1
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Bosch E, Speetzen E, Bowling NP. Halogen-Bonded Supramolecular Parallelograms: From Self-Complementary Iodoalkyne Halogen-Bonded Dimers to 1:1 and 2:2 Iodoalkyne Halogen-Bonded Cocrystals. CRYSTAL GROWTH & DESIGN 2024; 24:1674-1681. [PMID: 38405167 PMCID: PMC10885002 DOI: 10.1021/acs.cgd.3c01325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 01/29/2024] [Accepted: 01/30/2024] [Indexed: 02/27/2024]
Abstract
The formation of supramolecular parallelograms utilizing iodoalkyne-pyridine halogen bonding is described. The crystal structures of four iodoalkynyl-substituted (phenylethynyl)pyridines demonstrate the feasibility of discrete self-complementary dimer formation. These compounds 3-(2-iodoethynyl-phenylethynyl) pyridine (1), 2-(3-iodoethynyl-phenylethynyl) pyridine (2), 3-(4,5-difluoro-2-iodoethynyl-phenylethynyl) pyridine (3), and 2-(5-iodoethynyl-2,4-dimethylphenylethynyl) pyridine (4) all form parallelogram-shaped dimers with two self-complementary short N-I halogen bonds. The potential formation of iodoalkynyl halogen-bonded supramolecular macrocycles is demonstrated by the formation of a discrete halogen-bonded parallelogram-shaped complex in the 1:1 cocrystal formed from the bis iodoalkyne, 1-iodoethynyl-2-(3-iodoethynyl-phenylethynyl)-4,5-dimethoxybenzene (6), and the dipyridyl, 5-phenyl-2-(pyridin-3-ylethynyl)pyridine (7). Furthermore, discrete supramolecular parallelograms form within the 2:2 cocrystal formed between 1,2-bis(iodoethynyl)-4,5-difluorobenzene and the dipyridyl 4-(3-pyridylethynyl) pyridine (8).
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Affiliation(s)
- Eric Bosch
- Department of Chemistry and Biochemistry, Missouri State University, 901 South National Avenue, Springfield, Missouri 65897, United States
| | - Erin Speetzen
- Department of Chemistry, University of Wisconsin-Stevens Point, 2101 Fourth Avenue, Stevens Point, Wisconsin 54481, United States
| | - Nathan P Bowling
- Department of Chemistry, University of Wisconsin-Stevens Point, 2101 Fourth Avenue, Stevens Point, Wisconsin 54481, United States
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2
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Mancuso R, Lettieri M, Strangis R, Russo P, Palumbo Piccionello A, De Angelis S, Gabriele B. Iodocyclization of 2‐Methylthiophenylacetylenes to 3‐Iodobenzothiophenes and their coupling Reactions under More Sustainable Conditions. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Raffaella Mancuso
- University of Calabria: Universita della Calabria Chemistry and Chemical Technologies Rende (CS) ITALY
| | - Melania Lettieri
- Università della Calabria: Universita della Calabria Chemistry and Chemical Technologies Rende (CS) ITALY
| | - Romina Strangis
- University of Calabria: Universita della Calabria Chemistry and Chemical Technologies Rende (CS) ITALY
| | - Patrizio Russo
- University of Calabria: Universita della Calabria Chemistry and Chemical Technologies Rende (CS) ITALY
| | - Antonio Palumbo Piccionello
- University of Palermo: Universita degli Studi di Palermo Biological, Chemical and Pharmaceutical Science and Technology-STEBICEF Palermo ITALY
| | - Sara De Angelis
- University of Calabria: Universita della Calabria Chemistry and Chemical Technologies ITALY
| | - Bartolo Gabriele
- University of Calabria: Universita della Calabria Department of Chemistry and Chemical Technologies Via Pietro Bucci, 12/C 87036 Arcavacata di Rende ITALY
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3
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Kaskevich KI, Babushkina AA, Gurzhiy VV, Egorov DM, Svintsitskaya NI, Dogadina AV. Synthesis of 3(2)-phosphonylated thiazolo[3,2- a]oxopyrimidines. Beilstein J Org Chem 2020; 16:1947-1954. [PMID: 32831951 PMCID: PMC7431766 DOI: 10.3762/bjoc.16.161] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 07/30/2020] [Indexed: 12/28/2022] Open
Abstract
A series of 3(2)-phosphonylated thiazolo[3,2-a]oxopyrimidines was synthesized for the first time by the reactions of chloroethynylphosphonates with unsubstituted and 5(6)-substituted 2-thiouracils. The reaction of chloroethynylphosphonates with 6-substituted 2-thiouracils bearing electron-donor groups (CH3, Ph) proceeded with high regioselectivity involving the cyclization through the N3-nitrogen atom to form new 3-phosphonylated thiazolo[3,2-a]-5-oxopyrimidines with good yield. In the case of unsubstituted and 5-methyl-2-thiouracils, cyclization occurred predominantly through the N1 atom and partially via the N3-nitrogen atom to form a mixture of the corresponding thiazolo[3,2-a]-7- and 5-oxopyrimidines. A dramatic change in the reaction regioselectivity was observed in the case of 6-trifluoromethyl-2-thiouracil that afforded 2- and 3-phosphonylated 5-oxothiazolopyrimidines in a 1:1 ratio.
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Affiliation(s)
- Ksenia I Kaskevich
- Department of Organic Chemistry, St. Petersburg State Institute of Technology, Moskovskii pr. 26, St. Petersburg, 190013, Russia
| | - Anastasia A Babushkina
- Department of Organic Chemistry, St. Petersburg State Institute of Technology, Moskovskii pr. 26, St. Petersburg, 190013, Russia
| | - Vladislav V Gurzhiy
- Department of Crystallography, Institute of Earth Sciences, St. Petersburg State University, Universitetskaya emb. 7/9, St. Petersburg, 199034 Russia
| | - Dmitrij M Egorov
- Department of Organic Chemistry, St. Petersburg State Institute of Technology, Moskovskii pr. 26, St. Petersburg, 190013, Russia
| | - Nataly I Svintsitskaya
- Department of Organic Chemistry, St. Petersburg State Institute of Technology, Moskovskii pr. 26, St. Petersburg, 190013, Russia
| | - Albina V Dogadina
- Department of Organic Chemistry, St. Petersburg State Institute of Technology, Moskovskii pr. 26, St. Petersburg, 190013, Russia
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4
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Shoji T, Miura K, Ohta A, Sekiguchi R, Ito S, Endo Y, Nagahata T, Mori S, Okujima T. Synthesis of azuleno[2,1-b]thiophenes by cycloaddition of azulenylalkynes with elemental sulfur and their structural, optical and electrochemical properties. Org Chem Front 2019. [DOI: 10.1039/c9qo00593e] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of several azulenylalkynes having an aryl substituent with elemental sulfur afforded the corresponding azuleno[2,1-b]thiophenes in good yields.
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Affiliation(s)
- Taku Shoji
- Graduate School of Science and Technology
- Shinshu University
- Matsumoto
- Japan
| | - Kota Miura
- Graduate School of Science and Technology
- Shinshu University
- Matsumoto
- Japan
| | - Akira Ohta
- Graduate School of Science and Technology
- Shinshu University
- Matsumoto
- Japan
| | - Ryuta Sekiguchi
- Graduate School of Science and Technology
- Shinshu University
- Matsumoto
- Japan
| | - Shunji Ito
- Graduate School of Science and Technology
- Hirosaki University
- Hirosaki 036-8561
- Japan
| | - Yuya Endo
- Graduate School of Science and Technology
- Hirosaki University
- Hirosaki 036-8561
- Japan
| | - Tatsuki Nagahata
- Graduate School of Science and Technology
- Hirosaki University
- Hirosaki 036-8561
- Japan
| | - Shigeki Mori
- Advanced Research Support Center
- Ehime University
- Matsuyama 790-8577
- Japan
| | - Tetsuo Okujima
- Department of Chemistry and Biology
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
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5
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Peng C, Kusakabe T, Kikkawa S, Mochida T, Azumaya I, Dhage YD, Takahashi K, Sasai H, Kato K. Asymmetric Cyclizative Dimerization of (
ortho
‐Alkynyl Phenyl) (Methoxymethyl) Sulfides with Palladium(II) Bisoxazoline Catalyst. Chemistry 2018; 25:733-737. [DOI: 10.1002/chem.201804779] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Indexed: 01/08/2023]
Affiliation(s)
- Cheng Peng
- Faculty of Pharmaceutical SciencesToho University 2-2-1 Miyama, Funabashi Chiba 274-8510 Japan
| | - Taichi Kusakabe
- Faculty of Pharmaceutical SciencesToho University 2-2-1 Miyama, Funabashi Chiba 274-8510 Japan
| | - Shoko Kikkawa
- Faculty of Pharmaceutical SciencesToho University 2-2-1 Miyama, Funabashi Chiba 274-8510 Japan
| | - Tomoyuki Mochida
- Department of ChemistryFaculty of SciencesKobe University Rokkodai, Nada Kobe 657-8501 Japan
| | - Isao Azumaya
- Faculty of Pharmaceutical SciencesToho University 2-2-1 Miyama, Funabashi Chiba 274-8510 Japan
| | - Yogesh Daulat Dhage
- Faculty of Pharmaceutical SciencesToho University 2-2-1 Miyama, Funabashi Chiba 274-8510 Japan
| | - Keisuke Takahashi
- Faculty of Pharmaceutical SciencesToho University 2-2-1 Miyama, Funabashi Chiba 274-8510 Japan
| | - Hiroaki Sasai
- The Institute of Scientific and Industrial Research (ISIR)Osaka University Mihogaoka Ibaraki-shi, Osaka 567-0047 Japan
| | - Keisuke Kato
- Faculty of Pharmaceutical SciencesToho University 2-2-1 Miyama, Funabashi Chiba 274-8510 Japan
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6
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Okitsu T, Nakahigashi H, Sugihara R, Fukuda I, Tsuji S, In Y, Wada A. Silyl Group-Directed 6-exo-dig Iodocyclization of Homopropargylic Carbamates and Amides. Chemistry 2018; 24:18638-18642. [PMID: 30311697 DOI: 10.1002/chem.201804794] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Indexed: 12/21/2022]
Abstract
Iodocyclization of silyl group-substituted homopropargylic carbamates and amides proceeded via 6-exo-dig mode to afford 6-vinylene-4,5-dihydro-1,3-oxazines in moderate to quantitative yields. This is the first report for silyl group-solely directed iodocyclization of alkynes utilizing the β-silyl effect. Under these mild reaction conditions, various functionalities such as secondary alcohol, acetal, urea, and sulfide were tolerated.
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Affiliation(s)
- Takashi Okitsu
- Laboratory of Organic Chemistry for Life Science, Kobe Pharmaceutical University, 4-19-1 Motoyamakita-machi, Higashinada-ku, Kobe, 658-8558, Japan
| | - Hikaru Nakahigashi
- Laboratory of Organic Chemistry for Life Science, Kobe Pharmaceutical University, 4-19-1 Motoyamakita-machi, Higashinada-ku, Kobe, 658-8558, Japan
| | - Ryosuke Sugihara
- Laboratory of Organic Chemistry for Life Science, Kobe Pharmaceutical University, 4-19-1 Motoyamakita-machi, Higashinada-ku, Kobe, 658-8558, Japan
| | - Ikki Fukuda
- Laboratory of Organic Chemistry for Life Science, Kobe Pharmaceutical University, 4-19-1 Motoyamakita-machi, Higashinada-ku, Kobe, 658-8558, Japan
| | - Saki Tsuji
- Laboratory of Organic Chemistry for Life Science, Kobe Pharmaceutical University, 4-19-1 Motoyamakita-machi, Higashinada-ku, Kobe, 658-8558, Japan
| | - Yasuko In
- Department of Physical Chemistry, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka, 569-1094, Japan
| | - Akimori Wada
- Laboratory of Organic Chemistry for Life Science, Kobe Pharmaceutical University, 4-19-1 Motoyamakita-machi, Higashinada-ku, Kobe, 658-8558, Japan
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7
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Di J, He H, Wang F, Xue F, Liu XY, Qin Y. Regiospecific alkyl addition of (hetero)arene-fused thiophenes enabled by a visible-light-mediated photocatalytic desulfuration approach. Chem Commun (Camb) 2018; 54:4692-4695. [PMID: 29676430 DOI: 10.1039/c8cc02052c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A unique photoredox desulfuration approach enabling the regiospecific alkyl addition of (hetero)arene-fused thiophenes is presented.
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Affiliation(s)
- Jiamei Di
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education
- and Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
| | - Huan He
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education
- and Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
| | - Falu Wang
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education
- and Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
| | - Fei Xue
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education
- and Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
| | - Xiao-Yu Liu
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education
- and Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
| | - Yong Qin
- Key Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry of Education
- and Sichuan Research Center of Precision Engineering Technology for Small Molecule Drugs
- West China School of Pharmacy
- Sichuan University
- Chengdu 610041
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8
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Zhao G, Alami M, Provot O. Synthesis and functionalization of 3-bromo-2-(2-chlorovinyl)benzothiophenes as molecular tools. RSC Adv 2017. [DOI: 10.1039/c7ra07340b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
An efficient bromocyclization process ofortho-substituted arylmethyl sulfide promoted byN-methyl-pyrrolidin-2-one hydrotribromide led to the synthesis of 3-bromo-2-(2-(di)chlorovinyl)benzothiophene as a polyhalogenated platform.
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Affiliation(s)
- Guangkuan Zhao
- BioCIS
- Equipe Labellisée Ligue Contre le Cancer
- Univ Paris-Sud
- CNRS
- University Paris Saclay
| | - Mouad Alami
- BioCIS
- Equipe Labellisée Ligue Contre le Cancer
- Univ Paris-Sud
- CNRS
- University Paris Saclay
| | - Olivier Provot
- BioCIS
- Equipe Labellisée Ligue Contre le Cancer
- Univ Paris-Sud
- CNRS
- University Paris Saclay
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9
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Shen R, Kusakabe T, Yatsu T, Kanno Y, Takahashi K, Nemoto K, Kato K. Palladium(II) Catalyzed Cyclization-Carbonylation-Cyclization Coupling Reaction of (ortho-Alkynyl Phenyl) (Methoxymethyl) Sulfides Using Molecular Oxygen as the Terminal Oxidant. Molecules 2016; 21:E1177. [PMID: 27607997 PMCID: PMC6273608 DOI: 10.3390/molecules21091177] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Revised: 08/23/2016] [Accepted: 08/30/2016] [Indexed: 11/17/2022] Open
Abstract
An efficient Pd(II)/Pd⁰-p-benzoquinone/hydroquinone-CuCl₂/CuCl catalyst system was developed that uses environmentally friendly molecular oxygen as the terminal oxidant to catalyze the cyclization-carbonylation-cyclization coupling reaction (CCC-coupling reaction) of (o-alkynyl phenyl) (methoxymethyl) sulfides.
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Affiliation(s)
- Rong Shen
- Faculty of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan.
| | - Taichi Kusakabe
- Faculty of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan.
| | - Tomofumi Yatsu
- Faculty of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan.
| | - Yuichiro Kanno
- Faculty of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan.
| | - Keisuke Takahashi
- Faculty of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan.
| | - Kiyomitsu Nemoto
- Faculty of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan.
| | - Keisuke Kato
- Faculty of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan.
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10
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Ikeda A, Omote M, Kusumoto K, Komori M, Tarui A, Sato K, Ando A. A dramatic enhancing effect of InBr3 towards the oxidative Sonogashira cross-coupling reaction of 2-ethynylanilines. Org Biomol Chem 2016; 14:2127-33. [PMID: 26782816 DOI: 10.1039/c5ob02558c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The addition of InBr3 to the oxidative Sonogashira cross-coupling reaction of 2-ethynylaniline with (E)-trimethyl(3,3,3-trifluoroprop-1-enyl)silane led to a dramatic increase in the reactivity to afford the corresponding 1,3-enynes bearing a trifluoromethyl group on their terminal sp(2) carbon. The subsequent cyclization of these 1,3-enynes under palladium catalysis provides access to the corresponding indoles bearing a 3,3,3-trifluoroprop-1-enyl group at their 2-position.
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Affiliation(s)
- A Ikeda
- Faculty of Pharmaceutical Sciences, Setsunan University, 45-1 Nagaotoge-cho, Hirakata, Osaka 573-0101, Japan.
| | - M Omote
- Faculty of Pharmaceutical Sciences, Setsunan University, 45-1 Nagaotoge-cho, Hirakata, Osaka 573-0101, Japan.
| | - K Kusumoto
- Faculty of Pharmaceutical Sciences, Setsunan University, 45-1 Nagaotoge-cho, Hirakata, Osaka 573-0101, Japan.
| | - M Komori
- Faculty of Pharmaceutical Sciences, Setsunan University, 45-1 Nagaotoge-cho, Hirakata, Osaka 573-0101, Japan.
| | - A Tarui
- Faculty of Pharmaceutical Sciences, Setsunan University, 45-1 Nagaotoge-cho, Hirakata, Osaka 573-0101, Japan.
| | - K Sato
- Faculty of Pharmaceutical Sciences, Setsunan University, 45-1 Nagaotoge-cho, Hirakata, Osaka 573-0101, Japan.
| | - A Ando
- Faculty of Pharmaceutical Sciences, Setsunan University, 45-1 Nagaotoge-cho, Hirakata, Osaka 573-0101, Japan.
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11
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Zang H, Sun JG, Dong X, Li P, Zhang B. Preparation of Benzothiophenes and Benzoselenophenes from Arylamines and Alkynes via
Radical Cascade Reactions. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201501102] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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12
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Wan D, Yang Y, Liu X, Li M, Zhao S, You J. Radical Cyclization of Arenesulfonyl Chlorides and Alkynes: A Rapid Access to π-Conjugated Benzothiophenes. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501439] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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13
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Kaur N. Palladium-Catalyzed Approach to the Synthesis ofS-heterocycles. CATALYSIS REVIEWS-SCIENCE AND ENGINEERING 2015. [DOI: 10.1080/01614940.2015.1082824] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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14
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Ming W, Liu X, Wang L, Liu J, Wang M. Tandem Thien- and Benzannulations of α-Alkenoyl-α-alkynyl Ketene Dithioacetals with Cyanoacetates: Synthesis of Functionalized Benzo[b]thiophenes. Org Lett 2015; 17:1746-9. [DOI: 10.1021/acs.orglett.5b00523] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wenbo Ming
- Department of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
| | - Xiaocui Liu
- Department of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
| | - Lianjie Wang
- Department of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
| | - Jun Liu
- Department of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
| | - Mang Wang
- Department of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
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15
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Wang YX, Zheng WR. A comparison of the C‒H bond dissociation enthalpies of sulfur-containing fused heterocyclic compounds to the C‒H bond dissociation enthalpies in other heterocycles. J Sulphur Chem 2015. [DOI: 10.1080/17415993.2014.996222] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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16
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Monleón A, Blay G, Domingo LR, Muñoz MC, Pedro JR. Efficient Synthesis of 5-Chalcogenyl-1,3-oxazin-2-ones by Chalcogen-Mediated Yne-Carbamate Cyclisation: An Experimental and Theoretical Study. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403169] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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17
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Kesharwani T, Craig J, Del Rosario C, Shavnore R, Kornman C. Synthesis of 3-iodobenzo[b]thiophenes via iodocyclization/etherification reaction sequence. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.10.064] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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18
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Wang C, Sun LL, Hu BL, Zhang XG, Chen F. A facile one-pot synthesis of benzothiophenes via copper-catalyzed thiolation annulations of o-halostyrenes with NaSH. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.08.049] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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19
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Hou C, He Q, Yang C. Direct Synthesis of Diverse 2-Aminobenzo[b]thiophenes via Palladium-Catalyzed Carbon–Sulfur Bond Formation Using Na2S2O3 as the Sulfur Source. Org Lett 2014; 16:5040-3. [DOI: 10.1021/ol502381e] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Chuanwei Hou
- State Key Laboratory of Drug
Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
| | - Qian He
- State Key Laboratory of Drug
Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
| | - Chunhao Yang
- State Key Laboratory of Drug
Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
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20
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Kolli SK, Nakhi A, Medishetti R, Yellanki S, Kulkarni P, Ramesh Raju R, Pal M. NaSH in the construction of thiophene ring fused with N-heterocycles: a rapid and inexpensive synthesis of novel small molecules as potential inducers of apoptosis. Bioorg Med Chem Lett 2014; 24:4460-4465. [PMID: 25168747 DOI: 10.1016/j.bmcl.2014.07.096] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2014] [Revised: 07/29/2014] [Accepted: 07/31/2014] [Indexed: 11/25/2022]
Abstract
A facile construction of a thiophene ring fused with N-heterocycles has been achieved via the reaction of NaSH with 2-chloro-3-alkynyl quinoxalines/pyrazines leading to novel 2-substituted thieno[2,3-b]pyrazine/quinoxaline derivatives as potential inducers of apoptosis. Some of them showed encouraging pharmacological properties when tested in zebrafish.
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Affiliation(s)
- Sunder Kumar Kolli
- Department of Chemistry, Acharya Nagarjuna University, Nagarjuna Nagar, Guntur 522510, A.P., India
| | - Ali Nakhi
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad 500 046, India
| | - Raghavender Medishetti
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad 500 046, India; Zephase Therapeutics (an incubated company at the DRILS), University of Hyderabad Campus, Gachibowli, Hyderabad 500046, India
| | - Swapna Yellanki
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad 500 046, India; Zephase Therapeutics (an incubated company at the DRILS), University of Hyderabad Campus, Gachibowli, Hyderabad 500046, India
| | - Pushkar Kulkarni
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad 500 046, India; Zephase Therapeutics (an incubated company at the DRILS), University of Hyderabad Campus, Gachibowli, Hyderabad 500046, India
| | - R Ramesh Raju
- Department of Chemistry, Acharya Nagarjuna University, Nagarjuna Nagar, Guntur 522510, A.P., India
| | - Manojit Pal
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad 500 046, India.
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21
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Okitsu T, Nakata K, Nishigaki K, Michioka N, Karatani M, Wada A. Iodocyclization of Ethoxyethyl Ethers to Ynamides: An Immediate Construction to Benzo[b]furans. J Org Chem 2014; 79:5914-20. [DOI: 10.1021/jo500903y] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Takashi Okitsu
- Department of Organic Chemistry
for Life Science, Kobe Pharmaceutical University, 4-19-1, Motoyamakita-machi, Higashinada-ku, Kobe 658-8558, Japan
| | - Kohei Nakata
- Department of Organic Chemistry
for Life Science, Kobe Pharmaceutical University, 4-19-1, Motoyamakita-machi, Higashinada-ku, Kobe 658-8558, Japan
| | - Kenji Nishigaki
- Department of Organic Chemistry
for Life Science, Kobe Pharmaceutical University, 4-19-1, Motoyamakita-machi, Higashinada-ku, Kobe 658-8558, Japan
| | - Naoyuki Michioka
- Department of Organic Chemistry
for Life Science, Kobe Pharmaceutical University, 4-19-1, Motoyamakita-machi, Higashinada-ku, Kobe 658-8558, Japan
| | - Mitsuaki Karatani
- Department of Organic Chemistry
for Life Science, Kobe Pharmaceutical University, 4-19-1, Motoyamakita-machi, Higashinada-ku, Kobe 658-8558, Japan
| | - Akimori Wada
- Department of Organic Chemistry
for Life Science, Kobe Pharmaceutical University, 4-19-1, Motoyamakita-machi, Higashinada-ku, Kobe 658-8558, Japan
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22
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Behrends M, Wallinder C, Wieckowska A, Guimond MO, Hallberg A, Gallo-Payet N, Larhed M. N-Aryl Isoleucine Derivatives as Angiotensin II AT2 Receptor Ligands. ChemistryOpen 2014; 3:65-75. [PMID: 24808993 PMCID: PMC4000169 DOI: 10.1002/open.201300040] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2013] [Indexed: 01/25/2023] Open
Abstract
A novel series of ligands for the recombinant human AT2 receptor has been synthesized utilizing a fast and efficient palladium-catalyzed procedure for aminocarbonylation as the key reaction. Molybdenum hexacarbonyl [Mo(CO)6] was employed as the carbon monoxide source, and controlled microwave heating was applied. The prepared N-aryl isoleucine derivatives, encompassing a variety of amide groups attached to the aromatic system, exhibit binding affinities at best with K i values in the low micromolar range versus the recombinant human AT2 receptor. Some of the new nonpeptidic isoleucine derivatives may serve as starting points for further structural optimization. The presented data emphasize the importance of using human receptors in drug discovery programs.
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Affiliation(s)
- Malte Behrends
- Department of Medicinal Chemistry, Organic Pharmaceutical Chemistry, BMC, Uppsala University P.O. Box 574, SE-751 23 Uppsala (Sweden)
| | - Charlotta Wallinder
- Department of Medicinal Chemistry, Organic Pharmaceutical Chemistry, BMC, Uppsala University P.O. Box 574, SE-751 23 Uppsala (Sweden)
| | - Anna Wieckowska
- Department of Medicinal Chemistry, Organic Pharmaceutical Chemistry, BMC, Uppsala University P.O. Box 574, SE-751 23 Uppsala (Sweden)
| | - Marie-Odile Guimond
- Service of Endocrinology and Department of Physiology and Biophysics, Faculty of Medicine, University of Sherbrooke Sherbrooke, QC J1H 5N4 (Canada)
| | - Anders Hallberg
- Department of Medicinal Chemistry, Organic Pharmaceutical Chemistry, BMC, Uppsala University P.O. Box 574, SE-751 23 Uppsala (Sweden)
| | - Nicole Gallo-Payet
- Service of Endocrinology and Department of Physiology and Biophysics, Faculty of Medicine, University of Sherbrooke Sherbrooke, QC J1H 5N4 (Canada)
| | - Mats Larhed
- Department of Medicinal Chemistry, Organic Pharmaceutical Chemistry, BMC, Uppsala University P.O. Box 574, SE-751 23 Uppsala (Sweden)
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23
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Fang Z, Liao P, Yang Z, Wang Y, Zhou B, Yang Y, Bi X. Synthesis of Dihydrothiophenes and Thiophenes by the Strategic Use of 2-Vinylidene-1,3-dithiolane as a Masked Thiolate Anion. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301624] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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24
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Dhage YD, Daimon H, Peng C, Kusakabe T, Takahashi K, Kanno Y, Inouye Y, Kato K. Pd(ii)-catalyzed ligand controlled synthesis of pyrazole-4-carboxylates and benzo[b]thiophene-3-carboxylates. Org Biomol Chem 2014; 12:8619-26. [DOI: 10.1039/c4ob01576b] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A simple change of the ligand and solvent allows controlled, effective switching between cyclization–carbonylation–cyclization-coupling (CCC-coupling) and cyclization–carbonylation reactions.
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Affiliation(s)
| | - Hiroki Daimon
- Faculty of Pharmaceutical Sciences
- Toho University
- Funabashi, Japan
| | - Cheng Peng
- Faculty of Pharmaceutical Sciences
- Toho University
- Funabashi, Japan
| | - Taichi Kusakabe
- Faculty of Pharmaceutical Sciences
- Toho University
- Funabashi, Japan
| | | | - Yuichiro Kanno
- Faculty of Pharmaceutical Sciences
- Toho University
- Funabashi, Japan
| | - Yoshio Inouye
- Faculty of Pharmaceutical Sciences
- Toho University
- Funabashi, Japan
| | - Keisuke Kato
- Faculty of Pharmaceutical Sciences
- Toho University
- Funabashi, Japan
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25
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Jiang Y, Kusakabe T, Takahashi K, Kato K. A cyclization–carbonylation–cyclization coupling reaction of (ortho-alkynyl phenyl) (methoxymethyl) sulfides with the palladium(ii)-bisoxazoline catalyst. Org Biomol Chem 2014; 12:3380-5. [DOI: 10.1039/c4ob00299g] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A CCC-coupling reaction of (o-alkynylphenyl) (methoxymethyl) sulfides, catalyzed by (box)PdII complexes, afforded symmetrical ketones bearing two benzo[b]thiophene groups in good to excellent yields.
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Affiliation(s)
- Yiyun Jiang
- Faculty of Pharmaceutical Sciences
- Toho University
- Funabashi, Japan
| | - Taichi Kusakabe
- Faculty of Pharmaceutical Sciences
- Toho University
- Funabashi, Japan
| | | | - Keisuke Kato
- Faculty of Pharmaceutical Sciences
- Toho University
- Funabashi, Japan
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26
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Rossi R, Bellina F, Lessi M, Manzini C. Development and applications of highly selective palladium-catalyzed monocoupling reactions of (cyclo)alkenes and 1,3-alkadienes bearing two or three electrophilic sites and bis(enol triflates) with terminal alkynes. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.06.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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27
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Kim S, Dahal N, Kesharwani T. Environmentally benign process for the synthesis of 2,3-disubstituted benzo[b]thiophenes using electrophilic cyclization. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.05.139] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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28
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Nakhi A, Rahman MS, Archana S, Kishore R, Seerapu GPK, Kumar KL, Haldar D, Pal M. Construction and functionalization of pyranone ring fused with pyran moiety: design and synthesis of novel pyrano[4,3-b]pyran-5(4H)-ones as potential inhibitors of sirtuins. Bioorg Med Chem Lett 2013; 23:4195-205. [PMID: 23743280 DOI: 10.1016/j.bmcl.2013.05.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Revised: 04/24/2013] [Accepted: 05/07/2013] [Indexed: 10/26/2022]
Abstract
Novel pyrano[4,3-b]pyran-5(4H)-one based small molecules were designed as potential inhibitors of sirtuins (i.e., yeast sir2, a homolog of human SIRT1). Elegant synthesis of these compounds was performed via a multi-step sequence consisting of MCR, Sandmeyer type iodination, Sonogashira type coupling followed by iodocyclization and then Pd-mediated various C-C bond forming reactions. The overall strategy involved the construction of a pyran ring followed by the fused pyranone moiety and subsequent functionalization at C-8 position of the resultant core pyrano[4,3-b]pyran-5(4H)-one framework. The crystal structure analysis of a representative iodolactonized product (6d) is presented. Some of the synthesized compounds showed promising inhibitory activities when tested against yeast sir2 in vitro. The compound 6g showed dose dependent inhibition (IC50=78.05μM) of yeast sir2 and good interactions with this protein in silico.
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Affiliation(s)
- Ali Nakhi
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Gachibowli, Hyderabad 500 046, India
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29
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Synthesis of pyrrolo-[2,1-j]quinolone framework via intramolecular electrophilic ipso-cyclization. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2012.12.014] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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30
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Xiong X, Liu Q, Zhang J, Zhu M, Wang Y, Deng S. A facile synthesis of dithieno[3,2-b:6,7-b]fluorenes via a tandem annulation–reduction. RSC Adv 2013. [DOI: 10.1039/c3ra41927d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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31
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32
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Jia-Jie W, Zhu Y, Zhan ZP. The Synthesis of Aromatic Heterocycles from Propargylic Compounds. ASIAN J ORG CHEM 2012. [DOI: 10.1002/ajoc.201200053] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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33
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Cho CH, Shi F, Jung DI, Neuenswander B, Lushington GH, Larock RC. Solution-phase synthesis of a highly substituted furan library. ACS COMBINATORIAL SCIENCE 2012; 14:403-14. [PMID: 22612549 DOI: 10.1021/co300040q] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A library of furans has been synthesized by iodocyclization and further diversified by palladium-catalyzed coupling processes. The key intermediate 3-iodofurans have been prepared by the electrophilic iodocyclization of 2-iodo-2-alken-1-ones in the presence of various nucleophiles in good to excellent yields under mild reaction conditions. These 3-iodofurans are the key components for library generation through subsequent elaboration by palladium-catalyzed processes, such as Suzuki-Miyaura, Sonagashira, Heck, aminocarbonylation, and carboalkoxylation chemistry to afford a diverse set of 2,3,4,5-tetrasubstituted furans.
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Affiliation(s)
- Chul-Hee Cho
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Feng Shi
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Dai-Il Jung
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
- Department of Chemistry, Dong-A University, Saha-Gu, Busan 604-714, Korea
| | - Benjamin Neuenswander
- NIH Center of Excellence in Chemical Methodologies and Library Development, University of Kansas, Lawrence, Kansas 66047, United States
| | - Gerald H. Lushington
- NIH Center of Excellence in Chemical Methodologies and Library Development, University of Kansas, Lawrence, Kansas 66047, United States
| | - Richard C. Larock
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
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34
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Nakhi A, Adepu R, Rambabu D, Kishore R, Vanaja G, Kalle AM, Pal M. Thieno[3,2-c]pyran-4-one based novel small molecules: Their synthesis, crystal structure analysis and in vitro evaluation as potential anticancer agents. Bioorg Med Chem Lett 2012; 22:4418-27. [DOI: 10.1016/j.bmcl.2012.04.109] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2012] [Revised: 03/31/2012] [Accepted: 04/24/2012] [Indexed: 12/01/2022]
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35
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Mahesh Kumar P, Siva Kumar K, Meda CLT, Rajeshwar Reddy G, Mohakhud PK, Mukkanti K, Rama Krishna G, Malla Reddy C, Rambabu D, Shiva Kumar K, Krishna Priya K, Chennubhotla KS, Banote RK, Kulkarni P, Parsa KVL, Pal M. (Pd/C-mediated)coupling–iodocyclization–coupling strategy in discovery of novel PDE4 inhibitors: a new synthesis of pyrazolopyrimidines. MEDCHEMCOMM 2012. [DOI: 10.1039/c2md00273f] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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36
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Li Y, Wheeler KA, Dembinski R. Room temperature syntheses of entirely diverse substituted β-fluorofurans. Org Biomol Chem 2012; 10:2395-408. [DOI: 10.1039/c1ob06693e] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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37
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Cho CH, Jung DI, Neuenswander B, Larock RC. Parallel synthesis of a desketoraloxifene analogue library via iodocyclization/palladium-catalyzed coupling. ACS COMBINATORIAL SCIENCE 2011; 13:501-10. [PMID: 21721520 DOI: 10.1021/co200090p] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
For a future structure-activity relationship (SAR) study, a library of desketoraloxifene analogues has been prepared by parallel synthesis using iodocyclization and subsequent palladium-catalyzed coupling reactions. Points of desketoraloxifene diversification involve the two phenolic hydroxyl groups and the aliphatic amine side chain. This approach affords oxygen-bearing 3-iodobenzo[b]thiophenes 4 in excellent yields, which are easily further elaborated using a two-step approach involving Suzuki-Miyaura and Mitsunobu coupling reactions to give multimethoxy-substituted desketoraloxifene analogues 6. Various hydroxyl-substituted desketoraloxifene analogues 7 were subsequently generated by demethylation with BBr(3).
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Affiliation(s)
- Chul-Hee Cho
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Dai-Il Jung
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
- Department of Chemistry, Dong-A University, Saha-Gu, Busan 604-714, Korea
| | - Benjamin Neuenswander
- NIH Center of Excellence in Chemical Methodologies and Library Development, University of Kansas, Lawrence, Kansas 66047, United States
| | - Richard C. Larock
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
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38
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Sun LL, Deng CL, Tang RY, Zhang XG. CuI/TMEDA-catalyzed annulation of 2-bromo alkynylbenzenes with Na2S: synthesis of benzo[b]thiophenes. J Org Chem 2011; 76:7546-50. [PMID: 21812478 DOI: 10.1021/jo201081v] [Citation(s) in RCA: 111] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A copper-catalyzed thiolation annulation reaction of 2-bromo alkynylbenzenes with sodium sulfide has been developed. In the presence of CuI and TMEDA, a variety of 2-substituted benzo[b]thiophenes were readily prepared in moderate to good yields by the reaction of 2-bromo alkynylbenzenes and Na(2)S·9H(2)O.
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Affiliation(s)
- Lei-Lei Sun
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
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39
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Kuhn M, Falk FC, Paradies J. Palladium-Catalyzed C–S Coupling: Access to Thioethers, Benzo[b]thiophenes, and Thieno[3,2-b]thiophenes. Org Lett 2011; 13:4100-3. [DOI: 10.1021/ol2016093] [Citation(s) in RCA: 140] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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40
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Cho CH, Larock RC. Highly substituted lactone/ester-containing furan library by the palladium-catalyzed carbonylation of hydroxyl-substituted 3-iodofurans. ACS COMBINATORIAL SCIENCE 2011; 13:272-9. [PMID: 21434604 PMCID: PMC3096464 DOI: 10.1021/co100088q] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Highly substituted lactone- and ester-containing furans have been prepared by the efficient palladium-catalyzed intramolecular cyclocarbonylation or intermolecular carboalkoxylation, respectively, of hydroxyl-containing 3-iodofurans, readily prepared by the iodocyclization of 2-(1-alkynyl)-2-alken-1-ones in the presence of various diols.
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Affiliation(s)
- Chul-Hee Cho
- Department of Chemistry, Iowa State University, Ames, Iowa 50011
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41
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Fenster E, Long TR, Zang Q, Hill D, Neuenswander B, Lushington GH, Zhou A, Santini C, Hanson PR. Automated synthesis of a 184-member library of thiadiazepan-1,1-dioxide-4-ones. ACS COMBINATORIAL SCIENCE 2011; 13:244-50. [PMID: 21309582 PMCID: PMC3090501 DOI: 10.1021/co100060x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The construction of a 225-member (3 × 5 × 15) library of thiadiazepan-1,1-dioxide-4-ones was performed on a Chemspeed Accelerator (SLT-100) automated parallel synthesis platform, culminating in the successful preparation of 184/225 sultams. Three sultam core scaffolds were prepared based upon the utilization of an aza-Michael reaction on a multifunctional vinyl sulfonamide linchpin. The library exploits peripheral diversity in the form of a sequential, two-step [3 + 2] Huisgen cycloaddition/Pd-catalyzed Suzuki-Miyaura coupling sequence.
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Affiliation(s)
- Erik Fenster
- Center for Chemical Methodologies and Library Development at the University of Kansas (KU-CMLD), 2034 Becker Drive, Delbert M. Shankel Structural Biology Center, Lawrence, Kansas 66047, United States
| | - Toby R. Long
- Center for Chemical Methodologies and Library Development at the University of Kansas (KU-CMLD), 2034 Becker Drive, Delbert M. Shankel Structural Biology Center, Lawrence, Kansas 66047, United States
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045, United States
| | - Qin Zang
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045, United States
| | - David Hill
- Center for Chemical Methodologies and Library Development at the University of Kansas (KU-CMLD), 2034 Becker Drive, Delbert M. Shankel Structural Biology Center, Lawrence, Kansas 66047, United States
| | - Benjamin Neuenswander
- Center for Chemical Methodologies and Library Development at the University of Kansas (KU-CMLD), 2034 Becker Drive, Delbert M. Shankel Structural Biology Center, Lawrence, Kansas 66047, United States
| | - Gerald H. Lushington
- Center for Chemical Methodologies and Library Development at the University of Kansas (KU-CMLD), 2034 Becker Drive, Delbert M. Shankel Structural Biology Center, Lawrence, Kansas 66047, United States
| | - Aihua Zhou
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045, United States
| | - Conrad Santini
- Center for Chemical Methodologies and Library Development at the University of Kansas (KU-CMLD), 2034 Becker Drive, Delbert M. Shankel Structural Biology Center, Lawrence, Kansas 66047, United States
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045, United States
| | - Paul R. Hanson
- Center for Chemical Methodologies and Library Development at the University of Kansas (KU-CMLD), 2034 Becker Drive, Delbert M. Shankel Structural Biology Center, Lawrence, Kansas 66047, United States
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045, United States
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42
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Cho CH, Jung DI, Larock RC. A new approach to desketoraloxifene analogs from oxygen-bearing 3-iodobenzo[b]thiophenes prepared via iodocyclization. Tetrahedron Lett 2010; 51:6485-6488. [PMID: 21113432 DOI: 10.1016/j.tetlet.2010.09.137] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A formal total synthesis of the benzothiophene selective estrogen receptor modulator (SERM) desketoraloxifene and analogs has been accomplished from alkynes bearing electron-rich aromatic rings by electrophilic cyclization using I(2). This approach affords oxygen-bearing 3-iodobenzo[b]thiophenes in excellent yields, which are easily further elaborated using a two-step approach involving Suzuki-Miyaura and Mitsunobu coupling reactions.
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Affiliation(s)
- Chul-Hee Cho
- Department of Chemistry, Iowa State University, Ames, Iowa 50011
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