1
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Qi H, Zhao Y, Li W, Chen S. Synthesis of 1,4-benzoxazines via Y(OTf) 3-catalyzed ring opening/annulation cascade reaction of benzoxazoles with propargylic alcohols. Chem Commun (Camb) 2022; 58:9120-9123. [PMID: 35880715 DOI: 10.1039/d2cc03080b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A convenient Y(OTf)3-catalyzed cascade formal [4 + 2] cyclization approach for the formation of 1,4-benzoxazine scaffolds from benzoxazoles and propargyl alcohols through a ring-opening and regioselective ring-closure process has been developed. By using this mild and practical protocol, a broad range of aldehyde-containing 1,4-benzoxazine compounds were prepared in moderate to excellent yields with good functional group tolerance. Mechanistic studies indicated that an SN1 nucleophilic substitution of benzoxazole with a propargyl cation was involved in this transformation.
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Affiliation(s)
- Hongbo Qi
- Inner Mongolia Key Laboratory of Fine Organic Synthesis, Department of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China.
| | - Yupeng Zhao
- Inner Mongolia Key Laboratory of Fine Organic Synthesis, Department of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China.
| | - Wencong Li
- Inner Mongolia Key Laboratory of Fine Organic Synthesis, Department of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China.
| | - Shufeng Chen
- Inner Mongolia Key Laboratory of Fine Organic Synthesis, Department of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China.
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2
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Kang S, Yeo HM, Kim TH. S
‐Benzyl‐
N,N′
‐diphenyl Isothiouronium Iodide as an Efficient Organocatalyst for the Transfer Hydrogenation of 1,4‐Benzoxazines. ChemistrySelect 2022. [DOI: 10.1002/slct.202103392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sungmin Kang
- School of Chemical Engineering College of Engineering Chonnam National University Gwangju 61186, Republic of Korea
| | - Hyoung Min Yeo
- School of Chemical Engineering College of Engineering Chonnam National University Gwangju 61186, Republic of Korea
| | - Taek Hyeon Kim
- School of Chemical Engineering College of Engineering Chonnam National University Gwangju 61186, Republic of Korea
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3
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Bhosale VA, Nigríni M, Dračínský M, Císařová I, Veselý J. Enantioselective Desymmetrization of 3-Substituted Oxetanes: An Efficient Access to Chiral 3,4-Dihydro-2 H-1,4-benzoxazines. Org Lett 2021; 23:9376-9381. [PMID: 34817183 DOI: 10.1021/acs.orglett.1c03419] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein, we describe a versatile transition metal/oxidant free synthesis of the chiral 2H-1,4-benzoxazines through chiral phosphoric acid (CPA) catalyzed enantioselective desymmetrization of prochiral oxetanes (30 examples) in up to 99% yield and 99% enantioselectivity under mild reaction conditions. The reported strategy not only complements the conventional 2H-1,4-benzoxazine synthetic strategies but also provides access to key intermediates of therapeutic candidates, i.e., prostaglandin D2 receptor antagonist and M1 positive allosteric modulator (PAM) compound VU0486846.
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Affiliation(s)
- Viraj A Bhosale
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 43 Prague, Czech Republic
| | - Martin Nigríni
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 43 Prague, Czech Republic
| | - Martin Dračínský
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nám. 2, 160 00 Prague, Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 43 Prague, Czech Republic
| | - Jan Veselý
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 43 Prague, Czech Republic
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4
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Dong K, Jin XL, Chen S, Wu LZ, Liu Q. Controllable synthesis of 2- and 3-aryl-benzomorpholines from 2-aminophenols and 4-vinylphenols. Chem Commun (Camb) 2020; 56:7941-7944. [PMID: 32531007 DOI: 10.1039/d0cc02662j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present herein a method for the controllable synthesis of 3-aryl-benzomorpholine and 2-aryl-benzomorpholine cycloadducts via cross-coupling/annulation between electron-rich 2-aminophenols and 4-vinylphenols. Molecular oxygen was successfully used in the reaction as the terminal oxidant and the complete inversion of chemoselectivity was achieved by the adjustment of the solvents and bases at room temperature.
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Affiliation(s)
- Kui Dong
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, P. R. China.
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5
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Mishra A, Bhowmik A, Samanta S, Sarkar W, Das S, Deb I. Diastereoselective Spirocyclization of Benzoxazines with Nitroalkenes via Rhodium-Catalyzed C–H Functionalization/Annulation Cascade under Mild Conditions. Org Lett 2020; 22:1340-1344. [DOI: 10.1021/acs.orglett.9b04652] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Aniket Mishra
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4-Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Arup Bhowmik
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4-Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Siddhartha Samanta
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4-Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Writhabrata Sarkar
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4-Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Sumit Das
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4-Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Indubhusan Deb
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4-Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
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6
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Das J, Borah BJ, Das SK. Base-mediated intramolecular one-pot double-cyclization of epoxide-tethered 2-fluorobenzenesulfonamides: an avenue to 1,4-benzoxazine-fused benzothiaoxazepine-1,1-dioxides. Org Biomol Chem 2020; 18:220-224. [PMID: 31829386 DOI: 10.1039/c9ob02377a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Herein, we describe the synthesis of hitherto unknown 1,4-benzoxazine-fused benzothiaoxazepine-1,1-dioxides by a NaH-promoted intramolecular one-pot double-cyclization of epoxide-tethered 2-fluorobenzene sulfonamides. Mechanistically, the reactions proceed via an intramolecular epoxide ring-opening followed by an intramolecular nucleophilic aromatic substitution. The high yields, mild conditions, complete regio- and diastereoselectivity, and a wide substrate scope render this protocol well suited for drug discovery efforts.
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Affiliation(s)
- Jonali Das
- Department of Chemical Sciences, Tezpur University, Napaam, Tezpur, Assam, India-784028.
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7
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Tárraga WA, Garda HA, Toledo JD, Gonzalez MC. Potential Inhibitors of the Activity of the Cholesterol-Ester Transfer Protein. J Comput Biol 2019; 26:1458-1469. [PMID: 31356116 DOI: 10.1089/cmb.2018.0227] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
The cholesterol-ester transfer protein (CETP) exchanges lipids between high-density lipoproteins (HDLs) and low-density lipoproteins (LDLs). The excessive transport of lipids from HDLs to LDLs mediated by this protein can cause an alteration in the deposition of lipoproteins onto the arterial walls, thus promoting the development of arteriosclerosis. Different CETP inhibitors have been tested in recent years, but none has been confirmed as being effectively palliative for the disease. We employed in silico databases and molecular docking as a computational method to predict how potential CETP inhibitors could interact with the active site of the CETP protein. Upon previously comparing two computer software packages to determine which generated a greater number of accurate CETP-inhibitor-complex structures, we chose the more appropriate program for our studies. We then abstracted a series of databases of known CETP inhibitors and noninhibitors exhibiting different 50% concentrations of CETP-inhibitory (INH) activity, to generate virtual structures for docking with different combinations of the CETP receptor. From this process, we obtained as the most suitable structure 4F2A_1OB_C_PCW-it accordingly having a greater area under the receiver operating characteristic curve. The molecular docking of known compounds in comparison with the respective conformation of this inhibitor enabled us to obtain ΔGs (in kcal/mol) from which data we made a first exploration of unknown compounds for CETP-INH activity. Thus, the 4F2A_1OB_C_PCW structure was docked with DrugBank-Approved commercial compounds in an extensive database, whose status had already been established from pharmacokinetics and toxicology. In this study, we present a group of potential compounds as CETP-inhibitor candidates.
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Affiliation(s)
- Wilson Alberto Tárraga
- Institute of Biochemical Research of La Plata Rodolfo Brenner (INIBIOLP), CONICET-CCT La Plata, Faculty of Medical Sciences, National University of La Plata (UNLP), La Plata, Argentina
| | - Horacio Alberto Garda
- Institute of Biochemical Research of La Plata Rodolfo Brenner (INIBIOLP), CONICET-CCT La Plata, Faculty of Medical Sciences, National University of La Plata (UNLP), La Plata, Argentina
| | - Juan Domingo Toledo
- Institute of Biochemical Research of La Plata Rodolfo Brenner (INIBIOLP), CONICET-CCT La Plata, Faculty of Medical Sciences, National University of La Plata (UNLP), La Plata, Argentina
| | - Marina Cecilia Gonzalez
- Institute of Biochemical Research of La Plata Rodolfo Brenner (INIBIOLP), CONICET-CCT La Plata, Faculty of Medical Sciences, National University of La Plata (UNLP), La Plata, Argentina
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8
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Han Z, Liu G, Wang R, Dong XQ, Zhang X. Highly efficient Ir-catalyzed asymmetric hydrogenation of benzoxazinones and derivatives with a Brønsted acid cocatalyst. Chem Sci 2019; 10:4328-4333. [PMID: 31057759 PMCID: PMC6471538 DOI: 10.1039/c8sc05797d] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Accepted: 03/03/2019] [Indexed: 12/18/2022] Open
Abstract
The Ir-catalyzed highly efficient asymmetric hydrogenation of benzoxazinones and derivatives was successfully developed with N-methylated ZhaoPhos L5 as the ligand, affording various chiral dihydrobenzoxazinones and derivatives with excellent results.
The Ir-catalyzed highly efficient asymmetric hydrogenation of benzoxazinones and derivatives was successfully developed with N-methylated ZhaoPhos L5 as the ligand, which may display a new activation mode with a single anion-binding interaction among the substrate, cocatalyst Brønsted acid and ligand. This synthetic approach afforded a series of chiral dihydrobenzoxazinones and derivatives with excellent results (>99% conversion, 88–96% yields, 91–>99% ee, up to 40 500 TON). A key to success is the utilization of a strong Brønsted acid as the cocatalyst, such as hydrochloric acid, to form a possible single anion-binding interaction with the substrate and catalyst, which greatly contributed to the improvement of reactivity and enantioselectivity. Importantly, a creative and efficient synthetic route was developed to construct the important intermediate for the potential IgE/IgG receptor modulator through our catalytic methodology system.
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Affiliation(s)
- Zhengyu Han
- Key Laboratory of Biomedical Polymers , Engineering Research Center of Organosilicon Compounds & Materials , Ministry of Education , College of Chemistry and Molecular Sciences , Wuhan University , Wuhan , Hubei 430072 , P. R. China .
| | - Gang Liu
- Key Laboratory of Biomedical Polymers , Engineering Research Center of Organosilicon Compounds & Materials , Ministry of Education , College of Chemistry and Molecular Sciences , Wuhan University , Wuhan , Hubei 430072 , P. R. China .
| | - Rui Wang
- Key Laboratory of Biomedical Polymers , Engineering Research Center of Organosilicon Compounds & Materials , Ministry of Education , College of Chemistry and Molecular Sciences , Wuhan University , Wuhan , Hubei 430072 , P. R. China .
| | - Xiu-Qin Dong
- Key Laboratory of Biomedical Polymers , Engineering Research Center of Organosilicon Compounds & Materials , Ministry of Education , College of Chemistry and Molecular Sciences , Wuhan University , Wuhan , Hubei 430072 , P. R. China .
| | - Xumu Zhang
- Key Laboratory of Biomedical Polymers , Engineering Research Center of Organosilicon Compounds & Materials , Ministry of Education , College of Chemistry and Molecular Sciences , Wuhan University , Wuhan , Hubei 430072 , P. R. China . .,Department of Chemistry , Shenzhen Grubbs Institute , Southern University of Science and Technology , Shenzhen , Guangdong 518055 , P. R. China .
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9
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Zumbrägel N, Machui P, Nonnhoff J, Gröger H. Enantioselective Biocatalytic Reduction of 2 H-1,4-Benzoxazines Using Imine Reductases. J Org Chem 2019; 84:1440-1447. [PMID: 30562025 DOI: 10.1021/acs.joc.8b02867] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A biocatalytic reduction of 2 H-1,4-benzoxazines using imine reductases is reported. This process enables a smooth and enantioselective synthesis of the resulting cyclic amines under mild conditions in aqueous media by means of a catalytic amount of the cofactor NADPH as hydride source as well as glucose as the reducing agent used in stoichiometric amounts for in situ cofactor recycling. Several substrates were studied, and the 3,4-dihydro-2 H-1,4-benzoxazines were obtained with up to 99% ee. In addition, the efficiency of this reduction process based on imine reductases as catalysts has been demonstrated for one 2 H-1,4-benzoxazine on an elevated laboratory scale running at a substrate loading of 10 g L-1 in the presence of a tailor-made whole-cell catalyst.
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Affiliation(s)
- Nadine Zumbrägel
- Chair of Organic Chemistry I, Faculty of Chemistry , Bielefeld University , Universitätsstraße 25 , 33615 Bielefeld , Germany
| | - Paul Machui
- Chair of Organic Chemistry I, Faculty of Chemistry , Bielefeld University , Universitätsstraße 25 , 33615 Bielefeld , Germany
| | - Jannis Nonnhoff
- Chair of Organic Chemistry I, Faculty of Chemistry , Bielefeld University , Universitätsstraße 25 , 33615 Bielefeld , Germany
| | - Harald Gröger
- Chair of Organic Chemistry I, Faculty of Chemistry , Bielefeld University , Universitätsstraße 25 , 33615 Bielefeld , Germany
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10
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Lu X, Bai Y, Li Y, Shi Y, Li L, Wu Y, Zhong F. Assembly of C3a-Peroxylated Pyrroloindolines via Interrupted Witkop Oxidation. Org Lett 2018; 20:7937-7941. [DOI: 10.1021/acs.orglett.8b03509] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Xunbo Lu
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
| | - Yulong Bai
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
| | - Yan Li
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
| | - Yufeng Shi
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
| | - Longjie Li
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
| | - Yuzhou Wu
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
| | - Fangrui Zhong
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
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11
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Viji M, Sim J, Li S, Lee H, Oh K, Jung JK. Organocatalytic and Regiodivergent Mannich Reaction of Ketones with Benzoxazinones. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800870] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Mayavan Viji
- College of Pharmacy and Medicinal Research Center (MRC); Chungbuk National University; Cheongju 28160 Republic of Korea
| | - Jaeuk Sim
- College of Pharmacy and Medicinal Research Center (MRC); Chungbuk National University; Cheongju 28160 Republic of Korea
| | - Siyuan Li
- College of Pharmacy and Medicinal Research Center (MRC); Chungbuk National University; Cheongju 28160 Republic of Korea
| | - Heesoon Lee
- College of Pharmacy and Medicinal Research Center (MRC); Chungbuk National University; Cheongju 28160 Republic of Korea
| | - Kyungsoo Oh
- Center for Metareceptome Research; College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak; Seoul 06974 Republic of Korea
| | - Jae-Kyung Jung
- College of Pharmacy and Medicinal Research Center (MRC); Chungbuk National University; Cheongju 28160 Republic of Korea
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12
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El-Bordany EA, Ali RS. Synthesis of New Benzoxazinone, Quinazolinone, and Pyrazoloquinazolinone Derivatives and Evaluation of Their Cytotoxic Activity Against Human Breast Cancer Cells. J Heterocycl Chem 2018. [DOI: 10.1002/jhet.3158] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Eman A. El-Bordany
- Department of Chemistry, Faculty of Science; Ain Shams University; Cairo 11566 Egypt
| | - Rania S. Ali
- Faculty of Industrial Education; Helwan University; Cairo 11795 Egypt
- Department of Chemistry, Faculty of Science; Taif University; Taif 21974 Saudi Arabia
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13
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Vasu D, Hausmann JN, Saito H, Yanagi T, Yorimitsu H, Osuka A. Robust Palladium‐Catalyzed Arylation of Catalyst‐Poisoning
ortho
‐Sulfanyl Aryl Halides with Tetraarylborates and Its Application to Synthesis of π‐Extended Dibenzothiophenes. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700323] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Dhananjayan Vasu
- Department of Chemistry, Graduate School of Science Kyoto University Sakyo-ku Kyoto 606-8502 Japan
| | - Jan Niklas Hausmann
- Department of Chemistry, Graduate School of Science Kyoto University Sakyo-ku Kyoto 606-8502 Japan
| | - Hayate Saito
- Department of Chemistry, Graduate School of Science Kyoto University Sakyo-ku Kyoto 606-8502 Japan
| | - Tomoyuki Yanagi
- Department of Chemistry, Graduate School of Science Kyoto University Sakyo-ku Kyoto 606-8502 Japan
| | - Hideki Yorimitsu
- Department of Chemistry, Graduate School of Science Kyoto University Sakyo-ku Kyoto 606-8502 Japan
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate School of Science Kyoto University Sakyo-ku Kyoto 606-8502 Japan
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14
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Wu G, Lv T, Mo W, Yang X, Gao Y, Chen H. One-pot synthesis of tricyclo-1,4-benzoxazines via visible-light photoredox catalysis in continuous flow. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.02.068] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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15
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Wei S, Feng X, Du H. A metal-free hydrogenation of 3-substituted 2H-1,4-benzoxazines. Org Biomol Chem 2016; 14:8026-9. [PMID: 27501824 DOI: 10.1039/c6ob01556e] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A metal-free hydrogenation of 3-substituted 2H-1,4-benzoxazines has been successfully realized with 2.5 mol% of B(C6F5)3 as a catalyst to furnish a variety of 3,4-dihydro-2H-1,4-benzoxazines in 93-99% yields. Up to 42% ee was also achieved for the asymmetric hydrogenation with the use of a chiral diene and HB(C6F5)2.
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Affiliation(s)
- Simin Wei
- Beijing National Laboratory of Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
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16
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Liu ZT, Wang YH, Zhu FL, Hu XP. Enantioselective Copper-Catalyzed Formal [4 + 2] Cycloaddition of o-Aminophenol Derivatives with Propargylic Esters for Synthesis of Optically Active 3,4-Dihydro-2H-1,4-benzoxazines. Org Lett 2016; 18:1190-3. [DOI: 10.1021/acs.orglett.6b00322] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Zhen-Ting Liu
- Dalian
Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ya-Hui Wang
- Dalian
Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Fu-Lin Zhu
- Dalian
Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiang-Ping Hu
- Dalian
Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
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17
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Nguyen KMH, Schwendimann L, Gressens P, Largeron M. Regiospecific synthesis of neuroprotective 1,4-benzoxazine derivatives through a tandem oxidation–Diels–Alder reaction. Org Biomol Chem 2015; 13:3749-56. [DOI: 10.1039/c5ob00049a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Highly functionalized 1,4-benzoxazine derivatives have been synthesized at room temperature, with complete regiochemical control, through a tandem oxidation–Diels–Alder reaction.
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Affiliation(s)
- Khac Minh Huy Nguyen
- UMR 8638 CNRS-Université Paris Descartes
- Sorbonne Paris Cité
- Faculté de Pharmacie de Paris
- 75270 Paris cedex 06
- France
| | | | - Pierre Gressens
- Inserm
- F-75019 Paris
- France
- Université Paris Diderot
- F-75019 Paris
| | - Martine Largeron
- UMR 8638 CNRS-Université Paris Descartes
- Sorbonne Paris Cité
- Faculté de Pharmacie de Paris
- 75270 Paris cedex 06
- France
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18
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Malhotra R, Dey TK, Basu S, Hajra S. Enantiopure synthesis of dihydrobenzo[1,4]-oxazine-3-carboxylic acids and a route to benzoxazinyl oxazolidinones. Org Biomol Chem 2015; 13:3211-9. [DOI: 10.1039/c4ob02475c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A two step protocol is developed for the enantiopure synthesis of dihydrobenzoxazine-3-carboxylic acids via RuPhos Palladacycle-catalyzed aminoarylation of β-(2-bromoaryloxy)amino acids.
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Affiliation(s)
- Rajesh Malhotra
- Department of Chemistry
- Guru Jambheshwar University of Science and Technology
- Hisar
- India
| | - Tushar K. Dey
- Department of Chemistry
- Guru Jambheshwar University of Science and Technology
- Hisar
- India
- TCG Life Sciences Ltd
| | | | - Saumen Hajra
- Centre of Biomedical Research
- Lucknow 226014
- India
- Department of Chemistry
- Indian Institute of Technology Kharagpur
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19
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Zhou XW, Ma HL, Zhang X, Jing SY, Miao JY, Zhao BX. Synthesis of 6-cinnamoyl-2H-benzo[b][1,4]oxazin-3(4H)-ones and their effects on A549 lung cancer cell growth. Eur J Med Chem 2014; 79:95-101. [DOI: 10.1016/j.ejmech.2014.03.087] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Revised: 03/28/2014] [Accepted: 03/31/2014] [Indexed: 01/26/2023]
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20
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Qin J, Chen F, He YM, Fan QH. Asymmetric hydrogenation of 3-substituted 2H-1,4-benzoxazines with chiral cationic Ru-MsDPEN catalysts: a remarkable counteranion effect. Org Chem Front 2014. [DOI: 10.1039/c4qo00188e] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The achiral counteranions of chiral cationic Ru-diamine complexes regulated both the enantioselectivity and regioselectivity in the asymmetric hydrogenation of 3-substituted-2H-1,4-benzoxazines.
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Affiliation(s)
- Jie Qin
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Molecular Recognition and Function
- Institute of Chemistry
- Chinese Academy of Sciences (CAS)
- Beijing 100190, P. R. China
| | - Fei Chen
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Molecular Recognition and Function
- Institute of Chemistry
- Chinese Academy of Sciences (CAS)
- Beijing 100190, P. R. China
| | - Yan-Mei He
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Molecular Recognition and Function
- Institute of Chemistry
- Chinese Academy of Sciences (CAS)
- Beijing 100190, P. R. China
| | - Qing-Hua Fan
- Beijing National Laboratory for Molecular Sciences
- CAS Key Laboratory of Molecular Recognition and Function
- Institute of Chemistry
- Chinese Academy of Sciences (CAS)
- Beijing 100190, P. R. China
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Mantlo NB, Escribano A. Update on the Discovery and Development of Cholesteryl Ester Transfer Protein Inhibitors for Reducing Residual Cardiovascular Risk. J Med Chem 2013; 57:1-17. [DOI: 10.1021/jm400574e] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nathan B. Mantlo
- Lilly
Research Laboratories, Eli Lilly and Co., Indianapolis, Indiana 46285, United States
| | - Ana Escribano
- Centro
de Investigación
Lilly, Avda. de la Industria 30, 28108-Alcobendas, Madrid, Spain
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22
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Pal’chikov VA. Morpholines. Synthesis and biological activity. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2013. [DOI: 10.1134/s1070428013060018] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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23
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Mahdy Ali K, Wonnerth A, Huber K, Wojta J. Cardiovascular disease risk reduction by raising HDL cholesterol--current therapies and future opportunities. Br J Pharmacol 2013; 167:1177-94. [PMID: 22725625 DOI: 10.1111/j.1476-5381.2012.02081.x] [Citation(s) in RCA: 164] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Since the first discovery of an inverse correlation between high-density lipoprotein-cholesterol (HDL-C) levels and coronary heart disease in the 1950s the life cycle of HDL, its role in atherosclerosis and the therapeutic modification of HDL-C levels have been major research topics. The Framingham study and others that followed could show that HDL-C is an independent cardiovascular risk factor and that the increase of HDL-C of only 10 mg·L(-1) leads to a risk reduction of 2-3%. While statin therapy and therefore low-density lipoprotein-cholesterol (LDL-C) reduction could lower coronary heart disease considerably; cardiovascular morbidity and mortality still occur in a significant portion of subjects already receiving therapy. Therefore, new strategies and therapies are needed to further reduce the risk. Raising HDL-C was thought to achieve this goal. However, established drug therapies resulting in substantial HDL-C increase are scarce and their effect is controversial. Furthermore, it is becoming increasingly evident that HDL particle functionality is at least as important as HDL-C levels since HDL particles not only promote reverse cholesterol transport from the periphery (mainly macrophages) to the liver but also exert pleiotropic effects on inflammation, haemostasis and apoptosis. This review deals with the biology of HDL particles, the established and future therapeutic options to increase HDL-C and discusses the results and conclusions of the most important studies published in the last years. Finally, an outlook on future diagnostic tools and therapeutic opportunities regarding coronary artery disease is given.
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Affiliation(s)
- K Mahdy Ali
- Department of Internal Medicine II, Medical University of Vienna, Vienna, Austria
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Fleischer S, Zhou S, Werkmeister S, Junge K, Beller M. Cooperative Iron-Brønsted Acid Catalysis: Enantioselective Hydrogenation of Quinoxalines and 2 H-1,4-Benzoxazines. Chemistry 2013; 19:4997-5003. [DOI: 10.1002/chem.201204236] [Citation(s) in RCA: 121] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Indexed: 11/06/2022]
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25
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Miller MM, Liu Y, Jiang J, Johnson JA, Kamau M, Nirschl DS, Wang Y, Harikrishnan L, Taylor DS, Chen AYA, Yin X, Seethala R, Peterson TL, Zvyaga T, Zhang J, Huang CS, Wexler RR, Poss MA, Michael Lawrence R, Adam LP, Salvati ME. Identification of a potent and metabolically stable series of fluorinated diphenylpyridylethanamine-based cholesteryl ester transfer protein inhibitors. Bioorg Med Chem Lett 2012; 22:6503-8. [DOI: 10.1016/j.bmcl.2012.08.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2012] [Revised: 07/25/2012] [Accepted: 08/01/2012] [Indexed: 10/28/2022]
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SAR studies on the central phenyl ring of substituted biphenyl oxazolidinone-potent CETP inhibitors. Bioorg Med Chem Lett 2012; 22:199-203. [DOI: 10.1016/j.bmcl.2011.11.039] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2011] [Accepted: 11/09/2011] [Indexed: 11/22/2022]
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27
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Lu Z, Napolitano JB, Theberge A, Ali A, Hammond ML, Tan E, Tong X, Xu SS, Latham MJ, Peterson LB, Anderson MS, Eveland SS, Guo Q, Hyland SA, Milot DP, Chen Y, Sparrow CP, Wright SD, Sinclair PJ. Design of a novel class of biphenyl CETP inhibitors. Bioorg Med Chem Lett 2010; 20:7469-72. [DOI: 10.1016/j.bmcl.2010.10.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2010] [Revised: 10/01/2010] [Accepted: 10/05/2010] [Indexed: 12/01/2022]
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Wang A, Zhang Y, Lu S, Murray WV, Kuo GH. An efficient and scalable synthesis of (2R,αS)-3,4-dihydro-2-[3-(1,1,2,2-tetrafluoroethoxy)phenyl]-5-[3-(trifluoromethoxy)phenyl]-α-(trifluoromethyl)-1(2H)-quinolineethanol: A potent CETP inhibitor. J Heterocycl Chem 2010. [DOI: 10.1002/jhet.488] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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