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Wang F, Shen Y, Hu H, Wang X, Wu H, Liu Y. Copper(II)-catalyzed indolizines formation followed by dehydrogenative functionalization cascade to synthesize 1-bromoindolizines. J Org Chem 2014; 79:9556-66. [PMID: 25233481 DOI: 10.1021/jo501626b] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A one-pot, three-component cascade reaction between pyridine, α-acylmethylbromide, and maleic anhydride leading to direct access of 1-bromoindolizines in high yields has been developed. This protocol is accomplished via a reaction sequence of 1,3-dipolar cycloaddition of the pyridinium ylide with maleic anhydride, oxidative decarboxylation of the primary cycloadduct, and dehydrogenative bromination of the resulting 1-unsubstituted indolizine. Copper chloride was used as a catalyst and oxygen as the terminal oxidant. This reaction represents the first example of transition-metal-catalyzed direct dehydrogenative bromination of indolizine at the C-1 position. Moreover, the obtained 1-bromoindolizines can be transformed to other 1-substituted indolizines such as 1-arylindolizines via a simple reaction process.
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Affiliation(s)
- Fuyao Wang
- Jiangsu Key Laboratory of Green Synthetic for Functional Materials and School of Chemistry and Chemical Engineering, Jiangsu Normal University , Xuzhou 221116, Jiangsu, P. R. China
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Amaral MF, Deliberto LA, de Souza CR, Naal RM, Naal Z, Clososki GC. Synthesis, photophysical, and electrochemical properties of 2,5-diaryl-indolizines. Tetrahedron 2014. [DOI: 10.1016/j.tet.2013.11.105] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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3
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Xia JB, You SL. Synthesis of 3-Haloindolizines by Copper(II) Halide Mediated Direct Functionalization of Indolizines. Org Lett 2009; 11:1187-90. [DOI: 10.1021/ol9000872] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ji-Bao Xia
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032, China
| | - Shu-Li You
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032, China
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Xiang J, Xie H, Wen D, Dang Q, Bai X. Synthesis of Pyrido[2,3-e]pyrrolo[1,2-a]pyrazine Derivatives via Tandem Iminium Cyclization and Smiles Rearrangement. J Org Chem 2008; 73:3281-3. [DOI: 10.1021/jo702754r] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jinbao Xiang
- The Center for Combinatorial Chemistry and Drug Discovery, Jilin University, 75 Haiwai St., Changchun, Jilin 130012, P. R. China ;
| | - Hongxiang Xie
- The Center for Combinatorial Chemistry and Drug Discovery, Jilin University, 75 Haiwai St., Changchun, Jilin 130012, P. R. China ;
| | - Dongsheng Wen
- The Center for Combinatorial Chemistry and Drug Discovery, Jilin University, 75 Haiwai St., Changchun, Jilin 130012, P. R. China ;
| | - Qun Dang
- The Center for Combinatorial Chemistry and Drug Discovery, Jilin University, 75 Haiwai St., Changchun, Jilin 130012, P. R. China ;
| | - Xu Bai
- The Center for Combinatorial Chemistry and Drug Discovery, Jilin University, 75 Haiwai St., Changchun, Jilin 130012, P. R. China ;
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Goswami S, Maity AC. Oxidative Removal of Heterocyclic Alkyl or Sugar Side Chain by Microwave: A Simple Step to Xanthopterin, 6-Formylpterin, and 3-Hydroxymethyl-2(1H)-quinoxalinone. CHEM LETT 2007. [DOI: 10.1246/cl.2007.1118] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Meketa ML, Weinreb SM, Nakao Y, Fusetani N. Application of a 6pi-1-azatriene electrocyclization strategy to the total synthesis of the marine sponge metabolite ageladine A and biological evaluation of synthetic analogues. J Org Chem 2007; 72:4892-9. [PMID: 17539689 DOI: 10.1021/jo0707232] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A 12-step synthesis of the angiogenesis inhibitory marine metabolite ageladine A is reported. The key steps include a 6pi-1-azatriene electrocyclization for formation of the pyridine ring and a Suzuki-Miyaura coupling of N-Boc-pyrrole-2-boronic acid with a chloroimidazopyridine. In addition, an assessment of the biological activity of a variety of synthetic analogues of ageladine A prepared during this synthesis is described.
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Affiliation(s)
- Matthew L Meketa
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
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Yano S, Kazuno H, Suzuki N, Emura T, Wierzba K, Yamashita JI, Tada Y, Yamada Y, Fukushima M, Asao T. Synthesis and evaluation of 6-methylene-bridged uracil derivatives. Part 1: Discovery of novel orally active inhibitors of human thymidine phosphorylase. Bioorg Med Chem 2004; 12:3431-41. [PMID: 15186829 DOI: 10.1016/j.bmc.2004.04.036] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2004] [Revised: 04/28/2004] [Accepted: 04/29/2004] [Indexed: 11/29/2022]
Abstract
A series of novel 6-methylene-bridged uracil derivatives have been prepared as inhibitors of human thymidine phosphorylase (TP). To enhance the in vivo antitumor activity of fluorinated pyrimidine 2'-deoxyribonucleosides such as 2'-deoxy-5-(trifluoromethyl)uridine (F(3)dThd), a potent TP inhibitor preventing their degradation to an inactive compound, has become a target of medicinal chemistry. We present here the synthesis and evaluation of novel human TP inhibitors. Introduction of an N-substituted aminomethyl side chain at the 6-position of 5-chlorouracil has improved water solubility and enhanced inhibitory activity compared with the known TP inhibitor, 6-amino-5-chlorouracil. Compound 42 was reasonably well absorbed in mice after oral administration. When combined with F(3)dThd, compound 42 exerted its TP inhibitory potency by increasing the maximum plasma concentrations of the former as evidenced in experiments with monkeys. Positive changes in pharmacokinetic profile were accompanied by the enhanced in vivo antitumor activity of this combination when compared to F(3)dThd alone, in mice bearing human tumor xenografts. Both biochemical and pharmacological effects appeared to fit the concept as anticipated.
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Affiliation(s)
- Shingo Yano
- Hanno Research Center, Taiho Pharmaceutical Co., Ltd, 1-27 Misugidai, Hanno-shi, Saitama 357-8527, Japan.
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Dupuy M, Pinguet F, Chavignon O, Chezal JM, Teulade JC, Chapat JP, Blache Y. Synthesis and in vitro cytotoxic evaluation of new derivatives of pyrido[1,2-a]benzimidazolic ring system: the pyrido[1',2':1,2]imidazo[4,5-h]quinazolines. Chem Pharm Bull (Tokyo) 2001; 49:1061-5. [PMID: 11558586 DOI: 10.1248/cpb.49.1061] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Access to the original series of pyrido[1',2':1,2]imidazo[4,5-h]quinazoline was developed from a 1,3-dicarbonyl unit with some "N-C-N" bisnucleophilic reagents and the derivatives obtained were evaluated for in vitro cytotoxic activities against HL60 and A2780 cells. All compounds exhibited cytotoxic activities on resistant cell lines (MDR+; HL60R and A2780R) with no resistance phenomena.
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Affiliation(s)
- M Dupuy
- Laboratoire de Chimie organique Pharmaceutique, E.A. 2414, Faculté de Pharmacie, Montpellier, France
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Minguez JM, Vaquero JJ, Alvarez-Builla J, Castaño O, Andrés JL. Pyrrolodiazines. 5. Synthesis, Structure, and Chemistry of Pyrrolo[1,2-c]pyrimidine. Dipolar Cycloaddition of Pyrrolo[1,2-c]pyrimidinium Ylides. J Org Chem 1999. [DOI: 10.1021/jo9907080] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- José M. Minguez
- Departamento de Química Orgánica and Quimica Fisica, Universidad de Alcalá, 28871-Alcalá de Henares, Madrid, Spain
| | - Juan J. Vaquero
- Departamento de Química Orgánica and Quimica Fisica, Universidad de Alcalá, 28871-Alcalá de Henares, Madrid, Spain
| | - Julio Alvarez-Builla
- Departamento de Química Orgánica and Quimica Fisica, Universidad de Alcalá, 28871-Alcalá de Henares, Madrid, Spain
| | - Obis Castaño
- Departamento de Química Orgánica and Quimica Fisica, Universidad de Alcalá, 28871-Alcalá de Henares, Madrid, Spain
| | - José L. Andrés
- Vapor Universitario, Facultad de Ciencias, Universidad Nacional de Educación a Distancia (UNED), C/Colón, 114, 0822-Tarrasa, Spain
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Synthesis of new pyrrolo[1,2-a]quinoxalines: potential non-peptide glucagon receptor antagonists. Eur J Med Chem 1998. [DOI: 10.1016/s0223-5234(98)80063-9] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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11
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Blache Y, Gueiffier A, Elhakmaoui A, Viols H, Chapat JP, Chavignon O, Teulade JC, Grassy G, Dauphin G, Carpy A. Synthesis and reactivity of pyrrolo[1,2-α]quinoxalines. Crystal structure and AM1 calculation. J Heterocycl Chem 1995. [DOI: 10.1002/jhet.5570320437] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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