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Shaikh MA, Samal PP, Ubale AS, Krishnamurty S, Gnanaprakasam B. Lewis Acid-Catalyzed Chemodivergent and Regiospecific Reaction of Phenols with Quaternary Peroxyoxindoles. J Org Chem 2022; 87:14155-14167. [PMID: 36269888 DOI: 10.1021/acs.joc.2c01701] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The indium-catalyzed regiospecific coupling of substituted phenol derivatives and quaternary peroxyoxindoles for the synthesis of C2 or C4 benzoxazin-3-one-substituted phenols via skeletal rearrangement is described. This reaction is demonstrated with 17 examples with good yields and diverse aryl substituents. In contrast to the indium-catalyzed reaction, the Cu(OTf)2-catalyzed reaction of the phenol with quaternary peroxyoxindoles afforded C2 or C4 2-oxindole-substituted phenol derivatives. This diverse catalytic reaction generated various biologically important phenol-substituted 2-oxindole derivatives directly without any skeleton rearrangement and was demonstrated with 19 examples in high yield. The regiospecificity and the reaction pathways were explained with the support of density functional theory (DFT).
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Affiliation(s)
- Moseen A Shaikh
- Department of Chemistry, Indian Institute of Science Education and Research, Pune, Maharashtra 411008, India
| | - Pragnya Paramita Samal
- CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, Maharashtra 411008, India
| | - Akash S Ubale
- Department of Chemistry, Indian Institute of Science Education and Research, Pune, Maharashtra 411008, India
| | - Sailaja Krishnamurty
- CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, Maharashtra 411008, India
| | - Boopathy Gnanaprakasam
- Department of Chemistry, Indian Institute of Science Education and Research, Pune, Maharashtra 411008, India
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Iriepa I, Bellanato J. Synthesis, structural, conformational and pharmacological study of some carbamates derived from 8-methyl-8-azabicyclo[3.2.1]octan-3α-ol. J Mol Struct 2011. [DOI: 10.1016/j.molstruc.2011.09.059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Asagarasu A, Matsui T, Hayashi H, Tamaoki S, Yamauchi Y, Minato K, Sato M. Discovery of a novel 5-HT(3) antagonist/5-HT(1A) agonist 3-amino-5,6,7,8-tetrahydro-2-{4-[4-(quinolin-2-yl)piperazin-1-yl]butyl}quinazolin-4(3H)-one (TZB-30878) as an orally bioavailable agent for irritable bowel syndrome. J Med Chem 2010; 53:7549-63. [PMID: 20931963 DOI: 10.1021/jm1002292] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We have prepared a series of quinazolinone derivatives linked with piperazinylquinoline for the treatment of irritable bowel syndrome (IBS). Using pharmacophore analysis, we designed and synthesized compounds which bind to both serotonin receptor subtype 1A (5-HT(1A)) and subtype 3 (5-HT(3)). Quinazolinone derivatives with a sulfur atom in the linker showed high affinity in in vitro assays, but low in vivo activity. Focusing on the linker to improve the pharmacokinetic profile, the sulfur atom in the linker was replaced with a methylene group. Further optimization led to the discovery of compound 17m (TZB-30878) ( J. Pharmacol. Exp. Ther. 2007 , 322 , 1315 - 1323 , Patent WO2005082887 (A1), 2005 ), a novel 5-HT(1A) agonist/5-HT(3) antagonist in the 3-aminoquinazolinone series. In in vivo functional assays, 17m dose dependently inhibited the Bezold-Jarisch reflex and induced 5-HT(1A)-mediated behaviors, and in an IBS animal model, 17m significantly inhibited stress-induced defecation. Pretreatment by WAY-100635 (5-HT(1A) antagonist) significantly attenuated but did not abolish the inhibitory effects of 17m. These results suggested that 17m exerted inhibitory effects via both 5-HT(1A) agonistic and 5-HT(3) antagonistic activities and that 17m would be useful as a therapeutic agent for IBS.
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Affiliation(s)
- Akira Asagarasu
- Synthetic Research Department, ASKA Pharmaceutical Co, Ltd, 5-36-1, Shimosakunobe, Takatsu-ku, Kawasaki 213-8522, Japan.
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Asagarasu A, Matsui T, Hayashi H, Tamaoki S, Yamauchi Y, Sato M. Design and synthesis of piperazinylpyridine derivatives as novel 5-HT1A agonists/5-HT3 antagonists for the treatment of irritable bowel syndrome (IBS). Chem Pharm Bull (Tokyo) 2009; 57:34-42. [PMID: 19122313 DOI: 10.1248/cpb.57.34] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We have prepared a series of piperazinylpyridine derivatives for the treatment of irritable bowel syndrome (IBS). These compounds, which were designed by pharmacophore analysis, bind to both serotonin subtype 1A (5-HT1A) and subtype 3 (5-HT3) receptors. The nitrogen atom of the isoquinoline, a methoxy group and piperazine were essential to the pharmacophore for binding to these receptors. We also synthesized furo- and thienopyridine derivatives according to structure-activity relationship analyses. Compound 17c (TZB-20810) had high affinities to these receptors and exhibited 5-HT1A agonistic activity and 5-HT3 antagonistic activity concurrently, and is a promising drug for further development in the treatment of IBS.
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Affiliation(s)
- Akira Asagarasu
- Synthetic Research Department, ASKA Pharmaceutical Co., Ltd, Japan.
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Iriepa I, Bellanato J, Gálvez E, Madrid A. Synthesis, structural and conformational study of some amides derived from 3-methyl-3-azabicyclo[3.2.1]octan-8α(β)-amines. J Mol Struct 2008. [DOI: 10.1016/j.molstruc.2007.10.029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Iriepa I, Madrid A, Gálvez E, Bellanato J. Synthesis, structural and conformational study of some amides derived from N-methylpiperazine. J Mol Struct 2006. [DOI: 10.1016/j.molstruc.2005.10.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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7
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Iriepa I, Villasante FJ, Gálvez E, Bellanato J, Martín A, Gómez-Sal P. Synthesis, spectroscopic and crystallographic study of some carbamates from an azabicyclic chloroformate and primary heterocyclic amines. NEW J CHEM 2004. [DOI: 10.1039/b309065e] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Gálvez-Ruano E, Iriepa I, Morreale A, Boyd DB. Superimposition-based protocol as a tool for determining bioactive conformations. II. Application to the GABA(A) receptor. J Mol Graph Model 2002; 20:183-97. [PMID: 11775004 DOI: 10.1016/s1093-3263(01)00116-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The natural templates (NT) superimposition method is used to determine the pharmacophoric requirements of the A subtype of the gamma-aminobutyric acid (GABA) receptor. Bioactive conformations for antagonists and agonists are found by superimposing them on a relatively rigid alkaloid bicuculline, which itself is a competitive antagonist at this ligand-gated ion channel receptor. As has been usual in the application of this modeling method, consideration of available experimental data is the cornerstone for obtaining realistic models. The identification of two substructural fragments of bicuculline permitted classification of the ligands. Analysis of the antagonists and agonists with respect to the two substructural fragments revealed two bioactive conformations of the highly flexible GABA molecule, one of which is extended with the nonhydrogenic atoms roughly coplanar torsional angles of -37 and -179 degrees at N-C-C-C and C-C-C-C (carboxyl), respectively. The second bioactive compound is clearly non planar (torsional angles of -81 and -109 degrees at N-C-C-C and C-C-C-C (carboxyl), respectively).
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Affiliation(s)
- E Gálvez-Ruano
- Departamento de Química Orgánica, Universidad de Alcalá de Henares, Madrid, Spain.
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Gálvez-Ruano E, Iriepa I, Morreale A, Boyd DB. Superimposition-based protocol as a tool for determining bioactive conformations. I. Application to ligands of the glycinergic receptor (GlyR). J Mol Graph Model 2002; 19:331-7, 391-5. [PMID: 11449572 DOI: 10.1016/s1093-3263(00)00081-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The natural templates (NT) approach, which is a superimposition-based protocol that has been successfully employed in several studies, is here applied to ligands of the glycine ligand-gated ion channel receptor. Bioactive conformations for glycine and its analogs were obtained using strychnine (a natural and specific competitive antagonist) as template. Experimental evidence was used to guide the superimposition protocol. Three essential regions have been defined in strychnine's structure that serve as a pharmacophore for agonist and antagonist activities. Reasonable alignments of known ligands were found in the majority of the cases. Molecular mechanics (i.e., conformational searches for the relatively flexible ligands) and molecular dynamics (for relatively rigid ligands such as strychnine and 5,6,7,8-tetrahydro-4H-isoxazolo[3,4-d]azepin-3-ol) were used to assess the energetic accessibility of the proposed bioactive conformations.
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Affiliation(s)
- E Gálvez-Ruano
- Departamento de Química Orgánica, Universidad de Alcalá de Henares, Ctra. Madrid-Barcelona Km. 33,600, Alcalá de Henares, 28871 Madrid, Spain.
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Bureau R, Daveu C, Baglin I, Sopkova-De Oliveira Santos J, Lancelot JC, Rault S. Association of two 3D QSAR analyses. application to the study of partial agonist serotonin-3 ligands. JOURNAL OF CHEMICAL INFORMATION AND COMPUTER SCIENCES 2001; 41:815-23. [PMID: 11410063 DOI: 10.1021/ci000058x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
CATALYST and COMFA, two software packages for 3D QSAR studies, were associated to correlate the three-dimensional structures of 75 serotonin 5-HT3 ligands to their biological affinities. The conformational analysis and the influence of chemical function-based alignments (the basis of this association) on final results are discussed in this publication. These two analyses allow for precisely quantitating the weights of significant chemical groups or functions on the biological affinities.
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Affiliation(s)
- R Bureau
- Centre d'Etudes et de Recherche sur le Médicament de Normandie, Université de Caen, 1, rue Vaubénard, 14032 Caen, France
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Bajorath J. Selected concepts and investigations in compound classification, molecular descriptor analysis, and virtual screening. JOURNAL OF CHEMICAL INFORMATION AND COMPUTER SCIENCES 2001; 41:233-45. [PMID: 11277704 DOI: 10.1021/ci0001482] [Citation(s) in RCA: 136] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- J Bajorath
- New Chemical Entities, Inc., 18804 North Creek Parkway, Suite 100, Bothell, Washington 98011, USA.
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12
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Schefzick S, Lämmerhofer M, Lindner W, Lipkowitz KB, Jalaie M. Comparative molecular field analysis of quinine derivatives used as chiral selectors in liquid chromatography: 3D QSAR for the purposes of molecular design of chiral stationary phases. Chirality 2000; 12:742-50. [PMID: 11054833 DOI: 10.1002/1520-636x(2000)12:10<742::aid-chir7>3.0.co;2-m] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
A comparative molecular field analysis (CoMFA) was carried out on a set of aligned quinine-based stationary phase molecules used in enantioselective chromatography. The best QSAR derived has a cross-validated (predictive) r(2)(cv) = 0.671 and a normal r(2) = 0.998. For CoMFAs using both steric and electrostatic fields as descriptors, the steric field descriptors explained more than 91% of the variance while the electrostatic descriptors explained less than 9% of the variance. It is concluded that the long-range electrostatic potential surrounding the positively charged CSPs are not enantiodiscriminating, while the van der Waals and local electrostatic surface features of these CSPs are highly discriminating. Quantum mechanical calculations back up this claim by showing a relatively symmetric electrostatic iso-contour surface. From the QSAR derived here, a region around the carbamate moiety was located where placement of steric bulk is predicted to enhance chiral discrimination. A set of possible synthetic target molecules is presented.
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Affiliation(s)
- S Schefzick
- Department of Analytical Chemistry, University of Vienna, Vienna, Austria
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Lee BS, Chu S, Lee BC, Chi DY, Choe YS, Jeong KJ, Jin C. Syntheses and binding affinities of 6-nitroquipazine analogues for serotonin transporter. Part 1. Bioorg Med Chem Lett 2000; 10:1559-62. [PMID: 10915050 DOI: 10.1016/s0960-894x(00)00290-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
6-Nitroquipazine has been known as one of the most potent and selective inhibitors of serotonin transporter in vitro and in vivo. Nine derivatives of 6-nitroquipazine were synthesized and tested for their potential abilities to displace [3H]citalopram binding to the rat cortical membranes.
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Affiliation(s)
- B S Lee
- Department of Chemistry, Inha University, Inchon, South Korea
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15
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Sequential mono-N-arylation of piperazine nitrogens. Part 1: A simplified method and its application to the preparation of a key N,N′-biaryl piperazine antifungal intermediate. Tetrahedron Lett 1999. [DOI: 10.1016/s0040-4039(99)01103-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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16
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Xue L, Godden J, Gao H, Bajorath J. Identification of a Preferred Set of Molecular Descriptors for Compound Classification Based on Principal Component Analysis. ACTA ACUST UNITED AC 1999. [DOI: 10.1021/ci980231d] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ling Xue
- Computational Chemistry and Informatics, MDS Panlabs, 11804 North Creek Parkway, Bothell, Washington 98011, and MDS Panlabs and Department of Biological Structure, University of Washington, Seattle, Washington 98195
| | - Jeff Godden
- Computational Chemistry and Informatics, MDS Panlabs, 11804 North Creek Parkway, Bothell, Washington 98011, and MDS Panlabs and Department of Biological Structure, University of Washington, Seattle, Washington 98195
| | - Hua Gao
- Computational Chemistry and Informatics, MDS Panlabs, 11804 North Creek Parkway, Bothell, Washington 98011, and MDS Panlabs and Department of Biological Structure, University of Washington, Seattle, Washington 98195
| | - Jürgen Bajorath
- Computational Chemistry and Informatics, MDS Panlabs, 11804 North Creek Parkway, Bothell, Washington 98011, and MDS Panlabs and Department of Biological Structure, University of Washington, Seattle, Washington 98195
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Cappelli A, Anzini M, Vomero S, Canullo L, Mennuni L, Makovec F, Doucet E, Hamon M, Menziani MC, De Benedetti PG, Bruni G, Romeo MR, Giorgi G, Donati A. Novel potent and selective central 5-HT3 receptor ligands provided with different intrinsic efficacy. 2. Molecular basis of the intrinsic efficacy of arylpiperazine derivatives at the central 5-HT3 receptors. J Med Chem 1999; 42:1556-75. [PMID: 10229626 DOI: 10.1021/jm981112s] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Novel 5-HT3 receptor ligands were designed and synthesized with the aim of obtaining deeper insight into the molecular basis of the intrinsic efficacy of arylpiperazines interacting with the central 5-HT3 receptor. The newly synthesized compounds and some previously published compounds belonging to the same class of heteroarylpiperazines were tested for their potential ability to displace [3H]granisetron from rat cortical membranes. These 5-HT3 receptor binding studies revealed subnanomolar affinity in several of the compounds under study. The most active ligands were quipazine derivatives bearing a phenyl group in the 4-position and various oxygenated alkyl side chains in the 3-position of the quinoline nucleus. Qualitative and theoretical quantitative structure-affinity relationship studies were carried out, and the interaction model for the 5-HT3 ligands related to quipazine with their receptor, proposed in part 1 of the present work, was updated to incorporate the latest data. The potential 5-HT3 agonist/antagonist activity of 12 selected compounds was assessed in vitro on the 5-HT3 receptor-dependent [14C]guanidinium uptake in NG 108-15 cells. Their intrinsic efficacy ranged from the 5-HT3 full agonist properties of compounds 7a and 8h, i to those of partial agonists 10a,d and antagonists 8b,d,e, and 9c, d,h,i. The comparison between these functional data and those relative to the previously described compounds suggested that in this class of 5-HT3 ligands the intrinsic efficacy is modulated in a rather subtle manner by the steric features of the heteroaryl moiety.
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Affiliation(s)
- A Cappelli
- Dipartimento Farmaco Chimico Tecnologico, Università di Siena, Via Banchi di Sotto 55, 53100 Siena, Italy
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