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Hedna R, DiMaio A, Robin M, Allegro D, Tatoni M, Peyrot V, Barbier P, Kovacic H, Breuzard G. 2-Aminothiazole-Flavonoid Hybrid Derivatives Binding to Tau Protein and Responsible for Antitumor Activity in Glioblastoma. Int J Mol Sci 2023; 24:15050. [PMID: 37894731 PMCID: PMC10606064 DOI: 10.3390/ijms242015050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 10/04/2023] [Accepted: 10/05/2023] [Indexed: 10/29/2023] Open
Abstract
Tau protein has been described for several decades as a promoter of tubulin assembly into microtubules. Dysregulation or alterations in Tau expression have been related to various brain cancers, including the highly aggressive and lethal brain tumor glioblastoma multiform (GBM). In this respect, Tau holds significant promise as a target for the development of novel therapies. Here, we examined the structure-activity relationship of a new series of seventeen 2-aminothiazole-fused to flavonoid hybrid compounds (TZF) on Tau binding, Tau fibrillation, and cellular effects on Tau-expressing cancer cells. By spectrofluorometric approach, we found that two compounds, 2 and 9, demonstrated high affinity for Tau and exhibited a strong propensity to inhibit Tau fibrillation. Then, the biological activity of these compounds was evaluated on several Tau-expressing cells derived from glioblastoma. The two lead compounds displayed a high anti-metabolic activity on cells related to an increased fission of the mitochondria network. Moreover, we showed that both compounds induced microtubule bundling within newly formed neurite-like protrusions, as well as with defection of cell migration. Taken together, our results provide a strong experimental basis to develop new potent molecules targeting Tau-expressing cancer cells, such as GBM.
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Affiliation(s)
- Rayane Hedna
- Faculté des Sciences Médicales et Paramédicales, Institut de Neurophysiopathologie (INP), UMR 7051, CNRS, Aix Marseille Université, 13005 Marseille, France; (R.H.); (D.A.); (M.T.); (V.P.); (P.B.); (H.K.)
| | - Attilio DiMaio
- Faculté de Pharmacie, Institut Méditerranéen de Biodiversité et Ecologie Marine et Continentale (IMBE), UMR 7263, CNRS, IRD 237, Aix-Marseille Université, 13005 Marseille, France; (A.D.); (M.R.)
| | - Maxime Robin
- Faculté de Pharmacie, Institut Méditerranéen de Biodiversité et Ecologie Marine et Continentale (IMBE), UMR 7263, CNRS, IRD 237, Aix-Marseille Université, 13005 Marseille, France; (A.D.); (M.R.)
| | - Diane Allegro
- Faculté des Sciences Médicales et Paramédicales, Institut de Neurophysiopathologie (INP), UMR 7051, CNRS, Aix Marseille Université, 13005 Marseille, France; (R.H.); (D.A.); (M.T.); (V.P.); (P.B.); (H.K.)
| | - Mario Tatoni
- Faculté des Sciences Médicales et Paramédicales, Institut de Neurophysiopathologie (INP), UMR 7051, CNRS, Aix Marseille Université, 13005 Marseille, France; (R.H.); (D.A.); (M.T.); (V.P.); (P.B.); (H.K.)
| | - Vincent Peyrot
- Faculté des Sciences Médicales et Paramédicales, Institut de Neurophysiopathologie (INP), UMR 7051, CNRS, Aix Marseille Université, 13005 Marseille, France; (R.H.); (D.A.); (M.T.); (V.P.); (P.B.); (H.K.)
| | - Pascale Barbier
- Faculté des Sciences Médicales et Paramédicales, Institut de Neurophysiopathologie (INP), UMR 7051, CNRS, Aix Marseille Université, 13005 Marseille, France; (R.H.); (D.A.); (M.T.); (V.P.); (P.B.); (H.K.)
| | - Hervé Kovacic
- Faculté des Sciences Médicales et Paramédicales, Institut de Neurophysiopathologie (INP), UMR 7051, CNRS, Aix Marseille Université, 13005 Marseille, France; (R.H.); (D.A.); (M.T.); (V.P.); (P.B.); (H.K.)
| | - Gilles Breuzard
- Faculté des Sciences Médicales et Paramédicales, Institut de Neurophysiopathologie (INP), UMR 7051, CNRS, Aix Marseille Université, 13005 Marseille, France; (R.H.); (D.A.); (M.T.); (V.P.); (P.B.); (H.K.)
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2
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Al-Wahaibi LH, El-Sheref EM, Hassan AA, Bräse S, Nieger M, Youssif BGM, Ibrahim MAA, Tawfeek HN. Synthesis and Structure Determination of Substituted Thiazole Derivatives as EGFR/BRAF V600E Dual Inhibitors Endowed with Antiproliferative Activity. Pharmaceuticals (Basel) 2023; 16:1014. [PMID: 37513926 PMCID: PMC10384562 DOI: 10.3390/ph16071014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Revised: 07/12/2023] [Accepted: 07/13/2023] [Indexed: 07/30/2023] Open
Abstract
2,3,4-trisubstituted thiazoles 3a-i, having a methyl group in position four, were synthesized by the reaction of 1,4-disubstituted thiosemicarbazides with chloroacetone in ethyl acetate/Et3N at room temperature or in ethanol under reflux. The structures of new compounds were determined using NMR spectroscopy, mass spectrometry, and elemental analyses. Moreover, the structure of compound 3a was unambiguously confirmed with X-ray analysis. The cell viability assay of 3a-i at 50 µM was greater than 87%, and none of the tested substances were cytotoxic. Compounds 3a-i demonstrated good antiproliferative activity, with GI50 values ranging from 37 to 86 nM against the four tested human cancer cell lines, compared to the reference erlotinib, which had a GI50 value of 33 nM. The most potent derivatives were found to be compounds 3a, 3c, 3d, and 3f, with GI50 values ranging from 37 nM to 54 nM. The EGFR-TK and BRAFV600E inhibitory assays' results matched the antiproliferative assay's results, with the most potent derivatives, as antiproliferative agents, also being the most potent EGFR and BRAFV600E inhibitors. The docking computations were employed to investigate the docking modes and scores of compounds 3a, 3c, 3d, and 3f toward BRAFV600E and EGFR. Docking computations demonstrated the good affinity of compound 3f against BRAFV600E and EGFR, with values of -8.7 and -8.5 kcal/mol, respectively.
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Affiliation(s)
- Lamya H Al-Wahaibi
- Department of Chemistry, College of Sciences, Princess Nourah Bint Abdulrahman University, Riyadh 11564, Saudi Arabia
| | - Essmat M El-Sheref
- Chemistry Department, Faculty of Science, Minia University, El Minia 61519, Egypt
| | - Alaa A Hassan
- Chemistry Department, Faculty of Science, Minia University, El Minia 61519, Egypt
| | - S Bräse
- Institute of Biological and Chemical Systems, IBCS-FMS, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
| | - M Nieger
- Department of Chemistry, University of Helsinki, P.O. Box 55 (A. I. Virtasen aukio 1), 00014 Helsinki, Finland
| | - Bahaa G M Youssif
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt
| | - Mahmoud A A Ibrahim
- Chemistry Department, Faculty of Science, Minia University, El Minia 61519, Egypt
- School of Health Sciences, University of KwaZulu-Natal, Westville Campus, Durban 4000, South Africa
| | - Hendawy N Tawfeek
- Chemistry Department, Faculty of Science, Minia University, El Minia 61519, Egypt
- Unit of Occupational of Safety and Health, Administration Office of Minia University, El-Minia 61519, Egypt
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3
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Sinicropi MS, Ceramella J, Vanelle P, Iacopetta D, Rosano C, Khoumeri O, Abdelmohsen S, Abdelhady W, El-Kashef H. Novel Thiazolidine-2,4-dione-trimethoxybenzene-thiazole Hybrids as Human Topoisomerases Inhibitors. Pharmaceuticals (Basel) 2023; 16:946. [PMID: 37513858 PMCID: PMC10384675 DOI: 10.3390/ph16070946] [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: 05/15/2023] [Revised: 06/09/2023] [Accepted: 06/26/2023] [Indexed: 07/30/2023] Open
Abstract
Cancer is a complex and heterogeneous disease and is still one of the leading causes of morbidity and mortality worldwide, mostly as the population ages. Despite the encouraging advances made over the years in chemotherapy, the development of new compounds for cancer treatments is an urgent priority. In recent years, the design and chemical synthesis of several innovative hybrid molecules, which bring different pharmacophores on the same scaffold, have attracted the interest of many researchers. Following this strategy, we designed and synthetized a series of new hybrid compounds that contain three pharmacophores, namely trimethoxybenzene, thiazolidinedione and thiazole, and tested their anticancer properties on two breast cancer (MCF-7 and MDA-MB-231) cell lines and one melanoma (A2058) cell line. The most active compounds were particularly effective against the MCF-7 cells and did not affect the viability of the normal MCF-10A cells. Docking simulations indicated the human Topoisomerases I and II (hTopos I and II) as possible targets of these compounds, the inhibitory activity of which was demonstrated by the mean of direct enzymatic assays. Particularly, compound 7e was proved to inhibit both the hTopo I and II, whereas compounds 7c,d blocked only the hTopo II. Finally, compound 7e was responsible for MCF-7 cell death by apoptosis. The reported results are promising for the further design and synthesis of other analogues potentially active as anticancer tools.
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Affiliation(s)
- Maria Stefania Sinicropi
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Arcavacata di Rende, Italy
| | - Jessica Ceramella
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Arcavacata di Rende, Italy
| | - Patrice Vanelle
- Aix Marseille University, CNRS, ICR UMR 7273, Equipe Pharmaco-Chimie Radicalaire, Faculté de Pharmacie, 27 Boulevard Jean Moulin, CS30064, CEDEX 05, 13385 Marseille, France
| | - Domenico Iacopetta
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Arcavacata di Rende, Italy
| | - Camillo Rosano
- U.O. Proteomica e Spettrometria di Massa, IRCCS Ospedale Policlinico San Martino, Largo R. Benzi 10, 16132 Genova, Italy
| | - Omar Khoumeri
- Aix Marseille University, CNRS, ICR UMR 7273, Equipe Pharmaco-Chimie Radicalaire, Faculté de Pharmacie, 27 Boulevard Jean Moulin, CS30064, CEDEX 05, 13385 Marseille, France
| | - Shawkat Abdelmohsen
- Department of Chemistry, Faculty of Science, Assiut University, Assiut 71516, Egypt
| | - Wafaa Abdelhady
- Department of Chemistry, Faculty of Science, Assiut University, Assiut 71516, Egypt
| | - Hussein El-Kashef
- Department of Chemistry, Faculty of Science, Assiut University, Assiut 71516, Egypt
- Faculty of Pharmacy, Sphinx University, New Assiut 71684, Egypt
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4
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Salem ME, Mahrous EM, Ragab EA, Nafie MS, Dawood KM. Synthesis of novel mono- and bis-pyrazolylthiazole derivatives as anti-liver cancer agents through EGFR/HER2 target inhibition. BMC Chem 2023; 17:51. [PMID: 37291635 DOI: 10.1186/s13065-023-00921-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Accepted: 02/23/2023] [Indexed: 06/10/2023] Open
Abstract
3-Bromoacetyl-4-(2-naphthoyl)-1-phenyl-1H-pyrazole (6) was synthesized from 2-acetylnaphthalene and was used as a new key building block for constructing the title targets. Thus, the reaction of 6 with the thiosemicarbazones 7a-d and 9-11 afforded the corresponding simple naphthoyl-(3-pyrazolyl)thiazole hybrids 8a-d and 12 ~ 14. The symmetric bis-(2-naphthoyl-pyrazol-3-yl)thiazol-2-yl)hydrazono)methyl)phenoxy)alkanes 18a-c and 21a-c were similarly synthesized from reaction of 6 with the appropriate bis-thiosemicarbazones 17a-c and 19a-c, respectively. The synthesized two series of simple and symmetrical bis-molecular hybrid merging naphthalene, thiazole, and pyrazole were evaluated for their cytotoxicity. Compounds 18b,c and 21a showed the most potent cytotoxicity (IC50 = 0.97-3.57 µM) compared to Lapatinib (IC50 = 7.45 µM). Additionally, they were safe (non-cytotoxic) against the THLE2 cells with higher IC50 values. Compounds 18c exhibited promising EGFR and HER-2 inhibitory activities with IC50 = 4.98 and 9.85 nM, respectively, compared to Lapatinib (IC50 = 6.1 and 17.2 nM). Apoptosis investigation revealed that 18c significantly activated apoptotic cell death in HepG2 cells, increasing the death rate by 63.6-fold and arresting cell proliferation at the S-phase. Compound 18c upregulated P53 by 8.6-fold, Bax by 8.9-fold, caspase-3,8,9 by 9, 2.3, and 7.6-fold, while it inhibited the Bcl-2 expression by 0.34-fold. Thereby, compound 18c exhibited promising cytotoxicity against EGFR/HER2 inhibition against liver cancer.
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Affiliation(s)
- Mostafa E Salem
- Department of Chemistry, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - Esraa M Mahrous
- Department of Chemistry, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - Eman A Ragab
- Department of Chemistry, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - Mohamed S Nafie
- Department of Chemistry (Biochemistry program), Faculty of Science, Suez Canal University, Ismailia, 41522, Egypt
| | - Kamal M Dawood
- Department of Chemistry, Faculty of Science, Cairo University, Giza, 12613, Egypt.
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5
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Ashmawy FO, Gomha SM, Abdallah MA, Zaki MEA, Al-Hussain SA, El-Desouky MA. Synthesis, In Vitro Evaluation and Molecular Docking Studies of Novel Thiophenyl Thiazolyl-Pyridine Hybrids as Potential Anticancer Agents. Molecules 2023; 28:molecules28114270. [PMID: 37298747 DOI: 10.3390/molecules28114270] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 05/11/2023] [Accepted: 05/15/2023] [Indexed: 06/12/2023] Open
Abstract
Many literature reports revealed the anticancer activity of pyridine and thiazole derivatives, especially in lung cancer. Therefore, a new series of thiazolyl pyridines linked with thiophene moiety via hydrazone group was prepared by one-pot multi-component reaction of (E)-1-(4-methyl-2-(2-(1-(thiophen-2-yl)ethylidene)hydrazinyl)thiazol-5-yl)ethanone with benzaldehyde derivatives and malononitrile in a good yield. Then, compound 5 and the thiazolyl pyridines were investigated for their in vitro anticancer activity against lung cancer (A549) cell line using MTT assay compared to doxorubicin as a reference drug. The structure of all the newly synthesized compounds was established based on spectroscopic data and elemental analyses. For better insight to investigate their mechanism of action on A549 cell line, docking studies were performed, targeting epidermal growth factor receptor (EGFR) tyrosine kinase. The results obtained revealed that the tested compounds displayed excellent anticancer activities against lung cancer cell line except 8c and 8f compared to reference drug. Based on the data obtained, it can be inferred that the novel compounds, as well as their key intermediate, compound 5, demonstrated potent anticancer activity against lung carcinoma by inhibiting EGFR.
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Affiliation(s)
- Fayza O Ashmawy
- Department of Chemistry, Biochemistry Division, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Sobhi M Gomha
- Department of Chemistry, Faculty of Science, Islamic University of Madinah, Madinah 42351, Saudi Arabia
- Department of Chemistry, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Magda A Abdallah
- Department of Chemistry, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Magdi E A Zaki
- Department of Chemistry, Faculty of Science, Imam Mohammed Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia
| | - Sami A Al-Hussain
- Department of Chemistry, Faculty of Science, Imam Mohammed Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia
| | - Mohamed A El-Desouky
- Department of Chemistry, Biochemistry Division, Faculty of Science, Cairo University, Giza 12613, Egypt
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6
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Abd El Salam HA, Fathy U, Zayed EM, El Shehry MF, Ahmed E.Gouda A. Design, Synthesis, Cytotoxic Activity and Molecular Docking Studies of Naphthyl Pyrazolyl Thiazole Derivatives as Anticancer Agents. ChemistrySelect 2023. [DOI: 10.1002/slct.202203956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Hayam A. Abd El Salam
- Green Chemistry Department National Research Centre, Dokki-Giza-Egypt-P.O.12622 Cairo Egypt
| | - Usama Fathy
- Applied Organic Chemistry Department National Research Centre, Dokki-Giza-Egypt-P.O.12622 Cairo Egypt Corresponding Author
| | - Ehab M. Zayed
- Green Chemistry Department National Research Centre, Dokki-Giza-Egypt-P.O.12622 Cairo Egypt
| | - Mohamed F. El Shehry
- Pesticide Chemistry Department National Research Centre, Dokki-Giza-Egypt-P.O.12622 Cairo Egypt
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7
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Aly AA, Alshammari MB, Ahmad A, A. M. Gomaa H, G. M. Youssif B, Bräse S, A. A. Ibrahim M, Mohamed AH. Design, synthesis, docking, and mechanistic studies of new thiazolyl/thiazolidinylpyrimidine-2,4-dione antiproliferative agents. ARAB J CHEM 2023. [DOI: 10.1016/j.arabjc.2023.104612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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8
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El-Abd A, Bayomi SM, El-Damasy AK, Mansour B, Abdel-Aziz NI, El-Sherbeny MA. Synthesis and Molecular Docking Study of New Thiazole Derivatives as Potential Tubulin Polymerization Inhibitors. ACS OMEGA 2022; 7:33599-33613. [PMID: 36157722 PMCID: PMC9494671 DOI: 10.1021/acsomega.2c05077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 08/18/2022] [Indexed: 06/16/2023]
Abstract
A new series of 2,4-disubstituted thiazole derivatives containing 4-(3,4,5-trimethoxyphenyl) moiety was synthesized and evaluated for their potential anticancer activity as tubulin polymerization inhibitors. All designed compounds were screened for cytotoxic activity against four human cancer cell lines, namely, HepG2, MCF-7, HCT116, and HeLa, using 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide assay, with combretastatin A-4 as a reference drug. Compounds 5c, 6d, 7c, 8, and 9a,b showed superior activity against the tested cell lines, with IC50 values ranging from 3.35 ± 0.2 to 18.69 ± 0.9 μM. Further investigation for the most active cytotoxic agents as tubulin polymerization inhibitors was also performed in order to explore the mechanism of their antiproliferative activity. The obtained results suggested that compounds 5c, 7c, and 9a remarkably inhibit tubulin polymerization, with IC50 values of 2.95 ± 0.18, 2.00 ± 0.12, and 2.38 ± 0.14 μM, respectively, which exceeded that of the reference drug combretastatin A-4 (IC50 2.96 ± 0.18 μM). Molecular docking studies were also conducted to investigate the possible binding interactions between the targeted compounds and the tubulin active site. The interpretation of the results showed clearly that compounds 7c and 9a were identified as the most potent tubulin polymerization inhibitors with promising cytotoxic activity and excellent binding mode in the docking study.
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Affiliation(s)
- Azhar
O. El-Abd
- Department
of Pharmaceutical Chemistry, Faculty of Pharmacy, Delta University for Science and Technology, 11152 Gamasa, Egypt
| | - Said M. Bayomi
- Department
of Medicinal Chemistry, Faculty of Pharmacy, University of Mansoura, 35516 Mansoura, Egypt
| | - Ashraf K. El-Damasy
- Department
of Medicinal Chemistry, Faculty of Pharmacy, University of Mansoura, 35516 Mansoura, Egypt
| | - Basem Mansour
- Department
of Pharmaceutical Chemistry, Faculty of Pharmacy, Delta University for Science and Technology, 11152 Gamasa, Egypt
| | - Naglaa I. Abdel-Aziz
- Department
of Pharmaceutical Chemistry, Faculty of Pharmacy, Delta University for Science and Technology, 11152 Gamasa, Egypt
- Department
of Medicinal Chemistry, Faculty of Pharmacy, University of Mansoura, 35516 Mansoura, Egypt
| | - Magda A. El-Sherbeny
- Department
of Pharmaceutical Chemistry, Faculty of Pharmacy, Delta University for Science and Technology, 11152 Gamasa, Egypt
- Department
of Medicinal Chemistry, Faculty of Pharmacy, University of Mansoura, 35516 Mansoura, Egypt
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9
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Synthesis of naphthalimide derivatives bearing benzothiazole and thiazole moieties: In vitro anticancer and in silico ADMET study. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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10
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Othman IMM, Alamshany ZM, Tashkandi NY, Gad-Elkareem MAM, Abd El-Karim SS, Nossier ES. Synthesis and biological evaluation of new derivatives of thieno-thiazole and dihydrothiazolo-thiazole scaffolds integrated with a pyrazoline nucleus as anticancer and multi-targeting kinase inhibitors. RSC Adv 2022; 12:561-577. [PMID: 35424523 PMCID: PMC8694192 DOI: 10.1039/d1ra08055e] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 12/15/2021] [Indexed: 12/17/2022] Open
Abstract
Deregulation of various protein kinases is considered as one of the important factors resulting in cancer development and metastasis, thus multi-targeting the kinase family is one of the most important strategies in current cancer therapy. This context represents the design and synthesis of two sets of derivatives bearing a pyrazoline-3-one ring conjugated either with a thieno[3,2-d]thiazole or with a dihydrothiazolo[4,5-d]thiazole scaffold via an NH linker, 3a–d and 5a–d respectively, using the pyrazolinone–thiazolinone derivative 1 as a key precursor. All the newly synthesized compounds were assessed in vitro for their anticancer activity against two cancer cell lines (MCF-7 and HepG-2). The safety profile of the most active cytotoxic candidates 1 and 3c was further examined against the normal cell line WI-38. The compounds 1 and 3c were further evaluated as multi-targeting kinase inhibitors against EGFR, VEGFR-2 and BRAFV600E, exhibiting promising suppression impact. Additionally, the latter compounds were investigated for their impact on cell cycle and apoptosis induction potential in the MCF-7 cell line. Moreover, the antimicrobial activity of all the new analogues was evaluated against a panel of Gram-positive and Gram-negative bacteria, yeast and fungi in comparison to streptomycin and amphotericin-B as reference drugs. Interestingly, both 1 and 3c showed the most promising microbial inhibitory effect. Molecular docking studies showed promising binding patterns of the compounds 1 and 3c with the prospective targets, EGFR, VEGFR-2 and BRAFV600E. Finally, additional toxicity studies were performed for the new derivatives which showed their good drug-like properties and low toxicity risks in humans. Deregulation of various protein kinases is considered as one of the important factors resulting in cancer development and metastasis, thus multi-targeting the kinase family is one of the most important strategies in current cancer therapy.![]()
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Affiliation(s)
- Ismail M. M. Othman
- Department of Chemistry, Faculty of Science, Al-Azhar University, Assiut 71524, Egypt
| | - Zahra M. Alamshany
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 42805, Jeddah 21551, Saudi Arabia
| | - Nada Y. Tashkandi
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 42805, Jeddah 21551, Saudi Arabia
| | | | - Somaia S. Abd El-Karim
- Department of Therapeutic Chemistry, National Research Centre, Dokki, Cairo 12622, Egypt
| | - Eman S. Nossier
- Department of Pharmaceutical Medicinal Chemistry, Faculty of Pharmacy (Girls), Al-Azhar University, Cairo 11754, Egypt
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11
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Mahmoud HK, Abdelhady HA, Elaasser MM, Hassain DZH, Gomha SM. Microwave-Assisted One-Pot Three Component Synthesis of Some Thiazolyl(Hydrazonoethyl)Thiazoles as Potential Anti-Breast Cancer Agents. Polycycl Aromat Compd 2021. [DOI: 10.1080/10406638.2021.1998146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Huda K. Mahmoud
- Department of Chemistry, Faculty of Science, University of Cairo, Giza, Egypt
| | - Hyam A. Abdelhady
- Department of Chemistry, Faculty of Science, University of Cairo, Giza, Egypt
| | - Mahmoud M. Elaasser
- Regional center for Mycology and Biotechnology, Al-Azhar University, Cairo, Egypt
| | - Doaa Z. H. Hassain
- Department of Chemistry, Faculty of Science, University of Cairo, Giza, Egypt
| | - Sobhi M. Gomha
- Department of Chemistry, Faculty of Science, University of Cairo, Giza, Egypt
- Chemistry Department, Faculty of Science, Islamic University of Madinah, Al-Madinah, Al-Munawwarah, Saudi Arabia
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12
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Synthesis and Biological Evaluation of Thiazolyl-Ethylidene Hydrazino-Thiazole Derivatives: A Novel Heterocyclic System. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11198908] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The reaction of 2-(1-(2-(2-(4-methoxybenzylidene)hydrazinyl)-4-methylthiazol-5-yl)ethylidene)hydrazinecarbothioamide with a range of hydrazonoyl chlorides and α-halo-compounds yielded three new series of thiazole derivatives. Chemical and physical techniques were used to analyze all newly prepared derivatives (1H-NMR, 13C-NMR, FT-IR and mass spectrometry). The potential antimicrobial and anticancer properties of the synthesized derivatives were investigated using various in vitro biological experiments. Most of the thiazole compounds tested were effective against Gram-positive and Gram-negative bacteria. In addition, a minimum inhibition concentration was determined for the antibiotic properties of the most active produced substances. The cytotoxic activities were tested on HepG-2 (liver carcinoma), HCT-116 (colorectal carcinoma) and MDA-MB-231 (breast carcinoma) cell lines in comparison with cisplatin reference drug and using colorimetric MTT assay. The results detected that compound 10c was the most potent against the three tested cell lines. Interestingly, when the tested compounds were evaluated for their toxicity against normal (MRC-5) cells, they exhibited low toxic effects indicating the safe use of most of them that may require further in vivo and pharmacological studies.
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13
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Zhu M, Messaoudi S. Diastereoselective Decarboxylative Alkynylation of Anomeric Carboxylic Acids Using Cu/Photoredox Dual Catalysis. ACS Catal 2021. [DOI: 10.1021/acscatal.1c01600] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Mingxiang Zhu
- Université Paris-Saclay, CNRS, BioCIS, 92290, Châtenay, Malabry, France
| | - Samir Messaoudi
- Université Paris-Saclay, CNRS, BioCIS, 92290, Châtenay, Malabry, France
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14
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Gomha SM, Abdelhady HA, Hassain DZH, Abdelmonsef AH, El-Naggar M, Elaasser MM, Mahmoud HK. Thiazole-Based Thiosemicarbazones: Synthesis, Cytotoxicity Evaluation and Molecular Docking Study. DRUG DESIGN DEVELOPMENT AND THERAPY 2021; 15:659-677. [PMID: 33633443 PMCID: PMC7900779 DOI: 10.2147/dddt.s291579] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 01/20/2021] [Indexed: 02/02/2023]
Abstract
Introduction Hybrid drug design has developed as a prime method for the development of novel anticancer therapies that can theoretically solve much of the pharmacokinetic disadvantages of traditional anticancer drugs. Thus a number of studies have indicated that thiazole-thiophene hybrids and their bis derivatives have important anticancer activity. Mammalian Rab7b protein is a member of the Rab GTPase protein family that controls the trafficking from endosomes to the TGN. Alteration in the Rab7b expression is implicated in differentiation of malignant cells, causing cancer. Methods 1-(4-Methyl-2-(2-(1-(thiophen-2-yl) ethylidene) hydrazinyl) thiazol-5-yl) ethanone was used as building block for synthesis of novel series of 5-(1-(2-(thiazol-2-yl) hydrazono) ethyl) thiazole derivatives. The bioactivities of the synthesized compounds were evaluated with respect to their antitumor activities against MCF-7 tumor cells using MTT assay. Computer-aided docking protocol was performed to study the possible molecular interactions between the newly synthetic thiazole compounds and the active binding site of the target protein Rab7b. Moreover, the in silico prediction of adsorption, distribution, metabolism, excretion (ADME) and toxicity (T) properties of synthesized compounds were carried out using admetSAR tool. Results The results obtained showed that derivatives 9 and 11b have promising activity (IC50 = 14.6 ± 0.8 and 28.3 ± 1.5 µM, respectively) compared to Cisplatin (IC50 = 13.6 ± 0.9 µM). The molecular docking analysis reveals that the synthesized compounds are predicted to be fit into the binding site of the target Rab7b. In summary, the synthetic thiazole compounds 1–17 could be used as potent inhibitors as anticancer drugs. Conclusion Promising anticancer activity of compounds 9 and 11 compared with cisplatin reference drug suggests that these ligands may contribute as lead compounds in search of new anticancer agents to combat chemo-resistance.
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Affiliation(s)
- Sobhi M Gomha
- Chemistry Department, Faculty of Science, Islamic University in Almadinah Almonawara, Almadinah Almonawara, 42351, Saudi Arabia.,Chemistry Department, Faculty of Science, University of Cairo, Giza, Egypt
| | - Hyam A Abdelhady
- Chemistry Department, Faculty of Science, University of Cairo, Giza, Egypt
| | - Doaa Z H Hassain
- Chemistry Department, Faculty of Science, University of Cairo, Giza, Egypt
| | | | - Mohamed El-Naggar
- Chemistry Department, Faculty of Sciences, University of Sharjah, Sharjah, 27272, United Arab Emirates
| | - Mahmoud M Elaasser
- The Regional Center for Mycology and Biotechnology, Al-Azhar University, Cairo, 11371, Egypt
| | - Huda K Mahmoud
- Chemistry Department, Faculty of Science, University of Cairo, Giza, Egypt
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15
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Recent strategies in the synthesis of thiophene derivatives: highlights from the 2012-2020 literature. Mol Divers 2020; 25:2571-2604. [PMID: 32734589 DOI: 10.1007/s11030-020-10128-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 07/21/2020] [Indexed: 10/23/2022]
Abstract
Thiophene-based analogs have been fascinated by a growing number of scientists as a potential class of biologically active compounds. Furthermore, they play a vital role for medicinal chemists to improve advanced compounds with a variety of biological effects. The current review envisioned to highlight some recent and particularly remarkable examples of the synthesis of thiophene derivatives by heterocyclization of various substrates from 2012 on.
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16
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Zhou X, Jia T, Luo Y, Liu H, Zhang F, Zhao Y. Concise synthesis of thiophene C-nucleoside analogues bearing sugar residues and aromatic residues through dimerization and sulfur heterocyclization of sugar alkynes and substituted iodoethynylbenzene. Org Biomol Chem 2020; 18:1800-1805. [PMID: 32080693 DOI: 10.1039/c9ob02717c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The synthesis of thiophene C-nucleoside analogues bearing sugar residues (mono- and disaccharides) and aromatic residues has been achieved by symmetric dimerization of terminal sugar alkynes or unsymmetric dimerization of terminal sugar alkynes and substituted iodoethynylbenzene followed by sulfur heterocyclization in one pot. Homocoupling of terminal sugar alkynes and subsequent sulfur heterocyclization produce thiophene C-nucleoside analogues bearing disaccharides. Unsymmetric dimerization of terminal sugar alkynes and substituted iodoethynylbenzene followed by sulfur heterocyclization give thiophene C-nucleoside analogues bearing monosaccharide and aromatic residues. This approach is concise, general and mild, and is suitable for structurally diverse pyranosides, furanosides, and acyclic sugars. Thirty-two examples have been given and the corresponding products are obtained in moderate to excellent yields.
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Affiliation(s)
- Xiang Zhou
- College of Chemistry, The Key Lab of Chemical Biology and Organic Chemistry, Zhengzhou University, Zhengzhou, Henan 450052, China.
| | - Tongtong Jia
- College of Chemistry, The Key Lab of Chemical Biology and Organic Chemistry, Zhengzhou University, Zhengzhou, Henan 450052, China.
| | - Yang Luo
- College of Chemistry, The Key Lab of Chemical Biology and Organic Chemistry, Zhengzhou University, Zhengzhou, Henan 450052, China.
| | - Hong Liu
- College of Chemistry, The Key Lab of Chemical Biology and Organic Chemistry, Zhengzhou University, Zhengzhou, Henan 450052, China.
| | - Fuyi Zhang
- College of Chemistry, The Key Lab of Chemical Biology and Organic Chemistry, Zhengzhou University, Zhengzhou, Henan 450052, China.
| | - Yufen Zhao
- College of Chemistry, The Key Lab of Chemical Biology and Organic Chemistry, Zhengzhou University, Zhengzhou, Henan 450052, China. and Institute of Drug Discovery Technology, Ningbo University, Ningbo 315211, China
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17
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Thiazole-containing compounds as therapeutic targets for cancer therapy. Eur J Med Chem 2019; 188:112016. [PMID: 31926469 DOI: 10.1016/j.ejmech.2019.112016] [Citation(s) in RCA: 163] [Impact Index Per Article: 32.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 12/20/2019] [Accepted: 12/26/2019] [Indexed: 12/13/2022]
Abstract
In the last few decades, considerable progress has been made in anticancer agents development, and several new anticancer agents of natural and synthetic origin have been produced. Among heterocyclic compounds, thiazole, a 5-membered unique heterocyclic motif containing sulphur and nitrogen atoms, serves as an essential core scaffold in several medicinally important compounds. Thiazole nucleus is a fundamental part of some clinically applied anticancer drugs, such as dasatinib, dabrafenib, ixabepilone, patellamide A, and epothilone. Recently, thiazole-containing compounds have been successfully developed as possible inhibitors of several biological targets, including enzyme-linked receptor(s) located on the cell membrane, (i.e., polymerase inhibitors) and the cell cycle (i.e., microtubular inhibitors). Moreover, these compounds have been proven to exhibit high effectiveness, potent anticancer activity, and less toxicity. This review presents current research on thiazoles and elucidates their biological importance in anticancer drug discovery. The findings may aid researchers in the rational design of more potent and bio-target specific anticancer drug molecules.
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18
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Anti-Tumor Potential of IMP Dehydrogenase Inhibitors: A Century-Long Story. Cancers (Basel) 2019; 11:cancers11091346. [PMID: 31514446 PMCID: PMC6770829 DOI: 10.3390/cancers11091346] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 09/01/2019] [Accepted: 09/02/2019] [Indexed: 01/15/2023] Open
Abstract
The purine nucleotides ATP and GTP are essential precursors to DNA and RNA synthesis and fundamental for energy metabolism. Although de novo purine nucleotide biosynthesis is increased in highly proliferating cells, such as malignant tumors, it is not clear if this is merely a secondary manifestation of increased cell proliferation. Suggestive of a direct causative effect includes evidence that, in some cancer types, the rate-limiting enzyme in de novo GTP biosynthesis, inosine monophosphate dehydrogenase (IMPDH), is upregulated and that the IMPDH inhibitor, mycophenolic acid (MPA), possesses anti-tumor activity. However, historically, enthusiasm for employing IMPDH inhibitors in cancer treatment has been mitigated by their adverse effects at high treatment doses and variable response. Recent advances in our understanding of the mechanistic role of IMPDH in tumorigenesis and cancer progression, as well as the development of IMPDH inhibitors with selective actions on GTP synthesis, have prompted a reappraisal of targeting this enzyme for anti-cancer treatment. In this review, we summarize the history of IMPDH inhibitors, the development of new inhibitors as anti-cancer drugs, and future directions and strategies to overcome existing challenges.
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19
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Tachallait H, Safir Filho M, Marzag H, Bougrin K, Demange L, Martin AR, Benhida R. A straightforward and versatile FeCl3 catalyzed Friedel–Crafts C-glycosylation process. Application to the synthesis of new functionalized C-nucleosides. NEW J CHEM 2019. [DOI: 10.1039/c8nj06300a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Rapid and straightforward access to C-nucleosides using an inexpensive FeCl3 catalyst.
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Affiliation(s)
- Hamza Tachallait
- Laboratoire de Chimie des Plantes et de Synthèse Organique et Bioorganique
- URAC23
- Faculté des Sciences
- 1014 Rabat
- Morocco
| | - Mauro Safir Filho
- Université Côte d’Azur
- CNRS
- Institut de Chimie de Nice UMR 7272
- 06108 Nice
- France
| | - Hamid Marzag
- Université Côte d’Azur
- CNRS
- Institut de Chimie de Nice UMR 7272
- 06108 Nice
- France
| | - Khalid Bougrin
- Laboratoire de Chimie des Plantes et de Synthèse Organique et Bioorganique
- URAC23
- Faculté des Sciences
- 1014 Rabat
- Morocco
| | - Luc Demange
- Université Côte d’Azur
- CNRS
- Institut de Chimie de Nice UMR 7272
- 06108 Nice
- France
| | - Anthony R. Martin
- Université Côte d’Azur
- CNRS
- Institut de Chimie de Nice UMR 7272
- 06108 Nice
- France
| | - Rachid Benhida
- Université Côte d’Azur
- CNRS
- Institut de Chimie de Nice UMR 7272
- 06108 Nice
- France
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20
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Ma Y, Liu S, Xi Y, Li H, Yang K, Cheng Z, Wang W, Zhang Y. Highly stereoselective synthesis of aryl/heteroaryl-C-nucleosides via the merger of photoredox and nickel catalysis. Chem Commun (Camb) 2019; 55:14657-14660. [DOI: 10.1039/c9cc07184a] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A photoredox/nickel dual-catalyzed decarboxylative cross-coupling reaction of anomeric ribosyl/deoxyribosyl acids with aryl/heteroaryl bromides has been developed.
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Affiliation(s)
- Yingying Ma
- State Key Laboratory of Bioengineering Reactor and School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Shihui Liu
- College of Medicine
- Jiaxing University
- Jiaxing 314033
- P. R. China
| | - Yifan Xi
- State Key Laboratory of Bioengineering Reactor and School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Hongrui Li
- State Key Laboratory of Bioengineering Reactor and School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Kai Yang
- State Key Laboratory of Bioengineering Reactor and School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Zhihao Cheng
- State Key Laboratory of Bioengineering Reactor and School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Wei Wang
- State Key Laboratory of Bioengineering Reactor and School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
- Department of Pharmacology and Toxicology and BIO5 Institute
| | - Yongqiang Zhang
- State Key Laboratory of Bioengineering Reactor and School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
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21
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Vogel L, Wonner P, Huber SM. Chalcogen Bonding: An Overview. Angew Chem Int Ed Engl 2018; 58:1880-1891. [PMID: 30225899 DOI: 10.1002/anie.201809432] [Citation(s) in RCA: 334] [Impact Index Per Article: 55.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Indexed: 01/23/2023]
Abstract
In the last few decades, "unusual" noncovalent interactions like anion-π and halogen bonding have emerged as interesting alternatives to the ubiquitous hydrogen bonding in many research areas. This is also true, to a somewhat lesser extent, for chalcogen bonding, the noncovalent interaction involving Lewis acidic chalcogen centers. Herein, we aim to provide an overview on the use of chalcogen bonding in crystal engineering and in solution, with a focus on the recent developments concerning intermolecular chalcogen bonding in solution-phase applications. In the solid phase, chalcogen bonding has been used for the construction of nano-sized structures and the self-assembly of sophisticated self-complementary arrays. In solution, until very recently applications mostly focused on intramolecular interactions which stabilized the conformation of intermediates or reagents. In the last few years, intermolecular chalcogen bonding has increasingly also been exploited in solution, most notably in anion recognition and transport as well as in organic synthesis and organocatalysis.
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Affiliation(s)
- Lukas Vogel
- Faculty of Chemistry and Biochemistry, Ruhr-University Bochum, Universitätsstraße 150, 44801, Bochum, Germany
| | - Patrick Wonner
- Faculty of Chemistry and Biochemistry, Ruhr-University Bochum, Universitätsstraße 150, 44801, Bochum, Germany
| | - Stefan M Huber
- Faculty of Chemistry and Biochemistry, Ruhr-University Bochum, Universitätsstraße 150, 44801, Bochum, Germany
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22
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Affiliation(s)
- Lukas Vogel
- Fakultät für Chemie und Biochemie; Ruhr-Universität Bochum; Universitätsstraße 150 44801 Bochum Deutschland
| | - Patrick Wonner
- Fakultät für Chemie und Biochemie; Ruhr-Universität Bochum; Universitätsstraße 150 44801 Bochum Deutschland
| | - Stefan M. Huber
- Fakultät für Chemie und Biochemie; Ruhr-Universität Bochum; Universitätsstraße 150 44801 Bochum Deutschland
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23
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Angeli A, Carta F, Bartolucci G, Supuran CT. Synthesis of novel acyl selenoureido benzensulfonamides as carbonic anhydrase I, II, VII and IX inhibitors. Bioorg Med Chem 2017; 25:3567-3573. [DOI: 10.1016/j.bmc.2017.05.014] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 05/03/2017] [Accepted: 05/05/2017] [Indexed: 01/16/2023]
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24
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Maier L, Khirsariya P, Hylse O, Adla SK, Černová L, Poljak M, Krajčovičová S, Weis E, Drápela S, Souček K, Paruch K. Diastereoselective Flexible Synthesis of Carbocyclic C-Nucleosides. J Org Chem 2017; 82:3382-3402. [PMID: 28267331 DOI: 10.1021/acs.joc.6b02594] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Carbocyclic C-nucleosides are quite rare. Our route enables flexible preparation of three classes of these nucleoside analogs from common precursors-properly substituted cyclopentanones, which can be prepared racemic (in six steps) or optically pure (in ten steps) from inexpensive norbornadiene. The methodology allows flexible manipulation of individual positions around the cyclopentane ring, namely highly diastereoselective installation of carbo- and heterocyclic substituents at position 1', orthogonal functionalization of position 5', and efficient inversion of stereochemistry at position 2'. Newly prepared carbocyclic C-analog of tubercidine, profiled in MCF7 (breast cancer) and HFF1 (human foreskin fibroblasts) cell cultures, is less potent than tubercidine itself, but more selectively toxic toward the tumorigenic cells.
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Affiliation(s)
- Lukáš Maier
- Department of Chemistry, CZ Openscreen, Faculty of Science, Masaryk University , Kamenice 5/A8, 625 00 Brno, Czech Republic.,International Center for Clinical Research, St. Anne's University Hospital Brno , Pekařská 53, 656 91 Brno, Czech Republic
| | - Prashant Khirsariya
- Department of Chemistry, CZ Openscreen, Faculty of Science, Masaryk University , Kamenice 5/A8, 625 00 Brno, Czech Republic.,International Center for Clinical Research, St. Anne's University Hospital Brno , Pekařská 53, 656 91 Brno, Czech Republic
| | - Ondřej Hylse
- Department of Chemistry, CZ Openscreen, Faculty of Science, Masaryk University , Kamenice 5/A8, 625 00 Brno, Czech Republic.,International Center for Clinical Research, St. Anne's University Hospital Brno , Pekařská 53, 656 91 Brno, Czech Republic
| | - Santosh Kumar Adla
- Department of Chemistry, CZ Openscreen, Faculty of Science, Masaryk University , Kamenice 5/A8, 625 00 Brno, Czech Republic
| | - Lenka Černová
- Department of Chemistry, CZ Openscreen, Faculty of Science, Masaryk University , Kamenice 5/A8, 625 00 Brno, Czech Republic
| | - Michal Poljak
- Department of Chemistry, CZ Openscreen, Faculty of Science, Masaryk University , Kamenice 5/A8, 625 00 Brno, Czech Republic
| | - Soňa Krajčovičová
- Department of Chemistry, CZ Openscreen, Faculty of Science, Masaryk University , Kamenice 5/A8, 625 00 Brno, Czech Republic
| | - Erik Weis
- Department of Chemistry, CZ Openscreen, Faculty of Science, Masaryk University , Kamenice 5/A8, 625 00 Brno, Czech Republic
| | - Stanislav Drápela
- Department of Cytokinetics, Institute of Biophysics, Academy of Sciences of the Czech Republic , Královopolská 135, 612 00 Brno, Czech Republic
| | - Karel Souček
- International Center for Clinical Research, St. Anne's University Hospital Brno , Pekařská 53, 656 91 Brno, Czech Republic.,Department of Cytokinetics, Institute of Biophysics, Academy of Sciences of the Czech Republic , Královopolská 135, 612 00 Brno, Czech Republic
| | - Kamil Paruch
- Department of Chemistry, CZ Openscreen, Faculty of Science, Masaryk University , Kamenice 5/A8, 625 00 Brno, Czech Republic.,International Center for Clinical Research, St. Anne's University Hospital Brno , Pekařská 53, 656 91 Brno, Czech Republic
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25
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Angeli A, Tanini D, Viglianisi C, Panzella L, Capperucci A, Menichetti S, Supuran CT. Evaluation of selenide, diselenide and selenoheterocycle derivatives as carbonic anhydrase I, II, IV, VII and IX inhibitors. Bioorg Med Chem 2017; 25:2518-2523. [PMID: 28302505 DOI: 10.1016/j.bmc.2017.03.013] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 02/27/2017] [Accepted: 03/05/2017] [Indexed: 01/11/2023]
Abstract
A series of selenides, diselenides and organoselenoheterocycles were evaluated as carbonic anhydrase (CA, EC 4.2.1.1) inhibitors against the human (h) isoforms hCA I, II, IV, VII and IX, involved in a variety of diseases among which glaucoma, retinitis pigmentosa, epilepsy, arthritis and tumors etc. These investigated compounds showed inhibitory action against these isoforms and some of them were selective for inhibiting the cytosolic over the membrane-bound isoforms, thus making them interesting leads for the development of isoform-selective inhibitors.
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Affiliation(s)
- Andrea Angeli
- Università degli Studi di Firenze, NEUROFARBA Dept., Sezione di Scienze Farmaceutiche, Via Ugo Schiff 6, 50019 Sesto Fiorentino, Florence, Italy
| | - Damiano Tanini
- Università degli Studi di Firenze, Department of Chemistry "Ugo Schiff", Via della Lastruccia 3-13, I-50019 Sesto Fiorentino, Italy
| | - Caterina Viglianisi
- Università degli Studi di Firenze, Department of Chemistry "Ugo Schiff", Via della Lastruccia 3-13, I-50019 Sesto Fiorentino, Italy
| | - Lucia Panzella
- University of Naples "Federico II", Department of Chemical Sciences, Via Cintia 4, I-80126 Naples, Italy
| | - Antonella Capperucci
- Università degli Studi di Firenze, Department of Chemistry "Ugo Schiff", Via della Lastruccia 3-13, I-50019 Sesto Fiorentino, Italy
| | - Stefano Menichetti
- Università degli Studi di Firenze, Department of Chemistry "Ugo Schiff", Via della Lastruccia 3-13, I-50019 Sesto Fiorentino, Italy
| | - Claudiu T Supuran
- Università degli Studi di Firenze, NEUROFARBA Dept., Sezione di Scienze Farmaceutiche, Via Ugo Schiff 6, 50019 Sesto Fiorentino, Florence, Italy.
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Beno BR, Yeung KS, Bartberger MD, Pennington LD, Meanwell NA. A Survey of the Role of Noncovalent Sulfur Interactions in Drug Design. J Med Chem 2015; 58:4383-438. [DOI: 10.1021/jm501853m] [Citation(s) in RCA: 468] [Impact Index Per Article: 52.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Brett R. Beno
- Department of Computer-Assisted Drug Design, Bristol-Myers Squibb Research and Development, 5 Research Parkway Wallingford Connecticut 06492, United States
| | - Kap-Sun Yeung
- Department of Discovery Chemistry, Bristol-Myers Squibb Research and Development, 5 Research Parkway Wallingford Connecticut 06492, United States
| | - Michael D. Bartberger
- Department of Therapeutic Discovery, Amgen Inc., One Amgen Center Drive Thousand Oaks California 91320, United States
| | - Lewis D. Pennington
- Department of Therapeutic Discovery, Amgen Inc., One Amgen Center Drive Thousand Oaks California 91320, United States
| | - Nicholas A. Meanwell
- Department of Discovery Chemistry, Bristol-Myers Squibb Research and Development, 5 Research Parkway Wallingford Connecticut 06492, United States
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Reid RC, Yau MK, Singh R, Lim J, Fairlie DP. Stereoelectronic effects dictate molecular conformation and biological function of heterocyclic amides. J Am Chem Soc 2014; 136:11914-7. [PMID: 25102224 DOI: 10.1021/ja506518t] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Heterocycles adjacent to amides can have important influences on molecular conformation due to stereoelectronic effects exerted by the heteroatom. This was shown for imidazole- and thiazole-amides by comparing low energy conformations (ab initio MP2 and DFT calculations), charge distribution, dipole moments, and known crystal structures which support a general principle. Switching a heteroatom from nitrogen to sulfur altered the amide conformation, producing different three-dimensional electrostatic surfaces. Differences were attributed to different dipole and orbital alignments and spectacularly translated into opposing agonist vs antagonist functions in modulating a G-protein coupled receptor for inflammatory protein complement C3a on human macrophages. Influences of the heteroatom were confirmed by locking the amide conformation using fused bicyclic rings. These findings show that stereoelectronic effects of heterocycles modulate molecular conformation and can impart strikingly different biological properties.
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Affiliation(s)
- Robert C Reid
- Division of Chemistry and Structural Biology, Institute for Molecular Bioscience, The University of Queensland , Brisbane, QLD 4072, Australia
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28
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Reddy CR, Krishna G, Reddy MD. Synthesis of substituted 3-furanoates from MBH-acetates of acetylenic aldehydes via tandem isomerization–deacetylation–cycloisomerization: access to Elliott's alcohol. Org Biomol Chem 2014; 12:1664-70. [DOI: 10.1039/c3ob42396d] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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29
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Nicolas L, Angibaud P, Stansfield I, Meerpoel L, Reymond S, Cossy J. Triphenylphosphine: a catalyst for the synthesis of C-aryl furanosides from furanosyl halides. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2013.12.035] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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30
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Nicolas L, Izquierdo E, Angibaud P, Stansfield I, Meerpoel L, Reymond S, Cossy J. Cobalt-Catalyzed Diastereoselective Synthesis of C-Furanosides. Total Synthesis of (−)-Isoaltholactone. J Org Chem 2013; 78:11807-14. [DOI: 10.1021/jo401845q] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Lionel Nicolas
- Laboratoire
de Chimie Organique, ESPCI ParisTech, UMR CNRS 7084, 10 rue Vauquelin, 75231 Paris Cedex 05, France
| | - Eva Izquierdo
- Laboratoire
de Chimie Organique, ESPCI ParisTech, UMR CNRS 7084, 10 rue Vauquelin, 75231 Paris Cedex 05, France
| | - Patrick Angibaud
- Janssen Research & Development, a Division of Janssen-Cilag, BP615, Chaussée du Vexin, 27106 Val de Reuil, France
| | - Ian Stansfield
- Janssen Research & Development, a Division of Janssen-Cilag, BP615, Chaussée du Vexin, 27106 Val de Reuil, France
| | - Lieven Meerpoel
- Janssen Research & Development, a Division of Janssen Pharmaceutica N.V., Turnhoutsweg 30, 2340 Beerse, Belgium
| | - Sébastien Reymond
- Laboratoire
de Chimie Organique, ESPCI ParisTech, UMR CNRS 7084, 10 rue Vauquelin, 75231 Paris Cedex 05, France
| | - Janine Cossy
- Laboratoire
de Chimie Organique, ESPCI ParisTech, UMR CNRS 7084, 10 rue Vauquelin, 75231 Paris Cedex 05, France
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32
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Maji B, Mayr H. Structures and Reactivities of O-Methylated Breslow Intermediates. Angew Chem Int Ed Engl 2012; 51:10408-12. [DOI: 10.1002/anie.201204524] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Indexed: 11/12/2022]
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33
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Midtkandal RR, Redpath P, Trammell SAJ, Macdonald SJF, Brenner C, Migaud ME. Novel synthetic route to the C-nucleoside, 2-deoxy benzamide riboside. Bioorg Med Chem Lett 2012; 22:5204-7. [PMID: 22795628 PMCID: PMC3683580 DOI: 10.1016/j.bmcl.2012.06.069] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Revised: 06/20/2012] [Accepted: 06/22/2012] [Indexed: 11/30/2022]
Abstract
2-Deoxy-C-nucleosides are a subcategory of C-nucleosides that has not been explored extensively, largely because the synthesis is less facile. Flexible synthetic procedures giving access to 2-deoxy-C-nucleosides are therefore of interest. To exemplify the versatility and highlight the limitations of a synthetic route recently developed to that effect, the first synthesis of 2-deoxy benzamide riboside is reported. Biological properties of this novel C-nucleoside are also discussed.
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Affiliation(s)
- Rebecca R Midtkandal
- Queen's University Belfast, John King Laboratory, School of Pharmacy, Lisburn Road, Belfast, BT9 7BL, Northern Ireland, UK
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35
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Meanwell NA. Synopsis of Some Recent Tactical Application of Bioisosteres in Drug Design. J Med Chem 2011; 54:2529-91. [DOI: 10.1021/jm1013693] [Citation(s) in RCA: 1876] [Impact Index Per Article: 144.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Nicholas A. Meanwell
- Department of Medicinal Chemistry, Bristol-Myers Squibb Pharmaceutical Research and Development, 5 Research Parkway, Wallingford, Connecticut 06492, United States
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36
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Hirsch BM, Du Z, Li X, Sylvester JA, Wesdemiotis C, Wang Z, Zheng W. Potent sirtuin inhibition bestowed by l-2-amino-7-carboxamidoheptanoic acid (l-ACAH), a Nε-acetyl-lysine analog. MEDCHEMCOMM 2011. [DOI: 10.1039/c0md00212g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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37
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González FV, Jain A, Rodríguez S, Sáez JA, Vicent C, Peris G. Stereoisomerization of β-Hydroxy-α-sulfenyl-γ-butyrolactones Controlled by Two Concomitant 1,4-Type Nonbonded Sulfur−Oxygen Interactions As Analyzed by X-ray Crystallography. J Org Chem 2010; 75:5888-94. [DOI: 10.1021/jo1009454] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Florenci V. González
- Departament de Química Inorgànica i Orgànica and Serveis Centrals d’Instrumentació Científica, Universitat Jaume I, 12080 Castelló, Spain
| | - Amit Jain
- Departament de Química Inorgànica i Orgànica and Serveis Centrals d’Instrumentació Científica, Universitat Jaume I, 12080 Castelló, Spain
| | - Santiago Rodríguez
- Departament de Química Inorgànica i Orgànica and Serveis Centrals d’Instrumentació Científica, Universitat Jaume I, 12080 Castelló, Spain
| | - José A. Sáez
- Departament de Química Inorgànica i Orgànica and Serveis Centrals d’Instrumentació Científica, Universitat Jaume I, 12080 Castelló, Spain
| | - Cristian Vicent
- Departament de Química Inorgànica i Orgànica and Serveis Centrals d’Instrumentació Científica, Universitat Jaume I, 12080 Castelló, Spain
| | - Gabriel Peris
- Departament de Química Inorgànica i Orgànica and Serveis Centrals d’Instrumentació Científica, Universitat Jaume I, 12080 Castelló, Spain
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38
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Lu J, Li NS, Koo SC, Piccirilli JA. Synthesis of Pyridine, Pyrimidine and Pyridinone C-Nucleoside Phosphoramidites for Probing Cytosine Function in RNA. J Org Chem 2009; 74:8021-30. [DOI: 10.1021/jo9016919] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jun Lu
- Howard Hughes Medical Institute, Department of Biochemistry and Molecular Biology and Department of Chemistry, University of Chicago, 929 East 57th Street, Chicago, Illinois 60637
| | - Nan-Sheng Li
- Howard Hughes Medical Institute, Department of Biochemistry and Molecular Biology and Department of Chemistry, University of Chicago, 929 East 57th Street, Chicago, Illinois 60637
| | - Selene C. Koo
- Howard Hughes Medical Institute, Department of Biochemistry and Molecular Biology and Department of Chemistry, University of Chicago, 929 East 57th Street, Chicago, Illinois 60637
| | - Joseph A. Piccirilli
- Howard Hughes Medical Institute, Department of Biochemistry and Molecular Biology and Department of Chemistry, University of Chicago, 929 East 57th Street, Chicago, Illinois 60637
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39
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Affiliation(s)
- Michal Hocek
- Department of Chemistry, WestChem, University of Glasgow, Glasgow G12 8QQ, United Kingdom, and Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Gilead & IOCB Research Center, CZ-16610 Prague 6, Czech Republic
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40
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Popsavin M, Spaić S, Svirčev M, Kojić V, Bogdanović G, Pejanović V, Popsavin V. Synthesis of highly cytotoxic tiazofurin mimics bearing a 2,3-anhydro function in the furanose ring. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.06.100] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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41
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42
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Yadav LDS, Rai VK. An expeditious synthesis of benzoxazine-2-thione c-nucleosides Via Cu(OTf)2-mediated dehydrazinative beta-glycosylation. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2009; 27:1227-37. [PMID: 19003568 DOI: 10.1080/15257770802458212] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
A novel expeditious synthetic protocol for 1,3-benzoxazine-2-thione C-nucleosides via Cu(OTf)2-mediated dehydrazinative beta-glycosylation of 4-hydrazino-2H-benz[e]-1,3-oxazine-2-thiones with unprotected D-ribose is reported.
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Affiliation(s)
- Lal Dhar S Yadav
- Green Synthesis Lab, Department of Chemistry, University of Allahabad, Allahabad, India.
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43
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Hua G, Woollins JD. Formation and reactivity of phosphorus-selenium rings. Angew Chem Int Ed Engl 2009; 48:1368-77. [PMID: 19053094 DOI: 10.1002/anie.200800572] [Citation(s) in RCA: 84] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Lawesson reagent for selenium fans: Phosphorus selenium heterocycles and, in particular, [PhPSe(2)](2) (known as Woollins' reagent) are proving valuable in the synthesis of new heterocycles and for the insertion of selenium into organic substrates. Incorporation of phosphorus and selenium atoms into the products leads to a surprising variety of structures.Phosphorus-selenium ring chemistry has developed to include the synthesis of some exciting new motifs and provided organic chemists with a new reagent, [PhPSe(2)](2), which has become known as Woollins' reagent.
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Affiliation(s)
- Guoxiong Hua
- School of Chemistry, University of St. Andrews, North Haugh, St. Andrews, Fife, UK
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44
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Li Y, Hua GX, Slawin AMZ, Woollins JD. The X-ray crystal structures of primary aryl substituted selenoamides. Molecules 2009; 14:884-92. [PMID: 19255546 PMCID: PMC6253768 DOI: 10.3390/molecules14020884] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2008] [Revised: 02/13/2009] [Accepted: 02/19/2009] [Indexed: 11/17/2022] Open
Abstract
The X-ray structures of 12 primary selenoamides are reported. Metric parameters are provided, together with an illustration of the range of hydrogen bonding motifs.
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Affiliation(s)
| | | | | | - J. Derek Woollins
- School of Chemistry, University of St Andrews, St Andrews, Fife, Scotland, KY16 9ST, UK
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45
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Affiliation(s)
- Guoxiong Hua
- School of Chemistry, University of St Andrews, North Haugh, St Andrews, Fife, KY16 9ST (Großbritannien), Fax: (+44) 1334‐463‐384
| | - J. Derek Woollins
- School of Chemistry, University of St Andrews, North Haugh, St Andrews, Fife, KY16 9ST (Großbritannien), Fax: (+44) 1334‐463‐384
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46
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Štefko M, Pohl R, Klepetářová B, Hocek M. A Modular Methodology for the Synthesis of 4- and 3-Substituted Benzene and Aniline C-Ribonucleosides. European J Org Chem 2008. [DOI: 10.1002/ejoc.200701168] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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47
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Soave R, Barzaghi M, Destro R. Progress in the understanding of drug-receptor interactions, part 2: experimental and theoretical electrostatic moments and interaction energies of an angiotensin II receptor antagonist (C30H30N6(O)3S). Chemistry 2007; 13:6942-56. [PMID: 17539033 DOI: 10.1002/chem.200601516] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A combined experimental and theoretical charge density study of an angiotensin II receptor antagonist (1) is presented focusing on electrostatic properties such as atomic charges, molecular electric moments up to the fourth rank and energies of the intermolecular interactions, to gain an insight into the physical nature of the drug-receptor interaction. Electrostatic properties were derived from both the experimental electron density (multipole refinement of X-ray data collected at T=17 K) and the ab initio wavefunction (single molecule and fully periodic calculations at the DFT level). The relevance of SO and SN intramolecular interactions on the activity of 1 is highlighted by using both the crystal and gas-phase geometries and their electrostatic nature is documented by means of QTAIM atomic charges. The derived electrostatic properties are consistent with a nearly spherical electron density distribution, characterised by an intermingling of electropositive and -negative zones rather than by a unique electrophilic region opposed to a nucleophilic area. This makes the first molecular moment scarcely significant and ill-determined, whereas the second moment is large, significant and highly reliable. A comparison between experimental and theoretical components of the third electric moment shows a few discrepancies, whereas the agreement for the fourth electric moment is excellent. The most favourable intermolecular bond is show to be an NHN hydrogen bond with an energy of about 50 kJ mol(-1). Key pharmacophoric features responsible for attractive electrostatic interactions include CHX hydrogen bonds. It is shown that methyl and methylene groups, known to be essential for the biological activity of the drug, provide a significant energetic contribution to the total binding energy. Dispersive interactions are important at the thiophene and at both the phenyl fragments. The experimental estimates of the electrostatic contribution to the intermolecular interaction energies of six molecular pairs, obtained by a new model proposed by Spackman, predict the correct relative electrostatic energies with no exceptions.
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Affiliation(s)
- Raffaella Soave
- CNR-ISTM, Istituto di Scienze e Tecnologie Molecolari, Via Golgi 19, 20133 Milano, Italy.
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48
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Popsavin M, Spaić S, Svircev M, Kojić V, Bogdanović G, Popsavin V. Synthesis and antitumour activity of new tiazofurin analogues bearing a 2,3-anhydro functionality in the furanose ring. Bioorg Med Chem Lett 2007; 17:4123-7. [PMID: 17543526 DOI: 10.1016/j.bmcl.2007.05.050] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2007] [Revised: 05/15/2007] [Accepted: 05/17/2007] [Indexed: 12/01/2022]
Abstract
This paper describes a divergent de novo synthesis of 2-(2,3-anhydro-beta-dribofuranosyl)thiazole-4-carboxamide (2',3'-anhydro-tiazofurin) and the corresponding alpha- and beta-homo-C-nucleosides, as well as evaluation of their antitumour activities in vitro.
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Affiliation(s)
- Mirjana Popsavin
- Department of Chemistry, Faculty of Sciences, University of Novi Sad, Trg D. Obradovića 3, 21000 Novi Sad, Serbia.
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49
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Destro R, Soave R, Barzaghi M, Lo Presti L. Progress in the understanding of drug-receptor interactions, Part 1: experimental charge-density study of an angiotensin II receptor antagonist (C30H30N6O3S) at T = 17 K. Chemistry 2007; 11:4621-34. [PMID: 15915518 DOI: 10.1002/chem.200400964] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
An experimental study of the electron-density distribution rho(r) in an angiotensin II receptor antagonist 1 has been made on the basis of single-crystal X-ray diffraction data collected at a low temperature. The crystal structure of 1 consists of infinite ribbons in which molecules are connected by an N-H...N hydrogen bond and several interactions of the C-H...O, C-H...N, and C-H...S type. The molecular conformation, characterized by the syn orientation of a tetrazole and a pyrimidinone ring with respect to a phenyl spacer group, is stabilized by two short SO and SN intramolecular contacts between a substituted thiophene fragment and the other two heterocycles of 1. The electrostatic nature of these interactions is documented. Furthermore, the Laplacian of rho(r) in the plane defined by the sulfur, oxygen, and nitrogen atoms involved in these interactions shows their strongly directional character as the regions of charge concentration on the valence shell of the nitrogen and oxygen atoms directly face the regions of charge depletion on the valence shell of the sulfur atom. All the chemical bonds and the relevant intra- and intermolecular interactions of 1 have been quantitatively described by the topological analysis of rho(r). Simple relationships between the bond path lengths (R(b)) and the values of rho at the bond critical points (rho(bcp)) have been obtained for the 28 C-C bonds, the seven N-C bonds, and the four O-C bonds. For the first two classes of bonds the relationship is in the form of a straight line, whose parameters, for the C-C bonds, agree, within experimental uncertainty, with those previously derived in our laboratory from a 19 K X-ray diffraction study of crystals of a different compound. Maps of the molecular electrostatic potential phi(r) derived from the experimental charge density display features that are important for the drug-receptor recognition of 1.
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Affiliation(s)
- Riccardo Destro
- Dipartimento di Chimica Fisica ed Elettrochimica, Universita' di Milano, Italy.
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50
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Novak P, Pohl R, Kotora M, Hocek M. Synthesis of C-Aryldeoxyribosides by [2 + 2 + 2]-Cyclotrimerization Catalyzed by Rh, Ni, Co, and Ru Complexes. Org Lett 2006; 8:2051-4. [PMID: 16671779 DOI: 10.1021/ol060454m] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] A novel approach to the synthesis of functionalized C-nucleosides was developed. Cyclotrimerization of C-alkynyldeoxyriboside with a variety of substituted 1,6-heptadiynes to the corresponding C-aryldeoxyribosides was catalyzed by various transition metal complexes (Rh, Ir, Co, Ru, and Ni). The most general catalyst proved to be RhCl(PPh(3))(3), which could catalyze most of the cyclotrimerizations in high yields (52-95%).
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Affiliation(s)
- Petr Novak
- Department of Organic and Nuclear Chemistry, Faculty of Science, Charles University, Prague, Czech Republic
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