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Li S, Yang W, Ji M, Cai J, Chen J. A new and efficient protocol for the synthesis of the key intermediate of Palbociclib. JOURNAL OF CHEMICAL RESEARCH 2019. [DOI: 10.1177/1747519819831858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A new and efficient synthesis of 6-bromo-8-cyclopentyl-5-methyl-2-(methylsulfinyl)-pyrido[2,3-d]pyrimidin-7(8H)-one, a key intermediate of Palbociclib, starting from thiouracil was described. This protocol involved methylation, nucleophilic substitution, bromination, nucleophilic substitution, Heck reaction, ring closure, oxidation, and bromination to afford a key intermediate of Palbociclib with approximately 35% overall yield. The advantages of this developed synthetic strategy included improved overall yield, inexpensive starting materials, and readily controllable and cleaner reaction conditions.
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Affiliation(s)
- Shuting Li
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, P.R. China
| | - Wanfeng Yang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, P.R. China
| | - Min Ji
- School of Biological Science & Medical Engineering, Southeast University, Nanjing, P.R. China
| | - Jin Cai
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, P.R. China
| | - Junqing Chen
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, P.R. China
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2
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Aliaga ME, De la Fuente JR, García-Rio L, Rojas-Romo C, Uribe I, Díaz-Hernández D, Fierro A, Cañete. Á. Modulation of Lactam-Lactim Tautomerism of Quinoxalin-2-one Induced by Cucurbit[7]uril: A Comparative Study with Oxazin-2-one. ChemistrySelect 2018. [DOI: 10.1002/slct.201801628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Margarita E. Aliaga
- Departamento de Química Física; Pontificia Universidad Católica de Chile; Av. Vicuña Mackenna 4860, Casilla 306 Santiago 6094411, Macul Chile
| | - Julio R. De la Fuente
- Departamento de Química Orgánica y Fisicoquímica; Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Casilla 223; Santiago 1 Chile
| | - Luis García-Rio
- Departamento de Química Física, Centro de Investigación en Química Biológica y Materiales Moleculares (CIQUS); Universidad de Santiago; 15782 Santiago Spain
| | - Carlos Rojas-Romo
- Departamento de Química Física; Pontificia Universidad Católica de Chile; Av. Vicuña Mackenna 4860, Casilla 306 Santiago 6094411, Macul Chile
| | - Iván Uribe
- Departamento de Química Física; Pontificia Universidad Católica de Chile; Av. Vicuña Mackenna 4860, Casilla 306 Santiago 6094411, Macul Chile
| | - Dafne Díaz-Hernández
- Departamento de Química Orgánica; Pontificia Universidad Católica de Chile; Av. Vicuña Mackenna 4860, Casilla 306 Santiago 6094411, Macul Chile
| | - Angélica Fierro
- Departamento de Química Orgánica; Pontificia Universidad Católica de Chile; Av. Vicuña Mackenna 4860, Casilla 306 Santiago 6094411, Macul Chile
| | - Álvaro Cañete.
- Departamento de Química Orgánica; Pontificia Universidad Católica de Chile; Av. Vicuña Mackenna 4860, Casilla 306 Santiago 6094411, Macul Chile
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3
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Gao W, Gong C, Yang Q, Yuan J, Xu L, Peng Y. Rh(III)-catalyzed oxidative ortho-C–H alkylation of 2,4-diarylquinazoline with potassium alkyltrifluoroborates. CAN J CHEM 2017. [DOI: 10.1139/cjc-2017-0258] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Alkyltrifluoroborates were used for Rh(III)-catalyzed ortho-alkylation of 2,4-disubstituted quinazoline via C–H bond activation. The reaction proceeded well with a broad substrate scope, providing a direct way to access high functional quinazoline core structure derivatives in yields up to 95%.
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Affiliation(s)
- Wei Gao
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education; Jiangxi Province’s Key Laboratory of Green Chemistry and Jiangxi Normal University, Nanchang, Jiangxi 330022, China
- Jiangxi Academy of Forestry, Nanchang, Jiangxi 330013, China
| | - Chun Gong
- Jiangxi Academy of Forestry, Nanchang, Jiangxi 330013, China
| | - Qin Yang
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education; Jiangxi Province’s Key Laboratory of Green Chemistry and Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Jianjun Yuan
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education; Jiangxi Province’s Key Laboratory of Green Chemistry and Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Linchu Xu
- Jiangxi Academy of Forestry, Nanchang, Jiangxi 330013, China
| | - Yiyuan Peng
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education; Jiangxi Province’s Key Laboratory of Green Chemistry and Jiangxi Normal University, Nanchang, Jiangxi 330022, China
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El-Sayed HA, Said SA, Moustafa AH, Baraka MM, Abdel-Kader RT. Synthesis and Biological Evaluation of 2-Oxo/Thioxoquinoxaline and 2-Oxo/Thioxoquinoxaline-Based Nucleoside Analogues. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2016; 35:16-31. [PMID: 26810144 DOI: 10.1080/15257770.2015.1114124] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Several O- and S-quinoxaline glycosides have been prepared by glycosidation of 3-methyl-2-oxo(thioxo)-1,2-dihydroquinoxalines 1a,b with α-D-glucopyranosyl, α-D-galactopyranosyl, and α-D-lactosyl bromide in the presence of K2CO3 followed by deacetylation with Et3N/H2O. Furthermore, alkylation of 1a,b with 4-bromobutyl acetate, 2-acetoxyethoxymethyl bromide, and 3-chloropropanol afforded the corresponding O- and S-acycloquinoxaline nucleosides. Reaction of 1b with chloroacetic acid followed by condensation with sulfacetamide and sulfadiazine in the presence of Et3N/THF and ethyl chloroformate gave the corresponding sulfonamide derivatives 14 and 15, respectively. The structures of new compounds were confirmed by using IR, (1)H, (13)C NMR spectra and microanalysis. Some of these compounds were screened in vitro for antitumor and antifungal activities.
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Affiliation(s)
- Hassan A El-Sayed
- a Department of Chemistry , Faculty of Science, Zagazig University , Zagazig , Egypt
| | - Said A Said
- a Department of Chemistry , Faculty of Science, Zagazig University , Zagazig , Egypt
| | - Ahmed H Moustafa
- a Department of Chemistry , Faculty of Science, Zagazig University , Zagazig , Egypt
| | - Mohamed M Baraka
- b Department of Medicinal Chemistry , Faculty of Pharmacy, Zagazig University , Zagazig , Egypt
| | - Rimaa T Abdel-Kader
- a Department of Chemistry , Faculty of Science, Zagazig University , Zagazig , Egypt
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5
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Mao J, Liu D, Li Y, Zhao J, Rong G, Yan H, Zhang G. A practical, chemoselective approach to O-methylation of carboxylic acids with dimethyl malonate. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.10.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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6
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Yan G, Borah AJ, Wang L, Yang M. Recent Advances in Transition Metal-Catalyzed Methylation Reactions. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201400984] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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7
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Alizadeh A, Mokhtari J. Unexpected Approach to the Synthesis of 2-Phenylquinoxalines and Pyrido[2,3-b]pyrazinesviaa Regioselective Reaction. Helv Chim Acta 2013. [DOI: 10.1002/hlca.201200088] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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9
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Tilstam U. A Continuous Methylation of Phenols and N,H-Heteroaromatic Compounds with Dimethyl Carbonate. Org Process Res Dev 2012. [DOI: 10.1021/op3002068] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ulf Tilstam
- CMC Solutions bvba, Overhemstraat
3, B-3320 Hoegaarden, Belgium
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Cao J, Li Y, Feng J. 9‐Benzylidene‐9
H
‐fluorene Derivatives Linked to Monoaza‐15‐crown‐5: Synthesis and Metal Ion Sensing. CHINESE J CHEM 2012. [DOI: 10.1002/cjoc.201200047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jing Cao
- College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, China
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, China
| | - Yang Li
- College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, China
| | - Junxiang Feng
- College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, China
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11
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Tilstam U. A Continuous Base-Catalyzed Methylation of Phenols with Dimethyl Carbonate. Org Process Res Dev 2012. [DOI: 10.1021/op200379j] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ulf Tilstam
- CMC Solutions bvba, Overhemstraat
3, B-3320 Hoegaarden, Belgium
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Cao J, Feng JX, Wu YX, Pei XQ, Yan JJ, Liu Y, Qin WJ, Zhang XB. An ion-responsive fluorescent compound based on NO-photoisomerisation styryl derivative linked to monoaza-15-crown-5. Supramol Chem 2011. [DOI: 10.1080/10610278.2010.532215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Jing Cao
- a College of Chemistry, Xiangtan University , Xiangtan , Hunan , 411105 , P.R. China
- b Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education , College of Chemistry, Xiangtan University , Xiangtan , Hunan , 411105 , P.R. China
| | - Jun Xiang Feng
- a College of Chemistry, Xiangtan University , Xiangtan , Hunan , 411105 , P.R. China
| | - Yong Xiang Wu
- a College of Chemistry, Xiangtan University , Xiangtan , Hunan , 411105 , P.R. China
| | - Xue Qun Pei
- a College of Chemistry, Xiangtan University , Xiangtan , Hunan , 411105 , P.R. China
| | - Jiao Jiao Yan
- a College of Chemistry, Xiangtan University , Xiangtan , Hunan , 411105 , P.R. China
| | - Yang Liu
- a College of Chemistry, Xiangtan University , Xiangtan , Hunan , 411105 , P.R. China
| | - Wen Jie Qin
- a College of Chemistry, Xiangtan University , Xiangtan , Hunan , 411105 , P.R. China
| | - Xiao Bin Zhang
- a College of Chemistry, Xiangtan University , Xiangtan , Hunan , 411105 , P.R. China
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Huang TK, Shi L, Wang R, Guo XZ, Lu XX. Keggin type heteropolyacids-catalyzed synthesis of quinoxaline derivatives in water. CHINESE CHEM LETT 2009. [DOI: 10.1016/j.cclet.2008.10.048] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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14
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Darabi HR, Mohandessi S, Aghapoor K, Mohsenzadeh F. A recyclable and highly effective sulfamic acid/MeOH catalytic system for the synthesis of quinoxalines at room temperature. CATAL COMMUN 2007. [DOI: 10.1016/j.catcom.2006.06.033] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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15
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Affiliation(s)
- Xun Li
- a School of Pharmacy , Shandong University , Ji'nan , China
| | - Donghua Wang
- b College of Pharmaceuticals and Biotechnology , Tianjin University , Tianjin , China
| | - Jifeng Wu
- c Jinan Public Security Bureau , Ji'nan , China
| | - Wenfang Xu
- a School of Pharmacy , Shandong University , Ji'nan , China
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Wanichacheva N, Wanichecheva N, Benco JS, Lambert CR, McGimpsey WG. A Highly Selective Bicyclic Fluoroionophore for the Detection of Lithium Ions†. Photochem Photobiol 2006; 82:268-73. [PMID: 16149856 DOI: 10.1562/2005-07-08-ra-606] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The macrobicyclic molecule, 21-(9-anthrylmethyl)-4,17,13,16-tetraoxa-1,10,21-triazabicyclo [8.8.5]tricosane-19,23-dione, I, was designed, synthesized and characterized as a fluoroionophore for the selective, optical detection of lithium ions. Compound I is based on a bridged diazacrown structure, which provides a semirigid binding framework. Binding takes place by electrostatic interactions between the oxygen atoms of the crown and the cation and is transduced to fluorescence emission from an attached anthracene fluorophore. In a 75:25 dichloromethane/tetrahydrofuran solvent mixture, I acts as an intramolecular electron transfer "off-on" fluorescence switch, exhibiting a greater than 190-fold enhancement in fluorescence emission intensity in the presence of lithium ions. The relative selectivity of I for lithium ions over sodium, potassium and ammonium ions was found to be log K(Li+,Na+) approximately -3.36, log K(Li+,K+) approximately -1.77 and log K(Li+,NH4+) approximately -2.78.
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Affiliation(s)
- Nantanit Wanichacheva
- Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, Worcester, MA 01609, USA
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De la Fuente JR, Cañete A, Saitz C, Jullian C. Photoreduction of 3-Phenylquinoxalin-2-ones by Amines: Transient-Absorption and Semiempirical Quantum-Chemical Studies. J Phys Chem A 2002. [DOI: 10.1021/jp014317c] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Julio R. De la Fuente
- Departamento de Química Orgánica y Fisicoquímica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Casilla 233, Santiago 1, Santiago, Chile
| | - Alvaro Cañete
- Departamento de Química Orgánica y Fisicoquímica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Casilla 233, Santiago 1, Santiago, Chile
| | - Claudio Saitz
- Departamento de Química Orgánica y Fisicoquímica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Casilla 233, Santiago 1, Santiago, Chile
| | - Carolina Jullian
- Departamento de Química Orgánica y Fisicoquímica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Casilla 233, Santiago 1, Santiago, Chile
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De La Fuente JR, Canete A, Zanocco AL, Saitz C, Jullian C. Formal hydride transfer mechanism for photoreduction of 3-phenylquinoxalin-2-ones by amines. Association Of 3-phenylquinoxalin-2-one with aliphatic amines. J Org Chem 2000; 65:7949-58. [PMID: 11073603 DOI: 10.1021/jo000992r] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The photophysical and photochemical behavior of 1-methyl-3-phenylquinoxalin-2-one (MeNQ) and 3-phenylquinoxalin-2-one (HNQ) in the presence of amines is reported. While HNQ fluorescence shows an auxochromic effect and a bathochromic shift with added amines, explained by association of HNQ with amine in the ground state and emission from both excited species HNQ and [HNQ-amine], both MeNQ and HNQ are photoreduced efficiently on irradiation in the presence of amines, leading to the semireduced quinoxalin-2-ones, MeNQH(-) and HNQH(-), respectively, via an electron-proton-electron transfer, with unit quantum yields at high amine concentrations. The semireduced quinoxalin-2-ones XNQH(-) (X = H, Me) revert almost quantitatively to the parent XNQ in a dark thermal reaction with an activation free energy for MeNQH(-) of 17.4 and 25.9 kcal/mol in acetonitrile and benzene, respectively. Kinetic and spectroscopic (UV and NMR) evidence supports the proposed reaction mechanism for the reversible photoreduction.
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Affiliation(s)
- J R De La Fuente
- Departamento de Quimica Organica y Fisicoquimica, Facultad de Ciencias Quimicas y Farmaceuticas, Universidad de Chile, PO Box 233, Santiago 1, Santiago, Chile
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Ghorbanian S, Mehta LK, Parrick J. Synthesis and Evaluation of Thiol Probes using the 6,7-dimethoxyquinoxalin-2(1 H)-one fluorophore. JOURNAL OF CHEMICAL RESEARCH 2000. [DOI: 10.3184/030823400103166391] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
3-Substituted quinoxalin-2(1 H)-ones, 7 and 10, were prepared as candidate fluorescent probes for thiols and then reacted with representative thiols to give sulfides, 11–17, whose fluorescence was studied.
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Affiliation(s)
- Shohreh Ghorbanian
- Chemistry Section, Institute of Physical and Environmental Sciences, Brunel University, Uxbridge, Middlesex UB8 3PH, UK
| | - Lina K. Mehta
- Chemistry Section, Institute of Physical and Environmental Sciences, Brunel University, Uxbridge, Middlesex UB8 3PH, UK
| | - John Parrick
- Chemistry Section, Institute of Physical and Environmental Sciences, Brunel University, Uxbridge, Middlesex UB8 3PH, UK
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Ghorbanian S, Mehta LK, Parrick J, Robson CH. Synthesis of some 24-membered tetralactam derivatives by an unexpectedly simple route, and some macrocyclic polyether dilactams. Tetrahedron 1999. [DOI: 10.1016/s0040-4020(99)00892-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Duffy KJ, Haltiwanger R, Huang Y, Konialian-Beck A, Luengo JI. A novel synthesis of 2-(2-quinoxalino)-3,5-diarylfurans. Tetrahedron Lett 1998. [DOI: 10.1016/s0040-4039(98)01790-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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de Silva AP, Gunaratne HQN, Gunnlaugsson T, Huxley AJM, McCoy CP, Rademacher JT, Rice TE. Signaling Recognition Events with Fluorescent Sensors and Switches. Chem Rev 1997; 97:1515-1566. [PMID: 11851458 DOI: 10.1021/cr960386p] [Citation(s) in RCA: 5176] [Impact Index Per Article: 191.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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