1
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Sakai D, Kojima T, Kawasaki-Takasuka T, Mori K. Stereoselective synthesis of 6/7/6-fused heterocycles with multiple stereocenters via an internal redox reaction/inverse electron-demand hetero-Diels-Alder reaction sequence. Chem Commun (Camb) 2024; 60:6797-6800. [PMID: 38869043 DOI: 10.1039/d4cc02351j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2024]
Abstract
A highly stereoselective synthesis of fused heterocycles with multiple stereocenters via an internal redox reaction/inverse electron-demand hetero-Diels-Alder (IEDHDA) reaction sequence is described. The present reaction sequence has three interesting features: (1) complete control of two potentially competitive processes, i.e., hetero-Diels-Alder reaction and [1,5]-hydride shift; (2) one-shot construction of the complicated 6/7/6-fused heterocyclic structure having multiple stereocenters; and (3) high control of its stereoselectivity. When alkenylidene barbiturates with an allyl benzyl ether moiety were treated with a catalytic amount of Sc(OTf)3 and 2,2'-bipyridine, the internal redox reaction/IEDHDA reaction proceeded successively to afford 6/7/6-fused heterocycles in good chemical yields with good to excellent diastereoselectivities.
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Affiliation(s)
- Dan Sakai
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan.
| | - Tatsuhiro Kojima
- Department of Applied Chemistry, Kobe City College of Technology (KCCT), 8-3 Gakuen-Higashimachi, Nishi-ku, Kobe, Hyogo 651-2194, Japan
| | - Tomoko Kawasaki-Takasuka
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan.
| | - Keiji Mori
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan.
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2
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Liang G, Wang S, Zhou C, Ye C, Chen B, Tung CH, Wu LZ. Photocatalytic Generation of Carbocation from Thiols and Application to Cross-Nucleophile Coupling. Org Lett 2024; 26:4286-4291. [PMID: 38722880 DOI: 10.1021/acs.orglett.4c01261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
Represented herein is a simple thiol identified as an effective precursor to photochemically form a carbocation. Thanks to the thiyl radical rapid transformation to disulfide, which serves not only to stabilize the generated thiyl radical but also to allow the second electron transfer to form a carbocation. The resulting carbocations, including primary benzylic, secondary, and tertiary carbocations, can smoothly couple with nitrogen, oxygen, and carbon nucleophilic coupling partners as well as complex drug molecules, accompanied by elemental sulfur formation in air.
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Affiliation(s)
- Ge Liang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, New Cornerstone Science Laboratory, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Shu Wang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, New Cornerstone Science Laboratory, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Chao Zhou
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, New Cornerstone Science Laboratory, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Chen Ye
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, New Cornerstone Science Laboratory, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Bin Chen
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, New Cornerstone Science Laboratory, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, New Cornerstone Science Laboratory, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, New Cornerstone Science Laboratory, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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3
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Dunkel P, Bogdán D, Deme R, Zimber Á, Ballayová V, Csizmadia E, Kontra B, Kalydi E, Bényei A, Mátyus P, Mucsi Z. C(sp 3)-H cyclizations of 2-(2-vinyl)phenoxy- tert-anilines. RSC Adv 2024; 14:16784-16800. [PMID: 38784409 PMCID: PMC11112676 DOI: 10.1039/d3ra08974f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Accepted: 04/29/2024] [Indexed: 05/25/2024] Open
Abstract
1,5-hydride transfer-triggered cyclization reactions offering a robust method for C(sp3)-C(sp3) coupling and the synthesis of e.g. tetrahydroquinolines have been thoroughly investigated in the literature. Catalysts allowing milder reaction conditions or the development of enantioselective processes were important recent contributions to the field, as well as the studies on subtrates with oxygen or sulfur heteroatoms (besides the originally described nitrogen heterocycles). In a series of studies, we focused on expanded, higher order H-transfers/cyclizations by positioning the interacting substituents on distanced rings. Cyclizations of appropriately functionalized biaryl and fused bicyclic systems led to 7-9 membered rings. In the frame of this research, we set out to study the feasibility of the cyclization and the factors affecting it by in silico methods. The conclusions drawn from computational studies were complemented by cyclization screens on 2-(2-vinyl)phenoxy-tert-anilines and their CH2-expanded analogues, the results of which are presented here. Besides isolating the expected oxazonine products in several cases, we also observed a unique dimer formation, leading to an interesting 5-6-5 ring system.
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Affiliation(s)
- Petra Dunkel
- Department of Organic Chemistry, Semmelweis University Hőgyes Endre utca 7 H-1092 Budapest Hungary
| | - Dóra Bogdán
- Department of Organic Chemistry, Semmelweis University Hőgyes Endre utca 7 H-1092 Budapest Hungary
| | - Ruth Deme
- Department of Organic Chemistry, Semmelweis University Hőgyes Endre utca 7 H-1092 Budapest Hungary
| | - Ádám Zimber
- Department of Organic Chemistry, Semmelweis University Hőgyes Endre utca 7 H-1092 Budapest Hungary
| | - Veronika Ballayová
- Department of Organic Chemistry, Semmelweis University Hőgyes Endre utca 7 H-1092 Budapest Hungary
- Department of Chemical Drugs, Masaryk University Palackého 1946/1 612 00 Brno Czech Republic
| | - Eszter Csizmadia
- Department of Organic Chemistry, Semmelweis University Hőgyes Endre utca 7 H-1092 Budapest Hungary
| | - Bence Kontra
- Department of Organic Chemistry, Semmelweis University Hőgyes Endre utca 7 H-1092 Budapest Hungary
- Department of Biological Chemistry, Brain Vision Center Liliom utca 43-45 H-1094 Budapest Hungary
| | - Eszter Kalydi
- Department of Organic Chemistry, Semmelweis University Hőgyes Endre utca 7 H-1092 Budapest Hungary
| | - Attila Bényei
- Institute of Physical Chemistry, University of Debrecen Egyetem tér 1 H-4010 Debrecen Hungary
| | - Péter Mátyus
- Department of Organic Chemistry, Semmelweis University Hőgyes Endre utca 7 H-1092 Budapest Hungary
- University of Veterinary Medicine István utca 2 H-1078 Budapest Hungary
| | - Zoltán Mucsi
- Department of Biological Chemistry, Brain Vision Center Liliom utca 43-45 H-1094 Budapest Hungary
- Department of Chemistry, Femtonics Ltd Tűzoltó utca 59 H-1094 Budapest Hungary
- Institute of Chemistry, University of Miskolc Egyetem út 1 H-3515 Miskolc Hungary
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4
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Koyama R, Anada M, Sueki S, Makino K, Kojima T, Kawasaki-Takasuka T, Mori K. Divergent synthesis of multi-substituted phenanthrenes via an internal redox reaction/ring expansion sequence. Chem Commun (Camb) 2024; 60:3822-3825. [PMID: 38497170 DOI: 10.1039/d4cc00797b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2024]
Abstract
We report an effective synthetic route to multi-substituted phenanthrenes via an internal redox reaction/ring expansion sequence. The interesting feature of the present system is that it allows for the divergent synthesis of the target skeleton depending on the selected Lewis acid catalyst. When benzylidene malonates with a cyclic structure at the ortho-position were treated with BF3·OEt2, three sequential processes (internal redox reaction/elimination of the alkoxy group/ring expansion) proceeded to give phenanthrene derivatives in which the alkoxycarbonyl (CO2R) group and the alkyl (R) group were in close proximity to each other, in good chemical yields. In sharp contrast, treatment with Bi(OTf)3 exclusively led to the formation of another type of phenanthrene, whose R group was positioned distal to the CO2R group.
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Affiliation(s)
- Ryosei Koyama
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan.
| | - Masahiro Anada
- Faculty of Pharmacy, Musashino University, Nishitokyo, Tokyo 202-8585, Japan
- Research Institute of Pharmaceutical Sciences, Musashino University, Nishitokyo, Tokyo 202-8585, Japan
| | - Shunsuke Sueki
- Faculty of Pharmacy, Musashino University, Nishitokyo, Tokyo 202-8585, Japan
- Research Institute of Pharmaceutical Sciences, Musashino University, Nishitokyo, Tokyo 202-8585, Japan
| | - Kosho Makino
- Faculty of Pharmacy, Musashino University, Nishitokyo, Tokyo 202-8585, Japan
- Research Institute of Pharmaceutical Sciences, Musashino University, Nishitokyo, Tokyo 202-8585, Japan
| | - Tatsuhiro Kojima
- Department of Applied Chemistry, Kobe City College of Technology (KCCT), 8-3 Gakuen-Higashimachi, Nishi-ku, Kobe, 651-2194, Japan
| | - Tomoko Kawasaki-Takasuka
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan.
| | - Keiji Mori
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan.
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5
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Okawa H, Kawasaki-Takasuka T, Mori K. Silyl-Group Boosted Internal Redox Reaction: Hydride Shift from an Aliphatic Secondary Position for the Formation of Six- and Seven-Membered Carbocycles. Org Lett 2024; 26:1662-1666. [PMID: 38382544 DOI: 10.1021/acs.orglett.4c00140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
We report a hydride shift/cyclization reaction at the aliphatic secondary position (methylene group). The key to accomplishing this reaction was the employment of benzylidene malonate having a silyl group β to the hydride donor carbon. When the corresponding malonates were treated with a catalytic amount of Al(OTf)3, the [1,5]-hydride shift from the simple aliphatic secondary position proceeded smoothly to afford silyl-group substituted tetralin derivatives in excellent chemical yields (up to 98%). This reaction system was applied to the formation of seven-membered carbocycles via the [1,6]-hydride shift mediated process.
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Affiliation(s)
- Hiroto Okawa
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Tomoko Kawasaki-Takasuka
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Keiji Mori
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
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6
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Smith LB, Armstrong RJ, Hou J, Smith E, Sze M, Sterling AJ, Smith A, Duarte F, Donohoe TJ. Redox Reorganization: Aluminium Promoted 1,5-Hydride Shifts Allow the Controlled Synthesis of Multisubstituted Cyclohexenes. Angew Chem Int Ed Engl 2023; 62:e202307424. [PMID: 37358307 PMCID: PMC10953022 DOI: 10.1002/anie.202307424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 06/21/2023] [Accepted: 06/26/2023] [Indexed: 06/27/2023]
Abstract
An efficient synthesis of cyclohexenes has been achieved from easily accessible tetrahydropyrans via a tandem 1,5-hydride shift-aldol condensation. We discovered that readily available aluminium reagents, e.g. Al2 O3 or Al(Ot Bu)3 are essential for this process, promoting the 1,5-hydride shift with complete regio- and enantiospecificity (in stark contrast to results obtained under basic conditions). The mild conditions, coupled with multiple methods available to access the tetrahydropyran starting materials makes this a versatile method with exceptional functional group tolerance. A wide range of cyclohexenes (>40 examples) have been prepared, many in enantiopure form, showing our ability to selectively install a substituent at each position around the newly forged cyclohexene ring. Experimental and computational studies revealed that aluminium serves a dual role in facilitating the hydride shift, activating both the alkoxide nucleophile and the electrophilic carbonyl group.
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Affiliation(s)
- Lewis B. Smith
- Chemistry Research LaboratoryUniversity of OxfordOX1 3TAOxfordUK
| | - Roly J. Armstrong
- Chemistry Research LaboratoryUniversity of OxfordOX1 3TAOxfordUK
- School of Natural and Environmental SciencesNewcastle UniversityNE1 7RUNewcastle Upon TyneUK
| | - Jingyan Hou
- Chemistry Research LaboratoryUniversity of OxfordOX1 3TAOxfordUK
| | - Edward Smith
- Chemistry Research LaboratoryUniversity of OxfordOX1 3TAOxfordUK
| | - Ming Sze
- Chemistry Research LaboratoryUniversity of OxfordOX1 3TAOxfordUK
| | | | - Alex Smith
- Syngenta, Jealott's Hill International Research CentreRG42 6EYBracknellBerkshireUK
| | - Fernanda Duarte
- Chemistry Research LaboratoryUniversity of OxfordOX1 3TAOxfordUK
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7
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Mori K, Okawa H. Hydride shift mediated C(sp3)–H bond functionalization starting from non-aniline/phenol type substrates: Evolution into a sequential system. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154178] [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]
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8
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Bagherinejad A, Alizadeh A. A review of the synthetic strategies toward spirobarbiturate-fused 3- to 7-membered rings. Org Biomol Chem 2022; 20:7188-7215. [PMID: 36070341 DOI: 10.1039/d2ob01326f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Spiro-connected hexahydropyrimidine-2,4,6-trione heterocyclic rings have received increasing attention from the viewpoint of biological activity and synthetic methods due to the importance of the rigid heterocyclic system and unique orientation of the functional substituents. Since 1900, numerous studies have exploited the synthesis of various spirobarbiturate-fused carbo- and heterocycles by applying different strategies. Due to the importance of barbiturate-based olefins as activated alkenes, these substrates have been utilized in many reactions. In addition, the nucleophilic addition of 1,3-disubstituted barbituric acid to different electrophiles has been applied to prepare highly functionalized spirobarbiturate scaffolds. This short review highlights various strategies for synthesizing spirobarbiturate-fused 3- to 7-membered carbo- and heterocyclic rings and some catalytic diastereoselective and enantioselective chemical reactions to access chiral compounds. The sections are divided by the incorporation of 3- to 7-membered heterocyclic or carbocyclic rings into a spirobarbiturate scaffold, and are presented in different subsections depending on the mechanistic details.
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Affiliation(s)
- Akram Bagherinejad
- 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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9
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Zaitseva E, Smirnov A, Timashev V, Malyshev W, Zhigileva E, Mikhaylov A, Medvedev M, Baleeva N, Baranov MS. BF3 mediated [1,5]‐Hydride Shift Triggered Cyclization: Thioethers Join the Game. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200547] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Elvira Zaitseva
- IBCh RAS: FBGUN Institut bioorganiceskoj himii im akademikov M M Semakina i U A Ovcinnikova Rossijskoj akademii nauk Department of Chemistry Moskva RUSSIAN FEDERATION
| | - Alexander Smirnov
- IBCh RAS: FBGUN Institut bioorganiceskoj himii im akademikov M M Semakina i U A Ovcinnikova Rossijskoj akademii nauk Department of Chemistry Moskva RUSSIAN FEDERATION
| | - Vladimir Timashev
- Zelinsky Institute of Organic Chemistry RAS: Institut organiceskoj himii imeni N D Zelinskogo RAN Department of Chemistry Moskva RUSSIAN FEDERATION
| | - Wadim Malyshev
- Zelinsky Institute of Organic Chemistry RAS: Institut organiceskoj himii imeni N D Zelinskogo RAN Department of Chemistry Moskva RUSSIAN FEDERATION
| | - Ekaterina Zhigileva
- IBCh RAS: FBGUN Institut bioorganiceskoj himii im akademikov M M Semakina i U A Ovcinnikova Rossijskoj akademii nauk Department of Chemistry Moskva RUSSIAN FEDERATION
| | - Andrey Mikhaylov
- IBCh RAS: FBGUN Institut bioorganiceskoj himii im akademikov M M Semakina i U A Ovcinnikova Rossijskoj akademii nauk Department of Chemistry Moskva RUSSIAN FEDERATION
| | - Michael Medvedev
- Zelinsky Institute of Organic Chemistry RAS: Institut organiceskoj himii imeni N D Zelinskogo RAN Department of Chemistry Moskva RUSSIAN FEDERATION
| | - Nadezhda Baleeva
- IBCh RAS: FBGUN Institut bioorganiceskoj himii im akademikov M M Semakina i U A Ovcinnikova Rossijskoj akademii nauk Department of Chemistry Moskva RUSSIAN FEDERATION
| | - Mikhail S. Baranov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences Group of chemistry of heterocyclic compounds Ulitsa Miklukho-Maklaya, 16/10 117997 Moscow RUSSIAN FEDERATION
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10
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Mori K. C(sp3)–H Bond Functionalization Mediated by Hydride Shift/Cyclization System. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2022. [DOI: 10.1246/bcsj.20210420] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Keiji Mori
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588
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11
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Xie R, Chen S, Xiang X, Yin X, Xu L, Li SS, Wang L, Dong F. Diastereoselective construction of structurally diverse 2,3-dihydroquinolin-4-one scaffolds via redox neutral cascade [1,7]-hydride transfer/cyclization. Org Chem Front 2022. [DOI: 10.1039/d1qo01530c] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The 2,3-dihydroquinolin-4-one scaffolds were constructed diastereoselectively via cascade Knoevengel condensation/[1,7]-HT/cyclization/transesterification featuring novel structures and diastereoselective construction of all-carbon quaternary centers.
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Affiliation(s)
- Ronghao Xie
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Changcheng Rd. #700, Qingdao, 266109, P. R. China
| | - Shixiao Chen
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Yushan Rd. #5, Qingdao, 266003, P. R. China
| | - Xianping Xiang
- Peking University science park, No. 127, North Street of Zhongguancun, Beijing, 100080, P. R. China
| | - Xiangcong Yin
- Hematology Diagnosis Laboratory, The Affiliated Hospital of Qingdao University, Qingdao, 266003, P. R. China
| | - Lubin Xu
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Changcheng Rd. #700, Qingdao, 266109, P. R. China
| | - Shuai-Shuai Li
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Changcheng Rd. #700, Qingdao, 266109, P. R. China
| | - Liang Wang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Changcheng Rd. #700, Qingdao, 266109, P. R. China
| | - Fengying Dong
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Changcheng Rd. #700, Qingdao, 266109, P. R. China
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12
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Hu F, Li X, Ding Z, Wang L, Ge C, Xu L, Li SS. Divergent Synthesis of [3,4]-Fused 3-Alkenyl-Oxindoles via Propargyl Alcohol-Triggered C(sp3)–H Functionalization. ACS Catal 2021. [DOI: 10.1021/acscatal.1c04931] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Fangzhi Hu
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Xinyao Li
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Zhanshuai Ding
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Liang Wang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Chunyan Ge
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Lubin Xu
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Shuai-Shuai Li
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
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13
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Yang S, An XD, Qiu B, Liu RB, Xiao J. Access to Polycyclic Indole-3,4-Fused Nine-Membered Ring via Cascade 1,6-Hydride Transfer/Cyclization. Org Lett 2021; 23:9100-9105. [PMID: 34766504 DOI: 10.1021/acs.orglett.1c03389] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A cascade aldimine condensation/1,6-hydride transfer/Mannich-type cyclization of indole-derived phenylenediamine with aldehydes was developed for one-step construction of a polycyclic indole-3,4-fused skeleton. Aldehyde serves as a key to start the whole process, including 1,6-hydride transfer enabled δ-C(sp3)-H activation of the secondary amine. The challenges of construction of medium-sized rings are addressed via hydride transfer chemistry.
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Affiliation(s)
- Shuo Yang
- School of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Xiao-De An
- School of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Bin Qiu
- School of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Rui-Bin Liu
- Shandong Kangqiao Biotechnology Co. Ltd., Binzhou 256500, China
| | - Jian Xiao
- School of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China.,School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China
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14
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Stereoselective synthesis of highly congested tetralin-fused spirooxindoles with hydroxy group: Pseudo oxygen atom induced hydride shift/cyclization process. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153408] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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15
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Abstract
Interrupted reactions reroute established processes to new and often unanticipated end points. Of particular interest are the cases in which a known reactive intermediate takes on a new reaction pathway, either because this pathway is lower in energy or because the conventional pathway is no longer available. Through analysis of documented cases, we aim to dissect the known interrupted reactions and trace their mechanistic origins. As new chemical processes are being discovered at a seemingly ever-increasing pace, it is likely that new interrupted reactions will continue to emerge. Our hope is that the cases considered in this Review will help identify new classes of these fascinating transformations.
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16
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Synthesis of spiro[imidazole-4,3'-quinolin]ones from [2-(dimethylamino)benzylidene]-2-(methylsulfanyl)imidazolones. Chem Heterocycl Compd (N Y) 2021. [DOI: 10.1007/s10593-021-02969-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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17
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Yang X, Liu J, Hu F, Sun H, Wang L, Li SS. Diverse Application of 4-Hydroxycoumarin in the Syntheses of Tetrahydroquinoline and Zwitterionic Biscoumarin Derivatives. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202101024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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18
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Bhowmik A, Das S, Sarkar W, Saidalavi KM, Mishra A, Roy A, Deb I. Diastereoselective Spirocyclization via Intramolecular C(
sp
3
)−H Bond Functionalization Triggered by Sequential [1,5]‐Hydride Shift/Cyclization Process: Approach to Spiro‐tetrahydroquinolines. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202001011] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Arup Bhowmik
- Organic and Medicinal Chemistry Division Indian Institute of Chemical Biology 4-Raja S. C. Mullick Road, Jadavpur Kolkata 700032 India
| | - Sumit Das
- Organic and Medicinal Chemistry Division Indian Institute of Chemical Biology 4-Raja S. C. Mullick Road, Jadavpur Kolkata 700032 India
- Academy of Scientific and Innovative Research (AcSIR). Kamla Nehru Nagar 201002 Ghaziabad India
| | - Writhabrata Sarkar
- Organic and Medicinal Chemistry Division Indian Institute of Chemical Biology 4-Raja S. C. Mullick Road, Jadavpur Kolkata 700032 India
| | - K. M. Saidalavi
- Organic and Medicinal Chemistry Division Indian Institute of Chemical Biology 4-Raja S. C. Mullick Road, Jadavpur Kolkata 700032 India
| | - Aniket Mishra
- Organic and Medicinal Chemistry Division Indian Institute of Chemical Biology 4-Raja S. C. Mullick Road, Jadavpur Kolkata 700032 India
| | - Anupama Roy
- Organic and Medicinal Chemistry Division Indian Institute of Chemical Biology 4-Raja S. C. Mullick Road, Jadavpur Kolkata 700032 India
| | - Indubhusan Deb
- Organic and Medicinal Chemistry Division Indian Institute of Chemical Biology 4-Raja S. C. Mullick Road, Jadavpur Kolkata 700032 India
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19
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Xing Y, Dong F, Yin X, Wang L, Li S. Facile Construction of 3,4‐dihydro‐2H‐1,2,4‐Benzothiadiazine 1,1‐Dioxides via Redox‐Neutral Cascade Condensation/[1,7]‐Hydride Transfer/Cyclization. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000485] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yingying Xing
- College of Chemistry and Pharmaceutical Sciences Qingdao Agricultural University No.700, Changcheng Rd. Qingdao 266109 P. R. China
| | - Fengying Dong
- College of Chemistry and Pharmaceutical Sciences Qingdao Agricultural University No.700, Changcheng Rd. Qingdao 266109 P. R. China
| | - Xiangcong Yin
- Hematology Diagnosis Laboratory The Affiliated Hospital of Qingdao University No. 16, Jiangsu Rd. Qingdao 266003 P. R. China
| | - Liang Wang
- College of Chemistry and Pharmaceutical Sciences Qingdao Agricultural University No.700, Changcheng Rd. Qingdao 266109 P. R. China
- Shandong Key Laboratory of Biochemical Analysis; College of Chemistry and Molecular Engineering Qingdao University of Science and Technology No.53, Zhengzhou Rd. Qingdao 266042 P. R. China
| | - Shuai‐Shuai Li
- College of Chemistry and Pharmaceutical Sciences Qingdao Agricultural University No.700, Changcheng Rd. Qingdao 266109 P. R. China
- Shandong Key Laboratory of Biochemical Analysis; College of Chemistry and Molecular Engineering Qingdao University of Science and Technology No.53, Zhengzhou Rd. Qingdao 266042 P. R. China
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20
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Hoshino D, Mori K. Rapid access to 3-indolyl-1-trifluoromethyl-isobenzofurans by hybrid use of Lewis/Brønsted acid catalysts. Org Biomol Chem 2020; 18:6602-6606. [PMID: 32815970 DOI: 10.1039/d0ob01582b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
We report herein a rapid access to 3-indolyl-1-trifluoromethyl-isobenzofurans via a [1,4]-hydride shift/cyclizatin/intermolecular nucleophilic addition reaction sequence. In this process, a Lewis acid promoted internal redox reaction ([1,4]-hydride shift/cyclization) followed by a Brønsted acid promoted intermolecular reaction (generation of cyclic oxonium cation/intermolecular Friedel-Crafts reaction) occurred to give various 3-indolyl-1-trifluoromethyl-isobenzofurans in good chemical yields.
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Affiliation(s)
- Daiki Hoshino
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan.
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21
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Yokoo K, Sakai D, Mori K. Highly Stereoselective Synthesis of Fused Tetrahydropyrans via Lewis-Acid-Promoted Double C(sp3)–H Bond Functionalization. Org Lett 2020; 22:5801-5805. [DOI: 10.1021/acs.orglett.0c01867] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kazuma Yokoo
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Dan Sakai
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Keiji Mori
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
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22
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Duan K, An XD, Li LF, Sun LL, Qiu B, Li XJ, Xiao J. Hydride Transfer Initiated Redox-Neutral Cascade Cyclizations of Aurones: Facile Access to [6,5] Spirocycles. Org Lett 2020; 22:2537-2541. [PMID: 32186385 DOI: 10.1021/acs.orglett.0c00309] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Reported herein is the hydride transfer initiated redox-neutral cascade cyclizations of aurones, providing a variety of [6,5] spiro-heterocycles in satisfactory yields and good diastereoselectivities.
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Affiliation(s)
- Kang Duan
- School of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, 266109, China
| | - Xiao-De An
- School of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, 266109, China
| | - Long-Fei Li
- School of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, 266109, China
| | - Lian-Lian Sun
- The Affiliated Hospital of Huizhou Health Sciences Polytechnic, Huizhou, 516025, China
| | - Bin Qiu
- School of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, 266109, China
| | - Xian-Jiang Li
- Shandong Kangqiao Biotechnology Co. Ltd., Binzhou, 256500, China
| | - Jian Xiao
- School of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, 266109, China.,School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China
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23
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Smith LB, Armstrong RJ, Matheau-Raven D, Donohoe TJ. Chemo- and Regioselective Synthesis of Acyl-Cyclohexenes by a Tandem Acceptorless Dehydrogenation-[1,5]-Hydride Shift Cascade. J Am Chem Soc 2020; 142:2514-2523. [PMID: 31967814 PMCID: PMC7145340 DOI: 10.1021/jacs.9b12296] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
![]()
An
atom-economical methodology to access substituted acyl-cyclohexenes
from pentamethylacetophenone and 1,5-diols is described. This process is catalyzed by an
iridium(I) catalyst in conjunction with a bulky electron rich phosphine
ligand (CataCXium A) which favors acceptorless dehydrogenation over
conjugate reduction to the corresponding cyclohexane. The reaction
produces water and hydrogen gas as the sole byproducts and a wide
range of functionalized acyl-cyclohexene products can be synthesized
using this method in very high yields. A series of control experiments
were carried out, which revealed that the process is initiated by
acceptorless dehydrogenation of the diol followed by a redox-neutral
cascade process, which is independent of the iridium catalyst. Deuterium
labeling studies established that the key step of this cascade involves
a novel base-mediated [1,5]-hydride shift. The cyclohexenyl ketone
products could readily be cleaved under mildly acidic conditions to
access a range of valuable substituted cyclohexene derivatives.
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Affiliation(s)
- Lewis B Smith
- Chemistry Research Laboratory , University of Oxford , Mansfield Road , Oxford OX1 3TA , United Kingdom
| | - Roly J Armstrong
- Chemistry Research Laboratory , University of Oxford , Mansfield Road , Oxford OX1 3TA , United Kingdom
| | - Daniel Matheau-Raven
- Chemistry Research Laboratory , University of Oxford , Mansfield Road , Oxford OX1 3TA , United Kingdom
| | - Timothy J Donohoe
- Chemistry Research Laboratory , University of Oxford , Mansfield Road , Oxford OX1 3TA , United Kingdom
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24
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Zhou L, An XD, Yang S, Li XJ, Shao CL, Liu Q, Xiao J. Organocatalytic Cascade β-Functionalization/Aromatization of Pyrrolidines via Double Hydride Transfer. Org Lett 2020; 22:776-780. [DOI: 10.1021/acs.orglett.9b03918] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Lan Zhou
- School of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Xiao-De An
- School of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Shuo Yang
- School of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
| | - Xian-Jiang Li
- Shandong Kangqiao Biotechnology Co., Ltd., Binzhou 256500, China
| | - Chang-Lun Shao
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Qing Liu
- College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Jian Xiao
- Shandong Province Key Laboratory of Applied Mycology, School of Chemistry and Pharmaceutical Sciences, School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
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25
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Yokoo K, Mori K. Expeditious Synthesis of Multisubstituted Quinolinone Derivatives Based on Ring Recombination Strategy. Org Lett 2020; 22:244-248. [PMID: 31834806 DOI: 10.1021/acs.orglett.9b04224] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We achieved a concise construction of 3-substituted quinolinone derivatives based on a ring recombination strategy. In this process, seven transformations involving two types of cyclization proceeded in one pot to afford various quinolinone derivatives in good to excellent chemical yields (up to 98%).
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Affiliation(s)
- Kazuma Yokoo
- Department of Applied Chemistry , Graduate School of Engineering, Tokyo University of Agriculture and Technology , 2-24-16 Nakacho , Koganei , Tokyo 184-8588 , Japan
| | - Keiji Mori
- Department of Applied Chemistry , Graduate School of Engineering, Tokyo University of Agriculture and Technology , 2-24-16 Nakacho , Koganei , Tokyo 184-8588 , Japan
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26
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Kataoka M, Otawa Y, Ido N, Mori K. Highly Diastereoselective Synthesis of Medium-Sized Carbocycle-Fused Piperidines via Sequential Hydride Shift Triggered Double C(sp3)–H Bond Functionalization. Org Lett 2019; 21:9334-9338. [DOI: 10.1021/acs.orglett.9b03498] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Miyabi Kataoka
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Yuna Otawa
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Natsuki Ido
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Keiji Mori
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
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27
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Zhou L, Shen YB, An XD, Li XJ, Li SS, Liu Q, Xiao J. Redox-Neutral β-C(sp 3)-H Functionalization of Cyclic Amines via Intermolecular Hydride Transfer. Org Lett 2019; 21:8543-8547. [PMID: 31633932 DOI: 10.1021/acs.orglett.9b03004] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein, we report the first redox-neutral and transition-metal-free β-C(sp3)-H functionalization of cyclic amines via a consecutive intermolecular hydride transfer process. A series of N-aryl pyrrolidines and N-aryl 1,2,3,4-tetrahydropyridines decorated with CF3 and carboxylic ester functionalities are directly accessed in good yields from pyrrolidines and piperidines. This work pushes forward the application of the intermolecular hydride transfer strategy in one-step assembly of molecular complexity.
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Affiliation(s)
- Lan Zhou
- Shandong Province Key Laboratory of Applied Mycology, College of Chemistry and Pharmaceutical Sciences , Qingdao Agricultural University , Qingdao , 266109 , China
| | - Yao-Bin Shen
- Shandong Province Key Laboratory of Applied Mycology, College of Chemistry and Pharmaceutical Sciences , Qingdao Agricultural University , Qingdao , 266109 , China
| | - Xiao-De An
- Shandong Province Key Laboratory of Applied Mycology, College of Chemistry and Pharmaceutical Sciences , Qingdao Agricultural University , Qingdao , 266109 , China
| | - Xian-Jiang Li
- Shandong Kangqiao Biotechnology Co. Ltd. , Binzhou , 256500 , China
| | - Shuai-Shuai Li
- Shandong Province Key Laboratory of Applied Mycology, College of Chemistry and Pharmaceutical Sciences , Qingdao Agricultural University , Qingdao , 266109 , China
| | - Qing Liu
- College of Chemical and Environmental Engineering , Shandong University of Science and Technology , Qingdao 266590 , China
| | - Jian Xiao
- Shandong Province Key Laboratory of Applied Mycology, College of Chemistry and Pharmaceutical Sciences , Qingdao Agricultural University , Qingdao , 266109 , China.,College of Marine Science and Engineering , Qingdao Agricultural University , Qingdao 266109 , China
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28
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Hisano N, Kimura D, Mori K. Synthesis of Seven-membered Ring Containing Difluoromethylene Unit by Sc(OTf)3-catalyzed Activation of Single C–F Bond in CF3 Group. CHEM LETT 2019. [DOI: 10.1246/cl.190280] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Naoya Hisano
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Daiki Kimura
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Keiji Mori
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
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29
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Mahesh SK, Nanubolu JB, Sudhakar G. Tandem Addition/Electrocyclization/Benzylation of Alkyl Aryl-1,3-dienes and Aromatic Aldehydes: Access to Highly Substituted Indenes. J Org Chem 2019; 84:7815-7828. [DOI: 10.1021/acs.joc.9b00679] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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30
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Zhao S, Wang X, Wang P, Wang G, Zhao W, Tang X, Guo M. BF3·OEt2-Promoted Propargyl Alcohol Rearrangement/[1,5]-Hydride Transfer/Cyclization Cascade Affording Tetrahydroquinolines. Org Lett 2019; 21:3990-3993. [DOI: 10.1021/acs.orglett.9b01153] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shuang Zhao
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Xiaoyang Wang
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Pengfei Wang
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Guangwei Wang
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Wentao Zhao
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Xiangyang Tang
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Minjie Guo
- Institute for Molecular Design and Synthesis, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P. R. China
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31
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Ido N, Mori K. Diastereoselective Synthesis of Multisubstituted Chroman Derivatives via Iminium Formation/Morita-Baylis-Hillman Reaction/ Oxa-Michael Reaction Sequence. CHEM LETT 2019. [DOI: 10.1246/cl.180988] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Natsuki Ido
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Keiji Mori
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
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32
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Tamura R, Kitamura E, Tsutsumi R, Yamanaka M, Akiyama T, Mori K. Diastereoselective Synthesis of CF 3-Substituted Spiroisochromans by [1,5]-Hydride Shift/Cyclization/Intramolecular Friedel-Crafts Reaction Sequence. Org Lett 2019; 21:2383-2387. [PMID: 30882229 DOI: 10.1021/acs.orglett.9b00668] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Developed herein is a diastereoselective synthesis of CF3-substituted spiroisochromans via C(sp3)-H bond functionalization involving sequential transformations ([1,5]-hydride shift/cyclization/elimination of MeOH/intramolecular Friedel-Crafts reaction).
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Affiliation(s)
- Risa Tamura
- Department of Applied Chemistry, Graduate School of Engineering , Tokyo University of Agriculture and Technology , 2-24-16 Nakacho , Koganei , Tokyo 184-8588 , Japan
| | - Eriko Kitamura
- Department of Chemistry, Faculty of Science , Gakushuin University , Mejiro, Toshima-ku , Tokyo 171-8588 , Japan
| | - Ryosuke Tsutsumi
- Department of Chemistry and Research Center for Smart Molecules , Rikkyo University , 3-34-1 Nishi-Ikebukuro , Toshima-ku , Tokyo 171-8501 , Japan
| | - Masahiro Yamanaka
- Department of Chemistry and Research Center for Smart Molecules , Rikkyo University , 3-34-1 Nishi-Ikebukuro , Toshima-ku , Tokyo 171-8501 , Japan
| | - Takahiko Akiyama
- Department of Chemistry, Faculty of Science , Gakushuin University , Mejiro, Toshima-ku , Tokyo 171-8588 , Japan
| | - Keiji Mori
- Department of Applied Chemistry, Graduate School of Engineering , Tokyo University of Agriculture and Technology , 2-24-16 Nakacho , Koganei , Tokyo 184-8588 , Japan
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33
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Affiliation(s)
- Hua Wu
- Laboratory of Synthesis and Natural Products; Institute of Chemical Sciences and Engineering; Ecole Polytechnique Fédérale de Lausanne; EPFL-SB-ISIC-LSPN; BCH 5304 1015 Lausanne Switzerland
| | - Qian Wang
- Laboratory of Synthesis and Natural Products; Institute of Chemical Sciences and Engineering; Ecole Polytechnique Fédérale de Lausanne; EPFL-SB-ISIC-LSPN; BCH 5304 1015 Lausanne Switzerland
| | - Jieping Zhu
- Laboratory of Synthesis and Natural Products; Institute of Chemical Sciences and Engineering; Ecole Polytechnique Fédérale de Lausanne; EPFL-SB-ISIC-LSPN; BCH 5304 1015 Lausanne Switzerland
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34
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Otawa Y, Mori K. Construction of seven- and eight-membered carbocycles by Lewis acid catalyzed C(sp3)–H bond functionalization. Chem Commun (Camb) 2019; 55:13856-13859. [DOI: 10.1039/c9cc08074k] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Concise construction of seven- or eight-membered carbocycles was accomplished by Lewis acid catalyzed C(sp3)–H bond functionalization.
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Affiliation(s)
- Yuna Otawa
- Department of Applied Chemistry
- Graduate School of Engineering
- Tokyo University of Agriculture and Technology
- Tokyo 184-8588
- Japan
| | - Keiji Mori
- Department of Applied Chemistry
- Graduate School of Engineering
- Tokyo University of Agriculture and Technology
- Tokyo 184-8588
- Japan
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35
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First diastereoselective synthesis of perfluoroalkylated cis-spiropyrido[2,1-a]isoquinoline-1,5’-pyrimidines. J Fluor Chem 2018. [DOI: 10.1016/j.jfluchem.2018.09.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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36
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Mori K, Umehara N, Akiyama T. Highly diastereoselective synthesis of tricyclic fused-pyrans by sequential hydride shift mediated double C(sp 3)-H bond functionalization. Chem Sci 2018; 9:7327-7331. [PMID: 30542535 PMCID: PMC6237131 DOI: 10.1039/c8sc02103a] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Accepted: 06/23/2018] [Indexed: 11/23/2022] Open
Abstract
Described herein is the Brønsted acid-catalyzed double C(sp3)-H bond functionalization of alkyl phenethyl ether derivatives. In this process, a [1,5]-[1,5]-hydride shift occurred successively to afford tricyclic fused pyran derivatives in excellent chemical yields with excellent diastereoselectivities (up to >20 : 1). The key to achieve this reaction was the introduction of two methyl groups at the benzylic position, which was effective in both hydride shift processes: (1) the Thorpe-Ingold effect for the first hydride shift and (2) conformational control in the second hydride shift.
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Affiliation(s)
- Keiji Mori
- Department of Chemistry , Faculty of Science , Gakushuin University , 1-5-1 Mejiro, Toshima-ku , Tokyo 171-8588 , Japan . ; ; Tel: +81-3-3986-0221
- Department of Applied Chemistry , Graduate School of Engineering , Tokyo University of Agriculture and Technology , 2-24-16 Nakacho, Koganei , Tokyo 184-8588 , Japan
| | - Nobuaki Umehara
- Department of Chemistry , Faculty of Science , Gakushuin University , 1-5-1 Mejiro, Toshima-ku , Tokyo 171-8588 , Japan . ; ; Tel: +81-3-3986-0221
| | - Takahiko Akiyama
- Department of Chemistry , Faculty of Science , Gakushuin University , 1-5-1 Mejiro, Toshima-ku , Tokyo 171-8588 , Japan . ; ; Tel: +81-3-3986-0221
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37
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Huang HM, Procter DJ. Selective Electron Transfer Reduction of Urea-Type Carbonyls. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800794] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Huan-Ming Huang
- School of Chemistry; University of Manchester; Oxford Road Manchester, M13 9PL UK
| | - David J. Procter
- School of Chemistry; University of Manchester; Oxford Road Manchester, M13 9PL UK
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38
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Lu XL, Lyu MY, Peng XS, Wong HNC. Gold(I)-Catalyzed Tandem Cycloisomerization of 1,5-Enyne Ethers by Hydride Transfer. Angew Chem Int Ed Engl 2018; 57:11365-11368. [DOI: 10.1002/anie.201806842] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Xiao-Lin Lu
- Department of Chemistry, and State Key Laboratory of Synthetic Chemistry; The Chinese University of Hong Kong; Shatin, New Territories Hong Kong SAR China
| | - Mao-Yun Lyu
- Department of Chemistry, and State Key Laboratory of Synthetic Chemistry; The Chinese University of Hong Kong; Shatin, New Territories Hong Kong SAR China
| | - Xiao-Shui Peng
- Department of Chemistry, and State Key Laboratory of Synthetic Chemistry; The Chinese University of Hong Kong; Shatin, New Territories Hong Kong SAR China
- Shenzhen Municipal Key Laboratory of Chemical Synthesis of Medicinal Organic Molecules; Shenzhen Research Institute; The Chinese University of Hong Kong; No.10, Second Yuexing Road Shenzhen 518507 China
| | - Henry N. C. Wong
- Department of Chemistry, and State Key Laboratory of Synthetic Chemistry; The Chinese University of Hong Kong; Shatin, New Territories Hong Kong SAR China
- Shenzhen Municipal Key Laboratory of Chemical Synthesis of Medicinal Organic Molecules; Shenzhen Research Institute; The Chinese University of Hong Kong; No.10, Second Yuexing Road Shenzhen 518507 China
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39
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Lu XL, Lyu MY, Peng XS, Wong HNC. Gold(I)-Catalyzed Tandem Cycloisomerization of 1,5-Enyne Ethers by Hydride Transfer. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806842] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xiao-Lin Lu
- Department of Chemistry, and State Key Laboratory of Synthetic Chemistry; The Chinese University of Hong Kong; Shatin, New Territories Hong Kong SAR China
| | - Mao-Yun Lyu
- Department of Chemistry, and State Key Laboratory of Synthetic Chemistry; The Chinese University of Hong Kong; Shatin, New Territories Hong Kong SAR China
| | - Xiao-Shui Peng
- Department of Chemistry, and State Key Laboratory of Synthetic Chemistry; The Chinese University of Hong Kong; Shatin, New Territories Hong Kong SAR China
- Shenzhen Municipal Key Laboratory of Chemical Synthesis of Medicinal Organic Molecules; Shenzhen Research Institute; The Chinese University of Hong Kong; No.10, Second Yuexing Road Shenzhen 518507 China
| | - Henry N. C. Wong
- Department of Chemistry, and State Key Laboratory of Synthetic Chemistry; The Chinese University of Hong Kong; Shatin, New Territories Hong Kong SAR China
- Shenzhen Municipal Key Laboratory of Chemical Synthesis of Medicinal Organic Molecules; Shenzhen Research Institute; The Chinese University of Hong Kong; No.10, Second Yuexing Road Shenzhen 518507 China
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40
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Hisano N, Kamei Y, Kansaku Y, Yamanaka M, Mori K. Construction of 1,3-Dithio-Substituted Tetralins by [1,5]-Alkylthio Group Transfer Mediated Skeletal Rearrangement. Org Lett 2018; 20:4223-4226. [PMID: 29957962 DOI: 10.1021/acs.orglett.8b01610] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A novel skeletal rearrangement involving a [1,5]-alkylthio group transfer/cyclization sequence is described. Treatment of benzylidene malonates having a thioketal moiety at the homobenzyl position with a catalytic amount of Sc(OTf)3 afforded alkylthio group rearranged adducts in good chemical yields. Detailed investigation of the reaction mechanism revealed that an intramolecular conjugate addition/ring opening sequence (not through-space transfer) is the key to achieving this reaction.
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Affiliation(s)
- Naoya Hisano
- Department of Applied Chemistry, Graduate School of Engineering , Tokyo University of Agriculture and Technology , 2-24-16 Nakacho , Koganei , Tokyo 184-8588 , Japan
| | - Yuto Kamei
- Department of Chemistry and Research Center for Smart Molecules , Rikkyo University , 3-34-1 Nishi-Ikebukuro , Toshima-ku, Tokyo 171-8501 , Japan
| | - Yaoki Kansaku
- Department of Chemistry and Research Center for Smart Molecules , Rikkyo University , 3-34-1 Nishi-Ikebukuro , Toshima-ku, Tokyo 171-8501 , Japan
| | - Masahiro Yamanaka
- Department of Chemistry and Research Center for Smart Molecules , Rikkyo University , 3-34-1 Nishi-Ikebukuro , Toshima-ku, Tokyo 171-8501 , Japan
| | - Keiji Mori
- Department of Applied Chemistry, Graduate School of Engineering , Tokyo University of Agriculture and Technology , 2-24-16 Nakacho , Koganei , Tokyo 184-8588 , Japan
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41
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Machida M, Mori K. Highly Diastereoselective Synthesis of Tetralin-fused Spirooxindoles via Lewis Acid-catalyzed C(sp3)–H Bond Functionalization. CHEM LETT 2018. [DOI: 10.1246/cl.180275] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Mizuki Machida
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Keiji Mori
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
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42
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Mori K, Isogai R, Kamei Y, Yamanaka M, Akiyama T. Chiral Magnesium Bisphosphate-Catalyzed Asymmetric Double C(sp3)–H Bond Functionalization Based on Sequential Hydride Shift/Cyclization Process. J Am Chem Soc 2018; 140:6203-6207. [DOI: 10.1021/jacs.8b02761] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Keiji Mori
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Ryo Isogai
- Department of Chemistry, Faculty of Science, Gakushuin University, Mejiro, Toshima-ku, Tokyo 171-8588, Japan
| | - Yuto Kamei
- Department of Chemistry and Research Center for Smart Molecules, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Masahiro Yamanaka
- Department of Chemistry and Research Center for Smart Molecules, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan
| | - Takahiko Akiyama
- Department of Chemistry, Faculty of Science, Gakushuin University, Mejiro, Toshima-ku, Tokyo 171-8588, Japan
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43
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Yoshida T, Mori K. Expeditious synthesis of multisubstituted indoles via multiple hydrogen transfers. Chem Commun (Camb) 2018; 54:12686-12689. [DOI: 10.1039/c8cc07009a] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Expeditious synthesis of multisubstituted indoles was achieved by multiple Lewis acid promoted hydrogen transfers.
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Affiliation(s)
- Taira Yoshida
- Department of Applied Chemistry
- Graduate School of Engineering
- Tokyo University of Agriculture and Technology
- Tokyo 184-8588
- Japan
| | - Keiji Mori
- Department of Applied Chemistry
- Graduate School of Engineering
- Tokyo University of Agriculture and Technology
- Tokyo 184-8588
- Japan
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44
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Chen C, Xu L, Wang L, Li SS. Efficient construction of tetrahydroquinolines via fluorinated alcohol mediated cascade [1,5]-hydride transfer/cyclization. Org Biomol Chem 2018; 16:7109-7114. [DOI: 10.1039/c8ob02012d] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
An environmentally benign cascade redox-neutral process was developed for the efficient construction of pharmaceutically important spirocyclic tetrahydroquinolines via a 3-step cascade Knoevenagel condensation/[1,5]-hydride transfer/cyclization.
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Affiliation(s)
- Chunqi Chen
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
| | - Lubin Xu
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
| | - Liang Wang
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
| | - Shuai-Shuai Li
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao 266109
- China
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45
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Xu L, Yang P, Wang L. Direct functionalization of benzylic and non-benzylic C(sp3)–H bonds via keteniminium ion initiated cascade [1,5]-hydrogen transfer/cyclization. Org Chem Front 2018. [DOI: 10.1039/c8qo00314a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Keteniminium intermediates generated in situ initiate the cascade [1,5]-hydride transfer/cyclization for the direct functionalization of benzylic and non-benzylic C(sp3)–H bonds.
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Affiliation(s)
- Lubin Xu
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao
- China
| | - Pengfei Yang
- School of Chemistry and Pharmaceutical Engineering
- Qilu University of Technology
- Jinan
- China
| | - Liang Wang
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao
- China
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46
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Yokoo K, Mori K. Divergent synthesis of CF3-substituted polycyclic skeletons based on control of activation site of acid catalysts. Chem Commun (Camb) 2018; 54:6927-6930. [DOI: 10.1039/c8cc02377h] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We report a divergent synthesis of CF3-substituted fused skeletons based on precise control of the activation site through the selection of acid catalysts.
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Affiliation(s)
- Kazuma Yokoo
- Department of Applied Chemistry
- Graduate School of Engineering
- Tokyo University of Agriculture and Technology
- Tokyo 184-8588
- Japan
| | - Keiji Mori
- Department of Applied Chemistry
- Graduate School of Engineering
- Tokyo University of Agriculture and Technology
- Tokyo 184-8588
- Japan
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47
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Yamazaki S, Naito T, Niina M, Kakiuchi K. Lewis Acid Catalyzed Cyclization Reactions of Ethenetricarboxylates via Intramolecular Hydride Transfer. J Org Chem 2017; 82:6748-6763. [DOI: 10.1021/acs.joc.7b00895] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shoko Yamazaki
- Department
of Chemistry, Nara University of Education, Department of Chemistry, Nara University of Education, Takabatake-cho, Nara 630-8528, Japan
| | - Taku Naito
- Department
of Chemistry, Nara University of Education, Department of Chemistry, Nara University of Education, Takabatake-cho, Nara 630-8528, Japan
| | - Mamiko Niina
- Department
of Chemistry, Nara University of Education, Department of Chemistry, Nara University of Education, Takabatake-cho, Nara 630-8528, Japan
| | - Kiyomi Kakiuchi
- Graduate
School of Materials Science, Nara Institute of Science and Technology (NAIST), Takayama,
Ikoma, Nara 630-0192, Japan
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48
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Kim YJ, Kim Y, Kim DY. Synthesis of Ring-fused Tetrahydroquinoline Derivatives via [1,5]-Hydride Transfer/Cyclization Sequences. B KOREAN CHEM SOC 2017. [DOI: 10.1002/bkcs.11126] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yeon Joo Kim
- Department of Chemistry; Soonchunhyang University; Chungnam 336-745 Korea
| | - Yubin Kim
- Department of Chemistry; Soonchunhyang University; Chungnam 336-745 Korea
| | - Dae Young Kim
- Department of Chemistry; Soonchunhyang University; Chungnam 336-745 Korea
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49
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Suh CW, Kwon SJ, Kim DY. Synthesis of Ring-Fused 1-Benzazepines via [1,5]-Hydride Shift/7-Endo Cyclization Sequences. Org Lett 2017; 19:1334-1337. [DOI: 10.1021/acs.orglett.7b00184] [Citation(s) in RCA: 88] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Chang Won Suh
- Department of Chemistry, Soonchunhyang University, Asan, Chungnam 31538, Korea
| | - Su Jin Kwon
- Department of Chemistry, Soonchunhyang University, Asan, Chungnam 31538, Korea
| | - Dae Young Kim
- Department of Chemistry, Soonchunhyang University, Asan, Chungnam 31538, Korea
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50
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Zhen L, Dai L, Yu SQ, Lin C, Sun H, Xu QL. Reaction Pathways through a [1,5]-Hydride Shift Triggered by Acids: Approach to Bridged-Ring Heterocycles and Polycycles. European J Org Chem 2017. [DOI: 10.1002/ejoc.201601319] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Le Zhen
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines; China Pharmaceutical University; 24 Tongjia Xiang 210009 Nanjing China
| | - Liang Dai
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines; China Pharmaceutical University; 24 Tongjia Xiang 210009 Nanjing China
| | - Sheng-Qi Yu
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines; China Pharmaceutical University; 24 Tongjia Xiang 210009 Nanjing China
| | - Chao Lin
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines; China Pharmaceutical University; 24 Tongjia Xiang 210009 Nanjing China
| | - Hongbin Sun
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines; China Pharmaceutical University; 24 Tongjia Xiang 210009 Nanjing China
| | - Qing-Long Xu
- Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases and State Key Laboratory of Natural Medicines; China Pharmaceutical University; 24 Tongjia Xiang 210009 Nanjing China
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