1
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Savekar AT, Gaikwad RA, Waghmode SB. Metal-Free Regioselective Oxa-Michael Approach to Access Spirooxindole-Fused Tetrahydrofuran/Tetrahydropyran through [3 + 2]/ [4 + 2] Spirocyclization of Methyleneindolinones with Haloalcohols. J Org Chem 2024. [PMID: 38913823 DOI: 10.1021/acs.joc.4c00659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
An efficient one-pot metal-free, base-catalyzed method has been developed for the regioselective [3 + 2]/[4 + 2] annulation reactions of electrophilic methyleneindolinones with haloalcohols to furnish spirooxindole derivatives under mild reaction conditions. This reaction afforded the corresponding products with two contiguous stereocenters including a quaternary center in good to excellent yield (up to 95%) with moderate to good diastereoselectivities (up to 12.5:1 dr) with complete regioselectivity.
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Affiliation(s)
- Amol T Savekar
- Department of Chemistry, Savitribai Phule Pune University (Formerly University of Pune), Ganeshkhind, Pune 411007, India
| | - Ramesh A Gaikwad
- Department of Chemistry, Savitribai Phule Pune University (Formerly University of Pune), Ganeshkhind, Pune 411007, India
| | - Suresh B Waghmode
- Department of Chemistry, Savitribai Phule Pune University (Formerly University of Pune), Ganeshkhind, Pune 411007, India
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2
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Pearson JW, Hou TR, Golijanin J, Stewart PI, Choi ES, Gabbey AL, West MS, Rousseaux SAL. Ni-Catalyzed Reductive 1,2-Alkylarylation of Alkenes for the Synthesis of Spirocyclic γ-Lactams. Org Lett 2024. [PMID: 38915176 DOI: 10.1021/acs.orglett.4c01981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
An intermolecular nickel-catalyzed reductive 1,2-alkylarylation of acrylates with cyclopropylamine NHP esters and aryl iodides is reported. This operationally simple protocol provides direct access to 1-alkylcyclopropylamine scaffolds. The mild conditions are compatible with four-membered α-amino strained rings as well as five- and six-membered ring systems. The products undergo cyclization to access α-arylated spirocyclic γ-lactams─a motif present in several pharmaceuticals.
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Affiliation(s)
- James W Pearson
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Teh Ren Hou
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Jelena Golijanin
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Patricia I Stewart
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Eun Seo Choi
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Alexis L Gabbey
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Michael S West
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Sophie A L Rousseaux
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
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3
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Hafeez S, Sharma R, Jain S, Sihag N, Bhartiya H, Singh J, Reddy SR, Yadav MR. Pd-Catalyzed Cascade Heck/C(sp 3)-H Activation for Spirocyclopropyl Oxindoles. Org Lett 2024; 26:5069-5073. [PMID: 38847514 DOI: 10.1021/acs.orglett.4c01017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/22/2024]
Abstract
We have demonstrated a Pd(0)-catalyzed Heck/C(sp3)-H activation cascade for the synthesis of spirocyclopropyl oxindoles in high yields from easily accessible ortho-bromoacrylamides. The formation of spirocyclopropyl oxindole is guided by an unconventional four-membered palladacycle through C(sp3)-H activation. The reaction exhibits a wide range of substrate scope and operates efficiently with a mere 0.5 mol % of Pd-catalyst. In addition, the use of microwave conditions facilitates rapid completion of the reaction. Furthermore, this spirocyclopropanation strategy can be coupled with [3 + 2] cycloaddition to produce spiropyrrolidine oxindoles, offering a valuable approach for the preparation of alkaloids such as (±)-horsfiline and (±)-coerulescine.
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Affiliation(s)
- Saleem Hafeez
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Ruchi Sharma
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Swati Jain
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Naveen Sihag
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Hemaang Bhartiya
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Jitendra Singh
- Department of Chemistry, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, NH-8, Bandarsindri, Ajmer, Rajasthan 305817, India
| | - S Rajagopala Reddy
- Department of Chemistry, School of Chemical Sciences and Pharmacy, Central University of Rajasthan, NH-8, Bandarsindri, Ajmer, Rajasthan 305817, India
| | - M Ramu Yadav
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
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4
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Zheng WH, Lv JF, He SM, Yu N, Zhou YQ, Yang YB, Liu LY, He KC, Wei Y, Jiang K. Relay Annulation of Ammonium Ylides with Oxindole-Derived α,β-Unsaturated Ketimines: Catalytic Construction of Spiro-polycyclic Oxindoles. Org Lett 2024; 26:5115-5119. [PMID: 38862412 DOI: 10.1021/acs.orglett.4c01442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2024]
Abstract
An ammonium ylide-based relay annulation was disclosed, which uses DABCO as the catalyst and oxindole-derived α,β-unsaturated ketimines and γ-bromo-crotonates as the starting materials. This method enables the rapid assembly of a series of structurally novel spiro-polycyclic oxindoles containing a bicyclo[4.1.0]heptane moiety through simultaneous generation of three new bonds and two rings in one step under mild reaction conditions.
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Affiliation(s)
- Wei-Hao Zheng
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Jing-Fang Lv
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Shi-Mei He
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Ning Yu
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Yu-Qiang Zhou
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Yun-Bo Yang
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Lv-Yan Liu
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Kui-Cheng He
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Ye Wei
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
| | - Kun Jiang
- Key Laboratory of Applied Chemistry of Chongqing Municipality, School of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, China
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5
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Song JY, Sun XY, Wang BL, Zhou SS, Song JX, Zhang BH, Wang XW. COAP-Pd Catalyzed Asymmetric Formal [3+2] Cycloaddition for Optically Active Multistereogenic Spiro Cyclopentane-Indandiones Bearing Cyclic N-Sulfonyl Ketimine Skeletons. Chem Asian J 2024; 19:e202400184. [PMID: 38628038 DOI: 10.1002/asia.202400184] [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: 02/20/2024] [Revised: 04/09/2024] [Indexed: 05/21/2024]
Abstract
We reported a chiral oxamide-phosphine ligand (COAP-Ph)-Pd-catalyzed asymmetric [3+2] cycloaddition reaction between vinyl cyclopropane compounds derived from 1,3-indanedione and 2-vinylcyclopropane-1,1-dicarboxylates with cyclic sulfonyl 1-azadienes. The corresponding reactions provided a series of enantiomerically active spiro cyclopentane-indandione and cyclopentane structures bearing three consecutive stereogenic centers in good yields with good diastereo- and enantioselectivity. The COAP-Pd complex serves not only to promote generation of chiral π-allyl-palladium intermediates and induce the asymmetry of the reaction, but also depress the background reaction.
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Affiliation(s)
- Jia-Yu Song
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou Industrial Park, Suzhou, 215123, P. R. China
| | - Xing-Yun Sun
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou Industrial Park, Suzhou, 215123, P. R. China
| | - Bai-Lin Wang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou Industrial Park, Suzhou, 215123, P. R. China
| | - Sheng-Suo Zhou
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou Industrial Park, Suzhou, 215123, P. R. China
| | - Jia-Xin Song
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou Industrial Park, Suzhou, 215123, P. R. China
| | - Bu-Hong Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou Industrial Park, Suzhou, 215123, P. R. China
| | - Xing-Wang Wang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou Industrial Park, Suzhou, 215123, P. R. China
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6
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Peng TF, Liu P, Guo YX, Chen MH, Tong MT, Peng DX, Yang ZT, Zhao R, Shen X, Liu JJ, Cheng FX, Shen XF. Enantioselective formal total synthesis of dihydrospirotryprostatin B. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2024:1-17. [PMID: 38829012 DOI: 10.1080/10286020.2024.2355504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 05/10/2024] [Indexed: 06/05/2024]
Abstract
Spirotryprostatins are representative members of medicinally interesting bioactive molecules of the spirooxindole natural products. In this communication, we present a novel enantioselective total synthesis of the spirooxindole alkaloid dihydrospirotryprostatin B. The synthesis takes advantage of copper-catalyzed tandem reaction of o-iodoanilide chiral sulfinamide derivatives with alkynone to rapidly construct the key quaternary carbon stereocenter of the natural product dihydrospirotryprostatin B.
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Affiliation(s)
- Tian-Feng Peng
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing 655011, China
| | - Peng Liu
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing 655011, China
| | - Yu-Xin Guo
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing 655011, China
| | - Meng-Hua Chen
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing 655011, China
| | - Man-Ting Tong
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing 655011, China
| | - Deng-Xian Peng
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing 655011, China
| | - Zhen-Ting Yang
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing 655011, China
| | - Rou Zhao
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing 655011, China
| | - Xiang Shen
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing 655011, China
| | - Jian-Jun Liu
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing 655011, China
| | - Fei-Xiang Cheng
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing 655011, China
| | - Xian-Fu Shen
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing 655011, China
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7
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Wang JJ, Tang L, Xiao Y, Wu WB, Wang G, Feng JJ. Switching between the [2π+2σ] and Hetero-[4π+2σ] Cycloaddition Reactivity of Bicyclobutanes with Lewis Acid Catalysts Enables the Synthesis of Spirocycles and Bridged Heterocycles. Angew Chem Int Ed Engl 2024:e202405222. [PMID: 38729920 DOI: 10.1002/anie.202405222] [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: 03/16/2024] [Revised: 05/01/2024] [Accepted: 05/10/2024] [Indexed: 05/12/2024]
Abstract
The exploration of the complex chemical diversity of bicyclo[n.1.1]alkanes and their use as benzene bioisosteres has garnered significant attention over the past two decades. Regiodivergent syntheses of thiabicyclo[4.1.1]octanes (S-BCOs) and highly substituted bicyclo[2.1.1]hexanes (BCHs) using a Lewis acid-catalyzed formal cycloaddition of bicyclobutanes (BCBs) and 3-benzylideneindoline-2-thione derivatives have been established. The first hetero-(4+3) cycloaddition of BCBs, catalyzed by Zn(OTf)2, was achieved with a broad substrate scope under mild conditions. In contrast, the less electrophilic BCB ester undergoes a Sc(OTf)3-catalyzed [2π+2σ] reaction with 1,1,2-trisubstituted alkenes, yielding BCHs with a spirocyclic quaternary carbon center. Control experiments and preliminary theoretical calculations suggest that the diastereoselective [2π+2σ] product formation may involve a concerted cycloaddition between a zwitterionic intermediate and E-1,1,2-trisubstituted alkenes. Additionally, the hetero-(4+3) cycloaddition may involve a concerted nucleophilic ring-opening mechanism.
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Affiliation(s)
- Ji-Jie Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan, 410082, P. R. China
| | - Lei Tang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan, 410082, P. R. China
| | - Yuanjiu Xiao
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan, 410082, P. R. China
| | - Wen-Biao Wu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan, 410082, P. R. China
| | - Guoqiang Wang
- Institute of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China
| | - Jian-Jun Feng
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan, 410082, P. R. China
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8
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Dhameliya TM, Vekariya DD, Bhatt PR, Kachroo T, Virani KD, Patel KR, Bhatt S, Dholakia SP. Synthetic account on indoles and their analogues as potential anti-plasmodial agents. Mol Divers 2024:10.1007/s11030-024-10842-8. [PMID: 38709459 DOI: 10.1007/s11030-024-10842-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 03/07/2024] [Indexed: 05/07/2024]
Abstract
Malaria caused by P. falciparum, has been recognized as one of the major infectious diseases causing the death of several patients as per the reports from the World Health Organization. In search of effective therapeutic agents against malaria, several research groups have started working on the design and development of novel heterocycles as anti-malarial agents. Heterocycles have been recognized as the pharmacophoric features for the different types of medicinally important activities. Among all these heterocycles, nitrogen containing aza-heterocycles should not be underestimated owing to their wide therapeutic window. Amongst the aza-heterocycles, indoles and fused indoles such as marinoquinolines, isocryptolepines and their regioisomers, manzamines, neocryptolenines, and indolones have been recognized as anti-malarial agents active against P. falciparum. The present work unleashes the synthetic attempts of anti-malarial indoles and fused indoles through cyclocondensation, Fischer-indole synthesis, etc. along with the brief discussions on structure-activity relationships, in vitro or in vivo studies for the broader interest of these medicinal chemists, working on their design and development as potential anti-malarial agents.
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Affiliation(s)
- Tejas M Dhameliya
- Department of Pharmaceutical Chemistry and Quality Assurance, L. M. College of Pharmacy, Navrangpura, Ahmedabad, 380 009, Gujarat, India.
- Present Address: Department of Pharmaceutical Chemistry, Institute of Pharmacy, Nirma University, Ahmedabad, 382481, Gujarat, India.
| | - Drashtiben D Vekariya
- Department of Pharmaceutical Chemistry and Quality Assurance, L. M. College of Pharmacy, Navrangpura, Ahmedabad, 380 009, Gujarat, India
| | - Pooja R Bhatt
- Department of Pharmaceutical Chemistry and Quality Assurance, L. M. College of Pharmacy, Navrangpura, Ahmedabad, 380 009, Gujarat, India
| | - Tarun Kachroo
- Department of Pharmaceutical Chemistry and Quality Assurance, L. M. College of Pharmacy, Navrangpura, Ahmedabad, 380 009, Gujarat, India
| | - Kumkum D Virani
- Department of Pharmaceutical Chemistry and Quality Assurance, L. M. College of Pharmacy, Navrangpura, Ahmedabad, 380 009, Gujarat, India
| | - Khushi R Patel
- Department of Pharmaceutical Chemistry and Quality Assurance, L. M. College of Pharmacy, Navrangpura, Ahmedabad, 380 009, Gujarat, India
| | - Shelly Bhatt
- Department of Pharmaceutical Chemistry and Quality Assurance, L. M. College of Pharmacy, Navrangpura, Ahmedabad, 380 009, Gujarat, India
| | - Sandip P Dholakia
- Department of Pharmaceutical Chemistry and Quality Assurance, L. M. College of Pharmacy, Navrangpura, Ahmedabad, 380 009, Gujarat, India
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Rahimizadeh F, Mazloumi M, Shirini F. An efficient catalysis for the synthesis of pyrimido[1,2- a]benzimidazoles and 1-(benzothiazolylamino)methyl-2-naphthols using ZnO@SO 3H@Tropine. RSC Adv 2024; 14:13452-13462. [PMID: 38665495 PMCID: PMC11043802 DOI: 10.1039/d3ra08960f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Accepted: 03/30/2024] [Indexed: 04/28/2024] Open
Abstract
In this research and in the line of our researches on the use of nano-substrates modified with ionic liquid in organic reactions, an efficient and green method for the one-pot three-component synthesis of pyrimido[1,2-a]benzimidazole and 1-(benzothiazolylamino)methyl-2-naphthol derivatives is reported using a new nanoporous catalyst formulated as ZnO@SO3H@Tropine. Further analysis of the catalyst for its characterization has been performed using thermal gravimetric analysis (TGA), field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), energy dispersive spectrometer (EDS) and Fourier-transform infrared spectroscopy (FT-IR). The present approach creates a variety of biologically active heterocyclic compounds with excellent yields and short reaction times. Among the other advantages of the current method are: ease of operation, clean reaction profiles and ease of separation. Also, this catalyst can be reused five times without loss of its catalytic activity.
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Affiliation(s)
- Fatemeh Rahimizadeh
- Department of Chemistry, College of Science, University of Guilan Rasht 41335-19141 Iran +98 131 3233262 +98 131 3233262
| | - Masoumeh Mazloumi
- Department of Chemistry, College of Science, University of Guilan Rasht 41335-19141 Iran +98 131 3233262 +98 131 3233262
| | - Farhad Shirini
- Department of Chemistry, College of Science, University of Guilan Rasht 41335-19141 Iran +98 131 3233262 +98 131 3233262
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10
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Liu S, Yang YC, Yang YQ, Li X, Wang P, Li YL, Deng J. Asymmetric Tandem Michael Addition/Interrupted Nef Reactions of Nitromethane with Oxindole-Derived Alkenes: Enantioselective Synthesis of Spiro-polycyclic Oxindoles. Org Lett 2024; 26:3279-3283. [PMID: 38578864 DOI: 10.1021/acs.orglett.4c00919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2024]
Abstract
Chiral spiro-polycyclic oxindoles are valuable heterocyclic ring systems that are widely distributed in natural alkaloids and biologically active compounds. Herein, we reported an asymmetric tandem Michael addition/interrupted Nef reaction of nitromethane with oxindole-derived alkenes catalyzed by a chiral 2-aminobenzimidazole bifunctional organocatalyst. A series of novel enantiomerically enriched spiro-polycyclic oxindole derivatives bearing an oxime group were synthesized in moderate to excellent isolated yields (up to 99%) with an excellent level of enantioselectivities (up to 99% ee). Furthermore, the antiproliferation activity of the resulting oxindoles derivatives were evaluated, and compound 2d demonstrated promising anticancer properties against HCT116 (IC50 = 14.08 μM) and HT29 (IC50 = 15.46 μM) cell lines.
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Affiliation(s)
- Shengshu Liu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Yu-Chen Yang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Yong-Qi Yang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Xin Li
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Pengfei Wang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Yin-Long Li
- Department of Radiology and Imaging Sciences, Emory University, 1364 Clifton Rd, Atlanta 30322, Georgia, United States
| | - Jun Deng
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
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11
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Hu J, Niu ZX, Wang JF. Recent Advances in the Total Synthesis of Spirotryprostatin Alkaloids. Molecules 2024; 29:1655. [PMID: 38611934 PMCID: PMC11013222 DOI: 10.3390/molecules29071655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 03/27/2024] [Accepted: 04/03/2024] [Indexed: 04/14/2024] Open
Abstract
Spirotryprostatin alkaloids, a class of alkaloids with a unique spirocyclic indoledionepiperazine structure, were first extracted from the fermentation broth of Aspergillus fumigatus and have garnered significant attention in the fields of biology and pharmacology. The investigation into the pharmacological potential of this class of alkaloids has unveiled promising applications in drug discovery and development. Notably, certain spirotryprostatin alkaloids have demonstrated remarkable anti-cancer activity, positioning them as potential candidates for anti-tumor drug development. In recent years, organic synthetic chemists have dedicated efforts to devise efficient and viable strategies for the total synthesis of spirotryprostatin alkaloids, aiming to meet the demands within the pharmaceutical domain. The construction of the spiro-C atom within the spirotryprostatin scaffold and the chirality control at the spiro atomic center emerge as pivotal aspects in the synthesis of these compounds. This review categorically delineates the synthesis of spirotryprostatin alkaloids based on the formation mechanism of the spiro-C atom.
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Affiliation(s)
- Jing Hu
- Children’s Hospital Affiliated to Zhengzhou University, Henan Children’s Hospital, Zhengzhou Children’s Hospital, Zhengzhou 450018, China
| | - Zhen-Xi Niu
- Children’s Hospital Affiliated to Zhengzhou University, Henan Children’s Hospital, Zhengzhou Children’s Hospital, Zhengzhou 450018, China
| | - Jun-Feng Wang
- Gordon Center for Medical Imaging, Massachusetts General Hospital and Harvard Medical School, 125 Nashua Street, Suite 660, Boston, MA 02114, USA
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12
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Zhou Q, Li B, Zhang X, Fan X. C-H activation-initiated spiroannulation reactions and their applications in the synthesis of spirocyclic compounds. Org Biomol Chem 2024; 22:2324-2338. [PMID: 38391295 DOI: 10.1039/d3ob02056h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2024]
Abstract
Spirocyclic skeletons are prevalent in natural products, pharmaceuticals and organic functional materials. Meanwhile, transition-metal-catalyzed C-H activation reactions have demonstrated unparalleled advantages such as high efficiency, excellent atom-economy, good chemoselectivity and regioselectivity for the formation of target organic molecules. In recent years, C-H activation reactions have been creatively utilized in the synthesis of spirocyclic compounds. This review summarizes the most recent progress made in C-H activation-initiated spiroannulation reactions and their applications in the construction of structurally diverse and biologically valuable spirocyclic scaffolds by using alkynes, diazo compounds, maleimides, alkenes, quinones and cyclopropenones as the coupling partners.
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Affiliation(s)
- Qianting Zhou
- State Key Laboratory of Antiviral Drugs, Pingyuan Laboratory, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China.
| | - Bin Li
- State Key Laboratory of Antiviral Drugs, Pingyuan Laboratory, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China.
| | - Xinying Zhang
- State Key Laboratory of Antiviral Drugs, Pingyuan Laboratory, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China.
| | - Xuesen Fan
- State Key Laboratory of Antiviral Drugs, Pingyuan Laboratory, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China.
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13
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Boddy A, Sahay AK, Rivers EL, White AJP, Spivey AC, Bull JA. Enantioselective Phase-Transfer-Catalyzed Synthesis of Spirocyclic Azetidine Oxindoles. Org Lett 2024; 26:2079-2084. [PMID: 38447584 PMCID: PMC10949229 DOI: 10.1021/acs.orglett.4c00358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 02/28/2024] [Accepted: 03/04/2024] [Indexed: 03/08/2024]
Abstract
Spiro-3,2'-azetidine oxindoles combine two independently important pharmacophores in an understudied spirocyclic motif that is attractive for medicinal chemistry. Here, the enantioselective synthesis of these structures is achieved in up to 2:98 er through intramolecular C-C bond formation, involving activation of the substrate with a novel SF5-containing chiral cation phase-transfer (PT) catalyst. The products are readily elaborated/deprotected to afford medicinally relevant enantioenriched compounds. Control experiments suggest an interfacial PT mechanism, whereby catalytic asymmetric induction is achieved through the activation of the chloride leaving group.
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Affiliation(s)
- Alexander
J. Boddy
- Department
of Chemistry, Imperial College London, Molecular
Sciences Research Hub, White City Campus, Wood Lane, London W12 0BZ, U.K.
| | - Aditya K. Sahay
- Department
of Chemistry, Imperial College London, Molecular
Sciences Research Hub, White City Campus, Wood Lane, London W12 0BZ, U.K.
| | - Emma L. Rivers
- Hit
Discovery, Discovery Sciences, R&D, AstraZeneca, Cambridge, U.K.
| | - Andrew J. P. White
- Department
of Chemistry, Imperial College London, Molecular
Sciences Research Hub, White City Campus, Wood Lane, London W12 0BZ, U.K.
| | - Alan C. Spivey
- Department
of Chemistry, Imperial College London, Molecular
Sciences Research Hub, White City Campus, Wood Lane, London W12 0BZ, U.K.
| | - James A. Bull
- Department
of Chemistry, Imperial College London, Molecular
Sciences Research Hub, White City Campus, Wood Lane, London W12 0BZ, U.K.
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14
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Lin J, Jia M, Song X, Yu H, Ma S. Pd-Catalyzed Enantioselective Creation of All-Carbon Quaternary Center with 2,3-Allenylic Carbonates. Org Lett 2024. [PMID: 38489519 DOI: 10.1021/acs.orglett.2c02497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2024]
Abstract
Enantioselective construction of all-carbon quaternary centers has been achieved via the palladium-catalyzed highly enantioselective allenylation of oxindoles with 2,3-allenylic carbonates to afford a variety of optically active allene products, which contain oxindole units with different functional groups, in high ee. The corresponding synthetic applications have also been demonstrated.
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Affiliation(s)
- Jie Lin
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University, 220 Handan Lu, Shanghai 200433, P. R. China
| | - Minqiang Jia
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University, 220 Handan Lu, Shanghai 200433, P. R. China
| | - Xu Song
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University, 220 Handan Lu, Shanghai 200433, P. R. China
| | - Hao Yu
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University, 220 Handan Lu, Shanghai 200433, P. R. China
| | - Shengming Ma
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University, 220 Handan Lu, Shanghai 200433, P. R. China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, P. R. China
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15
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Das K, Pedada A, Singha T, Hari DP. Strain-enabled radical spirocyclization cascades: rapid access to spirocyclobutyl lactones and - lactams. Chem Sci 2024; 15:3182-3191. [PMID: 38425517 PMCID: PMC10901517 DOI: 10.1039/d3sc05700c] [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: 10/25/2023] [Accepted: 12/20/2023] [Indexed: 03/02/2024] Open
Abstract
Spirocyclobutane derivatives have gained significant attention in drug discovery programs due to their broad spectrum of biological activities and clinical applications. Ring-strain in organic molecules is a powerful tool to promote reactivity by releasing strain energy, allowing the construction of complex molecules selectively and efficiently. Herein, we report the first strain-enabled radical spirocyclization cascades for the synthesis of functionalized spirocyclobutyl lactones and - lactams, which are finding increasing applications in medicinal chemistry. The reaction of interelement compounds with bicyclobutane (BCB) allyl esters and - amides proceeds with high chemoselectivity under simple, catalyst-free conditions using blue light irradiation. The reaction has been successfully extended to synthesize bis-spirocycles. To introduce a more diverse set of functional groups, we have developed a dual photoredox/nickel catalytic system capable of mediating the carbosulfonylation of BCB allyl amides. The reaction shows broad applicability across various (hetero)aryl halides, aryl sulfinates, and BCB allyl amides, operates under mild conditions and demonstrates excellent functional group compatibility. The functional groups introduced during the cascade reactions served as versatile handles for further synthetic elaboration.
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Affiliation(s)
- Kousik Das
- Department of Organic Chemistry, Indian Institute of Science Bangalore India 560012
| | - Abhilash Pedada
- Department of Organic Chemistry, Indian Institute of Science Bangalore India 560012
| | - Tushar Singha
- Department of Organic Chemistry, Indian Institute of Science Bangalore India 560012
| | - Durga Prasad Hari
- Department of Organic Chemistry, Indian Institute of Science Bangalore India 560012
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16
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Song JR, Li XJ, Shi J, Chi Q, Wu W, Ren H. Direct synthesis of N-functionalized indoles through isomerization of azomethine ylides. Org Biomol Chem 2024; 22:741-744. [PMID: 38170630 DOI: 10.1039/d3ob01393f] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
An unexpected isomerization of azomethine ylides generated in situ from isatin with indoline-2-carboxylic acid has been disclosed, providing direct access to N-functionalized indole scaffolds. This protocol has good functional group tolerance and provides various 3-(1H-indol-1-yl)indolin-2-one derivatives in moderate to high yields simply by using alcohol as the solvent, with no additional additive being required.
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Affiliation(s)
- Jun-Rong Song
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, P. R. China.
- The Natural Products Research Center of Guizhou Province, Guiyang 550014, P. R. China
| | - Xiong-Jiang Li
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, P. R. China.
- The Natural Products Research Center of Guizhou Province, Guiyang 550014, P. R. China
| | - Jun Shi
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, P. R. China.
- The Natural Products Research Center of Guizhou Province, Guiyang 550014, P. R. China
| | - Qin Chi
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, P. R. China.
- The Natural Products Research Center of Guizhou Province, Guiyang 550014, P. R. China
| | - Wei Wu
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, P. R. China.
- The Natural Products Research Center of Guizhou Province, Guiyang 550014, P. R. China
| | - Hai Ren
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, P. R. China.
- The Natural Products Research Center of Guizhou Province, Guiyang 550014, P. R. China
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17
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Sun Z, Hou R, Li SS, Wang X, Wang L, Hu F, Guo FW. Controllable Synthesis of N- and O-Containing Heterocycles via Formal [3 + 2] and [5 + 2] Cyclizations. Org Lett 2024; 26:6-11. [PMID: 38157254 DOI: 10.1021/acs.orglett.3c03227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
The controllable synthesis of spirooxindole-dihydrofurans and spirooxindole-benzazepines was developed through formal [3 + 2] and [5 + 2] cyclization reactions from 2-(2-oxoindolin-3-yl)malononitriles and ortho-aminobenzaldehydes, respectively. A variety of spirooxindole-benzazepines were facilely constructed via a furan ring-open-involved hydride transfer/cyclization process. It is noteworthy that the application of the hydride-transfer-involved [5 + 2] cyclization strategy for construction of spirobenzazepines was unprecedented. In addition, the spiro N- and O-containing heterocycles were highly functionalized by amino, amide, and cyano groups, which were conducive to late-stage functionalization.
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Affiliation(s)
- Zhipeng Sun
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, 700 Changcheng Road, Qingdao, Shandong 266109, People's Republic of China
| | - Ranran Hou
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, 700 Changcheng Road, Qingdao, Shandong 266109, People's Republic of China
| | - Shuai-Shuai Li
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, 700 Changcheng Road, Qingdao, Shandong 266109, People's Republic of China
| | - Xinyu Wang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, 700 Changcheng Road, Qingdao, Shandong 266109, People's Republic of China
| | - Liang Wang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, 700 Changcheng Road, Qingdao, Shandong 266109, People's Republic of China
| | - Fangzhi Hu
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, 700 Changcheng Road, Qingdao, Shandong 266109, People's Republic of China
| | - Feng-Wei Guo
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, 700 Changcheng Road, Qingdao, Shandong 266109, People's Republic of China
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18
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Han JW, Kim Y, Kim SG. Organocatalytic Asymmetric [4 + 2]-Cycloadditions of 2-Aminophenyl Enones with Isatin-Derived Ketimines: Diastereo- and Enantioselective Synthesis of Spirooxindole-Tetrahydroquinazolines. Org Lett 2024; 26:252-257. [PMID: 38147651 DOI: 10.1021/acs.orglett.3c03918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
A novel method for the enantioselective synthesis of spiro N,N-heterocyclic oxindoles has been developed, employing asymmetric [4 + 2]-cycloadditions of 2-aminophenyl enones with isatin-derived ketimines. This method employs an organocatalytic approach, utilizing a bifunctional squaramide-based catalyst. It enables the precise synthesis of chiral spirooxindole-tetrahydroquinazolines with intricate structures, featuring chiral quaternary centers. This process achieves remarkable results, including high yields and exceptional levels of enantioselectivity and diastereoselectivity (up to 96% yield, 95% ee, and >20:1 dr).
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Affiliation(s)
- Ji Won Han
- Department of Chemistry, College of Natural Science, Kyonggi University, 154-42, Gwanggyosan-ro, Yeongtong-gu, Suwon, 16227, Republic of Korea
| | - Yoseop Kim
- Department of Chemistry, College of Natural Science, Kyonggi University, 154-42, Gwanggyosan-ro, Yeongtong-gu, Suwon, 16227, Republic of Korea
| | - Sung-Gon Kim
- Department of Chemistry, College of Natural Science, Kyonggi University, 154-42, Gwanggyosan-ro, Yeongtong-gu, Suwon, 16227, Republic of Korea
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19
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Zhou FJ, Zhu BL, Huang ZH, Lin N, Zhang ZW. DBU-catalyzed diastereoselective 1,3-dipolar [3+2] cycloaddition of trifluoroethyl amine-derived isatin ketimines with chalcones: synthesis of 5'-CF 3-substituted 3,2'-pyrrolidinyl spirooxindoles. RSC Adv 2024; 14:548-551. [PMID: 38173620 PMCID: PMC10759033 DOI: 10.1039/d3ra08127c] [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: 11/28/2023] [Accepted: 12/11/2023] [Indexed: 01/05/2024] Open
Abstract
A diastereoselective 1,3-dipolar cycloaddition reaction between trifluoroethyl amine-derived isatin ketimines and chalcones was successfully achieved in the presence of DBU. A series of 5'-CF3-substituted 3,2'-pyrrolidinyl spirooxindoles were efficiently synthesized with high yields and excellent diastereoselectivities (up to 89% yield, and >99 : 1 dr). The in vitro anticancer activities of these highly functionalized spiro[pyrrolidin-3,2'-oxindole] derivatives were evaluated.
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Affiliation(s)
- Feng-Ji Zhou
- College of Pharmacy, Guangxi University of Chinese Medicine, Guangxi Zhuang Yao Medicine Center of Engineering and Technology Nanning 530200 China
| | - Bao-Lei Zhu
- College of Pharmacy, Guangxi University of Chinese Medicine, Guangxi Zhuang Yao Medicine Center of Engineering and Technology Nanning 530200 China
| | - Zhen-Hui Huang
- College of Pharmacy, Guangxi University of Chinese Medicine, Guangxi Zhuang Yao Medicine Center of Engineering and Technology Nanning 530200 China
| | - Ning Lin
- College of Pharmacy, Guangxi University of Chinese Medicine, Guangxi Zhuang Yao Medicine Center of Engineering and Technology Nanning 530200 China
| | - Zhen-Wei Zhang
- College of Pharmacy, Guangxi University of Chinese Medicine, Guangxi Zhuang Yao Medicine Center of Engineering and Technology Nanning 530200 China
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20
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Wu J, Liu X, Zhang J, Yao J, Cui X, Tang Y, Xi Z, Han M, Tian H, Chen Y, Fan Q, Li W, Kong D. Green synthesis and anti-tumor efficacy via inducing pyroptosis of novel 1H-benzo[e]indole-2(3H)-one spirocyclic derivatives. Bioorg Chem 2024; 142:106930. [PMID: 37890212 DOI: 10.1016/j.bioorg.2023.106930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Revised: 10/06/2023] [Accepted: 10/19/2023] [Indexed: 10/29/2023]
Abstract
Pyroptosis induction is anticipated to be a new approach to developing anti-tumor medications. A novel class of spirocyclic compounds was designed by hybridization of 1H-Benzo[e]indole-2(3H)-one with 1,4-dihydroquinoline and synthesized through a new green "one-pot" synthesis method using 10 wt% SDS/H2O as a solvent to screen novel tumor cell pyroptosis inducers. The anti-tumor activity of all compounds in vitro was determined by the MTT method, and a fraction of the compounds showed good cell growth inhibitory activity. The quantitative structure-activity relationship models of the compounds were established by artificial intelligence random forest algorithm (R2 = 0.9656 and 0.9747). The ideal compound A9 could, in a concentration-dependent manner, prevent ovarian cancer cells from forming colonies, migrating, and invading. Furthermore, A9 could significantly induce pyroptosis and upregulate the expression of pyroptosis-related proteins GSDME-N, in addition to inducing apoptosis and mediating the expression of apoptosis-related proteins in ovarian cancer cells. A9 (5 mg/kg) significantly reduced tumor volume and weight of ovarian cancer in vivo, decreased caspase-3 expression in tumor tissue, and induced the production of GSDME-N. This study provides a green and efficient atom-economic synthesis method for 1H-Benzo[e]indole-2(3H)-one spirocyclic derivatives and a promising pyroptosis inducer with anti-tumor activity.
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Affiliation(s)
- Jianzhang Wu
- The Eye Hospital, School of Ophthalmology & Optometry, Wenzhou Medical University, Wenzhou 325027, China; Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Provincial Key Laboratory for Research and Development of Tropical Herbs, Haikou Key Laboratory of Li Nationality Medicine, School of Pharmacy, Hainan Medical University, Haikou 571199, Hainan, China; Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou, Zhejiang 325000, China.
| | - Xin Liu
- School of Pharmaceutical Sciences, Wenzhou Medical Universtiy, Wenzhou, Zhejiang 325035, China
| | - Jie Zhang
- School of Pharmaceutical Sciences, Wenzhou Medical Universtiy, Wenzhou, Zhejiang 325035, China
| | - Jiali Yao
- School of Pharmaceutical Sciences, Wenzhou Medical Universtiy, Wenzhou, Zhejiang 325035, China
| | - Xiaolin Cui
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Provincial Key Laboratory for Research and Development of Tropical Herbs, Haikou Key Laboratory of Li Nationality Medicine, School of Pharmacy, Hainan Medical University, Haikou 571199, Hainan, China
| | - Yaling Tang
- School of Pharmaceutical Sciences, Wenzhou Medical Universtiy, Wenzhou, Zhejiang 325035, China
| | - Zixuan Xi
- The 1th Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, China
| | - Meiting Han
- School of Pharmaceutical Sciences, Wenzhou Medical Universtiy, Wenzhou, Zhejiang 325035, China
| | - Haoyu Tian
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Provincial Key Laboratory for Research and Development of Tropical Herbs, Haikou Key Laboratory of Li Nationality Medicine, School of Pharmacy, Hainan Medical University, Haikou 571199, Hainan, China
| | - Yan Chen
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Provincial Key Laboratory for Research and Development of Tropical Herbs, Haikou Key Laboratory of Li Nationality Medicine, School of Pharmacy, Hainan Medical University, Haikou 571199, Hainan, China
| | - Qiyun Fan
- School of Pharmaceutical Sciences, Wenzhou Medical Universtiy, Wenzhou, Zhejiang 325035, China
| | - Wulan Li
- The 1th Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, China.
| | - Dulin Kong
- The Eye Hospital, School of Ophthalmology & Optometry, Wenzhou Medical University, Wenzhou 325027, China; Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Provincial Key Laboratory for Research and Development of Tropical Herbs, Haikou Key Laboratory of Li Nationality Medicine, School of Pharmacy, Hainan Medical University, Haikou 571199, Hainan, China; Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou, Zhejiang 325000, China.
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21
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Yuan H, Wu YZ, Fang YH, Chen CH, Liang C, Mo DL. Synthesis of Spirooxindole-1,2-oxazinan-5-ones through 2,2,2-Trifluoroethanol Promoted [3 + 3] Cycloaddition of N-Vinyl Oxindole Nitrones and Oxyallyl Cations. J Org Chem 2023; 88:16155-16166. [PMID: 37975833 DOI: 10.1021/acs.joc.3c01477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
A variety of spirooxindole-1,2-oxazinan-5-one derivatives were prepared in moderate to excellent yields through 2,2,2-trifluoroethanol (TFE)-promoted [3 + 3] cycloaddition of N-vinyl oxindole nitrones with oxyallyl cations generated from α-tosyloxy ketones under mild reaction conditions. Mechanistic studies revealed that [3 + 3] cycloaddition might involve two possible reaction pathways, including direct [3 + 3] cycloaddition of N-vinyl oxindole ntirones with oxyallyl cations, or the addition of TFE to N-vinyl oxindole nitrones, sequential addition to oxyallyl cations, elimination, and cyclization. The present method features mild reaction conditions, broad substrate scope, good functional group tolerance, easy gram scalable preparation, and new applications of TFE.
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Affiliation(s)
- Hao Yuan
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin 541004, China
| | - Yu-Zheng Wu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin 541004, China
| | - Yu-Han Fang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin 541004, China
| | - Chun-Hua Chen
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commision, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530008, China
| | - Cui Liang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin 541004, China
| | - Dong-Liang Mo
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, 15 Yu Cai Road, Guilin 541004, China
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22
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Dong X, Liu X, Wang L, Zhang Y, Li J, Tian L, Zhao Y. Catalyst-Free gem-Difluorination/Spirocyclization of Indole-2-carboxamides: Synthesis of C2-Spiroindoline Derivatives. Org Lett 2023. [PMID: 38014899 DOI: 10.1021/acs.orglett.3c03906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
A catalyst-free gem-difluorination/spirocyclization reaction has been successfully developed for the synthesis of gem-difluorinated C2-spiroindoline derivatives from indole-2-carboxamides. The resulting gem-difluorinated C2-spiroindolines can be easily converted into 2-spiropseudoindoxyls through hydrolysis. This method offers the benefits of simple operation, convenient access to raw materials, and mild conditions. Dual function of Selectfluor in this reaction is noteworthy as it can serve as both a fluorinating agent and an alkaline accelerator precursor.
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Affiliation(s)
- Xiaotong Dong
- Key Laboratory of Life-Organic Analysis of Shandong Province, Key Laboratory of Green Natural Products and Pharmaceutical Intermediates in Universities of Shandong Province, Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu City, Shandong Province 273165, P. R. China
| | - Xiaonuo Liu
- Key Laboratory of Life-Organic Analysis of Shandong Province, Key Laboratory of Green Natural Products and Pharmaceutical Intermediates in Universities of Shandong Province, Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu City, Shandong Province 273165, P. R. China
| | - Lei Wang
- Key Laboratory of Life-Organic Analysis of Shandong Province, Key Laboratory of Green Natural Products and Pharmaceutical Intermediates in Universities of Shandong Province, Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu City, Shandong Province 273165, P. R. China
| | - Yixuan Zhang
- Key Laboratory of Life-Organic Analysis of Shandong Province, Key Laboratory of Green Natural Products and Pharmaceutical Intermediates in Universities of Shandong Province, Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu City, Shandong Province 273165, P. R. China
| | - Jiale Li
- Key Laboratory of Life-Organic Analysis of Shandong Province, Key Laboratory of Green Natural Products and Pharmaceutical Intermediates in Universities of Shandong Province, Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu City, Shandong Province 273165, P. R. China
| | - Laijin Tian
- Key Laboratory of Life-Organic Analysis of Shandong Province, Key Laboratory of Green Natural Products and Pharmaceutical Intermediates in Universities of Shandong Province, Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu City, Shandong Province 273165, P. R. China
| | - Yulei Zhao
- Key Laboratory of Life-Organic Analysis of Shandong Province, Key Laboratory of Green Natural Products and Pharmaceutical Intermediates in Universities of Shandong Province, Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu City, Shandong Province 273165, P. R. China
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23
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Zhou X, Wang J, Shen Y, Ma D, Zhao Y, Wu J. Cp 2Fe-Mediated Electrochemical Synthesis of Phosphorylated Oxindoles and Indolo[2,1- a]isoquinolin-6(5 H)-ones. J Org Chem 2023. [PMID: 37990818 DOI: 10.1021/acs.joc.3c02017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2023]
Abstract
An efficient and environmentally friendly electrochemical synthesis of phosphorylated oxindoles and indolo[2,1-a]isoquinolin-6(5H)-ones mediated by readily available Cp2Fe has been developed, which illustrated a broad substrate scope and diverse functional group compatibility. This protocol featured an external oxidant-free process and was at room temperature, which was proposed to be driven by the anodic oxidation of Cp2Fe.
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Affiliation(s)
- Xiaocong Zhou
- Institute of Drug Discovery Technology, Ningbo University, Zhejiang 315211, China
| | - Jian Wang
- Institute of Drug Discovery Technology, Ningbo University, Zhejiang 315211, China
| | - Yirui Shen
- School of Materials and Chemical Engineering, Ningbo University of Technology, Ningbo 315211, Zhejiang China
- Zhejiang Institute of Tianjin University, Ningbo, Zhejiang 315201, China
| | - Dumei Ma
- Key Laboratory of Advanced Mass Spectrometry and Molecular Analysis of Zhejiang Province, Institute of Mass Spectrometry, School of Material Science and Chemical Engineering, Ningbo University, Zhejiang 315211, China
| | - Yufen Zhao
- Institute of Drug Discovery Technology, Ningbo University, Zhejiang 315211, China
| | - Ju Wu
- Institute of Drug Discovery Technology, Ningbo University, Zhejiang 315211, China
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24
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Lokesh K, Kumarswamyreddy N, Kesavan V. Diastereoselective Construction of Tetrahydro-Dispiro[indolinone-3,2'-pyran-5',4″-pyrazolone] Scaffolds via an Oxa-Michael Cascade [4 + 2] Annulation Reaction. J Org Chem 2023; 88:15540-15550. [PMID: 36111800 DOI: 10.1021/acs.joc.2c01370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
A straightforward metal-free oxa-Michael cascade [4 + 2] annulation reaction was established between isatin-derived Morita-Baylis-Hillman (Is-MBH) alcohols with alkylidene pyrazolones to access structural diverse tetrahydro-dispiro[indolinone-3,2'-pyran-5',4″-pyrazolone] scaffolds bearing two tertiary and two quaternary stereocenters. The Is-MBH alcohol was utilized as an oxa-Michael donor for the first time as a new approach in highly atom-economical transformations. This method offered a wide range of bioinspired novel tetrahydro-dispirooxindole-pyran-pyrazolone derivatives in excellent yields (up to 96%) and diastereoselectivities (up to >20:1) in a shorter reaction time (15 min).
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Affiliation(s)
- Kanduru Lokesh
- Department of Chemistry, Indian Institute of Technology Tirupati, Tirupati, Andhra Pradesh 517619, India
- Chemical Biology Laboratory, Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology, Madras, Chennai 600036, India
| | - Nandarapu Kumarswamyreddy
- Department of Chemistry, Indian Institute of Technology Tirupati, Tirupati, Andhra Pradesh 517619, India
| | - Venkitasamy Kesavan
- Chemical Biology Laboratory, Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology, Madras, Chennai 600036, India
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25
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Alshammari MB, Aly AA, Ahmad A, Brown AB, Mohamed AH. Recent synthetic strategies of spiro-azetidin-2-one, -pyrrolidine, -indol(one) and -pyran derivatives-a review. RSC Adv 2023; 13:32786-32823. [PMID: 37942448 PMCID: PMC10628897 DOI: 10.1039/d3ra06054c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 10/24/2023] [Indexed: 11/10/2023] Open
Abstract
Spiro-heterocycles have received special attention in medicinal chemistry because of their promising biological activity. Over the years, many synthetic methodologies have been established for the construction of spirocyclic compounds. Spiro heterocycles such as spiro-azetidin-2-one, -pyrrolidine, -indol(one) and -pyran derivatives have been found to exhibit diversified biological and pharmacological activity in addition to their therapeutic properties. In view of these facts, we decided in this review to present representative synthetic approaches of the aforementioned spiro heterocycles, especially in the past 20 years.
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Affiliation(s)
- Mohammed B Alshammari
- Chemistry Department, College of Sciences and Humanities, Prince Sattam Bin Abdulaziz University Al-Kharij Saudi Arabia
| | - Ashraf A Aly
- Chemistry Department, Faculty of Science, Minia University 61519 El-Minia Egypt
| | - Akil Ahmad
- Chemistry Department, College of Sciences and Humanities, Prince Sattam Bin Abdulaziz University Al-Kharij Saudi Arabia
| | - Alan B Brown
- Department of Chemistry and Chemical Engineering, Florida Institute of Technology Melbourne FL 32901 USA
| | - Asmaa H Mohamed
- Chemistry Department, Faculty of Science, Minia University 61519 El-Minia Egypt
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26
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Zhang ZW, Liu SW, Huang HP, Xie YH, Huang RC, Deng YQ, Lin N. Dehydroabietane-type bifunctional organocatalysts in asymmetric synthesis: recent progress. RSC Adv 2023; 13:31047-31058. [PMID: 37881754 PMCID: PMC10594059 DOI: 10.1039/d3ra06715g] [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: 10/03/2023] [Accepted: 10/19/2023] [Indexed: 10/27/2023] Open
Abstract
Dehydroabietane-type bifunctional organocatalysts derived from rosane-type diterpenes of dehydroabietic acid (DHAA) and dehydroabietylamine (DA) have been utilized in a wide variety of highly enantioselective reactions. Since one well-documented review exclusively reported on the development of terpene-derived bifunctional thioureas in asymmetric organocatalysis in 2013, fragmentary progress on the dehydroabietane-type bifunctional thioureas and squaramides has been mentioned in other reviews. In this mini-review, we systematically analyze and reorganize the published literature on dehydroabietane-type bifunctional organocatalysts in the recent decade according to the type of catalysts. Our aim is for this review to provide helpful research information and serve as a foundation for further design and application of rosin-based organocatalysts.
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Affiliation(s)
- Zhen-Wei Zhang
- College of Pharmacy, Guangxi University of Chinese Medicine, Guangxi Zhuang Yao Medicine Center of Engineering and Technology Nanning 530200 China
- Key Laboratory of TCM Extraction and Purification and Quality Analysis (Guangxi University of Chinese Medicine), Education Department of Guangxi Zhuang Autonomous Region Nanning 530200 China
| | - Shao-Wu Liu
- College of Pharmacy, Guangxi University of Chinese Medicine, Guangxi Zhuang Yao Medicine Center of Engineering and Technology Nanning 530200 China
| | - Hong-Ping Huang
- College of Pharmacy, Guangxi University of Chinese Medicine, Guangxi Zhuang Yao Medicine Center of Engineering and Technology Nanning 530200 China
| | - Yu-Hang Xie
- College of Pharmacy, Guangxi University of Chinese Medicine, Guangxi Zhuang Yao Medicine Center of Engineering and Technology Nanning 530200 China
| | - Ruo-Chen Huang
- College of Pharmacy, Guangxi University of Chinese Medicine, Guangxi Zhuang Yao Medicine Center of Engineering and Technology Nanning 530200 China
| | - Yan-Qiu Deng
- College of Pharmacy, Guangxi University of Chinese Medicine, Guangxi Zhuang Yao Medicine Center of Engineering and Technology Nanning 530200 China
- Key Laboratory of TCM Extraction and Purification and Quality Analysis (Guangxi University of Chinese Medicine), Education Department of Guangxi Zhuang Autonomous Region Nanning 530200 China
| | - Ning Lin
- College of Pharmacy, Guangxi University of Chinese Medicine, Guangxi Zhuang Yao Medicine Center of Engineering and Technology Nanning 530200 China
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27
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Biswas S, Purkayastha SK, Guha AK, Pan SC. Sequential organo and metal catalyzed reaction between 3-pyrrolyloxindoles and linear nitroenynes: access to cyclic aza-spirooxindoles. Chem Commun (Camb) 2023; 59:12156-12159. [PMID: 37740344 DOI: 10.1039/d3cc03713d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/24/2023]
Abstract
An asymmetric Michael addition/hydroarylation reaction sequence, catalyzed by a sequential catalytic system consisting of a squaramide and a combination of silver and gold salts, provides a new series of cyclic aza-spirooxindole derivatives in excellent yields (up to 94%) and high diastero- and enantioselectivities (up to 7 : 1 dr, up to >99% ee). Computational study has also been performed.
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Affiliation(s)
- Subhankar Biswas
- Department of Chemistry, Indian Institute of Technology Guwahati, 781039, India.
| | | | - Ankur K Guha
- Department of Chemistry, Cotton University, Assam, 781001, India
| | - Subhas Chandra Pan
- Department of Chemistry, Indian Institute of Technology Guwahati, 781039, India.
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28
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Gudise VB, Anwar S. Multicomponent reaction (MCR) for constructing bis-spirocyclohexane skeletons using β-nitrostyrene derived MBH acetates, 1,3-indanedione and aldehydes via [1 + 1 + 1 + 3] annulation. RSC Adv 2023; 13:27456-27460. [PMID: 37711377 PMCID: PMC10498677 DOI: 10.1039/d3ra04996e] [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: 07/24/2023] [Accepted: 09/04/2023] [Indexed: 09/16/2023] Open
Abstract
An AB2C type four-component quadruple cascade reaction has been established between nitroallylic MBH acetate, 1,3-indanedione and aldehyde for generating bis-spirocyclohexanes. This reaction progressed in an unusual [1 + 1 + 1 + 3] annulation manner via a Knoevenagel/Michael/Michael/Michael sequence, resulting in the generation of three/four chiral centres, and two all-carbon quaternary centres through the formation of 3 new C-C bonds.
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Affiliation(s)
- Veera Babu Gudise
- Department of Chemistry, School of Applied Sciences and Humanities, Vignan's Foundation for Science, Technology and Research-VFSTR, (Deemed to be University) Vadlamudi Guntur 522 213 Andhra Pradesh India (+91)-8632344700
| | - Shaik Anwar
- Department of Chemistry, School of Applied Sciences and Humanities, Vignan's Foundation for Science, Technology and Research-VFSTR, (Deemed to be University) Vadlamudi Guntur 522 213 Andhra Pradesh India (+91)-8632344700
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29
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Zhao H, Zhao Y. Engaging Isatins and Amino Acids in Multicomponent One-Pot 1,3-Dipolar Cycloaddition Reactions-Easy Access to Structural Diversity. Molecules 2023; 28:6488. [PMID: 37764264 PMCID: PMC10536439 DOI: 10.3390/molecules28186488] [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: 07/30/2023] [Revised: 08/28/2023] [Accepted: 09/01/2023] [Indexed: 09/29/2023] Open
Abstract
Multicomponent reactions (MCRs) have undoubtedly emerged as the most indispensable tool for organic chemists worldwide, finding extensive utility in the synthesis of intricate natural products, heterocyclic molecules with significant bioactivity, and pharmaceutical agents. The multicomponent one-pot 1,3-dipolar cycloaddition reactions, which were initially conceptualized by Rolf Huisgen in 1960, find extensive application in contemporary heterocyclic chemistry. In terms of green synthesis, the multicomponent 1,3-dipolar cycloaddition is highly favored owing to its numerous advantages, including high step- and atom-economies, remarkable product diversity, as well as excellent efficiency and diastereoselectivity. Among the numerous pieces of research, the most fascinating reaction involves the utilization of azomethine ylides generated from isatins and amino acids that can be captured by various dipolarophiles. This approach offers a highly efficient and convenient method for constructing spiro-pyrrolidine oxindole scaffolds, which are crucial building blocks in biologically active molecules. Consequently, this review delves deeper into the dipolarophiles utilized in the 1,3-dipolar cycloaddition of isatins and amino acids over the past six years.
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Affiliation(s)
- Hua Zhao
- Institute of Drug Discovery Technology, Qian Xuesen Collaborative Research Center of Astrochemistry and Space Life Sciences, Ningbo University, Ningbo 315211, China
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30
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Sarma MJ, Sudarshana KA, Pabbaraja S, Mehta G. Diversified Stitching of Ynones with Oxindole-3-oxy acrylates: One-Flask Spiro-annulation Protocol toward Assorted 3 H/5 H-Spiro[furan-2,3'-indolin]-2'-ones. J Org Chem 2023; 88:12131-12140. [PMID: 37503726 DOI: 10.1021/acs.joc.3c01279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Spiroannulation of oxindole-3-oxy acrylates with ynones involving two overlapping, base differentiated cascades has been observed. Initial exposure of ynones and oxindole 3-oxy acrylates to K2CO3 triggered a tandem Michael-Michael cascade to deliver a pair of spiroannulated diastereomers. Further exposure to LiHMDS led to deep restructuring through a second multistep cascade involving stereoselective recreation of the C3 quaternary center to furnish 3H-spiro[furan-2,3'-indolin]-2'-ones with functional amplification and scrambling. This new scaffold can be directly accessed in a one-flask operation from ynones and oxindole-3-oxy acrylates.
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Affiliation(s)
- Manas Jyoti Sarma
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - K A Sudarshana
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Srihari Pabbaraja
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Goverdhan Mehta
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India
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31
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Durugappa B, C S A, Doddamani SV, Somappa SB. DBU-Catalyzed Diastereo/Regioselective Access to Highly Substituted Spiro-oxetane Oxindoles via Ring Annulation of Isatins and Allenoates. J Org Chem 2023. [PMID: 37363866 DOI: 10.1021/acs.joc.3c00664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
A facile and efficient method for the diastereo/regioselective synthesis of highly functionalized spiro-oxetane oxindoles has been described. The 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU)-catalyzed reaction proceeds via spiro-annulation of isatins and allenoates. The reaction is compatible with a wide range of isatins containing electron-donating groups (EDGs) and electron-withdrawing groups (EWGs) with various allenoates affording the corresponding products in acceptable yields. It is noteworthy that this is the first protocol for constructing structurally diverse motifs of highly functionalized spiro-oxetane oxindoles of pharmaceutical relevance.
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Affiliation(s)
- Basavaraja Durugappa
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (NIIST), Thiruvananthapuram 695019, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Athira C S
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (NIIST), Thiruvananthapuram 695019, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Siddalingeshwar V Doddamani
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (NIIST), Thiruvananthapuram 695019, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sasidhar B Somappa
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (NIIST), Thiruvananthapuram 695019, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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32
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Muthusamy S, Naveen R, Kumar MDS. Base-mediated cascade synthesis of indole diolefins: a route to spiro[cyclopentene-indole]thiones and thiepino[2,3- b]indoles. Chem Commun (Camb) 2023. [PMID: 37338080 DOI: 10.1039/d3cc01870a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2023]
Abstract
Base-mediated cascade reactions of 3-hydroxymethyl-3-propenylindole-2-thiones afforded diolefins and involved deformylation, thioenolate alkylation and the thio-Claisen rearrangement. Subsequent ring-closing metathesis reactions of the diolefins furnished 3-spiro[cyclopentene-indole]-2-thiones or thiepino[2,3-b]indoles.
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Affiliation(s)
| | - Ramasamy Naveen
- School of Chemistry, Bharathidasan University, Tiruchirappalli-620024, India.
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33
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Chen Z, Zhong W, Liu S, Zou T, Zhang K, Gong C, Guo W, Kong F, Nie L, Hu S, Wang H. Highly Stereodivergent Synthesis of Chiral C4-Ester-Quaternary Pyrrolidines: A Strategy for the Total Synthesis of Spirotryprostatin A. Org Lett 2023; 25:3391-3396. [PMID: 37162168 DOI: 10.1021/acs.orglett.3c00904] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
In this work, we disclose two sets of highly diastereo- and enantioselective [3 + 2] cycloadditions of iminoesters with various α-substituted acrylates, especially for sterically hindered and weakly activated α-aryl or alkyl-substituted acrylates and alkenal, alkynal, or unstable aliphatic aldehyde-derived iminoesters, catalyzed by the AgHMDS/DTBM-Segphos or Ag2O/CA-AA-Amidphos catalytic system, achieving the stereodivergent synthesis of chiral C4-ester-quaternary exo- or endo-pyrrolidines with high yields and excellent diastereo- and enantioselectivities (up to >99:1 dr and >99% ee). More importantly, the gram-scale synthetic exo-adduct displays significant applications in the aspect of realizing the total synthesis of the spirotryprostatin A alkaloid via nine steps in a 36% overall yield.
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Affiliation(s)
- Zhigang Chen
- College of Life Science and Chemistry, Hunan University of Technology, Zhuzhou, Hunan 412007, P. R. China
| | - Wei Zhong
- College of Life Science and Chemistry, Hunan University of Technology, Zhuzhou, Hunan 412007, P. R. China
| | - Sihua Liu
- College of Life Science and Chemistry, Hunan University of Technology, Zhuzhou, Hunan 412007, P. R. China
| | - Ting Zou
- College of Life Science, Hunan Normal University, Changsha, Hunan 410081, P. R. China
| | - Kaiqiang Zhang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics and Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen, Fujian 361102, P. R. China
| | - Chuliang Gong
- College of Life Science and Chemistry, Hunan University of Technology, Zhuzhou, Hunan 412007, P. R. China
| | - Wenyan Guo
- College of Life Science and Chemistry, Hunan University of Technology, Zhuzhou, Hunan 412007, P. R. China
| | - Feizhi Kong
- College of Life Science and Chemistry, Hunan University of Technology, Zhuzhou, Hunan 412007, P. R. China
| | - Libo Nie
- College of Life Science and Chemistry, Hunan University of Technology, Zhuzhou, Hunan 412007, P. R. China
| | - Shunqin Hu
- College of Life Science and Chemistry, Hunan University of Technology, Zhuzhou, Hunan 412007, P. R. China
| | - Haifei Wang
- College of Life Science and Chemistry, Hunan University of Technology, Zhuzhou, Hunan 412007, P. R. China
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34
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Zhu Y, Yang S, Pu E, Li L, Ye S, Wei L, Ma G, Zhang Y, Zhang H, Chen J. Iodine(III)-Mediated C-C Bond Coupling to Construct Spirocyclic Indolenines of Various Ring Sizes. Org Lett 2023; 25:3533-3538. [PMID: 37154601 DOI: 10.1021/acs.orglett.3c01106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Herein, we report a novel iodine(III)-mediated intramolecular dearomative spirocyclization of indole derivatives to generate highly strained spirocyclobutyl, spirocyclopentyl, and spirocyclohexyl indolenines in moderate to good yields. A set of structurally novel, densely functionalized spiroindolenines with broad functional group compatibility was efficiently constructed in this way under mild reaction conditions. Moreover, the β-enamine ester as a versatile functional group in the product provides great convenience for the synthesis of bioactive compounds and related natural products.
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Affiliation(s)
- Yanren Zhu
- School of Pharmacy, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650500, P. R. China
| | - Shaoxiong Yang
- School of Pharmacy, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650500, P. R. China
| | - Enfan Pu
- School of Pharmacy, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650500, P. R. China
| | - Li Li
- School of Pharmacy, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650500, P. R. China
| | - Silei Ye
- School of Pharmacy, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650500, P. R. China
| | - Longsheng Wei
- School of Pharmacy, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650500, P. R. China
| | - Guolan Ma
- School of Pharmacy, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650500, P. R. China
| | - Yushun Zhang
- School of Pharmacy, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650500, P. R. China
| | - Hongbin Zhang
- School of Pharmacy, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650500, P. R. China
| | - Jingbo Chen
- School of Pharmacy, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650500, P. R. China
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35
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Khalaj M, Taherkhani M, Payen L, Klein A. A Sulfonic Acid Polyvinyl Pyridinium Ionic Liquid Catalyzes the Multi-Component Synthesis of Spiro-indoline-3,5'-pyrano[2,3- d]-pyrimidines and -Pyrazines. Molecules 2023; 28:molecules28093663. [PMID: 37175073 PMCID: PMC10180120 DOI: 10.3390/molecules28093663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 04/11/2023] [Accepted: 04/17/2023] [Indexed: 05/15/2023] Open
Abstract
A sulfonated poly-4-vinyl pyridinium (PVPy-IL-B-SO3H) containing an acidic pyridinium/HSO3- ionic liquid moiety was prepared and used as a catalyst for the three-component reaction of malononitrile with 1-alkylindoline-2,3-diones and 1,3-dimethylpyrimidine-2,4,6(1H,3H,5H)-trione or methyl 5-hydroxy-1H-pyrazole-3-carboxylate, leading to methyl 6'-amino-5'-cyano-2-oxo-2'H-spiro[indoline-3,4'-pyrano[2,3-c]pyrazole]-3'-carboxylates or -3,4'-pyrano[2,3-d]pyrimidine]-6'-carbonitrile derivatives under ultrasonic irradiation conditions. The solid catalyst allows easy separation, is cheap, produces high yields under mild conditions, and does not require column chromatography for product isolation and purification.
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Affiliation(s)
- Mehdi Khalaj
- Department of Chemistry, Buinzahra Branch, Islamic Azad University, Buinzahra 1477893855, Iran
| | - Mahboubeh Taherkhani
- Department of Chemistry, Takestan Branch, Islamic Azad University, Takestan 3481949479, Iran
| | - Leo Payen
- Institute for Inorganic Chemistry, Department of Chemistry, Faculty of Mathematics and Natural Sciences, University of Cologne, Greinstrasse 6, 50939 Köln, Germany
| | - Axel Klein
- Institute for Inorganic Chemistry, Department of Chemistry, Faculty of Mathematics and Natural Sciences, University of Cologne, Greinstrasse 6, 50939 Köln, Germany
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36
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Eskandari M, Jadidi K, Notash B. Substrate-Controlled Diastereo- and Enantiodivergent Synthesis of Bis-Spirocyclopropyloxindoles from Available Isatin as a Single Starting Material. J Org Chem 2023; 88:5254-5274. [PMID: 37083424 DOI: 10.1021/acs.joc.2c02452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/22/2023]
Abstract
The first diastereo- and enantiodivergent asymmetric synthesis of new bis-spirocyclopropyloxindole scaffolds has been accomplished from the readily available isatin as a single starting material. Four rel-(1R,2R,3R), rel-(1S,2S,3R), rel-(1R,2R,3S), and rel-(1S,2S,3S) configurations of desired products were constructed in excellent enantiopurity via a simple switch in substrates using the chiral auxiliary-controlled method. The absolute configuration of cycloadducts with three contiguous quaternary/tertiary stereogenic centers was confirmed through X-ray diffraction analysis. A facile synthesis of versatile precursor 3-chlorooxindoles was also introduced.
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Affiliation(s)
- Mehdi Eskandari
- Faculty of Chemistry and Petroleum Sciences, Department of Organic Chemistry, Shahid Beheshti University, Tehran 1983963113, Iran
| | - Khosrow Jadidi
- Faculty of Chemistry and Petroleum Sciences, Department of Organic Chemistry, Shahid Beheshti University, Tehran 1983963113, Iran
| | - Behrouz Notash
- Faculty of Chemistry and Petroleum Sciences, Department of Inorganic Chemistry, Shahid Beheshti University, Tehran 1983969411, Iran
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37
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Ma T, Zheng Y, Huang S. SO 2ClF: A Reagent for Controllable Chlorination and Chlorooxidation of Simple Unprotected Indoles. J Org Chem 2023; 88:4839-4847. [PMID: 36931283 DOI: 10.1021/acs.joc.3c00039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
Abstract
Sulfuryl chlorofluoride was first employed as a versatile reagent for controllable chlorination and chlorooxidation of simple unprotected indoles. Three types of products including 3-chloro-indoles, 3-chloro-2-oxindoles, and 3,3-dichloro-2-oxindoles could be selectively obtained in good to excellent yields by switching the reaction solvents. The present method features easy-to-operate, broad substrate scope, and mild reaction conditions.
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Affiliation(s)
- Tianting Ma
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China
| | - Yu Zheng
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China
| | - Shenlin Huang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, China
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38
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Asmari Bardazard K, Shahrestani N, Zamani A, Eskandari M, Jadidi K, Hamzehloueian M, Notash B. Regioselective synthesis of enantiopure 1,2- and 1,3-dispirooxindoles along with a DFT study. Org Biomol Chem 2023; 21:2143-2161. [PMID: 36799076 DOI: 10.1039/d2ob02311c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
In the present study, a library of important enantiopure dispirooxindole [indolizidine, pyrrolizidine, and pyrrolidine] derivatives with three or four contiguous and two quaternary stereogenic centers using different amino acids (pipecolic acid, sarcosine, proline and hydroxyproline) were synthesized in high yields (up to 96%) through a regio- and diastereoselective (up to 99 : 1) multicomponent 1,3-dipolar cycloaddition strategy. Based on the results, the alteration of amino acids led to a change in the regioselectivity and unusual regioisomers (pyrrolizidine versus indolizidine/pyrrolidine) were obtained to construct a novel enantiopure 1,3-dispirooxindole skeleton. The stereochemical outcome of the cycloaddition was determined by single crystal X-ray diffraction analysis and the self-disproportionation of enantiomers (SDE) test confirmed the enantiomeric purity of the desired products. The mechanism and differences in the regioselectivity of the 1,3-dipolar cycloaddition reactions between the stable azomethane ylides obtained from ninhydrin, pipecolinic acid, and proline with (E)-2-oxoindolin-3-ylideneacetyl sultam were theoretically studied through DFT calculations at the M06-2X/6-31G(d,p) level in methanol.
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Affiliation(s)
- Kamal Asmari Bardazard
- Department of Organic Chemistry, Shahid Beheshti University, G.C., Tehran 1983963113, Iran.
| | - Naeimeh Shahrestani
- Department of Organic Chemistry, Shahid Beheshti University, G.C., Tehran 1983963113, Iran.
| | - Amirhosein Zamani
- Department of Organic Chemistry, Shahid Beheshti University, G.C., Tehran 1983963113, Iran.
| | - Mehdi Eskandari
- Department of Organic Chemistry, Shahid Beheshti University, G.C., Tehran 1983963113, Iran.
| | - Khosrow Jadidi
- Department of Organic Chemistry, Shahid Beheshti University, G.C., Tehran 1983963113, Iran.
| | | | - Behrouz Notash
- Department of Inorganic Chemistry and Catalysis, Shahid Beheshti University, G.C., Tehran 19839 69411, Iran
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Pang Q, Zuo WF, Zhang Y, Li X, Han B. Recent Advances on Direct Functionalization of Indoles in Aqueous Media. CHEM REC 2023; 23:e202200289. [PMID: 36722727 DOI: 10.1002/tcr.202200289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 01/15/2023] [Indexed: 02/02/2023]
Abstract
Indoles and their derivatives have dominated a significant proportion of nitrogen-containing heterocyclic compounds and play an essential role in synthetic and medicinal chemistry, pesticides, and advanced materials. Compared with conventional synthetic strategies, direct functionalization of indoles provides straightforward access to construct diverse indole scaffolds. As we enter an era emphasizing green and sustainable chemistry, utilizing environment-friendly solvents represented by water demonstrates great potential in synthesizing valuable indole derivatives. This review aims to depict the critical aspects of aqueous-mediated indoles functionalization over the past decade and discusses the future challenges and prospects in this fast-growing field. For the convenience of readers, this review is classified into three parts according to the bonding modes (C-C, C-N, and C-S bonds), which focus on the diversity of indole derivatives, the prominent role of water in the chemical process, and the types of catalyst systems and mechanisms. We hope this review can promote the sustainable development of the direct functionalization of indoles and their derivatives and the discovery of novel and practical organic methods in aqueous phase.
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Affiliation(s)
- Qiwen Pang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Wei-Fang Zuo
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Yang Zhang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Xiang Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Bo Han
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
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Borah B, Veeranagaiah NS, Sharma S, Patat M, Prasad MS, Pallepogu R, Chowhan LR. Stereoselective synthesis of CF 3-containing spirocyclic-oxindoles using N-2,2,2-trifluoroethylisatin ketimines: an update. RSC Adv 2023; 13:7063-7075. [PMID: 36875873 PMCID: PMC9977426 DOI: 10.1039/d3ra00017f] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 02/15/2023] [Indexed: 03/05/2023] Open
Abstract
The introduction of fluorine-containing groups into organic molecules either changes or improves the characteristics of the target compounds. On the other hand, spirocyclic-oxindoles featuring C-3 functionalized sp3-hybridized carbon atoms of three-dimensional orthogonally shaped molecules were well recognized in the core structure of varied natural products and synthetic pharmaceutical targets. Consequently, the construction of spirooxindoles by an elegant synthetic approach with efficient stereocontrol has received tremendous interest over the past decades. In this context of the synergic combination of the features associated with fluorine-containing compounds and the synthetic and medicinal efficiency associated with spirooxindoles, the stereodivergent installation of CF3 groups embedded with spirooxindoles is of increasing academic and scientific interest. This mini-review article is dedicated to demonstrating a critical overview of the recent stereoselective synthesis of spirocyclic-oxindoles featuring trifluoromethyl groups by employing the reactivity of N-2,2,2-trifluoroethylisatin ketimines as an efficient and easily prepared synthon, and covers the literature reports from 2020 to date. Besides exploring the advancements accomplished in this area, we also investigate the limitations associated with reaction discovery, mechanistic rationalization, and future applications.
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Affiliation(s)
- Biplob Borah
- School of Applied Material Sciences, Centre for Applied Chemistry, Central University of Gujarat Gandhinagar-382030 India
| | - Naveena S Veeranagaiah
- Department of Chemistry, Central University of Karnataka, Kalaburagi Karnataka-585367 India
| | - Samrita Sharma
- School of Applied Material Sciences, Centre for Applied Chemistry, Central University of Gujarat Gandhinagar-382030 India
| | - Mihir Patat
- School of Applied Material Sciences, Centre for Applied Chemistry, Central University of Gujarat Gandhinagar-382030 India
| | - Madavi S Prasad
- Department of Chemistry, Asymmetric Synthesis and Catalysis Laboratory, Central University of Tamil Nadu (CUTN) Tiruvarur 610 005 India
| | - Raghavaiah Pallepogu
- Department of Chemistry, Central University of Karnataka, Kalaburagi Karnataka-585367 India
| | - L Raju Chowhan
- School of Applied Material Sciences, Centre for Applied Chemistry, Central University of Gujarat Gandhinagar-382030 India
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41
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Borah B, Patat M, Singh V, Sivaprakash M, Prasad MS, Chowhan LR. Visible-light-induced organophotocatalytic and singlet oxygen-initiated domino construction of 1,4-dihydropyridines, C-3 functionalized spiro[indoline-3,4'-pyridines] and C-11 functionalized spiro[indeno-[1,2- b]quinoxaline-11,4'-pyridines]. Org Biomol Chem 2023; 21:1518-1530. [PMID: 36695344 DOI: 10.1039/d3ob00043e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A highly efficient pot, atom, and step economical method for the construction of pharmacologically potent structurally functionalized 1,4-dihydropyridines, quaternary centered C-3 functionalized spiro[indoline-3,4'-pyridines], and C-11 functionalized spiro[indeno[1,2-b]quinoxaline-11,4'-pyridines] via rose bengal photoredox catalysis under blue LED irradiation in an aqueous medium at room temperature has been developed. The products were isolated in excellent yields within a short reaction time for a variety of functional groups under transition metal- and ligand-free energy-efficient conditions in a green solvent system with high reaction mass efficiency and process mass intensity, which are the key advantages of the current work.
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Affiliation(s)
- Biplob Borah
- School of Applied Material Sciences, Centre for Applied Chemistry, Central University of Gujarat, Gandhinagar-382030, India.
| | - Mihir Patat
- School of Applied Material Sciences, Centre for Applied Chemistry, Central University of Gujarat, Gandhinagar-382030, India.
| | - Vipin Singh
- School of Applied Material Sciences, Centre for Applied Chemistry, Central University of Gujarat, Gandhinagar-382030, India.
| | - Murugesan Sivaprakash
- Asymmetric Synthesis and Catalysis Laboratory, Department of Chemistry, Central University of Tamil Nadu (CUTN), Tiruvarur-610 005, India
| | - Madavi S Prasad
- Asymmetric Synthesis and Catalysis Laboratory, Department of Chemistry, Central University of Tamil Nadu (CUTN), Tiruvarur-610 005, India
| | - L Raju Chowhan
- School of Applied Material Sciences, Centre for Applied Chemistry, Central University of Gujarat, Gandhinagar-382030, India.
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42
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Qu Z, Ji X, Tian L, Mao G, Deng GJ, Huang H. TBHP-mediated photochemical coupling/cyclization of N-arylacrylamides with thiols. Org Biomol Chem 2023; 21:940-944. [PMID: 36602241 DOI: 10.1039/d2ob02187k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The effective photoredox-mediated oxidative thiolation and cyclization of N-arylacrylamides with thiols leads to biologically interesting 3-thionated oxindoles through C-S and C-C bond formation. This process represents a straightforward reaction that starts from non-prefunctionalized thiolating reagents. Mechanistic studies demonstrated that the TBHP serves as a key radical initiator with visible-light catalysis.
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Affiliation(s)
- Zhonghua Qu
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China.
| | - Xiaochen Ji
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China.
| | - Lin Tian
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China.
| | - Guojiang Mao
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, P. R. China
| | - Guo-Jun Deng
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China. .,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, P. R. China
| | - Huawen Huang
- Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China.
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Vopálenská A, Dočekal V, Petrželová S, Císařová I, Veselý J. Access to Spirooxindole-Fused Cyclopentanes via a Stereoselective Organocascade Reaction Using Bifunctional Catalysis. J Org Chem 2023. [PMID: 36705518 DOI: 10.1021/acs.joc.2c02478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The present study reports an asymmetric organocascade reaction of oxindole-derived alkenes with 3-bromo-1-nitropropane efficiently catalyzed by the bifunctional catalyst. Spirooxindole-fused cyclopentanes were produced in moderate-to-good isolated yields (15-69%) with excellent stereochemical outcomes. The synthetic utility of the protocol was exemplified on a set of additional transformations of the corresponding spirooxindole compounds.
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Affiliation(s)
- Andrea Vopálenská
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 128 43Prague 2, Czech Republic
| | - Vojtěch Dočekal
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 128 43Prague 2, Czech Republic
| | - Simona Petrželová
- Department of Teaching and Didactics of Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 128 43Prague 2, Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 128 43Prague 2, Czech Republic
| | - Jan Veselý
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 128 43Prague 2, Czech Republic
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Liu D, Zhao Y, Patureau FW. NaI/PPh 3-catalyzed visible-light-mediated decarboxylative radical cascade cyclization of N-arylacrylamides for the efficient synthesis of quaternary oxindoles. Beilstein J Org Chem 2023; 19:57-65. [PMID: 36741816 PMCID: PMC9874234 DOI: 10.3762/bjoc.19.5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 12/08/2022] [Indexed: 01/18/2023] Open
Abstract
A practical NaI/PPh3-catalyzed decarboxylative radical cascade cyclization of N-arylacrylamides with redox-active esters is described, which is mediated by visible light irradiation. A wide range of substrates bearing different substituents and derived from ubiquitous carboxylic acids, including α-amino acids, were synthesized and examined under this very mild, efficient, and cost effective transition-metal-free synthetic method. These afforded various functionalized oxindoles featuring a C3 quaternary stereogenic center. Mechanistic experiments suggest a radical mechanism.
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Affiliation(s)
- Dan Liu
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Yue Zhao
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Frederic W Patureau
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
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45
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Dar'in D, Kantin G, Glushakova D, Sharoyko V, Krasavin M. Diazo Tetramic Acids Provide Access to Natural-Like Spirocyclic Δ α,β-Butenolides through Rh(II)-Catalyzed O-H Insertion/Base-Promoted Cyclization. J Org Chem 2023. [PMID: 36603207 DOI: 10.1021/acs.joc.2c02600] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
3-Diazotetramic acids were found to be valid substrates for the recently discovered approach toward natural-like Δα,β-spirobutenolides via Rh(II)-catalyzed O-H insertion into propiolic acids followed by base-promoted intramolecular Michael addition. The target Δα,β-spirobutenolides were obtained in generally high yields and, in the case of chiral 5-monosubstituted 3-diazotetramic acids, high diastereoselectivity. The synthesis of Δα,β-spirobutenolides that we report here was virtually insensitive to the structure of the propiolic acids though it was somewhat sensitive to the structure of the 3-diazotetramic acids, thereby demonstrating quite a large scope. Thus, a new class of α-diazocarbonyl compounds suitable for the realization of the approach outlined above was identified.
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Affiliation(s)
- Dmitry Dar'in
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetsky prospekt, Peterhof 198504 Russia
| | - Grigory Kantin
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetsky prospekt, Peterhof 198504 Russia
| | - Daria Glushakova
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetsky prospekt, Peterhof 198504 Russia
| | - Vladimir Sharoyko
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetsky prospekt, Peterhof 198504 Russia
- The Pavlov First Medical University, 6-8 Lva Tolstogo ulitsa, Saint Petersburg 197022, Russia
| | - Mikhail Krasavin
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetsky prospekt, Peterhof 198504 Russia
- Immanuel Kant Baltic Federal University, 14 Aleksandra Nevskogo ulitsa, Kaliningrad 236041, Russia
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46
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Sanap D, Avhad L, Ghotekar S, Gaikwad ND. An expedient synthesis of C3-arylidene-oxindole derivatives using calcite nanoflowers as an efficient heterogeneous catalyst. INORG CHEM COMMUN 2023. [DOI: 10.1016/j.inoche.2022.110387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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47
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Peng T, Liu T, Zhao J, Dong J, Zhao Y, Yang Y, Yan X, Xu W, Shen X. Enantioselective Total Synthesis of Spirotryprostatin A. J Org Chem 2022; 87:16743-16754. [PMID: 36445815 DOI: 10.1021/acs.joc.2c02391] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In this paper, we disclosed a novel enantioselective total synthesis of spirotryprostatin A (1) in 15 steps with a 7.4% total yield from commercially available 2-iodo-5-methoxyaniline and γ-butyrolactone. The key step features of this synthesis include the copper-catalyzed cascade reaction of o-iodoaniline derivatives with alkynone to introduce the quaternary carbon stereocenter and an aza-Michael tandem reaction to construct the spiro[pyrrolidine-3,3'-oxindole] moiety.
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Affiliation(s)
- Tianfeng Peng
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing, Yunnan 655011, P. R. China
| | - Teng Liu
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing, Yunnan 655011, P. R. China
| | - Jingfeng Zhao
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan Province, Yunnan University, Kunming, Yunnan 650091, P. R. China
| | - Jianwei Dong
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing, Yunnan 655011, P. R. China
| | - Yuxiang Zhao
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing, Yunnan 655011, P. R. China
| | - Yixiao Yang
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing, Yunnan 655011, P. R. China
| | - Xin Yan
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing, Yunnan 655011, P. R. China
| | - Wenlu Xu
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing, Yunnan 655011, P. R. China
| | - Xianfu Shen
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing, Yunnan 655011, P. R. China
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48
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Prasad MS, Bharani S, Sharief SM, Ravi M, Sivaprakash M, Borah B, Chowhan LR. DABCO-promoted highly diastereo- and regioselective construction of C-3 functionalized spirooxindoles via [3 + 2] cycloaddition of 2-aryl/heteroarylidene-1 H-indene-1,3(2 H)-diones with N-2,2,2-trifluoroethylisatin ketimines at ambient conditions. RSC Adv 2022; 12:34941-34945. [PMID: 36540219 PMCID: PMC9724611 DOI: 10.1039/d2ra07141j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 12/01/2022] [Indexed: 02/07/2024] Open
Abstract
The application of 2-aryl/heteroarylidene-1H-indene-1,3(2H)-dione as an activated olefin source in the DABCO-catalyzed [3 + 2] cycloaddition with N-2,2,2-trifluoroethylisatin ketimines has been disclosed. This highly efficient 1,3-dipolar cycloaddition reaction offered a variety of trifluoro methyl group bearing spiro-pyrrolidine linked oxindoles with four consecutive stereocentres in good to excellent yield and excellent diastereoselectivity. The synthetic practicality of the protocol was established by demonstrating the enantioselective construction of spiro-pyrrolidine-oxindoles with two vicinal spiro-quaternary chiral centres in good yield excellent enantioselectivity (>90% ee) by using ultralow loading of quinine as the catalyst at room temperature.
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Affiliation(s)
- Madavi S Prasad
- Asymmetric Synthesis and Catalysis Laboratory, Department of Chemistry, Central University of Tamil Nadu (CUTN) Tiruvarur-610 005 India
| | - Sankar Bharani
- Asymmetric Synthesis and Catalysis Laboratory, Department of Chemistry, Central University of Tamil Nadu (CUTN) Tiruvarur-610 005 India
| | - Syed Mastan Sharief
- Asymmetric Synthesis and Catalysis Laboratory, Department of Chemistry, Central University of Tamil Nadu (CUTN) Tiruvarur-610 005 India
| | - Mudavath Ravi
- Asymmetric Synthesis and Catalysis Laboratory, Department of Chemistry, Central University of Tamil Nadu (CUTN) Tiruvarur-610 005 India
| | - Murugesan Sivaprakash
- Asymmetric Synthesis and Catalysis Laboratory, Department of Chemistry, Central University of Tamil Nadu (CUTN) Tiruvarur-610 005 India
| | - Biplob Borah
- School of Applied Material Sciences, Centre for Applied Chemistry, Central University of Gujarat Sector-30 Gandhinagar-382030 Gujarat India
| | - L Raju Chowhan
- School of Applied Material Sciences, Centre for Applied Chemistry, Central University of Gujarat Sector-30 Gandhinagar-382030 Gujarat India
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49
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Pramanik S, Saha P, Ghosh P, Mukhopadhyay C. Substrate specific ring opening annulations of donor-acceptor cyclopropanes with 3-phenacylidene-2-oxindoles. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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50
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Xie C, Kim J, Mai BK, Cao S, Ye R, Wang XY, Liu P, Kwon O. Enantioselective Synthesis of Quaternary Oxindoles: Desymmetrizing Staudinger-Aza-Wittig Reaction Enabled by a Bespoke HypPhos Oxide Catalyst. J Am Chem Soc 2022; 144:21318-21327. [PMID: 36375169 PMCID: PMC10746329 DOI: 10.1021/jacs.2c09421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This paper describes a catalytic asymmetric Staudinger-aza-Wittig reaction of (o-azidoaryl)malonates, allowing access to chiral quaternary oxindoles through phosphine oxide catalysis. We designed a novel HypPhos oxide catalyst to enable the desymmetrizing Staudinger-aza-Wittig reaction through the PIII/PV═O redox cycle in the presence of a silane reductant and an IrI-based Lewis acid. The reaction occurs under mild conditions, with good functional group tolerance, a wide substrate scope, and excellent enantioselectivity. Density functional theory revealed that the enantioselectivity in the desymmetrizing reaction arose from the cooperative effects of the IrI species and the HypPhos catalyst. The utility of this methodology is demonstrated by the (formal) syntheses of seven alkaloid targets: (-)-gliocladin C, (-)-coerulescine, (-)-horsfiline, (+)-deoxyeseroline, (+)-esermethole, (+)-physostigmine, and (+)-physovenine.
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Affiliation(s)
- Changmin Xie
- Department of Chemistry and Biochemistry, University of California─Los Angeles, 607 Charles E. Young Dr. East, Los Angeles, California 90095-1569, United States
| | - Jacob Kim
- Department of Chemistry and Biochemistry, University of California─Los Angeles, 607 Charles E. Young Dr. East, Los Angeles, California 90095-1569, United States
| | - Binh Khanh Mai
- Department of Chemistry and Biochemistry, University of California─Los Angeles, 607 Charles E. Young Dr. East, Los Angeles, California 90095-1569, United States
| | - Shixuan Cao
- Department of Chemistry and Biochemistry, University of California─Los Angeles, 607 Charles E. Young Dr. East, Los Angeles, California 90095-1569, United States
| | - Rong Ye
- Department of Chemistry and Biochemistry, University of California─Los Angeles, 607 Charles E. Young Dr. East, Los Angeles, California 90095-1569, United States
| | - Xin-Yi Wang
- Department of Chemistry and Biochemistry, University of California─Los Angeles, 607 Charles E. Young Dr. East, Los Angeles, California 90095-1569, United States
| | - Peng Liu
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Ohyun Kwon
- Department of Chemistry and Biochemistry, University of California─Los Angeles, 607 Charles E. Young Dr. East, Los Angeles, California 90095-1569, United States
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