1
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Zhang GQ, Wu XX, Zhao BY, Wang MY, Zhang HX, Wang YQ. Palladium-Catalyzed Intermolecular Dehydrogenative C-2 Pentenylation of Indoles with 2-Methyl-2-butene. Org Lett 2024; 26:3509-3513. [PMID: 38652867 DOI: 10.1021/acs.orglett.4c00803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
Five-carbon (C5) units are the fundamental building blocks that constitute a multitude of natural products. Herein we report an unprecedented unusual C5 functionalization of indole regioselectively at the C-2-position enabled by a (2-pyridyl)sulfonyl-directing palladium-catalyzed dehydrogenative strategy with a bulk chemical 2-methyl-2-butene as a C5 source. Compared to typical C5 functionalization using pentenyl alcohols, carbonates, borates, or halides as the C5 source, the protocol not only has a low cost advantage but also is of atom and step economy.
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Affiliation(s)
- Guo-Qiang Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
| | - Xiao-Xuan Wu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
| | - Bao-Yin Zhao
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
| | - Meng-Yue Wang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
| | - Hong-Xia Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
| | - Yong-Qiang Wang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
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2
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Fay LY, Chien JY, Weng CF, Kuo HS, Liou DY, Weng WH, Lin CH, Chen YT, Huang WH, Huang WC, Tsai MJ, Cheng H. Evaluating the toxic mechanism of 1,2-diacetylbenzene in neural cells/tissues: The favorable impact of silibinin. Neurotoxicology 2023; 99:313-321. [PMID: 37981056 DOI: 10.1016/j.neuro.2023.11.005] [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: 09/08/2023] [Revised: 11/09/2023] [Accepted: 11/10/2023] [Indexed: 11/21/2023]
Abstract
1,2-diacetylbenzene (1,2-DAB) is a neurotoxic component of aromatic solvents commonly used in industrial applications that induces neuropathological changes in animals. This study unraveled the toxic impact of 1,2-DAB in nerve tissues, explant cultures, and neuron-glial cultures, and explored whether herbal products can mitigate its toxicity. The effects of DAB on axonal transport were studied in retinal explant cultures grown in a micro-patterned dish. The mitochondrial movement in the axons was captured using time-lapse video recordings. The results showed that 1,2-DAB, but not 1,3-DAB inhibited axonal outgrowth and mitochondrial movement in a dose-dependent manner. The toxicity of 1,2-DAB was further studied in spinal cord tissues and cultures. 1,2-DAB selectively induced modifications of microtubules and neurofilaments in spinal cord tissues. 1,2-DAB also potently induced cell damage in both neuronal and glial cultures. Further, 1,2-DAB-induced cellular ATP depletion precedes cell damage in glial cells. Interestingly, treatment with the herbal products silibinin or silymarin effectively mitigated 1,2-DAB-induced toxicity in spinal cord tissues and neuronal/glial cultures. Collectively, the molecular toxicity of 1,2-DAB in neural tissues involves protein modification, ATP depletion, and axonal transport defects, leading to cell death. Silibinin and silymarin show promising neuroprotective effects against 2-DAB-induced toxicity.
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Affiliation(s)
- Li-Yu Fay
- Neural Regeneration Laboratory, Department of Neurosurgery, Neurological Institute, Taipei Veterans General Hospital, Taipei 11217, Taiwan; Division of Neural Regeneration and Repair, Neurological Institute, Taipei Veterans General Hospital, Taipei 11217, Taiwan; Department of Medicine, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan.
| | - Jun-Yi Chien
- Neural Regeneration Laboratory, Department of Neurosurgery, Neurological Institute, Taipei Veterans General Hospital, Taipei 11217, Taiwan; Institute of Microbiology and Immunology, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan.
| | - Ching-Feng Weng
- Department of Chemistry, National Dong Hwa University, Hualien 97401, Taiwan.
| | - Huai-Sheng Kuo
- Neural Regeneration Laboratory, Department of Neurosurgery, Neurological Institute, Taipei Veterans General Hospital, Taipei 11217, Taiwan; Division of Neural Regeneration and Repair, Neurological Institute, Taipei Veterans General Hospital, Taipei 11217, Taiwan.
| | - Dann-Ying Liou
- Neural Regeneration Laboratory, Department of Neurosurgery, Neurological Institute, Taipei Veterans General Hospital, Taipei 11217, Taiwan; Division of Neural Regeneration and Repair, Neurological Institute, Taipei Veterans General Hospital, Taipei 11217, Taiwan.
| | - Wei-Hao Weng
- Department of Pharmacy, Taipei Veterans General Hospital, Taipei 11217, Taiwan.
| | - Chi-Hung Lin
- Institute of Biophotonics, National Yang Ming Chiao Tung University, Taipei 11221,Taiwan; Institute of Microbiology and Immunology, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan; Cancer Progression Research Center, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan.
| | - Ya-Tzu Chen
- Neural Regeneration Laboratory, Department of Neurosurgery, Neurological Institute, Taipei Veterans General Hospital, Taipei 11217, Taiwan; Division of Neural Regeneration and Repair, Neurological Institute, Taipei Veterans General Hospital, Taipei 11217, Taiwan.
| | - Wen-Hung Huang
- Neural Regeneration Laboratory, Department of Neurosurgery, Neurological Institute, Taipei Veterans General Hospital, Taipei 11217, Taiwan; Division of Neural Regeneration and Repair, Neurological Institute, Taipei Veterans General Hospital, Taipei 11217, Taiwan.
| | - Wen-Cheng Huang
- Neural Regeneration Laboratory, Department of Neurosurgery, Neurological Institute, Taipei Veterans General Hospital, Taipei 11217, Taiwan; Division of Neural Regeneration and Repair, Neurological Institute, Taipei Veterans General Hospital, Taipei 11217, Taiwan; Department of Medicine, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan.
| | - May-Jywan Tsai
- Neural Regeneration Laboratory, Department of Neurosurgery, Neurological Institute, Taipei Veterans General Hospital, Taipei 11217, Taiwan; Division of Neural Regeneration and Repair, Neurological Institute, Taipei Veterans General Hospital, Taipei 11217, Taiwan.
| | - Henrich Cheng
- Neural Regeneration Laboratory, Department of Neurosurgery, Neurological Institute, Taipei Veterans General Hospital, Taipei 11217, Taiwan; Division of Neural Regeneration and Repair, Neurological Institute, Taipei Veterans General Hospital, Taipei 11217, Taiwan; Department of Medicine, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan; Institute of Pharmacology, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan.
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3
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Sutariya TR, Brahmbhatt GC, Atara HD, Parmar NJ, RajniKant, Gupta VK, Lagunes I, Padrón JM, Murumkar PR, Sharma MK, Yadav MR. An efficient one-pot synthesis and docking studies of bioactive new antiproliferative dispiro[oxindole/acenaphthylenone‒benzofuranone] pyrrolidine scaffolds. Mol Divers 2023:10.1007/s11030-023-10741-4. [PMID: 37935912 DOI: 10.1007/s11030-023-10741-4] [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: 12/10/2022] [Accepted: 10/01/2023] [Indexed: 11/09/2023]
Abstract
A new and efficient method has been developed to synthesize dispiro[oxindole/acenaphthylenone-benzofuranone]pyrrolidine compounds. This is done by triggering the 1,3-dipolar cycloaddition reaction of azomethine ylides by reacting isatin/acenaphthoquinone with L-picolinic acid/L-proline/sarcosine/L-thioproline/tetrahydroisoquinolines, in a highly regioselective manner in an ionic liquid [DBU][Ac] with 4'-chloro-auron[2-(4-chlorobenzylidene)benzofuran-3(2H)-one]. Single-crystal X-ray diffraction data support the proposed structures of the new compounds. The heterocycles derived from amino acids such as L-picolinic acid, L-proline, and L-thioproline showed significant inhibitory effects against six human solid tumors, including lung, breast, cervix, colon, and others. These new structures were also tested in the active sites of the MDM2 receptor to further study their antiproliferative effects.
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Affiliation(s)
- Tushar R Sutariya
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar Dist. Anand, Gujarat, 388120, India
| | - Gaurangkumar C Brahmbhatt
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar Dist. Anand, Gujarat, 388120, India
| | - Hiralben D Atara
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar Dist. Anand, Gujarat, 388120, India
| | - Narsidas J Parmar
- Department of Chemistry, Sardar Patel University, Vallabh Vidyanagar Dist. Anand, Gujarat, 388120, India.
| | - RajniKant
- Post-Graduate Department of Physics, University of Jammu, Jammu, Tawi, 180006, India
| | - Vivek K Gupta
- Post-Graduate Department of Physics, University of Jammu, Jammu, Tawi, 180006, India
| | - Irene Lagunes
- BioLab, Instituto Universitario de Bio-Orgánica "Antonio González" (IUBO-AG), Universidad de La Laguna, C/Astrofísico Francisco Sánchez 2, 38206, La Laguna, Spain
| | - José M Padrón
- BioLab, Instituto Universitario de Bio-Orgánica "Antonio González" (IUBO-AG), Universidad de La Laguna, C/Astrofísico Francisco Sánchez 2, 38206, La Laguna, Spain
| | - Prashant R Murumkar
- Faculty of Pharmacy, Kalabhavan Campus, The Maharaja Sayajirao University of Baroda, Vadodara, 390 001, India
| | - Mayank Kumar Sharma
- Faculty of Pharmacy, Kalabhavan Campus, The Maharaja Sayajirao University of Baroda, Vadodara, 390 001, India
| | - Mange Ram Yadav
- Faculty of Pharmacy, Kalabhavan Campus, The Maharaja Sayajirao University of Baroda, Vadodara, 390 001, India
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4
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Kanoujia J, Das A, Raina N, Kaur G, Singh SK, Tuli HS, Garg A, Gupta M. Recent advances in BCRP-induced breast cancer resistance treatment with marine-based natural products. IUBMB Life 2023; 75:896-910. [PMID: 37439402 DOI: 10.1002/iub.2764] [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: 12/30/2022] [Accepted: 06/07/2023] [Indexed: 07/14/2023]
Abstract
Breast cancer is the prominent cause of cancer-related death in women globally in terms of incidence and mortality. Despite, recent advances in the management of breast cancer, there are still a lot of cases of resistance to medicines, which is currently one of the biggest problems faced by researchers across the globe. Out of several mechanisms, breast cancer resistance protein (BCRP) arbitrated drug resistance is a major concern. Hormonal, cytotoxic and immunotherapeutic drugs are used in the systemic therapy of breast cancer. It is vital to choose drugs based on the clinical and molecular attributes of the tumor to provide better treatment with greater efficacy and minimal harm. Given the aforementioned necessity, the use of marine flora in treating breast cancer cannot be neglected. The scientists also stressed the value of marine-derived goods in avoiding breast cancer resistance. Future research into the identification of anticancer drugs will heavily draw upon the marine environment's ample supply of marine-derived natural products (MNPs), which have a wide range of biological functions. Cell cycle arrest, induction of apoptosis and anti-angiogenic, anti-proliferative and anti-metastasis actions are all part of their processes. The overview of breast cancer, the mechanisms underlying its resistance, recent clinical trials based on marine-derived products in breast cancer and the use of marine products in the treatment of breast cancer are highlighted in this paper. Moreover, the authors also emphasised the importance of marine-derived products in preventing breast cancer resistance.
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Affiliation(s)
- Jovita Kanoujia
- Amity Institute of Pharmacy, Amity University Madhya Pradesh (AUMP), Gwalior, India
| | - Anjali Das
- Center of Ocean Research, Sathyabama Institute of Science and Technology, Chennai, India
| | - Neha Raina
- Department of Pharmaceutics, Delhi Pharmaceutical Sciences and Research University, New Delhi, India
| | - Ginpreet Kaur
- Department of Pharmacology, Shobhaben Pratapbhai Patel School of Pharmacy & Technology Management, SVKM's NMIMS, Mumbai, India
| | | | - Hardeep S Tuli
- Department of Biotechnology, Maharishi Markandeshwar (Deemed to be University), Mullana-Ambala, India
| | - Ashish Garg
- Department of P.G. Studies and Research in Chemistry and Pharmacy, Rani Durgavati University Jabalpur, Jabalpur, India
| | - Madhu Gupta
- Department of Pharmaceutics, Delhi Pharmaceutical Sciences and Research University, New Delhi, India
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5
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Hammouda MM, Rashed MM, Elattar KM, Osman AMA. Synthetic strategies of heterocycle-integrated pyridopyrimidine scaffolds supported by nano-catalysts. RSC Adv 2023; 13:11600-11634. [PMID: 37063723 PMCID: PMC10103583 DOI: 10.1039/d3ra00922j] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 03/29/2023] [Indexed: 04/18/2023] Open
Abstract
Nano-catalysts are of special character for the synthesis of organic molecules with high efficiency, and exceptional physicochemical properties. The objective of this study was to present an overview of the literature reports concerning the synthetic strategies supported by nano-catalysts and the biological features of heterocycle-integrated pyridopyrimidine scaffolds. The basic topics include the strategies that were adopted to prepare pyrido[2,3-d]pyrimidines and pyrido[1,2-a]pyrimidines. The synthesis of pyrido[2,3-d]pyrimidines was attained through two-, three-, or four-component reactions. The synthesis of spirocyclic systems, including spiro[indoline-pyridopyrimidine] derivatives and arylation reactions, was investigated. The anticipated mechanisms of the diverse target products, in addition to the preparation of the nanocatalysts, were scrutinized. The privileged antimicrobial characteristics, challenges, literature overview, and future prospectives were consistently investigated.
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Affiliation(s)
- Mohamed M Hammouda
- Department of Chemistry, College of Science and Humanities in Al-Kharj, Prince Sattam Bin Abdulaziz University Al-Kharj 11942 Saudi Arabia
- Chemistry Department, Faculty of Science, Mansoura University El-Gomhoria Street Mansoura 35516 Egypt
| | - Marwa M Rashed
- Toxicology Department, Mansoura Hospital, Faculty of Medicine, Mansoura University El-Gomhoria Street Mansoura 35516 Egypt
| | - Khaled M Elattar
- Unit of Genetic Engineering and Biotechnology, Faculty of Science, Mansoura University El-Gomhoria Street Mansoura 35516 Egypt +20-1010655354
| | - Amany M A Osman
- Department of Chemistry, College of Science and Humanities in Al-Kharj, Prince Sattam Bin Abdulaziz University Al-Kharj 11942 Saudi Arabia
- Chemistry Department, Faculty of Science, Menoufia University Shebin El-Koam Egypt
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6
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Lanthanoid-containing polyoxometalate nanocatalysts in the synthesis of bioactive isatin-based compounds. Sci Rep 2022; 12:12004. [PMID: 35835941 PMCID: PMC9283471 DOI: 10.1038/s41598-022-16384-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Accepted: 07/08/2022] [Indexed: 11/10/2022] Open
Abstract
Lanthanoid-containing polyoxometalates (Ln-POMs) have been developed as effective and robust catalysts due to their Lewis acid–base active sites including the oxygen-enriched surfaces of POM and the unique 4f. electron configuration of Ln. As an extension of our interest in Ln-POMs, a series of as-synthesized nanocatalysts K15[Ln(BW11O39)2] (Ln-B2W22, Ln = La, Ce, Nd, Sm, Gd, and Er) synthesized and fully characterized using different techniques. The Ln3+ ion with a big ionic radius was chosen as the Lewis acid center which is sandwiched by two mono-lacunary Keggin [BW11O39]9− units to form Ln-containing sandwiched type cluster. Consequently, the catalytic activity of nanocatalysts with different Ln was examined in the synthesis of bioactive isatin derivatives and compared under the same optimized reaction conditions in terms of yields of obtained products, indicating the superiority of the nano-Gd-B2W22 in the aforementioned simple one-pot reaction. The effects of different dosages of nanocatalyst, type of solvent, reaction time, and reaction temperature in this catalytic system were investigated and the best results were obtained in the presence of 10 mol% of nano-Gd-B2W22 in water for 12 min at the reflux condition.
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7
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Song H, Song J, Yan L, He W, Wang P, Xu Y, Wei H, Xie W. A concise synthesis of (-)-dihydrospirotryprostatin B via tandem Michael addition. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153486] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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8
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Heravi MM, Amiri Z, Kafshdarzadeh K, Zadsirjan V. Synthesis of indole derivatives as prevalent moieties present in selected alkaloids. RSC Adv 2021; 11:33540-33612. [PMID: 35497516 PMCID: PMC9042329 DOI: 10.1039/d1ra05972f] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 09/10/2021] [Indexed: 02/02/2023] Open
Abstract
Indoles are a significant heterocyclic system in natural products and drugs. They are important types of molecules and natural products and play a main role in cell biology. The application of indole derivatives as biologically active compounds for the treatment of cancer cells, microbes, and different types of disorders in the human body has attracted increasing attention in recent years. Indoles, both natural and synthetic, show various biologically vital properties. Owing to the importance of this significant ring system, the investigation of novel methods of synthesis have attracted the attention of the chemical community. In this review, we aim to highlight the construction of indoles as a moiety in selected alkaloids.
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Affiliation(s)
- Majid M Heravi
- Department of Chemistry, School of Physics and Chemistry, Alzahra University Vanak Tehran Iran +98 2188041344 +98 9121329147
| | - Zahra Amiri
- Department of Chemistry, School of Physics and Chemistry, Alzahra University Vanak Tehran Iran +98 2188041344 +98 9121329147
| | - Kosar Kafshdarzadeh
- Department of Chemistry, School of Physics and Chemistry, Alzahra University Vanak Tehran Iran +98 2188041344 +98 9121329147
| | - Vahideh Zadsirjan
- Department of Chemistry, School of Physics and Chemistry, Alzahra University Vanak Tehran Iran +98 2188041344 +98 9121329147
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9
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Chen S, Oliva M, Van Meervelt L, Van der Eycken EV, Sharma UK. Palladium‐Catalyzed Domino Synthesis of 2,3‐Difunctionalized Indoles
via
Migratory Insertion of Isocyanides in Batch and Continuous Flow. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100339] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Su Chen
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC) Department of Chemistry University of Leuven (KU Leuven) Celestijnenlaan 200F B-3001 Leuven Belgium
| | - Monica Oliva
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC) Department of Chemistry University of Leuven (KU Leuven) Celestijnenlaan 200F B-3001 Leuven Belgium
| | - Luc Van Meervelt
- Biomolecular Architecture Department of Chemistry KU Leuven Celestijnenlaan 200F B-3001 Leuven Belgium
| | - Erik V. Van der Eycken
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC) Department of Chemistry University of Leuven (KU Leuven) Celestijnenlaan 200F B-3001 Leuven Belgium
- Peoples' Friendship University of Russia (RUDN University) Miklukho-Maklaya street 6 RU-117198 Moscow Russia
| | - Upendra K. Sharma
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC) Department of Chemistry University of Leuven (KU Leuven) Celestijnenlaan 200F B-3001 Leuven Belgium
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10
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Mudasani G, Paidikondala K, Gundla R, Joseph Maddirala S, Das V. Synthesis and Biological Evaluation of 5′‐Arylspiro[piperidine‐4,3′‐pyrrolo‐[2,3‐
b
]pyridin] Analogues. ChemistrySelect 2021. [DOI: 10.1002/slct.202004719] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Gopal Mudasani
- GVK Biosciences Pvt. Ltd Medicinal Chemistry Laboratory Division, Survey No: 125(Part) & 126, IDA Mallapur Hyderabad 500076 India
- Department of Chemistry, School of Science GITAM University Hyderabad 502102, Telangana India
| | - Kalyani Paidikondala
- Department of Chemistry, School of Science GITAM University Hyderabad 502102, Telangana India
| | - Rambabu Gundla
- Department of Chemistry, School of Science GITAM University Hyderabad 502102, Telangana India
| | - Shambabu Joseph Maddirala
- GVK Biosciences Pvt. Ltd Medicinal Chemistry Laboratory Division, Survey No: 125(Part) & 126, IDA Mallapur Hyderabad 500076 India
| | - Viswanath Das
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry Palacký University Olomouc, Hněvotínská 5 Olomouc 779 00 Czech Republic
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11
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Belov AA, Witte TE, Overy DP, Smith ML. Transcriptome analysis implicates secondary metabolite production, redox reactions, and programmed cell death during allorecognition in Cryphonectria parasitica. G3-GENES GENOMES GENETICS 2021; 11:6025178. [PMID: 33561228 PMCID: PMC7849911 DOI: 10.1093/g3journal/jkaa021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 11/16/2020] [Indexed: 02/04/2023]
Abstract
The underlying molecular mechanisms of programmed cell death associated with fungal allorecognition, a form of innate immunity, remain largely unknown. In this study, transcriptome analysis was used to infer mechanisms activated during barrage formation in vic3-incompatible strains of Cryphonectria parasitica, the chestnut blight fungus. Pronounced differential expression occurred in barraging strains of genes involved in mating pheromone (mf2-1, mf2-2), secondary metabolite production, detoxification (including oxidative stress), apoptosis-related, RNA interference, and HET-domain genes. Evidence for secondary metabolite production and reactive oxygen species (ROS) accumulation is supported through UPLC-HRMS analysis and cytological staining, respectively. Differential expression of mating-related genes and HET-domain genes was further examined by RT-qPCR of incompatible interactions involving each of the six vegetative incompatibility (vic) loci in C. parasitica and revealed distinct recognition process networks. We infer that vegetative incompatibility in C. parasitica activates defence reactions that involve secondary metabolism, resulting in increased toxicity of the extra- and intracellular environment. Accumulation of ROS (and other potential toxins) may result in detoxification failure and activation of apoptosis, sporulation, and the expression of associated pheromone genes. The incompatible reaction leaves abundant traces of a process-specific metabolome as conidiation is initiated.
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Affiliation(s)
- Anatoly A Belov
- Department of Biology, Carleton University, Ottawa, ON K1S 5B6, Canada
| | - Thomas E Witte
- Department of Biology, Carleton University, Ottawa, ON K1S 5B6, Canada
| | - David P Overy
- Agriculture and Agri-Food Canada, Ottawa, ON, K1Y 4X2, Canada
| | - Myron L Smith
- Department of Biology, Carleton University, Ottawa, ON K1S 5B6, Canada
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12
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Abstract
Tryprostatin A and B are prenylated, tryptophan-containing, diketopiperazine natural products, displaying cytotoxic activity through different mechanisms of action. The presence of the 6-methoxy substituent on the indole moiety of tryprostatin A was shown to be essential for the dual inhibition of topoisomerase II and tubulin polymerization. However, the inability to perform late-stage modification of the indole ring has limited the structure–activity relationship studies of this class of natural products. Herein, we describe an efficient chemoenzymatic approach for the late-stage modification of tryprostatin B using a cyclic dipeptide N-prenyltransferase (CdpNPT) from Aspergillus fumigatus, which generates novel analogs functionalized with allylic, benzylic, heterocyclic, and diene moieties. Notably, this biocatalytic functionalizational study revealed high selectivity for the indole C6 position. Seven of the 11 structurally characterized analogs were exclusively C6-alkylated, and the remaining four contained predominant C6-regioisomers. Of the 24 accepted substrates, 10 provided >50% conversion and eight provided 20–50% conversion, with the remaining six giving <20% conversion under standard conditions. This study demonstrates that prenyltransferase-based late-stage diversification enables direct access to previously inaccessible natural product analogs.
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13
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1,3-Dipolar cycloaddition reaction on carbohydrate template: Stereoselective synthesis of glycospiroheterocycles. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Makarem S. Three‐component electrosynthesis of spirooxindole‐pyran derivatives through a simple and efficient method. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.3885] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Somayeh Makarem
- Department of Chemistry, Karaj BranchIslamic Azad University Karaj Iran
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15
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Abdolmohammadi S, Shariati S, Fard NE, Samani A. Aqueous‐Mediated
green synthesis of novel spiro[indole‐quinazoline] derivatives using kit‐6 mesoporous silica coated
Fe
3
O
4
nanoparticles as catalyst. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.3981] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
| | - Shahab Shariati
- Department of Chemistry, Rasht BranchIslamic Azad University Rasht Iran
| | - Narges Elmi Fard
- Young Researchers and Elite Club, South Tehran BranchIslamic Azad University Tehran Iran
| | - Amir Samani
- Department of Chemistry, East Tehran BranchIslamic Azad University Tehran Iran
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16
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Prabhakaran P, Rajakumar P. Regio- and stereoselective synthesis of spiropyrrolidine-oxindole and bis-spiropyrrolizidine-oxindole grafted macrocycles through [3 + 2] cycloaddition of azomethine ylides. RSC Adv 2020; 10:10263-10276. [PMID: 35498613 PMCID: PMC9050375 DOI: 10.1039/c9ra10463a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 02/21/2020] [Indexed: 12/16/2022] Open
Abstract
A convenient and efficient method for the regioselective macrocyclization of triazole bridged spiropyrrolidine-oxindole, and bis-spiropyrrolizidine-oxindole derivatives was accomplished through intra and self-intermolecular [3 + 2] cycloaddition of azomethine ylides. The chalcone isatin precursors 9a-i required for the click reaction were obtained from the reaction of N-alkylazidoisatin 4 and propargyloxy chalcone 8a-i which in turn were obtained by the aldol condensation of propargyloxy salicylaldehyde 6 and substituted methyl ketones 7a-i. The regio- and stereochemical outcome of the cycloadducts were assigned based on 2D NMR and confirmed by single crystal XRD analysis. High efficiency, mild reaction conditions, high regio- and stereoselectivity, atom economy and operational simplicity are the exemplary advantages of the employed macrocyclization procedure.
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Affiliation(s)
- Perumal Prabhakaran
- Department of Organic Chemistry, University of Madras Guindy Campus Chennai-600 025 Tamil Nadu India
| | - Perumal Rajakumar
- Department of Organic Chemistry, University of Madras Guindy Campus Chennai-600 025 Tamil Nadu India
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17
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Abdolmohammadi S, Rasouli Nasrabadi SR, Dabiri MR, Banihashemi Jozdani SM. TiO
2
Nanoparticles Immobilized on Carbon Nanotubes: An Efficient Heterogeneous Catalyst in Cyclocondensation Reaction of Isatins with Malononitrile and 4‐Hydroxycoumarin or 3,4‐Methylenedioxyphenol under Mild Reaction Conditions. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5462] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Shahrzad Abdolmohammadi
- Department of Chemistry, East Tehran BranchIslamic Azad University P.O. Box 18735‐138 Tehran Iran
| | | | - Mohammad Reza Dabiri
- Department of ChemistryK.N. Toosi University of Technology P.O. Box 15875‐4416 Tehran Iran
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18
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Singh R, Singh A, Bhardwaj D. Selective and Solvent‐Free Synthesis of Isoxazole‐Containing Spiro‐Thiazolidinones Using TiO
2
‐SO
3
H as Solid Catalyst. ChemistrySelect 2019. [DOI: 10.1002/slct.201901942] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ruby Singh
- Department of ChemistrySchool of Basic SciencesJaipur National University, Jaipur, Rajasthan India
| | - Aakash Singh
- Department of ChemistrySchool of Basic SciencesJaipur National University, Jaipur, Rajasthan India
| | - Diksha Bhardwaj
- Department of ChemistrySchool of Basic SciencesJaipur National University, Jaipur, Rajasthan India
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19
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Bandari C, Scull EM, Bavineni T, Nimmo SL, Gardner ED, Bensen RC, Burgett AW, Singh S. FgaPT2, a biocatalytic tool for alkyl-diversification of indole natural products. MEDCHEMCOMM 2019; 10:1465-1475. [PMID: 31534661 PMCID: PMC6748273 DOI: 10.1039/c9md00177h] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 06/05/2019] [Indexed: 01/02/2023]
Abstract
Demonstration of FgaPT2 catalyzed alkyl-diversification of indole containing natural products.
Aromatic prenyltransferases from natural product biosynthetic pathways display relaxed specificity for their aromatic substrates. While a growing body of evidence suggests aromatic prenyltransferases to be more tolerant towards their alkyl-donor substrates, most studies aimed at probing their donor-substrate specificity are limited to only a small set of alkyl pyrophosphate donors, restricting their broader utility as biocatalysts for synthetic applications. Here, we assess the donor substrate specificity of an l-tryptophan C4-prenyltransferase, also known as C4-dimethylallyltryptophan synthase, FgaPT2 from Aspergillus fumigatus, using an array of 34 synthetic unnatural alkyl-pyrophosphate analogues, and demonstrate FgaPT2 can catalyze the transfer of 25 of the 34 non-native alkyl groups from their corresponding synthetic alkyl-pyrophosphate analogues at N1, C3, C4 and C5 position of tryptophan in a normal and reverse manner. The kinetic studies and regio-chemical analysis of the alkyl-l-tryptophan products suggest that the alkyl-donor transfer by FgaPT2 is a function of the stability of the carbocation and the steric factors in the active site of the enzyme. Further, to demonstrate the biocatalytic utility of FgaPT2, this study also highlights the FgaPT2-catalyzed synthesis of a small set of alkyl-diversified indolocarbazole analogues. These results reveal FgaPT2 to be more tolerant to diverse non-native alkyl-donor substrates beyond their known acceptor substrate promiscuity and set the stage for its development as a novel biocatalytic tool for the differential alkylation of natural products for drug discovery and other synthetic applications.
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Affiliation(s)
- Chandrasekhar Bandari
- Department of Chemistry and Biochemistry , University of Oklahoma , Stephenson Life Sciences Research Center , 101 Stephenson Parkway , Norman , Oklahoma 73019 , USA .
| | - Erin M Scull
- Department of Chemistry and Biochemistry , University of Oklahoma , Stephenson Life Sciences Research Center , 101 Stephenson Parkway , Norman , Oklahoma 73019 , USA .
| | - Tejaswi Bavineni
- Department of Chemistry and Biochemistry , University of Oklahoma , Stephenson Life Sciences Research Center , 101 Stephenson Parkway , Norman , Oklahoma 73019 , USA .
| | - Susan L Nimmo
- Department of Chemistry and Biochemistry , University of Oklahoma , Stephenson Life Sciences Research Center , 101 Stephenson Parkway , Norman , Oklahoma 73019 , USA .
| | - Eric D Gardner
- Department of Chemistry and Biochemistry , University of Oklahoma , Stephenson Life Sciences Research Center , 101 Stephenson Parkway , Norman , Oklahoma 73019 , USA .
| | - Ryan C Bensen
- Department of Chemistry and Biochemistry , University of Oklahoma , Stephenson Life Sciences Research Center , 101 Stephenson Parkway , Norman , Oklahoma 73019 , USA .
| | - Anthony W Burgett
- Department of Chemistry and Biochemistry , University of Oklahoma , Stephenson Life Sciences Research Center , 101 Stephenson Parkway , Norman , Oklahoma 73019 , USA .
| | - Shanteri Singh
- Department of Chemistry and Biochemistry , University of Oklahoma , Stephenson Life Sciences Research Center , 101 Stephenson Parkway , Norman , Oklahoma 73019 , USA .
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20
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Umar Basha KN, Gnanamani S. An Efficient and Easy Method for the One‐pot Synthesis of Spirooxindoles in the Presence of Na
2
CO
3. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3580] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Khadhar Navaz Umar Basha
- Sona Advanced Organic Materials Laboratory, Department of ChemistrySona College of Technology Junction Main Road Salem Tamil Nadu 636005 India
| | - Shanthi Gnanamani
- Sona Advanced Organic Materials Laboratory, Department of ChemistrySona College of Technology Junction Main Road Salem Tamil Nadu 636005 India
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21
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Rahimi F, Bayat M, Hosseini H. Synthesis of spiroimidazopyridineoxindole, spiropyridopyrimidineoxindole and spiropyridodiazepineoxindole derivatives based on heterocyclic ketene aminals via a four-component reaction. RSC Adv 2019; 9:16384-16389. [PMID: 35516376 PMCID: PMC9064345 DOI: 10.1039/c8ra10379h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 05/13/2019] [Indexed: 11/21/2022] Open
Abstract
Here, we have described the synthesis of novel spiropyridineoxindole derivatives containing a pyridone ring via a four-component reaction between various diamines, 1,1-bis(methylthio)-2-nitroethylene, isatin derivatives and Meldrum's acid in the presence of p-toluenesulfonic acid. This protocol has some advantages such as the availability of starting materials, good yields, facile separation of products, the use of ethanol as an environmentally benign solvent and easy formation of three new bonds in one operation.
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Affiliation(s)
- Fatemeh Rahimi
- Department of Chemistry, Faculty of Science, Imam Khomeini International University Qazvin Iran +98 28 33780040
| | - Mohammad Bayat
- Department of Chemistry, Faculty of Science, Imam Khomeini International University Qazvin Iran +98 28 33780040
| | - Hajar Hosseini
- Department of Chemistry, Faculty of Science, Imam Khomeini International University Qazvin Iran +98 28 33780040
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22
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Ou W, Zhang G, Wu J, Su C. Photocatalytic Cascade Radical Cyclization Approach to Bioactive Indoline-Alkaloids over Donor–Acceptor Type Conjugated Microporous Polymer. ACS Catal 2019. [DOI: 10.1021/acscatal.9b00693] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Wei Ou
- SZU-NUS Collaborative Center and International Collaborative Laboratory of 2D Materials for Optoelectronic Science & Technology, Engineering Technology Research Center for 2D Materials Information Functional Devices and Systems of Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Guoqiang Zhang
- SZU-NUS Collaborative Center and International Collaborative Laboratory of 2D Materials for Optoelectronic Science & Technology, Engineering Technology Research Center for 2D Materials Information Functional Devices and Systems of Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Jie Wu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Chenliang Su
- SZU-NUS Collaborative Center and International Collaborative Laboratory of 2D Materials for Optoelectronic Science & Technology, Engineering Technology Research Center for 2D Materials Information Functional Devices and Systems of Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
- Engineering Technology Research Center for 2D Material Information Function Devices and Systems of Guangdong Province, Shenzhen University, Shenzhen 518060, China
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23
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Su R, Yang XH, Hu M, Wang QA, Li JH. Annulation Cascades of N-Allyl- N-((2-bromoaryl)ethynyl)amides Involving C-H Functionalization. Org Lett 2019; 21:2786-2789. [PMID: 30939026 DOI: 10.1021/acs.orglett.9b00740] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An annulation cascades of N-allyl- N-((2-bromoaryl)ethynyl)amides with terminal alkynes or 1,3-dicarbonyls involving C-H functionalization for producing 2,3-functionalized indoles has been first developed by means of Cu catalysis. The method is enabled by the formation of the ketenimine intermediates to deliver 2,3-disubstituted indoles through a sequence of aza-Claisen rearrangement, C-H functionalization, Ullmann C-N coupling, and cyclization.
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Affiliation(s)
- Rongkui Su
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle , Nanchang Hangkong University , Nanchang 330063 , China.,Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, School of Metallurgy and Environment , Central South University , Changsha 410083 , China
| | - Xu-Heng Yang
- College of Arts and Sciences , National University of Defense Technology , Changsha 410073 , China
| | - Ming Hu
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle , Nanchang Hangkong University , Nanchang 330063 , China
| | - Qiu-An Wang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle , Nanchang Hangkong University , Nanchang 330063 , China
| | - Jin-Heng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle , Nanchang Hangkong University , Nanchang 330063 , China
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24
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Anti-tubulin agents of natural origin: Targeting taxol, vinca, and colchicine binding domains. Eur J Med Chem 2019; 171:310-331. [PMID: 30953881 DOI: 10.1016/j.ejmech.2019.03.025] [Citation(s) in RCA: 120] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 03/09/2019] [Accepted: 03/10/2019] [Indexed: 12/24/2022]
Abstract
Microtubules are a protein which is made of α- and β-heterodimer. It is one of the main components of the cell which play a vital role in cell division especially in G2/M-phase. It exists in equilibrium dynamic of polymerization and depolymerization of α- and β-heterodimer. It is one of the best targets for developing anti-cancer drugs. Various natural occurring molecules are well known for their anti-tubulin effect such as vinca, paclitaxel, combretastatin, colchicine etc. These microtubule-targeted drugs are acted through two processes (i) inhibiting depolymerization of tubulin (tubulin stabilizing agents) and (ii) inhibiting polymerization of tubulin (tubulin destabilizing agents). Now days, various binding domains have been explore through which these molecules are binding to tubulin but the three major binding domain of tubulin are taxol, vinca and colchicine binding domain. The present article mainly focus on the classification of various naturally occurring compounds on the basis of their inhibition processes (depolymerization and polymerization) and the site of interaction (targets taxol, vinca and colchicine binding domain) which has been hitherto reported. By placing all the naturally occurring taxol, vinca and colchicine binding site analogues at one place makes a better understanding of the tubulin interactions with known natural tubulin binders that would helps in the discovery of new and potent natural, semi-synthetic and synthetic analogues for treating cancer.
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25
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Xi YK, Zhang H, Li RX, Kang SY, Li J, Li Y. Total Synthesis of Spirotryprostatins through Organomediated Intramolecular Umpolung Cyclization. Chemistry 2019; 25:3005-3009. [DOI: 10.1002/chem.201806411] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Indexed: 01/04/2023]
Affiliation(s)
- Yong-Kai Xi
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan province, State Key Laboratory for, Conservation and Utilization of Bio-Resources in Yunnan; School of, Chemical Science and Technology; Yunnan University; Kunming Yunnan 650091 P. R. China
| | - Hongbin Zhang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan province, State Key Laboratory for, Conservation and Utilization of Bio-Resources in Yunnan; School of, Chemical Science and Technology; Yunnan University; Kunming Yunnan 650091 P. R. China
| | - Rui-Xi Li
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan province, State Key Laboratory for, Conservation and Utilization of Bio-Resources in Yunnan; School of, Chemical Science and Technology; Yunnan University; Kunming Yunnan 650091 P. R. China
| | - Shi-Yuan Kang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan province, State Key Laboratory for, Conservation and Utilization of Bio-Resources in Yunnan; School of, Chemical Science and Technology; Yunnan University; Kunming Yunnan 650091 P. R. China
| | - Jin Li
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan province, State Key Laboratory for, Conservation and Utilization of Bio-Resources in Yunnan; School of, Chemical Science and Technology; Yunnan University; Kunming Yunnan 650091 P. R. China
| | - Yan Li
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan province, State Key Laboratory for, Conservation and Utilization of Bio-Resources in Yunnan; School of, Chemical Science and Technology; Yunnan University; Kunming Yunnan 650091 P. R. China
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26
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La Regina G, Coluccia A, Naccarato V, Silvestri R. Towards modern anticancer agents that interact with tubulin. Eur J Pharm Sci 2019; 131:58-68. [PMID: 30690185 DOI: 10.1016/j.ejps.2019.01.028] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 12/19/2018] [Accepted: 01/22/2019] [Indexed: 11/25/2022]
Abstract
Tubulin is the primary target of an ever growing number of natural, semisynthetic and synthetic products as potential anticancer agents. The mechanisms of interaction of these molecules with tubulin are varied. These drug classes have shown to inhibit effectively several cancer types with IC50 from midmicromolar to low nanomolar concentrations. However, some limiting obstacles still remain, such as the development of multidrug resistance and cytotoxicity. We have reviewed recent advances in different classes of tubulin binding agents, including colchicine site agents, Vinca alkaloids, tryprostatins, moroidin, hemiasterlin, diazonamide, taxanes, epothilones and laulimalide.
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Affiliation(s)
- Giuseppe La Regina
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, Laboratory affiliated to Istituto Pasteur Italia - Fondazione Cenci Bolognetti, Piazzale Aldo Moro 5, I-00185 Roma, Italy
| | - Antonio Coluccia
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, Laboratory affiliated to Istituto Pasteur Italia - Fondazione Cenci Bolognetti, Piazzale Aldo Moro 5, I-00185 Roma, Italy
| | - Valentina Naccarato
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, Laboratory affiliated to Istituto Pasteur Italia - Fondazione Cenci Bolognetti, Piazzale Aldo Moro 5, I-00185 Roma, Italy
| | - Romano Silvestri
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, Laboratory affiliated to Istituto Pasteur Italia - Fondazione Cenci Bolognetti, Piazzale Aldo Moro 5, I-00185 Roma, Italy.
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27
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Huisman M, Rahaman M, Asad S, Oehm S, Novin S, Rheingold AL, Hossain MM. Total Synthesis of Tryprostatin B: Synthesis and Asymmetric Phase-Transfer-Catalyzed Reaction of Prenylated Gramine Salt. Org Lett 2018; 21:134-137. [PMID: 30561217 DOI: 10.1021/acs.orglett.8b03593] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
A concise and efficient total synthesis of microtubule inhibitor tryprostatin B (1) is described. The key step is the preparation of a diprenylated gramine salt 9a. In this step, the prenyl group is incorporated at the 2-position of the indole moiety by direct lithiation of the Boc-protected gramine. We also developed and optimized the asymmetric phase-transfer-catalyzed reaction with salt 9a to provide the C2-prenyl tryptophan intermediate 2 resulting in 93% enantiomeric excess (ee) and 65% yield. The total synthesis of 1 is done in six steps with 35% overall yield.
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Affiliation(s)
- Matthew Huisman
- Department of Chemistry and Biochemistry , University of Wisconsin-Milwaukee , 3210 North Cramer Street , Milwaukee , Wisconsin 53211-3029 , United States
| | - Mizzanoor Rahaman
- Department of Chemistry and Biochemistry , University of Wisconsin-Milwaukee , 3210 North Cramer Street , Milwaukee , Wisconsin 53211-3029 , United States
| | - Sharif Asad
- Department of Chemistry and Biochemistry , University of Wisconsin-Milwaukee , 3210 North Cramer Street , Milwaukee , Wisconsin 53211-3029 , United States
| | - Sarah Oehm
- Department of Chemistry and Biochemistry , University of Wisconsin-Milwaukee , 3210 North Cramer Street , Milwaukee , Wisconsin 53211-3029 , United States
| | - Sherwin Novin
- Department of Chemistry and Biochemistry , University of Wisconsin-Milwaukee , 3210 North Cramer Street , Milwaukee , Wisconsin 53211-3029 , United States
| | - Arnold L Rheingold
- Department of Chemistry and Biochemistry , University of California San Diego , 9500 Gilman Drive , La Jolla , California 92093 , United States
| | - M Mahmun Hossain
- Department of Chemistry and Biochemistry , University of Wisconsin-Milwaukee , 3210 North Cramer Street , Milwaukee , Wisconsin 53211-3029 , United States
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28
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Chauhan J, Dasgupta M, Luthra T, Awasthi A, Tripathy S, Banerjee A, Paul S, Nag D, Chakrabarti S, Chakrabarti G, Sen S. Design, synthesis and biological evaluation of a novel library of antimitotic C2-aroyl/arylimino tryptamine derivatives that are also potent inhibitors of indoleamine-2, 3-dioxygenase (IDO). Eur J Pharm Sci 2018; 124:249-265. [DOI: 10.1016/j.ejps.2018.08.033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Revised: 08/16/2018] [Accepted: 08/23/2018] [Indexed: 01/26/2023]
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29
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Hussein EM, Moussa Z, El Guesmi N, Ahmed SA. Facile access to regio- and stereoselective synthesis of highly functionalized spiro[indoline-3,2'-pyrrolidines] incorporating a pyrene moiety: experimental, photophysical and theoretical approach. RSC Adv 2018; 8:24116-24127. [PMID: 35539188 PMCID: PMC9081859 DOI: 10.1039/c8ra04312d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 06/14/2018] [Indexed: 11/29/2022] Open
Abstract
The regio- and stereochemical polar [3 + 2] cycloaddition of azomethine ylides, which were generated in situ by the reaction of isatin and sarcosine or benzylamine, with (E)-3-aryl-1-(pyren-1-yl)prop-2-en-1-ones as dipolarophiles, was studied using experimental and theoretical methods. The chemical structures and relative configurations of all products have been fully established by 1D and 2D homonuclear and heteronuclear correlation NMR spectrometry. The effects of the electronic and steric factors of the reactions were discussed. The photophysical properties of the synthesized spiro[indoline-3,2'-pyrrolidin]-2-ones and 5'-phenyl-spiro[indoline-3,2'-pyrrolidin]-2-ones were studied. The mechanism of the reactions was investigated using global and local reactivity indices and frontier molecular orbital (FMO) analysis at the B3LYP/6-31G level of theory. The relationship between the electrophilicity index ω of the dipolarophiles and the Hammett constant σ p has been studied. The theoretical scale of reactivity correctly explains the electrophilic activation/deactivation effects promoted by electron-withdrawing and electron-releasing substituents in the para-position of the dipolarophiles.
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Affiliation(s)
- Essam M Hussein
- Chemistry Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University 21955 Makkah Saudi Arabia
- Department of Chemistry, Faculty of Science, Assiut University 71516 Assiut Egypt
| | - Ziad Moussa
- Department of Chemistry, Faculty of Science, Taibah University P.O. Box 30002 Almadinah Almunawarrah Saudi Arabia
| | - Nizar El Guesmi
- Chemistry Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University 21955 Makkah Saudi Arabia
- Département de chimie, Faculté des Sciences de Monastir, Avenue de l'Environnement 5019 Monastir Tunisia
| | - Saleh A Ahmed
- Chemistry Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University 21955 Makkah Saudi Arabia
- Department of Chemistry, Faculty of Science, Assiut University 71516 Assiut Egypt
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30
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Choera T, Zelante T, Romani L, Keller NP. A Multifaceted Role of Tryptophan Metabolism and Indoleamine 2,3-Dioxygenase Activity in Aspergillus fumigatus-Host Interactions. Front Immunol 2018; 8:1996. [PMID: 29403477 PMCID: PMC5786828 DOI: 10.3389/fimmu.2017.01996] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Accepted: 12/22/2017] [Indexed: 12/19/2022] Open
Abstract
Aspergillus fumigatus is the most prevalent filamentous fungal pathogen of humans, causing either severe allergic bronchopulmonary aspergillosis or often fatal invasive pulmonary aspergillosis (IPA) in individuals with hyper- or hypo-immune deficiencies, respectively. Disease is primarily initiated upon the inhalation of the ubiquitous airborne conidia—the initial inoculum produced by A. fumigatus—which are complete developmental units with an ability to exploit diverse environments, ranging from agricultural composts to animal lungs. Upon infection, conidia initially rely on their own metabolic processes for survival in the host’s lungs, a nutritionally limiting environment. One such nutritional limitation is the availability of aromatic amino acids (AAAs) as animals lack the enzymes to synthesize tryptophan (Trp) and phenylalanine and only produce tyrosine from dietary phenylalanine. However, A. fumigatus produces all three AAAs through the shikimate–chorismate pathway, where they play a critical role in fungal growth and development and in yielding many downstream metabolites. The downstream metabolites of Trp in A. fumigatus include the immunomodulatory kynurenine derived from indoleamine 2,3-dioxygenase (IDO) and toxins such as fumiquinazolines, gliotoxin, and fumitremorgins. Host IDO activity and/or host/microbe-derived kynurenines are increasingly correlated with many Aspergillus diseases including IPA and infections of chronic granulomatous disease patients. In this review, we will describe the potential metabolic cross talk between the host and the pathogen, specifically focusing on Trp metabolism, the implications for therapeutics, and the recent studies on the coevolution of host and microbe IDO activation in regulating inflammation, while controlling infection.
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Affiliation(s)
- Tsokyi Choera
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, WI, United States
| | - Teresa Zelante
- Department of Experimental Medicine, University of Perugia, Perugia, Italy
| | - Luigina Romani
- Department of Experimental Medicine, University of Perugia, Perugia, Italy
| | - Nancy P Keller
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, WI, United States.,Department of Bacteriology, University of Wisconsin-Madison, Madison, WI, United States
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31
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Awakawa T, Abe I. Biosynthesis of the teleocidin-type terpenoid indole alkaloids. Org Biomol Chem 2018; 16:4746-4752. [DOI: 10.1039/c8ob00803e] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Teleocidin B is a terpenoid indole alkaloid with unique structures including indolactam and cyclic terpenoid, and is a strong protein kinase C activator. In this review, we describe the isolation and biosynthetic studies of teleocidins.
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Affiliation(s)
- Takayoshi Awakawa
- Graduate School of Pharmaceutical Sciences
- The University of Tokyo
- Tokyo
- Japan
| | - Ikuro Abe
- Graduate School of Pharmaceutical Sciences
- The University of Tokyo
- Tokyo
- Japan
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32
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Murugesan A, Gengan RM, Rajamanikandan R, Ilanchelian M. One-pot synthesis via 1, 3-dipolar cycloaddition reaction to piperazinyl-quinolinyl dispiro heterocyclic derivatives and spectrofluorometric and molecular docking studies on their binding with human serum albumin. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.08.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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33
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SO3H-functionalized MCM-41 as an efficient catalyst for the combinatorial synthesis of 1H-pyrazolo-[3,4-b]pyridines and spiro-pyrazolo-[3,4-b]pyridines. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2017. [DOI: 10.1007/s13738-017-1099-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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34
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Gao X, Yang Z, Hao WJ, Jiang B, Tu SJ. Three-Component Synthesis of Spiro[indoline-3,4′-pyrazolo[3,4-b
]pyridines] under Microwave Irradiation. J Heterocycl Chem 2017. [DOI: 10.1002/jhet.2840] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xia Gao
- School of Chemistry and Chemical Engineering; Jiangsu Normal University; Xuzhou Jiangsu 221116 People's Republic of China
- Jiangsu Provincial Xuzhou Pharmaceutical Vocational College; Xuzhou Jiangsu People's Republic of China
| | - Zheng Yang
- School of Chemistry and Chemical Engineering; Jiangsu Normal University; Xuzhou Jiangsu 221116 People's Republic of China
| | - Wen-Juan Hao
- School of Chemistry and Chemical Engineering; Jiangsu Normal University; Xuzhou Jiangsu 221116 People's Republic of China
| | - Bo Jiang
- School of Chemistry and Chemical Engineering; Jiangsu Normal University; Xuzhou Jiangsu 221116 People's Republic of China
| | - Shu-Jiang Tu
- School of Chemistry and Chemical Engineering; Jiangsu Normal University; Xuzhou Jiangsu 221116 People's Republic of China
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35
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Rajanarendar E, Thirupathaiah K, Ramakrishna S, Nagaraju D, Kishore B. A Facile, Atom-Economical, and One-Pot Pseudo Four-Component Synthesis of Isoxazolylspiro[diindeno[1,2- b;2′,1′- e]pyridine-11,3′-indoline]-2′,10,12-triones Catalyzed by pTSA. J Heterocycl Chem 2017. [DOI: 10.1002/jhet.2650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | | | - Saini Ramakrishna
- Department of Chemistry; Kakatiya University; Warangal 506009 Telangana India
| | - Dharavath Nagaraju
- Department of Chemistry; Kakatiya University; Warangal 506009 Telangana India
| | - Baireddy Kishore
- Department of Chemistry; Kakatiya University; Warangal 506009 Telangana India
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36
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Tang LW, Li C, Zhao BJ, Lan L, Zhang M, Zhou ZM. Diastereoselective construction of spirocyclic pyrrolidines bearing two quaternary centers via Cu II -P, N-Ligand catalyzed 1,3-dipolar cycloaddition. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.01.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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37
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Bailon-Moscoso N, Cevallos-Solorzano G, Romero-Benavides JC, Orellana MIR. Natural Compounds as Modulators of Cell Cycle Arrest: Application for Anticancer Chemotherapies. Curr Genomics 2017; 18:106-131. [PMID: 28367072 PMCID: PMC5345333 DOI: 10.2174/1389202917666160808125645] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Revised: 11/13/2015] [Accepted: 11/20/2015] [Indexed: 12/22/2022] Open
Abstract
Natural compounds from various plants, microorganisms and marine species play an important role in the discovery novel components that can be successfully used in numerous biomedical applications, including anticancer therapeutics. Since uncontrolled and rapid cell division is a hallmark of cancer, unraveling the molecular mechanisms underlying mitosis is key to understanding how various natural compounds might function as inhibitors of cell cycle progression. A number of natural compounds that inhibit the cell cycle arrest have proven effective for killing cancer cells in vitro, in vivo and in clinical settings. Significant advances that have been recently made in the understanding of molecular mechanisms underlying the cell cycle regulation using the chemotherapeutic agents is of great importance for improving the efficacy of targeted therapeutics and overcoming resistance to anticancer drugs, especially of natural origin, which inhibit the activities of cyclins and cyclin-dependent kinases, as well as other proteins and enzymes involved in proper regulation of cell cycle leading to controlled cell proliferation.
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38
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Safari E, Maryamabadi A, Hasaninejad A. Highly efficient, one-pot synthesis of novel bis-spirooxindoles with skeletal diversity via sequential multi-component reaction in PEG-400 as a biodegradable solvent. RSC Adv 2017. [DOI: 10.1039/c7ra06017c] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A green, efficient, multi-component protocol has been developed for synthesis of novel bis-spirooxindoles in short reaction time, easy workup and excellent yields.
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Affiliation(s)
- Ensieh Safari
- Department of Chemistry
- Faculty of Sciences
- Persian Gulf University
- Bushehr, 7516913817
- Iran
| | - Ammar Maryamabadi
- Department of Chemistry
- Faculty of Sciences
- Persian Gulf University
- Bushehr, 7516913817
- Iran
| | - Alireza Hasaninejad
- Department of Chemistry
- Faculty of Sciences
- Persian Gulf University
- Bushehr, 7516913817
- Iran
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39
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Shimokawa J, Fukuyama T. Synthetic Studies on Heteropolycyclic Natural Products: Strategies via Novel Reactions and Reactivities. J SYN ORG CHEM JPN 2017. [DOI: 10.5059/yukigoseikyokaishi.75.1115] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
| | - Tohru Fukuyama
- Graduate School of Pharmaceutical Sciences, Nagoya University
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40
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Goli-Jolodar O, Shirini F, Seddighi M. Introduction of a novel basic ionic liquid containing dual basic functional groups for the efficient synthesis of spiro-4H-pyrans. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.10.093] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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41
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Javanshir S, Saghiran Pourshiri N, Dolatkhah Z, Farhadnia M. Caspian Isinglass, a versatile and sustainable biocatalyst for domino synthesis of spirooxindoles and spiroacenaphthylenes in water. MONATSHEFTE FUR CHEMIE 2016. [DOI: 10.1007/s00706-016-1779-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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42
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Sumesh RV, Muthu M, Almansour AI, Suresh Kumar R, Arumugam N, Athimoolam S, Jeya Yasmi Prabha EA, Kumar RR. Multicomponent Dipolar Cycloaddition Strategy: Combinatorial Synthesis of Novel Spiro-Tethered Pyrazolo[3,4-b]quinoline Hybrid Heterocycles. ACS COMBINATORIAL SCIENCE 2016; 18:262-70. [PMID: 27027478 DOI: 10.1021/acscombsci.6b00003] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The stereoselective syntheses of a library of novel spiro-tethered pyrazolo[3,4-b]quinoline-pyrrolidine/pyrrolothiazole/indolizine-oxindole/acenaphthene hybrid heterocycles have been achieved through the 1,3-dipolar cycloaddition of azomethine ylides generated in situ from α-amino acids and 1,2-diketones to dipolarophiles derived from pyrazolo[3,4-b]quinoline derivatives.
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Affiliation(s)
- Remani Vasudevan Sumesh
- Department
of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, Tamil Nadu India
| | - Muthumani Muthu
- Department
of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, Tamil Nadu India
| | - Abdulrahman I. Almansour
- Department
of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Raju Suresh Kumar
- Department
of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Natarajan Arumugam
- Department
of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - S. Athimoolam
- Department
of Physics, University College of Engineering, Anna University Constituent College, Nagercoil 629 004, Tamil
Nadu India
| | - E. Arockia Jeya Yasmi Prabha
- Department
of Physics, University College of Engineering, Anna University Constituent College, Nagercoil 629 004, Tamil
Nadu India
| | - Raju Ranjith Kumar
- Department
of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, Tamil Nadu India
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43
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Rani MA, Kumar SV, Roja SS, Almansour AI, Kumar RS, Athimoolam S, Kumar RR. Synthesis of highly functionalized 2-thiaspiro[4.5]deca-6,8-dienes via atom efficient tandem Michael addition/Thorpe–Ziegler cyclization. RSC Adv 2016. [DOI: 10.1039/c6ra05572a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The reaction of 2,4-bis((Z)-arylidene)dihydrothiophen-3(2H)-ones and 2-(1-arylethylidene)malononitriles proceeded through a tandem sequence of reactions in a single step affording 2-thiaspiro[4.5]deca-6,8-dienes in quantitative yields.
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Affiliation(s)
- Mani Anusha Rani
- Department of Organic Chemistry
- School of Chemistry
- Madurai Kamaraj University
- Madurai-625 021
- India
| | - Sundaravel Vivek Kumar
- Department of Organic Chemistry
- School of Chemistry
- Madurai Kamaraj University
- Madurai-625 021
- India
| | - Somi Santharam Roja
- Department of Organic Chemistry
- School of Chemistry
- Madurai Kamaraj University
- Madurai-625 021
- India
| | | | - Raju Suresh Kumar
- Department of Chemistry
- College of Science
- King Saud University
- Riyadh 11451
- Saudi Arabia
| | - S. Athimoolam
- Department of Physics
- University College of Engineering
- Anna University Constituent College
- Nagercoil 629 004
- India
| | - Raju Ranjith Kumar
- Department of Organic Chemistry
- School of Chemistry
- Madurai Kamaraj University
- Madurai-625 021
- India
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44
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Sulfanilic acid functionalized mesoporous SBA-15: A water-tolerant solid acid catalyst for the synthesis of uracil fused spirooxindoles as antioxidant agents. J CHEM SCI 2015. [DOI: 10.1007/s12039-015-0910-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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45
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Wauters I, Goossens H, Delbeke E, Muylaert K, Roman BI, Van Hecke K, Van Speybroeck V, Stevens CV. Beyond the Diketopiperazine Family with Alternatively Bridged Brevianamide F Analogues. J Org Chem 2015; 80:8046-54. [PMID: 26193166 DOI: 10.1021/acs.joc.5b01161] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A method for the preparation of 3,5-bridged piperazin-2-ones from a tryptophan-proline-based diketopiperazine is described using diphosgene to induce the ring closure. Density functional theory calculations were conducted to study the mechanism of this C-C bond formation. Several derivatives of the thus obtained α-chloroamine were synthesized by substitution of the chlorine atom using a range of O-, N-, S-, and C-nucleophiles. This novel class of brevianamide F analogues possess interesting breast cancer resistance protein inhibitory activity.
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Affiliation(s)
- I Wauters
- †Research Group SynBioC, Department of Sustainable Organic Chemistry and Technology, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
| | - H Goossens
- ‡Center for Molecular Modelling, Ghent University, Technologiepark 903, 9000 Ghent, Belgium
| | - E Delbeke
- †Research Group SynBioC, Department of Sustainable Organic Chemistry and Technology, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
| | - K Muylaert
- †Research Group SynBioC, Department of Sustainable Organic Chemistry and Technology, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
| | - B I Roman
- †Research Group SynBioC, Department of Sustainable Organic Chemistry and Technology, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
| | - K Van Hecke
- §XStruct, Department of Inorganic and Physical Chemistry, Ghent University, Krijgslaan 281, S3, 9000 Ghent, Belgium
| | - V Van Speybroeck
- ‡Center for Molecular Modelling, Ghent University, Technologiepark 903, 9000 Ghent, Belgium
| | - C V Stevens
- †Research Group SynBioC, Department of Sustainable Organic Chemistry and Technology, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
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46
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Ravikumar K, Sridhar B, Nanubolu JB, Karthik G, Reddy BVS. Three structures of dispirooxindole derivatives generatedin situthrough a three-component one-pot strategy with complete regio- and stereoselectivity. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2015; 71:721-7. [DOI: 10.1107/s2053229615013273] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 07/10/2015] [Indexed: 11/10/2022]
Abstract
The challenging molecular architecture of spirooxindoles is appealing to chemists because it evokes novel synthetic strategies that address configurational demands and provides platforms for further reaction development. The [3+2] cycloaddition of the carbonyl ylide with arylideneoxindoleviaa five-membered cyclic transition state gave a novel class of dispirooxindole derivatives, namelytert-butyl 4′-(4-bromophenyl)-1′′-methyl-2,2′′-dioxo-5′-phenyl-4′,5′-dihydrodispiro[indoline-3,2′-furan-3′,3′′-indoline]-1-carboxylate, C36H31BrN2O, (Ia), 5′-(4-bromophenyl)-1,1′′-dimethyl-4′-phenyl-4′,5′-dihydrodispiro[indoline-3,2′-furan-3′,3′′-indoline]-2,2′′-dione, C32H25BrN2O3, (Ib), andtert-butyl 1′′-methyl-2,2′′-dioxo-4′-phenyl-5′-(p-tolyl)-4′,5′-dihydrodispiro[indoline-3,2′-furan-3′,3′′-indoline]-1-carboxylate, C37H34N2O5, (Ic). Crystal structure analyses of these dispirooxindoles revealed the formation of two diastereoisomers selectively and confirmed their relative stereochemistry (SSSRandRRRS). In all three structures, intramolecular C—H...O and π–π interactions between oxindole and dihydrofuran rings are the key factors governing the regio- and stereoselectivity, and in the absence of conventional hydrogen bonds, their crystal packings are strengthened by intermolecular C—H...π interactions.
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47
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Shah GR, Wesener SR, Cheng YQ. Engineered Production of Tryprostatins in E. coli through Reconstitution of a Partial ftm Biosynthetic Gene Cluster from Aspergillus sp. JACOBS JOURNAL OF BIOTECHNOLOGY AND BIOENGINEERING 2015; 2:009. [PMID: 26640821 PMCID: PMC4670043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Tryprostatin A and B are indole alkaloid-based fungal products that inhibit mammalian cell cycle at the G2/M phase. They are biosynthetic intermediates of fumitremorgins produced by a complex pathway involving a nonribosomal peptide synthetase (FtmA), a prenyltransferase (FtmB), a cytochrome P450 hydroxylase (FtmC), an O-methyltransferase (FtmD), and several additional enzymes. A partial fumitremorgin biosynthetic gene cluster (ftmABCD) from Aspergillus sp. was reconstituted in Escherichia coli BL21(DE3) cells, with or without the co-expression of an Sfp-type phosphopantetheinyltransferase gene (Cv_sfp) from Chromobacterium violaceum No. 968. Several recombinant E. coli strains produced tryprostatin B up to 106 mg/l or tryprostatin A up to 76 mg/l in the fermentation broth under aerobic condition, providing an effective way to prepare those pharmaceutically important natural products biologically.
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Affiliation(s)
- Gopitkumar R Shah
- Department of Biological Sciences, University of Wisconsin–Milwaukee, PO Box 413, Milwaukee, Wisconsin 53201, USA
| | - Shane R. Wesener
- Department of Biological Sciences, University of Wisconsin–Milwaukee, PO Box 413, Milwaukee, Wisconsin 53201, USA
| | - Yi-Qiang Cheng
- Department of Biological Sciences, University of Wisconsin–Milwaukee, PO Box 413, Milwaukee, Wisconsin 53201, USA
- UNT System College of Pharmacy, University of North Texas Health Science Center, 3500 Camp Bowie Boulevard, Fort Worth, Texas 76107, USA
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48
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Wunsch C, Mundt K, Li SM. Targeted production of secondary metabolites by coexpression of non-ribosomal peptide synthetase and prenyltransferase genes in Aspergillus. Appl Microbiol Biotechnol 2015; 99:4213-23. [DOI: 10.1007/s00253-015-6490-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2014] [Revised: 02/05/2015] [Accepted: 02/17/2015] [Indexed: 02/07/2023]
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49
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Rao JNS, Raghunathan R. A tactical 1,3-dipolar cycloaddition approach for the synthesis of carbohydrate derived polycyclic spiro heterocycles. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.02.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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50
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Azimi R, Baharfar R. DABCO-functionalized mesoporous SBA-15: an efficient and recyclable catalyst for the synthesis of spiro-pyranoxindoles as antioxidant agents. CAN J CHEM 2014. [DOI: 10.1139/cjc-2014-0309] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A series of spiro-pyranoxindole derivatives were prepared in good yields via a three-component reaction of isatins with activated methylene reagents and kojic acid using 1,4-diazabicyclo[2.2.2]octane (DABCO) immobilized on mesoporous SBA-15 as a heterogenized organocatalyst in aqueous media. The synthesized compounds were evaluated for their antioxidant activity by a 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging assay.
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Affiliation(s)
- Razieh Azimi
- Department of Organic Chemistry, Faculty of Chemistry, University of Mazandaran, P.O. Box 47415, Babolsar, Iran
| | - Robabeh Baharfar
- Department of Organic Chemistry, Faculty of Chemistry, University of Mazandaran, P.O. Box 47415, Babolsar, Iran
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