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Alami M, Provot O. Recent advances in the synthesis of dibenzofurans. Org Biomol Chem 2024; 22:1323-1345. [PMID: 38258989 DOI: 10.1039/d3ob01736b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
This review reports recent accesses to the dibenzofuran nucleus described in the literature since 2008. This article starts with synthesizing dibenzofurans by creating the C-O bond of the furan ring. In the following section, we evoke the formation of dibenzofurans by cyclizing diarylether derivatives. The last part of this update concerns the construction of dibenzofurans from benzofuran or phenol derivatives. Representative examples showing the scope of these processes illustrate new approaches and biological activities of dibenzofurans. Reaction mechanisms explaining certain dibenzofuran formation are described, as suggested by their authors.
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Affiliation(s)
- Mouad Alami
- Université Paris-Saclay, CNRS, BioCIS, 94400, Orsay, France.
| | - Olivier Provot
- Université Paris-Saclay, CNRS, BioCIS, 94400, Orsay, France.
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2
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Dehydrative Beckmann rearrangement and the following cascade reactions. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.10.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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3
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Farajpour B, Alizadeh A. Recent advances in the synthesis of cyclic compounds using α,α-dicyanoolefins as versatile vinylogous nucleophiles. Org Biomol Chem 2022; 20:8366-8394. [DOI: 10.1039/d2ob01551j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
This article provides a review of the applications of α,α-dicyanoolefins as versatile vinylogous nucleophiles in the synthesis of various cyclic compounds, covering the literature from the past 13 years.
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Affiliation(s)
- Behnaz Farajpour
- Department of Chemistry, Tarbiat Modares University, P. O. Box 14115-175, Tehran, Iran
| | - Abdolali Alizadeh
- Department of Chemistry, Tarbiat Modares University, P. O. Box 14115-175, Tehran, Iran
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4
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Singh R, Horsten T, Prakash R, Dey S, Dehaen W. Application of the Meerwein reaction of 1,4-benzoquinone to a metal-free synthesis of benzofuropyridine analogues. Beilstein J Org Chem 2021; 17:977-982. [PMID: 33981368 PMCID: PMC8093549 DOI: 10.3762/bjoc.17.79] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 04/20/2021] [Indexed: 11/23/2022] Open
Abstract
Several new heterocyclic systems based on a hydroxybenzofuro[2,3-b]pyridine building block were prepared. This benzofuropyridine is easily available from the Meerwein reaction of benzoquinone and a heterocyclic diazonium salt, followed by reduction and cyclization. Electrophilic substitution and further condensations give polycyclic systems, including oxazolo- and chromeno-fused analogues.
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Affiliation(s)
- Rashmi Singh
- Department of Chemistry, Indian Institute of Technology (Indian School of Mines) Dhanbad, Dhanbad 826004, India.,Department of Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Tomas Horsten
- Department of Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Rashmi Prakash
- Department of Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Swapan Dey
- Department of Chemistry, Indian Institute of Technology (Indian School of Mines) Dhanbad, Dhanbad 826004, India
| | - Wim Dehaen
- Department of Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
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5
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He X, Li R, Choy PY, Xie M, Duan J, Tang Q, Shang Y, Kwong FY. A cascade double 1,4-addition/intramolecular annulation strategy for expeditious assembly of unsymmetrical dibenzofurans. Commun Chem 2021; 4:42. [PMID: 36697592 PMCID: PMC9814151 DOI: 10.1038/s42004-021-00478-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Accepted: 02/18/2021] [Indexed: 01/28/2023] Open
Abstract
Existing synthetic routes for accessing dibenzofuran core have intrinsic regioselectivity, limiting the substitution patterns available in heteropolycyclic arene products. Here we report a double 1,4-conjugate addition/intramolecular annulation cascade reaction between propargylamines and two equivalents of imidazolium methylides that allows efficient access of structurally versatile dibenzofurans. This transition metal-free protocol proceeds smoothly under bench-top air atmosphere and offers easy manipulation of substituents on the dibenzofuran core, and also provides good-to-excellent product yields with good functional group tolerance, particularly the -Br and -Cl groups which are often incompatible with existing metal-catalyzed C-C and/or C-O bond ring-forming processes. It is worth noting that ladder-type π-systems with all-arene quarternary carbon structure can be straightforwardly generated upon simple late-stage functionalization.
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Affiliation(s)
- Xinwei He
- grid.440646.40000 0004 1760 6105Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000 PR China ,State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The Chinese University of Hong Kong, New Territories, Shatin, Hong Kong SAR PR China
| | - Ruxue Li
- grid.440646.40000 0004 1760 6105Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000 PR China
| | - Pui Ying Choy
- State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The Chinese University of Hong Kong, New Territories, Shatin, Hong Kong SAR PR China
| | - Mengqing Xie
- grid.440646.40000 0004 1760 6105Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000 PR China
| | - Jiahui Duan
- grid.440646.40000 0004 1760 6105Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000 PR China
| | - Qiang Tang
- grid.440646.40000 0004 1760 6105Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000 PR China
| | - Yongjia Shang
- grid.440646.40000 0004 1760 6105Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000 PR China
| | - Fuk Yee Kwong
- State Key Laboratory of Synthetic Chemistry and Department of Chemistry, The Chinese University of Hong Kong, New Territories, Shatin, Hong Kong SAR PR China
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Chen H, Yan Y, Zhang N, Mo Z, Xu Y, Chen Y. Visible-Light-Induced Cyclization/Aromatization of 2-Vinyloxy Arylalkynes: Synthesis of Thio-Substituted Dibenzofuran Derivatives. Org Lett 2020; 23:376-381. [DOI: 10.1021/acs.orglett.0c03876] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Hui Chen
- College of Pharmacy, Guilin Medical University, Guilin 541004, People’s Republic of China
| | - Yunyun Yan
- Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji, Shaanxi 721013, People’s Republic of China
| | - Niuniu Zhang
- College of Pharmacy, Guilin Medical University, Guilin 541004, People’s Republic of China
| | - Zuyu Mo
- College of Pharmacy, Guilin Medical University, Guilin 541004, People’s Republic of China
| | - Yanli Xu
- College of Pharmacy, Guilin Medical University, Guilin 541004, People’s Republic of China
- Key Laboratory of Agricultural Resources Chemistry and Biotechnology, College of Chemistry and Food Science of Yulin Normal University, Yulin 537000, People’s Republic of China
| | - Yanyan Chen
- College of Pharmacy, Guilin Medical University, Guilin 541004, People’s Republic of China
- Key Laboratory of Agricultural Resources Chemistry and Biotechnology, College of Chemistry and Food Science of Yulin Normal University, Yulin 537000, People’s Republic of China
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7
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Jiang P, Chen S, Xia Y, Zhang Q, Deng GJ. Access to Dibenzofurans through Dimerization/Trimerization of Cyclohexanones Followed by Dehydroaromatization. Org Lett 2020; 22:8076-8081. [DOI: 10.1021/acs.orglett.0c03023] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Pingyu Jiang
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Shanping Chen
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Yi Xia
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Qingqing Zhang
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Guo-Jun Deng
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China
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Wang L, Zhang S, Wang Y, Zhang B. The geometry relaxation and photodeactivation from the S 2 state of dibenzofuran studied by ultrafast spectroscopy. Z PHYS CHEM 2020. [DOI: 10.1515/zpch-2020-0010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Dibenzofuran (DBF) has attracted much attention from scientists recently since it is applied as a photoluminescence material and pharmaceutically active compound. Since the polychlorinated derivatives are highly toxic and manifest photostability in the environment. Femtosecond transient absorption spectroscopy associated with quantum chemical calculations are employed to investigate the ultrafast excited state dynamics of dibenzofuran from the S2 state in 1,4-dioxane and ethanol, respectively. Following excitation at a wavelength of 266 nm, the S2 state is firstly populated in the Franck–Condon region and preserves the planar molecular structure of the ground state. The observed increase of the transient absorption spectra of the excited state within the first several picoseconds indicates a geometry relaxation occurring on the S2 potential energy surface. The subsequent kinetic traces of excited state absorption show that the S2 state in the adiabatic region decays to the S1 state through a fast internal conversion, followed by intersystem crossing to the T1 state with a decay time of tens and hundreds of picoseconds in ethanol and 1,4-dioxane, respectively. Finally, the deactivation processes from the S1 or T state are slow and take place on a time scale of about 20 ns.
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Affiliation(s)
- Lian Wang
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics , Wuhan Institute of Physics and Mathematics , Innovation Academy for Precision Measurement Science and Technology , Chinese Academy of Sciences , Wuhan , 430071 , China
- University of Chinese Academy of Sciences , Beijing , 100049 , China
| | - Song Zhang
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics , Wuhan Institute of Physics and Mathematics , Innovation Academy for Precision Measurement Science and Technology , Chinese Academy of Sciences , Wuhan , 430071 , China
- University of Chinese Academy of Sciences , Beijing , 100049 , China
| | - Ye Wang
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics , Wuhan Institute of Physics and Mathematics , Innovation Academy for Precision Measurement Science and Technology , Chinese Academy of Sciences , Wuhan , 430071 , China
- University of Chinese Academy of Sciences , Beijing , 100049 , China
| | - Bing Zhang
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics , Wuhan Institute of Physics and Mathematics , Innovation Academy for Precision Measurement Science and Technology , Chinese Academy of Sciences , Wuhan , 430071 , China
- University of Chinese Academy of Sciences , Beijing , 100049 , China
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Xu F, Liang Y, Ren J, Wang S, Zhan J. Discovery of a novel analogue of FR901533 and the corresponding biosynthetic gene cluster from Streptosporangium roseum No. 79089. Appl Microbiol Biotechnol 2020; 104:7131-7142. [DOI: 10.1007/s00253-020-10765-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 06/22/2020] [Accepted: 06/30/2020] [Indexed: 11/29/2022]
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10
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Zhuo JR, Quan BX, Zhao JQ, Zhang ML, Chen YZ, Zhang XM, Yuan WC. Base-mediated [4+2] annulation of electron-deficient nitrobenzoheterocycles and α,α-dicyanoalkenes in water: Facile access to structurally diverse functionalized dibenzoheterocyclic compounds. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131115] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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11
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Wang L, Zhang S, Wang Y, Zhang B. Effect of hydrogen bonding on the nonradiative properties of dibenzofuran. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 224:117466. [PMID: 31422340 DOI: 10.1016/j.saa.2019.117466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 07/27/2019] [Accepted: 08/09/2019] [Indexed: 06/10/2023]
Abstract
Femtosecond time-resolved transient absorption spectroscopy is employed to investigate the ultrafast excited-state dynamics from the S2 state of dibenzofuran and the hydrogen bonding effect in protic and aprotic solvents. Following the excitation with 266 nm, the initial population on the S2 state couples to the S1 state via internal conversion on tens of picoseconds. Afterwards, vibrational energy relaxation (VER) with dozens of picoseconds is determined in all solvents and strongly depended on the polarities of aprotic solvents. And the rising species related with the hydrogen-bonded intermediate S⁎ state are observed just in ethanol and methanol with the higher Kamlet parameter α. Subsequently, the intersystem crossing from the S1 state to the triplet manifold is a main deactivation pathway with the decay time of ≫ns. All the relaxation processes exhibit solvent dependence, indicating that hydrogen bonding interaction between solute and solvent enhances VER and significantly influences on the excited state dynamics of dibenzofuran.
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Affiliation(s)
- Lian Wang
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, PR China; Graduate School of the Chinese Academy of Sciences, Beijing, PR China
| | - Song Zhang
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, PR China.
| | - Ye Wang
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, PR China; Graduate School of the Chinese Academy of Sciences, Beijing, PR China
| | - Bing Zhang
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, PR China.
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12
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Shao J, Chen W, Ying Z, Liu S, Luo F, Ou L. Sulfur Ylide Initiated [4 + 1]/[4 + 2] Annulation Reactions: A One-Pot Approach to Dibenzofuran Acrylate Derivatives. Org Lett 2019; 21:6370-6373. [DOI: 10.1021/acs.orglett.9b02260] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jiaan Shao
- School of Medicine, Zhejiang University City College, Hangzhou, 310015, P. R. China
| | - Wenteng Chen
- College of Pharmaceutical Science, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Zhimin Ying
- College of Pharmaceutical Science, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Shuangrong Liu
- College of Pharmaceutical Science, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Feng Luo
- College of Pharmaceutical Science, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Lili Ou
- Hangzhou Zhongmei Huadong Pharmaceutical Co., Ltd., Hangzhou, 310011, P. R. China
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13
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Wang S, Zang J, Huang M, Guan L, Xing K, Zhang J, Liu D, Zhao L. Discovery of novel (+)-Usnic acid derivatives as potential anti-leukemia agents with pan-Pim kinases inhibitory activity. Bioorg Chem 2019; 89:102971. [PMID: 31200288 DOI: 10.1016/j.bioorg.2019.102971] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 04/20/2019] [Accepted: 04/30/2019] [Indexed: 11/24/2022]
Abstract
Usnic acid (UA) is the main secondary metabolite isolated from lichens, with moderate anticancer activity. A small group of (+)-UA derivatives characterized with flavanone moiety was designed and synthesized, and their anticancer activities were evaluated in leukemia cells. It was demonstrated that (+)-UA derivatives 6a-6g inhibited the proliferation of leukemia cells HL-60 and K562 with low micromolar IC50 values. Mechanisms of action were investigated to find that 6g induced apoptosis in HL-60 and K562 cell lines, and affected the expression of MNK/eIF4E axis-related proteins, such as Mcl-1, p-eIF4E, p-4E-BP1. Finally, kinase inhibition assay suggested 6g was a potential inhibitor of pan-Pim kinases. Meanwhile, the blocking of phosphorylation of BAD and 4E-BP1 by 6g, together with the proposed binding mode of 6g with Pim-1 further confirmed its Pim inhibition effects. Our finding provides the sight towards the potential mechanism of (+)-UA derivatives 6g as anti-leukemia agents.
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Affiliation(s)
- Shuxiang Wang
- Key Laboratory of Structure-Based Drugs Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Jie Zang
- Key Laboratory of Structure-Based Drugs Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Min Huang
- Key Laboratory of Structure-Based Drugs Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Lihong Guan
- Key Laboratory of Structure-Based Drugs Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Kun Xing
- Key Laboratory of Structure-Based Drugs Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Jian Zhang
- Key Laboratory of Structure-Based Drugs Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Dan Liu
- Key Laboratory of Structure-Based Drugs Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China.
| | - Linxiang Zhao
- Key Laboratory of Structure-Based Drugs Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China.
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Popova EA, Trifonov RE, Ostrovskii VA. Tetrazoles for biomedicine. RUSSIAN CHEMICAL REVIEWS 2019. [DOI: 10.1070/rcr4864] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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15
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Bogart JW, Bowers AA. Dehydroamino acids: chemical multi-tools for late-stage diversification. Org Biomol Chem 2019; 17:3653-3669. [PMID: 30849157 PMCID: PMC6637761 DOI: 10.1039/c8ob03155j] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
α,β-Dehydroamino acids (dhAAs) are noncanonical amino acids that are found in a wide array of natural products and can be easily installed into peptides and proteins. dhAAs exhibit remarkable synthetic flexibility, readily undergoing a number of reactions, such as polar and single-electron additions, transition metal catalyzed cross-couplings, and cycloadditions. Because of the relatively mild conditions required for many of these reactions, dhAAs are increasingly being used as orthogonal chemical handles for late-stage modification of biomolecules. Still, only a fraction of the chemical reactivity of dhAAs has been exploited in such biorthogonal applications. Herein, we provide an overview of the broad spectrum of chemical reactivity of dhAAs, with special emphasis on recent efforts to adapt such transformations for biomolecules such as natural products, peptides, and proteins. We also discuss examples of enzymes from natural product biosynthetic pathways that have been found to catalyze many similar reactions; these enzymes provide mild, regio- and stereoselective, biocatalytic alternatives for future development. We anticipate that the continued investigation of the innate reactivity of dhAAs will furnish a diverse portfolio dhAA-based chemistries for use in chemical biology and drug discovery.
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Affiliation(s)
- Jonathan W Bogart
- Division of Chemical Biology and Medicinal Chemistry Eshelman School of Pharmacy, and Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.
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Dastoorani P, Khalilzadeh MA, Khaleghi F, Maghsoodlou MT, Kaminsky W, Shokuhi Rad A. Experimental and computational studies on the synthesis of diastereoselective natural-based Meldrum spiro dibenzofuran derivatives. NEW J CHEM 2019. [DOI: 10.1039/c9nj00766k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, a novel route to achieve chiral Meldrum spiro dibenzofuran derivatives was developed, which involved a 2,2-dimethyl-1,3-dioxane-4,6-dione (Meldrum's acid)-mediated Knoevenagel reaction of substituted aryl halides, followed by a Diels–Alder reaction with euparin as a natural compound.
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Affiliation(s)
| | - Mohammad A. Khalilzadeh
- Department of Chemistry
- College of Natural Resources
- North Carolina State University
- Raleigh
- USA
| | - Fatemeh Khaleghi
- The Health of Plant and Livestock Products Research Center
- Mazandaran University of Medical Sciences
- Sari
- Iran
| | | | | | - Ali Shokuhi Rad
- Department of Chemical Engineering
- Qaemshahr Branch
- Islamic Azad University
- Qaemshahr
- Iran
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17
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Qian R, Kuliszewska E, Macoratti E, Hammerschmidt F. Chemoenzymatic Synthesis of Racemic and Enantiomerically Pure Phosphaaspartic Acid and Phosphaarginine. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700948] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Renzhe Qian
- Institut für Organische Chemie; Universität Wien; Wien Austria
| | | | - Elena Macoratti
- Institut für Organische Chemie; Universität Wien; Wien Austria
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18
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Botla V, Pilli N, Koude D, Misra S, Malapaka C. Molecular Engineering of Tetracyclic 2,3-Dihydro-1H-benzo[2,3]-benzofuro[4,5-e][1,3]oxazine Derivatives: Evaluation for Potential Anticancer Agents. Arch Pharm (Weinheim) 2017; 350. [PMID: 28834614 DOI: 10.1002/ardp.201700169] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Revised: 07/20/2017] [Accepted: 07/21/2017] [Indexed: 11/08/2022]
Abstract
Water-mediated one-pot Mannich type condensation of dibenzo[b,d]furan-2-ol with different amines resulted in a large library of novel 2,3-dihydro-1H-benzo[2,3]benzofuro[4,5-e][1,3]oxazine derivatives in moderate to excellent yields. The ortho-aminomethylation of the dibenzofuranols proceeded smoothly in the presence of various aromatic/aliphatic amines and paraformaldehyde, followed by cyclization. All the newly synthesized tetracyclic 2,3-dihydro-1H-benzo[2,3]benzofuro[4,5-e][1,3]oxazine derivatives were chemically characterized and screened for their cytotoxicity activity by cell viability assay (MTT test) against three human cancer cell lines and antibacterial activity by determining the minimum inhibitory concentration (MIC) against four bacterial strains. Among all the derivatives, MCV-24 showed promising anticancer activity by inhibiting the cell proliferation of an ovarian cancer cell line (SKOV3) with an IC50 value at 7.5 µM, whereas MCV-24 to MCV-30 derivatives showed moderate activity against a lung cancer cell line (A549) with an IC50 value ranging from 11 to 15.9 µM. Besides MCV-29, -30, and -31 also exhibited broad-spectrum antibacterial activity. Among all new compounds, MCV-24-30 showed promising anticancer and MCV-29-31 antibacterial activity.
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Affiliation(s)
- Vinayak Botla
- Inorganic and Physical Chemistry Division, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, India
| | - NavyaSree Pilli
- Inorganic and Physical Chemistry Division, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, India
| | - Dhevendar Koude
- Division of Biology, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, India
| | - Sunil Misra
- Division of Biology, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, India
| | - Chandrasekharam Malapaka
- Inorganic and Physical Chemistry Division, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, India
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19
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Parveen I, Ahmed N. CuI mediated synthesis of heterocyclic flavone-benzofuran fused derivatives. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.04.101] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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Yempala T, Cassels BK. Synthesis, scope, 1H and 13C spectral assignments of isomeric dibenzofuran carboxaldehydes. RESEARCH ON CHEMICAL INTERMEDIATES 2016. [DOI: 10.1007/s11164-016-2698-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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21
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Hong F, Chen Y, Lu B, Cheng J. One-Pot Assembly of Fused Heterocycles via
Oxidative Palladium-Catalyzed Cyclization of Arylols and Iodoarenes. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201500925] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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22
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Paul K, Jalal S, Kundal S, Jana U. Synthesis of Fused Dibenzofuran Derivatives via Palladium-Catalyzed Domino C–C Bond Formation and Iron-Catalyzed Cycloisomerization/Aromatization. J Org Chem 2016; 81:1164-74. [PMID: 26728954 DOI: 10.1021/acs.joc.5b02637] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kartick Paul
- Department of Chemistry, Jadavpur University, Kolkata 700 032, West
Bengal, India
| | - Swapnadeep Jalal
- Department of Chemistry, Jadavpur University, Kolkata 700 032, West
Bengal, India
| | - Sandip Kundal
- Department of Chemistry, Jadavpur University, Kolkata 700 032, West
Bengal, India
| | - Umasish Jana
- Department of Chemistry, Jadavpur University, Kolkata 700 032, West
Bengal, India
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23
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Popova EA, Trifonov RE. Synthesis and biological properties of amino acids and peptides containing a tetrazolyl moiety. RUSSIAN CHEMICAL REVIEWS 2015. [DOI: 10.1070/rcr4527] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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24
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Panda N, Mattan I, Nayak DK. Synthesis of Dibenzofurans via C–H Activation of o-Iodo Diaryl Ethers. J Org Chem 2015; 80:6590-7. [DOI: 10.1021/acs.joc.5b00634] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Niranjan Panda
- Department of Chemistry, National Institute of Technology Rourkela, Odisha 769008, India
| | - Irshad Mattan
- Department of Chemistry, National Institute of Technology Rourkela, Odisha 769008, India
| | - Dinesh Kumar Nayak
- Department of Chemistry, National Institute of Technology Rourkela, Odisha 769008, India
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25
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Synthesis of dibenzo[b,d]furans through one-pot cascade reactions of 1-arylpenta-3,4-dien-2-ones with activated ketones. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.01.179] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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26
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Kotha S, Bandarugattu VB, Krishna NG. Diversity-oriented approach to unusual amino acid derivatives and heterocycles via methyl 2-acetamidoacrylate and its congeners. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.05.056] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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27
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Perindopril and ramipril phosphonate analogues as a new class of angiotensin converting enzyme inhibitors. Bioorg Med Chem 2013; 21:7216-21. [DOI: 10.1016/j.bmc.2013.08.032] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Revised: 06/25/2013] [Accepted: 08/16/2013] [Indexed: 11/24/2022]
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28
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Wang X, Xiang Y, Ren Z, Zhang Y, Qiao Y. Rational questing for inhibitors of endothelin converting enzyme-1 from Salvia miltiorrhiza by combining ligand- and structure-based virtual screening. CAN J CHEM 2013. [DOI: 10.1139/cjc-2012-0523] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
In this study, a virtual screening approach based on pharmacophore and molecular docking was proposed to identify endothelin converting enzyme-1 (ECE-1) (EC 3.4.24.71) inhibitors from Salvia miltiorrhiza. First, the pharmacophore models were generated to recognize the common features of the ECE-1 inhibitors. The models were validated by a test database composed by a set of compounds known as ECE-1 inhibitors and nonactive compounds and proven to be successful in discriminating active and inactive inhibitors. Then, the best pharmacophore model was used to screen the compounds from S. miltiorrhiza. Furthermore, the Surflex-Dock procedure was used for molecular docking. All compounds from S. miltiorrhiza were docked into the active site of the target protein. An empirical scoring function was used to evaluate the affinity of the compounds and the target protein. Comparing the virtual screening results based on pharmacophore and molecular docking, respectively, 11 communal compounds with higher QFIT and docking score were hit, and the activity of some compounds was validated in the literature. The binding modes between these compounds and the ECE-1 binding site were predicted and used to identify the key interactions that contribute to the inhibitory activity of ECE-1 activity. The results show that the two methods have good consistency and can be validated and supplemented with each other.
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Affiliation(s)
- Xing Wang
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China
| | - Yuhong Xiang
- Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Zhenzhen Ren
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China
| | - Yanling Zhang
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China
| | - Yanjiang Qiao
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100102, China
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29
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Pacheco-Quinto J, Eckman EA. Endothelin-converting enzymes degrade intracellular β-amyloid produced within the endosomal/lysosomal pathway and autophagosomes. J Biol Chem 2013; 288:5606-15. [PMID: 23283972 DOI: 10.1074/jbc.m112.422964] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Impairments in Aβ removal are increasingly being considered as a possible cause for the abnormal Aβ build-up typical of Alzheimer disease. Of particular interest is a pool of Aβ that accumulates intraneuronally and may contribute to neuronal toxicity. The mechanism for intraneuronal accumulation, however, is not well understood and is commonly attributed to impaired removal of extracellular Aβ by neurons. Based on the intracellular distribution of the well established Aβ degrading enzymes, ECE-1 and ECE-2, we tested whether impairments in their catalytic activity could lead to intracellular Aβ accumulation. Using SH-SY5Y cells overexpressing wild-type amyloid precursor protein and pharmacological inhibition of endogenous ECE activity, we found that ECEs participate in the degradation of at least two distinct pools of Aβ; one destined for secretion and the other being produced and degraded within the endosomal-autophagic-lysosomal pathways. Although ECE-1 regulates both pools of Aβ, ECE-2 regulates mainly the intracellular pool of the peptide. Consistent with this result, ECE-2 was found to co-localize with markers of the endosomal/lysosomal pathway but not with a trans-Golgi network marker. Furthermore, ECE-2 was detected in autophagic vesicles in cells treated with chloroquine. Under these conditions, ECE inhibition produced significantly higher elevations in intracellular Aβ than chloroquine treatment alone. This study highlights the existence of Aβ clearance mechanisms by ECEs at intracellular sites of production. Alterations in ECE activity may be considered as a cause for increased intraneuronal Aβ in Alzheimer disease.
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Affiliation(s)
- Javier Pacheco-Quinto
- Biomedical Research Institute of New Jersey, MidAtlantic Neonatology Associates and Atlantic Health System, Morristown, New Jersey 07960, USA
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30
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Zhao J, Zhang Q, Liu L, He Y, Li J, Li J, Zhu Q. CuI-Mediated Sequential Iodination/Cycloetherification of o-Arylphenols: Synthesis of 2- or 4-Iododibenzofurans and Mechanistic Studies. Org Lett 2012; 14:5362-5. [PMID: 23025569 DOI: 10.1021/ol302562a] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Jiaji Zhao
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, P. R. China, and Department of Chemistry, Jinan University, Huangpu Road West 601, Guangzhou 510632, P. R. China
| | - Qi Zhang
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, P. R. China, and Department of Chemistry, Jinan University, Huangpu Road West 601, Guangzhou 510632, P. R. China
| | - Lanying Liu
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, P. R. China, and Department of Chemistry, Jinan University, Huangpu Road West 601, Guangzhou 510632, P. R. China
| | - Yimiao He
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, P. R. China, and Department of Chemistry, Jinan University, Huangpu Road West 601, Guangzhou 510632, P. R. China
| | - Jing Li
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, P. R. China, and Department of Chemistry, Jinan University, Huangpu Road West 601, Guangzhou 510632, P. R. China
| | - Juan Li
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, P. R. China, and Department of Chemistry, Jinan University, Huangpu Road West 601, Guangzhou 510632, P. R. China
| | - Qiang Zhu
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, P. R. China, and Department of Chemistry, Jinan University, Huangpu Road West 601, Guangzhou 510632, P. R. China
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31
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Roh J, Vávrová K, Hrabálek A. Synthesis and Functionalization of 5-Substituted Tetrazoles. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200469] [Citation(s) in RCA: 206] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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32
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Zhao J, Wang Y, He Y, Liu L, Zhu Q. Cu-Catalyzed Oxidative C(sp2)–H Cycloetherification of o-Arylphenols for the Preparation of Dibenzofurans. Org Lett 2012; 14:1078-81. [DOI: 10.1021/ol203442a] [Citation(s) in RCA: 113] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Jiaji Zhao
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, China
| | - Yong Wang
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, China
| | - Yimiao He
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, China
| | - Lanying Liu
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, China
| | - Qiang Zhu
- State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, China
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33
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Bilge S, Kılıç Z, Davies DB. Syntheses, spectroscopic properties and stereochemistry of bis-C-pivot macrocycles with two dialkyl phosphonate groups. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 81:441-448. [PMID: 21763186 DOI: 10.1016/j.saa.2011.06.034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2011] [Revised: 06/14/2011] [Accepted: 06/16/2011] [Indexed: 05/31/2023]
Abstract
Bis-C-pivot macrocycles containing dimethyl (1a, 2a) or diethyl phosphonate (1b, 2b) groups have been prepared by adding dimethyl or diethyl phosphite to two -CH=N bonds in corresponding dibenzo-bis-imino crown ethers (1 and 2). Bis-C-pivot macrocycles possess two equivalent stereogenic centres giving rise to diastereoisomers (meso and racemate). The structures were characterized by elemental analysis, FTIR, MS, TGA, DSC and NMR measurements. (1)H, (13)C and (31)P NMR assignments were made for the isolated meso form of compounds 2a and 2b and for the meso and racemic forms of compounds 1a and 1b by analysis of chemical shifts, signal intensities and splitting patterns and the DEPT and 2D HETCOR NMR techniques. Thermal analysis and (1)H NMR showed that the crystallised form of compound 1a contained an equimolar amount of water of crystallisation.
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Affiliation(s)
- Selen Bilge
- Department of Chemistry, Ankara University, 06100 Tandoğan-Ankara, Turkey.
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34
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Ferraris DM, Sbardella D, Petrera A, Marini S, Amstutz B, Coletta M, Sander P, Rizzi M. Crystal structure of Mycobacterium tuberculosis zinc-dependent metalloprotease-1 (Zmp1), a metalloprotease involved in pathogenicity. J Biol Chem 2011; 286:32475-82. [PMID: 21813647 PMCID: PMC3173161 DOI: 10.1074/jbc.m111.271809] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2011] [Revised: 07/20/2011] [Indexed: 11/06/2022] Open
Abstract
Mycobacterium tuberculosis, the causative agent of tuberculosis, parasitizes host macrophages. The resistance of the tubercle bacilli to the macrophage hostile environment relates to their ability to impair phagosome maturation and its fusion with the lysosome, thus preventing the formation of the phago-lysosome and eventually arresting the process of phagocytosis. The M. tuberculosis zinc-dependent metalloprotease Zmp1 has been proposed to play a key role in the process of phagosome maturation inhibition and emerged as an important player in pathogenesis. Here, we report the crystal structure of wild-type Zmp1 at 2.6 Å resolution in complex with the generic zinc metalloprotease inhibitor phosphoramidon, which we demonstrated to inhibit the enzyme potently. Our data represent the first structural characterization of a bacterial member of the zinc-dependent M13 endopeptidase family and revealed a significant degree of conservation with eukaryotic enzymes. However, structural comparison of the Zmp1-phosphoramidon complex with homologous human proteins neprilysin and endothelin-converting enzyme-1 revealed unique features of the Zmp1 active site to be exploited for the rational design of specific inhibitors that may prove useful as a pharmacological tool for better understanding Zmp1 biological function.
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Affiliation(s)
- Davide M. Ferraris
- From the DISCAFF Department of Chemical, Food, Pharmaceutical and Pharmacological Sciences, University of Piemonte Orientale A. Avogadro, 28100 Novara, Italy
| | - Diego Sbardella
- the Department of Experimental Medicine and Biochemical Sciences, University of Rome “Tor Vergata”, 00133 Rome, Italy
- the Interuniversity Consortium for Research on the Chemistry of Metals in Biological Systems, 70126 Bari, Italy, and
| | - Agnese Petrera
- the Institute of Medical Microbiology, University of Zurich, 8006 Zurich, Switzerland
| | - Stefano Marini
- the Department of Experimental Medicine and Biochemical Sciences, University of Rome “Tor Vergata”, 00133 Rome, Italy
| | - Beat Amstutz
- the Institute of Medical Microbiology, University of Zurich, 8006 Zurich, Switzerland
| | - Massimo Coletta
- From the DISCAFF Department of Chemical, Food, Pharmaceutical and Pharmacological Sciences, University of Piemonte Orientale A. Avogadro, 28100 Novara, Italy
- the Department of Experimental Medicine and Biochemical Sciences, University of Rome “Tor Vergata”, 00133 Rome, Italy
| | - Peter Sander
- the Institute of Medical Microbiology, University of Zurich, 8006 Zurich, Switzerland
| | - Menico Rizzi
- From the DISCAFF Department of Chemical, Food, Pharmaceutical and Pharmacological Sciences, University of Piemonte Orientale A. Avogadro, 28100 Novara, Italy
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35
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Kantevari S, Yempala T, Yogeeswari P, Sriram D, Sridhar B. Synthesis and antitubercular evaluation of amidoalkyl dibenzofuranols and 1H-benzo[2,3]benzofuro[4,5-e][1,3]oxazin-3(2H)-ones. Bioorg Med Chem Lett 2011; 21:4316-9. [DOI: 10.1016/j.bmcl.2011.05.054] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2011] [Revised: 05/02/2011] [Accepted: 05/17/2011] [Indexed: 10/18/2022]
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36
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Xiao B, Gong TJ, Liu ZJ, Liu JH, Luo DF, Xu J, Liu L. Synthesis of dibenzofurans via palladium-catalyzed phenol-directed C-H activation/C-O cyclization. J Am Chem Soc 2011; 133:9250-3. [PMID: 21609019 DOI: 10.1021/ja203335u] [Citation(s) in RCA: 280] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A practical, Pd(0)/Pd(II)-catalyzed reaction was developed for phenol-directed C-H activation/C-O cyclization using air as an oxidant. The turnover-limiting step of the process was found to be C-O reductive elimination instead of C-H activation. This reaction can tolerate a variety of functional groups and is complementary to the previous methods for the synthesis of substituted dibenzofurans.
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Affiliation(s)
- Bin Xiao
- Department of Chemistry, Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Tsinghua University, Beijing 100084, China
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37
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MMP-13 selective α-sulfone hydroxamates: A survey of P1′ heterocyclic amide isosteres. Bioorg Med Chem Lett 2011; 21:2820-2. [DOI: 10.1016/j.bmcl.2011.03.099] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2011] [Revised: 03/23/2011] [Accepted: 03/24/2011] [Indexed: 11/22/2022]
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38
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Tibhe GD, Labastida-Galván V, Ordóñez M. Study of the fragmentation pathway of α-aminophosphonates by chemical ionization and fast atom bombardment mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2011; 25:951-959. [PMID: 21416532 DOI: 10.1002/rcm.4938] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2010] [Revised: 01/17/2011] [Accepted: 01/18/2011] [Indexed: 05/30/2023]
Abstract
The diastereoisomers of α-aminophosphonates are key intermediates in the synthesis of enantiomerically pure α-aminophosphonic acids, which are analogs of α-amino acids. Although several methods have been reported for the diastereoselective synthesis of α-aminophosphonates, their mass spectrometry (MS) fragmentation patterns have not yet been fully investigated. The work described here involved a detailed study of the fragmentation of enriched α-aminophosphonate diastereoisomers by chemical ionization (CI-MS) and fast atom bombardment (FAB)-MS. The complete characterization of the different conventional MS fragmentation pathways is represented and this intriguing exercise required the use of tandem mass spectrometry (MS/MS) experiments and high-resolution accurate mass measurements. All α-aminophosphonates gave prominent pseudomolecular ions, protonated molecules [MH](+) , and their fragmentations mainly showed a loss of dimethyl phosphite to give the corresponding iminium ions as base peaks for α-aminophosphonates bearing methylbenzyl and 2,2-dimethylbutyl fragments. The loss of the chiral fragment from the iminium ions bearing the (S)-1-(1-naphthyl)ethyl group gave rise to a base peak due to aryl cations. The nature of all fragment ions were confirmed by high-resolution mass spectrometry (HRMS).
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Affiliation(s)
- Gaurao D Tibhe
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, Av. Universidad No. 1001, 62210 Cuernavaca, Mor., México
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39
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Sung HL, Hsu HL. The reactivity of TMSN3 with ruthenium cyclopropenyl complexes containing different ligands and different substituent at Cγ. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2010.12.017] [Citation(s) in RCA: 3] [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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40
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Wang R, Dashwood RH. Endothelins and their receptors in cancer: identification of therapeutic targets. Pharmacol Res 2011; 63:519-24. [PMID: 21251982 DOI: 10.1016/j.phrs.2011.01.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2010] [Revised: 12/21/2010] [Accepted: 01/04/2011] [Indexed: 11/15/2022]
Abstract
Endothelins and their receptors are important in normal physiology, but have been implicated in various pathophysiological conditions. Members of the so-called "endothelin axis" are dysregulated in a wide range of human cancers, opening the door for novel anticancer therapies. Established cancer chemotherapeutic agents and drugs that target specific components of the endothelin axis have been combined with promising results, but more work is needed in this area. The endothelin axis affects numerous signaling pathways, including Ras, mitogen activated protein kinases, β-catenin/T-cell factor/lymphoid enhancer factor, nuclear factor-κB (NFκB), SNAIL, and mammalian target of rapamycin (mTOR). There is much still to learn about optimizing drug specificity in this area, while minimizing off-target effects. Selective agonists and antagonists of endothelins, their receptors, and upstream processing enzymes, as well as knockdown strategies in vitro, are providing valuable leads for testing in the clinical setting. The endothelin axis continues to be an attractive avenue of scientific endeavor, both in the cancer arena and in other important health-related disciplines.
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Affiliation(s)
- Rong Wang
- Linus Pauling Institute, Oregon State University, Corvallis, OR 97331-6512, USA
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41
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Kaname M, Yoshifuji S, Sashida H. Ruthenium Tetroxide Oxidation of <i>N</i>-Acyl Amines and Related Compounds. J SYN ORG CHEM JPN 2011. [DOI: 10.5059/yukigoseikyokaishi.69.1109] [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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42
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Touti F, Avenier F, Lefebvre Q, Maurin P, Hasserodt J. A Synthon for the Convenient and Efficient Introduction of Tetrazolylmethyl Groups into Nucleophile-Bearing Compounds. European J Org Chem 2010. [DOI: 10.1002/ejoc.200901335] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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43
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Jullien N, Makritis A, Georgiadis D, Beau F, Yiotakis A, Dive V. Phosphinic tripeptides as dual angiotensin-converting enzyme C-domain and endothelin-converting enzyme-1 inhibitors. J Med Chem 2010; 53:208-20. [PMID: 19899765 DOI: 10.1021/jm9010803] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new series of phosphinic inhibitors able to interact with both angiotensin-converting enzyme (ACE) C-domain and endothelin-converting enzyme-1 (ECE-1), while sparing neprilysin (NEP), has been developed. The most potent and selective inhibitor in this series (compound 8(F2)) displays K(i) values of 0.65 nM, 150 nM, 14 nM and 6.7 microM toward somatic ACE C-domain, ACE N-domain, ECE-1, and NEP, respectively. Remarkably, in this series, the inhibitor's ability to discriminate between ECE-1 and NEP was observed to depend on the stereochemistry of the residue present in the inhibitor's P(1)' position. After iv administration, compound 8(F2) (10 mg/kg) lowered mean arterial blood pressure by 24 +/- 2 mmHg in spontaneously hypertensive rats, as compared with controls. Mixed ACE/ECE-1 inhibitor may lead to a new generation of vasopeptide inhibitors that should reduce the levels of angiotensin-II and endothelin-1, without interfering with bradykinin cleavage.
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Affiliation(s)
- Nicolas Jullien
- CEA, DSV, Service d'Ingenierie Moleculaire des Proteines (SIMOPRO), Bat 152, CE-Saclay, Gif/Yvette 91191 Cedex, France
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44
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Komine Y, Kamisawa A, Tanaka K. Flexible Synthesis of Fused Benzofuran Derivatives by Rhodium-Catalyzed [2 + 2 + 2] Cycloaddition with Phenol-Linked 1,6-Diynes. Org Lett 2009; 11:2361-4. [DOI: 10.1021/ol900802d] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yoshiyuki Komine
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan
| | - Akiyoshi Kamisawa
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan
| | - Ken Tanaka
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan
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45
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Ordóñez M, Rojas-Cabrera H, Cativiela C. An Overview of Stereoselective Synthesis of α-Aminophosphonic Acids and Derivatives. Tetrahedron 2009; 65:17-49. [PMID: 20871799 PMCID: PMC2943650 DOI: 10.1016/j.tet.2008.09.083] [Citation(s) in RCA: 222] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
An overview of all methodologies published during the last few years focused to the stereoselective (diastereoselective or enantioselective) synthesis of α-aminophosphonic acids and derivatives is reported. The procedures have been classified according a retrosynthetic strategy and taking into account the formation of each one of the bonds connected to the chiral centre.
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Affiliation(s)
- Mario Ordóñez
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, 62209 Cuernavaca, Morelos (México)
| | - Haydée Rojas-Cabrera
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, 62209 Cuernavaca, Morelos (México)
| | - Carlos Cativiela
- Departamento de Química Orgánica, ICMA, Universidad de Zaragoza-CSIC, 50009 Zaragoza (Spain)
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CHEN G, WANG Z, DING K. Asymmetric Conjugate Addition of Unmodified Cyclic Ketones to Nitroolefins Using Aminophosphonate as the Organocatalyst. CHINESE J CHEM 2009. [DOI: 10.1002/cjoc.200990011] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Rao Lingam VSP, Vinodkumar R, Mukkanti K, Thomas A, Gopalan B. Tetra-n-butylammonium Fluoride–Catalyzed Eschenmoser–Claisen [3,3]-Sigmatropic Rearrangement. SYNTHETIC COMMUN 2008. [DOI: 10.1080/00397910802374075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Schulz H, Dale GE, Karimi-Nejad Y, Oefner C. Structure of human endothelin-converting enzyme I complexed with phosphoramidon. J Mol Biol 2008; 385:178-87. [PMID: 18992253 DOI: 10.1016/j.jmb.2008.10.052] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2008] [Revised: 10/07/2008] [Accepted: 10/09/2008] [Indexed: 11/17/2022]
Abstract
Endothelin-converting enzyme I (ECE-1) is a mammalian type II integral membrane zinc-containing endopeptidase. ECE-1 catalyzes the final step in the biosynthesis of endothelins in a rate-limiting fashion, through post-translational conversion of the biologically inactive big endothelins. Endothelin-1 overproduction has been implicated in a heterogeneous list of diseases including systemic and pulmonary hypertension, stroke and asthma, cardiac and renal failure. Therefore, ECE-1 is a prime therapeutic target for the regulation of endothelin-1 production in vivo and there is considerable interest in selective inhibitors of this enzyme. Here, we present the crystal structure of the extracellular domain (residues 90-770) of human ECE-1 (C428S) with the generic metalloprotease inhibitor phosphoramidon determined at 2.38 A resolution. The structure is closely related to that of human NEP, providing essential information for a detailed understanding of ligand-binding, specificity determinants as well as selectivity criteria. Selective inhibitors of ECE-1s should have beneficial effects for the treatment of diseases in which an overproduction of ETs plays a pathogenic role.
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Berestovitskaya VM, Anisimova NA, Kataeva ON, Berkova GA, Jager A. Reaction of alkyl-3-nitro-and-3-bromo-3-nitroacrylates with 2-(2-nitroethenyl)furan. RUSS J GEN CHEM+ 2008. [DOI: 10.1134/s1070363208050216] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Liu J, Fitzgerald AE, Mani NS. Facile Assembly of Fused Benzo[4,5]furo Heterocycles. J Org Chem 2008; 73:2951-4. [DOI: 10.1021/jo8000595] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jing Liu
- Johnson & Johnson Pharmaceutical Research & Development, L.L.C., 3210 Merryfield Row, San Diego, California 92121
| | - Anne E. Fitzgerald
- Johnson & Johnson Pharmaceutical Research & Development, L.L.C., 3210 Merryfield Row, San Diego, California 92121
| | - Neelakandha S. Mani
- Johnson & Johnson Pharmaceutical Research & Development, L.L.C., 3210 Merryfield Row, San Diego, California 92121
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