME, Trist DG, Van Amsterdam FTM. Synthesis and SAR of New 5-Phenyl-3-ureido-1,5-benzodiazepines as Cholecystokinin-B Receptor Antagonists. J Med Chem 2000. [DOI: 10.1021/jm001100i] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Ursini A, Capelli AM, Carr RA, Cassarà P, Corsi M, Curcuruto O, Curotto G, Dal Cin M, Davalli S, Donati D, Feriani A, Finch H, Finizia G, Gaviraghi G, Marien M, Pentassuglia G, Polinelli S, Ratti E, Reggiani AM, Tarzia G, Tedesco G, Tranquillini ME, Trist DG, Van Amsterdam FT, Reggiani A. Synthesis and SAR of new 5-phenyl-3-ureido-1,5-benzodiazepines as cholecystokinin-B receptor antagonists. J Med Chem 2000; 43:3596-613. [PMID: 11020274 DOI: 10.1021/jm990967h] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.8] [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: 11/29/2022]
Abstract
A series of 5-phenyl-3-ureidobenzodiazepine-2,4-diones was synthesized and evaluated as cholecystokinin-B (CCK-B) receptor antagonists. Structure-activity relationship (SAR) studies revealed the importance of the N-1 substituent for potent and selective CCK-B affinity. Addition of substituents at the urea side chain provided in some cases more potent compounds. Moreover the introduction of bulky substituents such as adamantylmethyl at N-1 and resolution of the racemic ureas resulted in our lead compound GV150013.
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Affiliation(s)
- A Ursini
- Glaxo Wellcome Medicines Research Centre, Via A. Fleming 4, 37135 Verona, Italy.
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Finizia G, Donati D, Pentassuglia G, Polinelli S, Tarzia G, Tranquillini ME, Ursini A. Synthesis and evaluation of 1,5-benzodiazepines with bridged cycloalkyl substituents at the N-1 position as potent and selective CCK-B Ligands. Arch Pharm (Weinheim) 1998; 331:41-4. [PMID: 9507701 DOI: 10.1002/(sici)1521-4184(199801)331:1<41::aid-ardp41>3.0.co;2-s] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [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: 11/07/2022]
Abstract
The synthesis and biological evaluation of 3-ureido and 3-carbamate derivatives of 1,5-benzodiazepines bearing bridged cycloalkyl substituents at N-1 are reported. Their activity as CCK-B receptor ligands is briefly discussed.
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Affiliation(s)
- G Finizia
- Glaxo Wellcome S.p.A., Medicines Research Center, Verona, Italy
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Tranquillini ME, Cassarà PG, Corsi M, Curotto G, Donati D, Finizia G, Pentassuglia G, Polinelli S, Tarzia G, Ursini A, van Amsterdam FT. Novel 1,5-benzodiazepines as CCK-B ligands. Effect of aryl-carbamic substituents at the C-3 position together with halogen substitution on the benzo-fused ring. Arch Pharm (Weinheim) 1997; 330:353-7. [PMID: 9431027 DOI: 10.1002/ardp.19973301107] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Araldi G, Donati D, Oliosi B, Pasquarello A, Polinelli S, Tarzia G, Ursini A, van Amsterdam FTM. Synthesis and receptor-binding affinity of dipeptoid cholecystokinin ligands. Eur J Med Chem 1996. [DOI: 10.1016/0223-5234(96)89137-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Polinelli S, Broxterman Q, Schoemaker H, Boesten W, Crisma M, Valle G, Toniolo C, Kamphuis J. New aspartame-like sweeteners containing L-(αMe)Phe. Bioorg Med Chem Lett 1992. [DOI: 10.1016/s0960-894x(00)80168-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Valle G, Formaggio F, Crisma M, Toniolo C, Boesten WHJ, Polinelli S, Schoemaker HE, Kamphuis J. Crystal structure of cyclo(C-α-methyl-phenylalanine-proline) (S,S)/(R,S) diastereomeric mixture, C15H18N2O2. ACTA ACUST UNITED AC 1992. [DOI: 10.1524/zkri.1992.202.1-2.168] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Toniolo C, Formaggio F, Crisma M, Bonora GM, Pegoraro S, Polinelli S, Boesten WH, Schoemaker HE, Broxterman QB, Kamphuis J. Synthesis, characterization, and solution conformational analysis of C alpha-methyl-, C alpha-benzylglycine [(alpha Me)Phe] model peptides. Pept Res 1992; 5:56-61. [PMID: 1623304] [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] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We have synthesized, by solution methods, and fully characterized a variety of (alpha Me)Phe derivatives and model peptides (to the pentapeptide level). The results of the solution conformational analysis, performed by using infrared absorption and 1H nuclear magnetic resonance, support the view that the (alpha Me)Phe residue is a stronger beta-turn and helix promoter than the unmethylated Phe analog. A comparison is also made with the conclusions extracted from published work on peptides rich in other C alpha-alkylglycyl residues.
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Affiliation(s)
- C Toniolo
- Department of Organic Chemistry, University of Padova, Italy
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Toniolo C, Crisma M, Bonora GM, Klajc B, Lelj F, Grimaldi P, Rosa A, Polinelli S, Boesten WH, Meijer EM. Peptides from chiral C alpha,alpha-disubstituted glycines. Synthesis and characterization, conformational energy computations and solution conformational analysis of C alpha-methyl, C alpha-isopropylglycine [(alpha Me)Val] derivatives and model peptides. Int J Pept Protein Res 1991; 38:242-52. [PMID: 1761371 DOI: 10.1111/j.1399-3011.1991.tb01435.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Conformational energy computations on Ac-L-(alpha Me)Val-NHMe indicate that turns and right-handed helical structures are particularly stable conformations for this chiral C alpha-methyl, C alpha-alkylglycyl residue. We have synthesized and characterized a variety of L-(alpha Me)Val derivatives and peptides (to the pentamer level). The results of the solution conformational analysis, performed using infrared absorption, 1H nuclear magnetic resonance, and circular dichroism, are in general agreement with those obtained from the theoretical investigation, in the sense that the L-(alpha Me)Val residue turns out to be a strong beta-turn and right-handed helix former. A comparison is also made with the conclusions extracted from published work on peptides rich in other C alpha-methyl, C alpha-alkylglycyl residues.
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Affiliation(s)
- C Toniolo
- C.N.R., Department of Organic Chemistry, University of Padova, Italy
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Toniolo C, Crisma M, Pegoraro S, Valle G, Bonora GM, Becker EL, Polinelli S, Boesten WH, Schoemaker HE, Meijer EM. A conformation-activity study of the [L-(alpha Me)Phe]3 analog of the formyl methionyl tripeptide chemoattractant. Pept Res 1991; 4:66-71. [PMID: 1815780] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
CHO-L-Met-L-Leu-L-(alpha Me)Phe-OMe, an analog of the formyl methionyl tripeptide chemoattractant CHO-L-Met-L-Leu-L-Phe-OH, was synthesized by solution methods and fully characterized. This compound was prepared to determine the effect of the incorporation of a conformationally restricted C alpha,alpha-disubstituted alpha-amino acid residue at position 3 on the relation of three-dimensional structure to biological activity. The peptide was tested for its ability to induce granule enzyme secretion from rabbit peritoneal polymorphonuclear leukocytes. In parallel, a conformational analysis was performed in the crystal state by x-ray diffraction and in organic solution by infrared absorption and 1H nuclear magnetic resonance. These biological and conformational data are discussed in relation to those of the prototype tripeptide and its methyl ester.
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Affiliation(s)
- C Toniolo
- C.N.R., Department of Organic Chemistry, University of Padova, Italy
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Toniolo C, Valle G, Formaggio F, Crisma M, Boesten WHJ, Polinelli S, Schoemaker HE, Kamphuis J. X-Ray diffraction structure determination of a novel peptide oxazol-5(4H)-one with a chiral carbon atom in the heterocyclic moiety. ACTA ACUST UNITED AC 1991. [DOI: 10.1039/p19910003386] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Toniolo C, Crisma M, Valle G, Bonora GM, Polinelli S, Becker EL, Freer RJ, Sudhanand, Rao RB, Balaram P. Conformationally restricted formyl methionyl tripeptide chemoattractants: a three-dimensional structure-activity study of analogs incorporating a C alpha,alpha-dialkylated glycine at position 2. Pept Res 1989; 2:275-81. [PMID: 2520765] [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] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The conformationally restricted CHO-L-Met-Xxx-L-Phe-OY (where Xxx = Aib, Ac3c, Ac5c, Ac6c, and Ac7c; Y = H, Me) tripeptides, analogs of the chemoattractant CHO-L-Met-L-Leu-L-Phe-OH, have been synthesized in solution by classical methods and fully characterized. Compounds were compared to determine the combined effect of backbone conformational preferences and side-chain bulkiness on the relation of three-dimensional structure to biological activity. Each peptide was tested for its ability to induce granule enzyme secretion from rabbit peritoneal polymorphonuclear leukocytes. In parallel, a conformational analysis on the CHO-blocked peptide and their tertbutyloxycarbonylated synthetic precursors was performed in the crystal state and in solution using X-ray diffraction, infrared absorption, and 1H nuclear magnetic resonance. The biological and conformational data are discussed in relation to the proposed model of the chemotactic peptide receptor of rabbit neutrophils.
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