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Singh A, Kaliappan KP. Asymmetric Total Synthesis of 4-Hydroxy-8- O-methyltetrangomycin, 4-Hydroxytetrangomycin, and 4-Keto-8- O-methyltetrangomycin. J Org Chem 2024; 89:10965-10973. [PMID: 39037742 DOI: 10.1021/acs.joc.4c01393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/23/2024]
Abstract
Herein, we report the first asymmetric total synthesis of 4-hydroxy-8-O-methyltetrangomycin (1), 4-hydroxytetrangomycin (2), and 4-keto-8-O-methyltetrangomycin (3), angucyclinones featuring a highly oxidized nonaromatic A ring. A sequential enyne metathesis/Diels-Alder approach was utilized successfully to construct the tetracyclic skeleton of the angucyclinones. Late-stage acetonide deprotection challenges were overcome by A ring functional group manipulation, yielding a dihydroxy intermediate prior to the benzylic photo-oxidation, facilitating the total syntheses of angucyclinones 1-3. The key stereocenter was established through a known Sharpless asymmetric epoxidation/regioselective epoxide opening reaction.
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Affiliation(s)
- Ajad Singh
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Krishna P Kaliappan
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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2
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Manna T, Rajput A, Saha N, Mondal A, Debnath SC, Husain SM. Chemoenzymatic total synthesis of nodulones C and D using a naphthol reductase of Magnaporthe grisea. Org Biomol Chem 2022; 20:3737-3741. [PMID: 35468177 DOI: 10.1039/d2ob00401a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Herein, the asymmetric and chemoenzymatic synthesis of (R)-nodulone C, cis-nodulone D and related (R)-dihydronaphthalenone is reported. It involves multistep chemical synthesis of putative biosynthetic substrates followed by regio- and stereoselective reduction using a NADPH-dependent tetrahydroxynaphthalene reductase of Magnaporthe grisea to obtain chiral nodulones in a biomimetic fashion.
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Affiliation(s)
- Tanaya Manna
- Department of Biological and Synthetic Chemistry, Centre of Biomedical Research, SGPGIMS Campus, Raebareli Road, Lucknow 226014, Uttar Pradesh, India.
| | - Anshul Rajput
- Department of Biological and Synthetic Chemistry, Centre of Biomedical Research, SGPGIMS Campus, Raebareli Road, Lucknow 226014, Uttar Pradesh, India.
| | - Nirmal Saha
- Department of Biological and Synthetic Chemistry, Centre of Biomedical Research, SGPGIMS Campus, Raebareli Road, Lucknow 226014, Uttar Pradesh, India.
| | - Amit Mondal
- Department of Biological and Synthetic Chemistry, Centre of Biomedical Research, SGPGIMS Campus, Raebareli Road, Lucknow 226014, Uttar Pradesh, India.
| | | | - Syed Masood Husain
- Department of Biological and Synthetic Chemistry, Centre of Biomedical Research, SGPGIMS Campus, Raebareli Road, Lucknow 226014, Uttar Pradesh, India.
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3
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Strategy for identification of cis-dihydrodiendiol-degrading dehydrogenases in E. coli BW25113. MethodsX 2020; 7:101143. [PMID: 33299804 PMCID: PMC7704418 DOI: 10.1016/j.mex.2020.101143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Accepted: 11/07/2020] [Indexed: 11/22/2022] Open
Abstract
cis-Dihydrodiendiols are valuable compounds, finding multiple application as chiral synthons in organic chemistry. The biotechnological route for the generation of cis-dihydrodiendiols involves the dihydroxylation of aromatic compounds, catalyzed by Rieske non-heme iron dioxygenases. To date, numerous examples of recombinant E. coli, harboring such dioxygenases, can be found in the literature. Nevertheless, there is only a minor number of publications, addressing the E. coli catalyzed degradation of cis-dihydrodiendiols into catechols via dehydrogenases. Identification and elimination of such dehydrogenase catalyzed degradation is key for the establishment of enhanced recombinant E. coli platforms pursuing the production of cis-dihydrodiendiols. Here, we provide a fast and easy strategy for the identification of promiscuous alcohol dehydrogenases in E. coli BW25113, catalyzing the degradation of cis-dihydrodiendiols into catechols. This approach is based on the screening of dehydrogenase deficient KEIO strains, regarding their incapability of degrading a cis-dihydrodiendiol of choice.Novel screening strategy for E. coli BW25113 dehydrogenase knock-outs, incapable of degrading cis-dihydrodiendiols was validated for cis-1,2-dihydrocatechol as substrate Corresponding knock-outs can be used for recombinant production of cis-dihydrodiendiols Simple analysis based on liquid chromatography with diode array detector (HPLC-DAD)
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Chatzopoulou M, Claridge TDW, Davies KE, Davies SG, Elsey DJ, Emer E, Fletcher AM, Harriman S, Robinson N, Rowley JA, Russell AJ, Tinsley JM, Weaver R, Wilkinson IVL, Willis NJ, Wilson FX, Wynne GM. Isolation, Structural Identification, Synthesis, and Pharmacological Profiling of 1,2-trans-Dihydro-1,2-diol Metabolites of the Utrophin Modulator Ezutromid. J Med Chem 2019; 63:2547-2556. [DOI: 10.1021/acs.jmedchem.9b01547] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Maria Chatzopoulou
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Tim D. W. Claridge
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Kay E. Davies
- Department of Physiology, Anatomy and Genetics, MDUK Oxford Neuromuscular Centre, University of Oxford, Oxford OX1 3PT, United Kingdom
| | - Stephen G. Davies
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - David J. Elsey
- Summit Therapeutics plc, 136a Eastern Avenue, Milton Park, Abingdon OX14 4SB, United Kingdom
| | - Enrico Emer
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Ai M. Fletcher
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Shawn Harriman
- Summit Therapeutics plc, One Broadway, 14th Floor, Cambridge, Massachusetts 02142, United States
| | - Neil Robinson
- S.H.B. Enterprises Ltd., 55 Station Road, Beaconsfield HP19 1QL, United Kingdom
| | - Jessica A. Rowley
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Angela J. Russell
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford OX1 3TA, United Kingdom
- Department of Pharmacology, University of Oxford, Mansfield Road, Oxford OX1 3PQ, United Kingdom
| | - Jonathon M. Tinsley
- Summit Therapeutics plc, 136a Eastern Avenue, Milton Park, Abingdon OX14 4SB, United Kingdom
| | - Richard Weaver
- XenoGesis Ltd., BioCity Nottingham, Pennyfoot Street, Nottingham NG1 1GF, United Kingdom
| | - Isabel V. L. Wilkinson
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Nicky J. Willis
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Francis X. Wilson
- Summit Therapeutics plc, 136a Eastern Avenue, Milton Park, Abingdon OX14 4SB, United Kingdom
| | - Graham M. Wynne
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, Mansfield Road, Oxford OX1 3TA, United Kingdom
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5
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Xing S, Xia H, Guo J, Zou C, Gao T, Wang K, Zhu B, Pei M, Bai M. Diastereoselective Construction of 2-Aminoindanones via an In(OTf) 3-Catalyzed Domino Reaction. J Org Chem 2019; 84:8984-8997. [PMID: 31250644 DOI: 10.1021/acs.joc.9b00876] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An In(OTf)3-catalyzed domino reaction involving sequential oxidative ring opening of aziridines by using the solvent dimethyl sulfoxide and intramolecular Michael addition has been developed for the modular synthesis of 2-aminoindanone compounds by the formation of one new C═O bond and one new C-C bond. The notable feature of this strategy includes broad substrate scope, excellent trans-diastereoselectivities, highly functionalized products, and mild conditions. The catalyst In(OTf)3 plays an important role in the formation of the indanone ring.
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Affiliation(s)
- Siyang Xing
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education (Tianjin Normal University), College of Chemistry , Tianjin Normal University , Tianjin 300387 , People's Republic of China
| | - Hanyu Xia
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education (Tianjin Normal University), College of Chemistry , Tianjin Normal University , Tianjin 300387 , People's Republic of China
| | - Junshuo Guo
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education (Tianjin Normal University), College of Chemistry , Tianjin Normal University , Tianjin 300387 , People's Republic of China
| | - Chenchen Zou
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education (Tianjin Normal University), College of Chemistry , Tianjin Normal University , Tianjin 300387 , People's Republic of China
| | - Tingxuan Gao
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education (Tianjin Normal University), College of Chemistry , Tianjin Normal University , Tianjin 300387 , People's Republic of China
| | - Kui Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education (Tianjin Normal University), College of Chemistry , Tianjin Normal University , Tianjin 300387 , People's Republic of China
| | - Bolin Zhu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education (Tianjin Normal University), College of Chemistry , Tianjin Normal University , Tianjin 300387 , People's Republic of China
| | - Meiqi Pei
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education (Tianjin Normal University), College of Chemistry , Tianjin Normal University , Tianjin 300387 , People's Republic of China
| | - Mengpei Bai
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education (Tianjin Normal University), College of Chemistry , Tianjin Normal University , Tianjin 300387 , People's Republic of China
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6
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Saha N, Müller M, Husain SM. Asymmetric Synthesis of Natural cis-Dihydroarenediols Using Tetrahydroxynaphthalene Reductase and Its Biosynthetic Implications. Org Lett 2019; 21:2204-2208. [PMID: 30892050 DOI: 10.1021/acs.orglett.9b00500] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Asymmetric reduction of hydroxynaphthoquinones to secondary metabolites, (3 S,4 R)-3,4,8- and (2 S,4 R)-2,4,8-trihydroxy-1-tetralone, a putative biosynthetic diketo intermediate and a probable natural analogue, (3 S,4 R)-7-acetyl-3,4,8-trihydroxy-6-methyl-3,4-dihydronaphthalene-1(2 H)-one, using NADPH-dependent tetrahydroxynaphthalene reductase (T4HNR) of Magnaporthe grisea is described. This work implies the involvement of T4HNR or related enzymes during the (bio)synthesis of other dihydroarenediols by reduction of the hydroxynaphthoquinone scaffold containing substrates.
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Affiliation(s)
- Nirmal Saha
- Molecular Synthesis and Drug Discovery Unit , Centre of Biomedical Research , SGPGIMS Campus, Lucknow 226014 , India
| | - Michael Müller
- Institute for Pharmaceutical Sciences , University of Freiburg , 79104 Freiburg , Germany
| | - Syed Masood Husain
- Molecular Synthesis and Drug Discovery Unit , Centre of Biomedical Research , SGPGIMS Campus, Lucknow 226014 , India
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7
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Li DY, Wang A, Zhu XP, Feng W, Liu PN. Direct access to substituted benzo[b]carbazoles through cascade annulation of 2-vinylbenzaldehydes with indoles. Chem Commun (Camb) 2019; 55:3339-3342. [DOI: 10.1039/c8cc10253h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly efficient palladium-catalyzed cascade annulation of 2-vinylbenzaldehydes with indoles has been achieved to afford 6-(3-indolyl)benzo[b]carbazoles under mild conditions in good yield and with excellent regioselectivity.
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Affiliation(s)
- Deng-Yuan Li
- Shanghai Key Laboratory of Functional Materials Chemistry
- Key Laboratory for Advanced Materials and School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - An Wang
- Shanghai Key Laboratory of Functional Materials Chemistry
- Key Laboratory for Advanced Materials and School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Xiao-Ping Zhu
- Shanghai Key Laboratory of Functional Materials Chemistry
- Key Laboratory for Advanced Materials and School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Wei Feng
- Shanghai Key Laboratory of Functional Materials Chemistry
- Key Laboratory for Advanced Materials and School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai
- China
| | - Pei-Nian Liu
- Shanghai Key Laboratory of Functional Materials Chemistry
- Key Laboratory for Advanced Materials and School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai
- China
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8
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CHAKRABORTY P, ROY SC. Study towards diversity oriented synthesis of optically active substituted cyclopentane fused carbocyclic and oxacyclic medium-sized rings: Competition between Grubbs-II catalyzed ring closing olefin metathesis and ring closing carbonyl-olefin metathesis. J CHEM SCI 2016. [DOI: 10.1007/s12039-016-1197-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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9
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Twigg DG, Kondo N, Mitchell SL, Galloway WRJD, Sore HF, Madin A, Spring DR. Partially Saturated Bicyclic Heteroaromatics as an sp(3) -Enriched Fragment Collection. Angew Chem Int Ed Engl 2016; 55:12479-83. [PMID: 27596095 PMCID: PMC5091628 DOI: 10.1002/anie.201606496] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 08/01/2016] [Indexed: 12/12/2022]
Abstract
Fragment‐based lead generation has proven to be an effective means of identifying high‐quality lead compounds for drug discovery programs. However, the fragment screening sets often used are principally comprised of sp2‐rich aromatic compounds, which limits the structural (and hence biological) diversity of the library. Herein, we describe strategies for the synthesis of a series of partially saturated bicyclic heteroaromatic scaffolds with enhanced sp3 character. Subsequent derivatization led to a fragment collection featuring regio‐ and stereo‐controlled introduction of substituents on the saturated ring system, often with formation of new stereocenters.
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Affiliation(s)
- David G Twigg
- Department of Chemistry, University of Cambridge, Lensfield Rd, Cambridge, CB2 1EW, UK
| | - Noriyasu Kondo
- Department of Chemistry, University of Cambridge, Lensfield Rd, Cambridge, CB2 1EW, UK.,Shionogi & Co. Ltd., 1-1, Futaba-cho 3-chome, Toyonaka, Osaka, 561-0825, Japan
| | - Sophie L Mitchell
- Department of Chemistry, University of Cambridge, Lensfield Rd, Cambridge, CB2 1EW, UK
| | - Warren R J D Galloway
- Department of Chemistry, University of Cambridge, Lensfield Rd, Cambridge, CB2 1EW, UK
| | - Hannah F Sore
- Department of Chemistry, University of Cambridge, Lensfield Rd, Cambridge, CB2 1EW, UK
| | - Andrew Madin
- AstraZeneca UK Ltd., 310 Cambridge Science Park, Milton Rd, Cambridge, CB4 0FZ, UK
| | - David R Spring
- Department of Chemistry, University of Cambridge, Lensfield Rd, Cambridge, CB2 1EW, UK.
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10
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Twigg DG, Kondo N, Mitchell SL, Galloway WRJD, Sore HF, Madin A, Spring DR. Partially Saturated Bicyclic Heteroaromatics as an sp3
-Enriched Fragment Collection. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201606496] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- David G. Twigg
- Department of Chemistry; University of Cambridge; Lensfield Rd Cambridge CB2 1EW UK
| | - Noriyasu Kondo
- Department of Chemistry; University of Cambridge; Lensfield Rd Cambridge CB2 1EW UK
- Shionogi & Co. Ltd.; 1-1, Futaba-cho 3-chome, Toyonaka Osaka 561-0825 Japan
| | - Sophie L. Mitchell
- Department of Chemistry; University of Cambridge; Lensfield Rd Cambridge CB2 1EW UK
| | | | - Hannah F. Sore
- Department of Chemistry; University of Cambridge; Lensfield Rd Cambridge CB2 1EW UK
| | - Andrew Madin
- AstraZeneca UK Ltd.; 310 Cambridge Science Park, Milton Rd Cambridge CB4 0FZ UK
| | - David R. Spring
- Department of Chemistry; University of Cambridge; Lensfield Rd Cambridge CB2 1EW UK
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11
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Fedoseev SV, Ershov OV, Lipin KV, Belikov MY. The rare transformation of 2,7-diazaspiro[4.4]nonanes in furo[3,4-c]pyridines. RSC Adv 2016. [DOI: 10.1039/c5ra27585g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Transformation of 3-amino-8-hydroxy-1,6-dioxo-2,7-diazaspiro[4.4]non-3-en-4-carbonitriles to the obtaining of two classes fused heterocycles: 4-halogen-3-hydroxy-1,3-dihydrofuro[3,4-c]pyridin-1-ones and octahydropyrrolo[3,4-c]pyrrole-1,3,4,6-tetraones.
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12
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Conradt D, Schätzle MA, Husain SM, Müller M. Diversity in Reduction with Short-Chain Dehydrogenases: Tetrahydroxynaphthalene Reductase, Trihydroxynaphthalene Reductase, and Glucose Dehydrogenase. ChemCatChem 2015. [DOI: 10.1002/cctc.201500605] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- David Conradt
- Institut für Pharmazeutische Wissenschaften; Albert-Ludwigs-Universität Freiburg; Albertstrasse 25 79104 Freiburg Germany
| | - Michael A. Schätzle
- Institut für Pharmazeutische Wissenschaften; Albert-Ludwigs-Universität Freiburg; Albertstrasse 25 79104 Freiburg Germany
- Roche Pharma AG; Emil-Barell-Str. 1 79639 Grenzach-Wyhlen (Germany
| | - Syed Masood Husain
- Institut für Pharmazeutische Wissenschaften; Albert-Ludwigs-Universität Freiburg; Albertstrasse 25 79104 Freiburg Germany
- Centre of Biomedical Research; Raebareli Road, Lucknow 226 014 Uttar Pradesh India
| | - Michael Müller
- Institut für Pharmazeutische Wissenschaften; Albert-Ludwigs-Universität Freiburg; Albertstrasse 25 79104 Freiburg Germany
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Li S, Xu J, Fan B, Lu Z, Zeng C, Bian Z, Zhou Y, Wang J. Palladium/Zinc Co-Catalyzedsyn-Stereoselectively Asymmetric Ring-Opening Reaction of Oxabenzonorbornadienes with Phenols. Chemistry 2015; 21:9003-7. [PMID: 25907319 DOI: 10.1002/chem.201500816] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 02/27/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Sifeng Li
- Department of Chemistry, South University of Science and Technology of China, Shenzhen, Guangdong, 518055 (P. R. China)
| | - Jianbin Xu
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine, Yunnan Minzu University, Kunming 650500 (P. R. China)
| | - Baomin Fan
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine, Yunnan Minzu University, Kunming 650500 (P. R. China).
- State Key Laboratory of Elemento-organic Chemistry, Nankai University, Tinajim, 300071 (P. R. China).
| | - Zhiwu Lu
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine, Yunnan Minzu University, Kunming 650500 (P. R. China)
| | - Chaoyuan Zeng
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine, Yunnan Minzu University, Kunming 650500 (P. R. China)
| | - Zhaoxiang Bian
- School of Chinese Medicine, Hong Kong Baptist University
| | - Yongyun Zhou
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine, Yunnan Minzu University, Kunming 650500 (P. R. China)
| | - Jun Wang
- Department of Chemistry, South University of Science and Technology of China, Shenzhen, Guangdong, 518055 (P. R. China).
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Yamamoto E, Takenouchi Y, Ozaki T, Miya T, Ito H. Copper(I)-Catalyzed Enantioselective Synthesis of α-Chiral Linear or Carbocyclic (E)-(γ-Alkoxyallyl)boronates. J Am Chem Soc 2014; 136:16515-21. [DOI: 10.1021/ja506284w] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Eiji Yamamoto
- Division of Chemical Process Engineering & Frontier Chemistry Center, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Yuta Takenouchi
- Division of Chemical Process Engineering & Frontier Chemistry Center, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Taichi Ozaki
- Division of Chemical Process Engineering & Frontier Chemistry Center, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Takanori Miya
- Division of Chemical Process Engineering & Frontier Chemistry Center, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Hajime Ito
- Division of Chemical Process Engineering & Frontier Chemistry Center, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan
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15
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Saicic RN. Protecting group-free syntheses of natural products and biologically active compounds. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.06.025] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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16
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Morandi B, Wickens ZK, Grubbs RH. Regioselective Wacker Oxidation of Internal Alkenes: Rapid Access to Functionalized Ketones Facilitated by Cross-Metathesis. Angew Chem Int Ed Engl 2013; 52:9751-4. [DOI: 10.1002/anie.201303587] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2013] [Revised: 06/09/2013] [Indexed: 11/06/2022]
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17
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Morandi B, Wickens ZK, Grubbs RH. Regioselective Wacker Oxidation of Internal Alkenes: Rapid Access to Functionalized Ketones Facilitated by Cross-Metathesis. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201303587] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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18
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Liou JR, El-Shazly M, Du YC, Tseng CN, Hwang TL, Chuang YL, Hsu YM, Hsieh PW, Wu CC, Chen SL, Hou MF, Chang FR, Wu YC. 1,5-Diphenylpent-3-en-1-ynes and methyl naphthalene carboxylates from Lawsonia inermis and their anti-inflammatory activity. PHYTOCHEMISTRY 2013; 88:67-73. [PMID: 23351982 DOI: 10.1016/j.phytochem.2012.11.010] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2012] [Revised: 09/12/2012] [Accepted: 11/15/2012] [Indexed: 06/01/2023]
Abstract
Lawsonia inermis (Lythraceae) known as henna is one of the most popular and ancient plants used in cosmetics and hair dying. It is cultivated for its leaves but other parts such as seeds, flowers, stem bark and roots are also used in traditional medicine for millennia. Henna tattoo paste also proved to be beneficial for wound healing and in several skin diseases suggesting potent anti-inflammatory activity. To evaluate henna anti-inflammatory activity, 31 compounds, including three 1,5-diphenylpent-3-en-1-yne derivatives, lawsochylin A-C and three methyl naphthalene carboxylates, lawsonaphthoate A-C, were isolated from the stems and leaves of henna utilizing a bioassay-guided fractionation. The structures of the compounds were elucidated by spectroscopic data. Two compounds, lawsochylin A and lawsonaphthoate A showed potent anti-inflammatory activity by inhibition of superoxide anion generation (IC(50)=1.80 and 1.90 μg/ml) and elastase release (IC(50)=1.58 and 3.17 μg/ml) of human neutrophils in response to fMLP or cytochalasin B. Moreover, the known compounds, luteolin, apigenin, 4S-4-hydroxy-α-tetralone, and 2-butoxysuccinic acid, also showed potent inhibition of superoxide anion generation (IC(50)=0.75-1.78 μg/ml) and elastase release (IC(50)=1.62-3.61 μg/ml).
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Affiliation(s)
- Jing-Ru Liou
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
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Morandi B, Wickens ZK, Grubbs RH. Practical and general palladium-catalyzed synthesis of ketones from internal olefins. Angew Chem Int Ed Engl 2013; 52:2944-8. [PMID: 23325587 DOI: 10.1002/anie.201209541] [Citation(s) in RCA: 82] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Indexed: 11/09/2022]
Affiliation(s)
- Bill Morandi
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, USA
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Morandi B, Wickens ZK, Grubbs RH. Practical and General Palladium-Catalyzed Synthesis of Ketones from Internal Olefins. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201209541] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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21
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Herndon JW. The chemistry of the carbon–transition metal double and triple bond: Annual survey covering the year 2010. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2012.02.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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22
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Husain SM, Schätzle MA, Röhr C, Lüdeke S, Müller M. Biomimetic Asymmetric Synthesis of (R)-GTRI-02 and (3S,4R)-3,4-Dihydroxy-3,4-dihydronaphthalen-1(2H)-ones. Org Lett 2012; 14:3600-3. [DOI: 10.1021/ol301305p] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Syed Masood Husain
- Institute of Pharmaceutical Sciences, Albert-Ludwigs-University of Freiburg, Albertstrasse 25, 79104 Freiburg, Germany, and Institute for Inorganic and Analytical Chemistry, Albert-Ludwigs-University of Freiburg, Albertstrasse 21, 79104 Freiburg, Germany
| | - Michael A. Schätzle
- Institute of Pharmaceutical Sciences, Albert-Ludwigs-University of Freiburg, Albertstrasse 25, 79104 Freiburg, Germany, and Institute for Inorganic and Analytical Chemistry, Albert-Ludwigs-University of Freiburg, Albertstrasse 21, 79104 Freiburg, Germany
| | - Caroline Röhr
- Institute of Pharmaceutical Sciences, Albert-Ludwigs-University of Freiburg, Albertstrasse 25, 79104 Freiburg, Germany, and Institute for Inorganic and Analytical Chemistry, Albert-Ludwigs-University of Freiburg, Albertstrasse 21, 79104 Freiburg, Germany
| | - Steffen Lüdeke
- Institute of Pharmaceutical Sciences, Albert-Ludwigs-University of Freiburg, Albertstrasse 25, 79104 Freiburg, Germany, and Institute for Inorganic and Analytical Chemistry, Albert-Ludwigs-University of Freiburg, Albertstrasse 21, 79104 Freiburg, Germany
| | - Michael Müller
- Institute of Pharmaceutical Sciences, Albert-Ludwigs-University of Freiburg, Albertstrasse 25, 79104 Freiburg, Germany, and Institute for Inorganic and Analytical Chemistry, Albert-Ludwigs-University of Freiburg, Albertstrasse 21, 79104 Freiburg, Germany
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Mukherjee P, Sarkar TK. Heteroatom-directed Wacker oxidations. A protection-free synthesis of (−)-heliophenanthrone. Org Biomol Chem 2012; 10:3060-5. [DOI: 10.1039/c2ob07095b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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24
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Wang Y, Jimenez M, Hansen AS, Raiber EA, Schreiber SL, Young DW. Control of olefin geometry in macrocyclic ring-closing metathesis using a removable silyl group. J Am Chem Soc 2011; 133:9196-9. [PMID: 21557625 DOI: 10.1021/ja202012s] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Introducing a silyl group at one of the internal olefin positions in diolefinic substrates results in E-selective olefin formation in macrocyclic ring-forming metathesis. The application of this method to a range of macrocyclic (E)-alkenylsiloxanes is described. Protodesilylation of alkenylsiloxane products yields novel Z-configured macrocycles.
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Affiliation(s)
- Yikai Wang
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, USA
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Sequential Transformations to Access Polycyclic Chemotypes: Asymmetric Crotylation and Metal Carbenoid Reactions. Angew Chem Int Ed Engl 2011; 50:5938-42. [DOI: 10.1002/anie.201101366] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2011] [Indexed: 01/07/2023]
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26
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Wu J, Becerril J, Lian Y, Davies HML, Porco JA, Panek JS. Sequential Transformations to Access Polycyclic Chemotypes: Asymmetric Crotylation and Metal Carbenoid Reactions. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201101366] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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