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Chowdhury MG, Das R, Vyas H, Sasane T, Mori O, Kamble S, Patel S, Shard A. A Comprehensive Account of Synthesis and Biological Activities of α‐lidene‐ Benzocycloalkanones and Benzoheterocycles. ChemistrySelect 2022. [DOI: 10.1002/slct.202201468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Moumita Ghosh Chowdhury
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research- Ahmedabad Gandhinagar Gujarat 380054 India
| | - Rudradip Das
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research- Ahmedabad Gandhinagar Gujarat 380054 India
| | - Het Vyas
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research- Ahmedabad Gandhinagar Gujarat 380054 India
| | - Tejal Sasane
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research- Ahmedabad Gandhinagar Gujarat 380054 India
| | - Omprakash Mori
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research- Ahmedabad Gandhinagar Gujarat 380054 India
| | - Sayali Kamble
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research- Ahmedabad Gandhinagar Gujarat 380054 India
| | - Sagarkumar Patel
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research- Ahmedabad Gandhinagar Gujarat 380054 India
| | - Amit Shard
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research- Ahmedabad Gandhinagar Gujarat 380054 India
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2
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Song XQ, Yu JH, Sun J, Liu KL, Zhang JS, Zhang H. Bioactive sesquiterpenoids from the flower buds of Tussilago farfara. Bioorg Chem 2021; 107:104632. [PMID: 33450544 DOI: 10.1016/j.bioorg.2021.104632] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 11/30/2020] [Accepted: 01/02/2021] [Indexed: 11/28/2022]
Abstract
Eleven new compounds including five bisabolane (1-5) and three oplopane (6-8) sesquiterpenoids, a pair of benzopyran enantiomers (9 & 10) and a benzofuran derivative (11), along with six known sesquiterpenoid co-metabolites (12-17), have been obtained from the flower buds of Tussilago farfara. Their structures were elucidated by comprehensive spectroscopic analyses and comparison with structurally related known analogues. The absolute configurations of all the compounds except 11 were unequivocally assigned by various techniques, including Mosher's method and time-dependent density functional theory (TD-DFT) based calculations of 13C NMR and electronic circular dichroism (ECD) data. The C-8 absolute configuration on the sidechain of this group of bisabolane sesquiterpenoids was assigned for the first time. Our bioassays have established that compounds 3, 4, 13 and 14 showed significant α-glucosidase inhibitory activities, while 6, 8 and 14 displayed moderate antiproliferative effects against two human tumor cell lines A549 and MDA-MB-231. Further flow cytometric analysis revealed that 14 effectively induced cell apoptosis and arrested cell cycle at the S/G2 phases in A549 cells, in a dose-dependent manner.
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Affiliation(s)
- Xiu-Qing Song
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China; School of Biological Science and Technology, University of Jinan, Jinan 250022, China
| | - Jin-Hai Yu
- School of Biological Science and Technology, University of Jinan, Jinan 250022, China
| | - Jia Sun
- School of Biological Science and Technology, University of Jinan, Jinan 250022, China
| | - Kai-Lu Liu
- School of Biological Science and Technology, University of Jinan, Jinan 250022, China
| | - Jun-Sheng Zhang
- School of Biological Science and Technology, University of Jinan, Jinan 250022, China
| | - Hua Zhang
- School of Biological Science and Technology, University of Jinan, Jinan 250022, China.
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3
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Bhowmik A, Das S, Sarkar W, Saidalavi KM, Mishra A, Roy A, Deb I. Diastereoselective Spirocyclization via Intramolecular C(
sp
3
)−H Bond Functionalization Triggered by Sequential [1,5]‐Hydride Shift/Cyclization Process: Approach to Spiro‐tetrahydroquinolines. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202001011] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Arup Bhowmik
- Organic and Medicinal Chemistry Division Indian Institute of Chemical Biology 4-Raja S. C. Mullick Road, Jadavpur Kolkata 700032 India
| | - Sumit Das
- Organic and Medicinal Chemistry Division Indian Institute of Chemical Biology 4-Raja S. C. Mullick Road, Jadavpur Kolkata 700032 India
- Academy of Scientific and Innovative Research (AcSIR). Kamla Nehru Nagar 201002 Ghaziabad India
| | - Writhabrata Sarkar
- Organic and Medicinal Chemistry Division Indian Institute of Chemical Biology 4-Raja S. C. Mullick Road, Jadavpur Kolkata 700032 India
| | - K. M. Saidalavi
- Organic and Medicinal Chemistry Division Indian Institute of Chemical Biology 4-Raja S. C. Mullick Road, Jadavpur Kolkata 700032 India
| | - Aniket Mishra
- Organic and Medicinal Chemistry Division Indian Institute of Chemical Biology 4-Raja S. C. Mullick Road, Jadavpur Kolkata 700032 India
| | - Anupama Roy
- Organic and Medicinal Chemistry Division Indian Institute of Chemical Biology 4-Raja S. C. Mullick Road, Jadavpur Kolkata 700032 India
| | - Indubhusan Deb
- Organic and Medicinal Chemistry Division Indian Institute of Chemical Biology 4-Raja S. C. Mullick Road, Jadavpur Kolkata 700032 India
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Vargas DF, Larghi EL, Kaufman TS. First total synthesis of ampullosine, a unique isoquinoline alkaloid isolated from Sepedonium ampullosporum, and of the related permethylampullosine. RSC Adv 2019; 9:33096-33106. [PMID: 35529133 PMCID: PMC9073199 DOI: 10.1039/c9ra06839b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Accepted: 10/07/2019] [Indexed: 12/02/2022] Open
Abstract
A straightforward and convenient approach toward the first total synthesis of ampullosine, a structurally unique 3-methylisoquinoline alkaloid isolated from Sepedonium ampullosporum, is reported. Access to the related O-methyl ampullosine methyl ester from a common intermediate is also disclosed. The synthetic sequence toward the natural product comprised a Kolbe-type carboxylation of 3,5-dihydroxybenzoic acid and further esterification of the diacid, followed by masking of one of the phenols through selective ester reduction and subsequent acetonide formation. Installation of the three-carbon atom required for the 3-methylpyridine ring was performed by triflation of the remaining free phenol and a Pd-catalyzed Suzuki–Miyaura reaction with potassium E-propenyltrifluoroborate. Deprotection of the acetonide, followed by partial oxidation of the benzylic alcohol to the salicylaldehyde, O-methylation of the free phenol and hydrazonation of the resulting ortho-anisaldehyde derivative gave a hydrazone-based 1-azatriene. This was further subjected to 6π-azaelectrocyclization to afford permethylampullosine (11 steps, 14% overall yield), whereas exhaustive demethylation with AlI3 generated in situ gave ampullosine (12 steps, 3.2% global yield). The first total synthesis of ampullosine, a unique isoquinoline isolated from Sepedonium ampullosporum, is reported. The related permethylampullosine was also synthesized.![]()
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Affiliation(s)
- Didier F. Vargas
- Instituto de Química Rosario (IQUIR, CONICET-UNR)
- Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- S2002LRK Rosario
- Argentina
| | - Enrique L. Larghi
- Instituto de Química Rosario (IQUIR, CONICET-UNR)
- Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- S2002LRK Rosario
- Argentina
| | - Teodoro S. Kaufman
- Instituto de Química Rosario (IQUIR, CONICET-UNR)
- Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- S2002LRK Rosario
- Argentina
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Méndez MV, Simonetti SO, Kaufman TS, Bracca ABJ. A concise Friedländer/Buchwald–Hartwig approach to the total synthesis of quindoline, a bioactive natural indoloquinoline alkaloid, and toward the unnatural 10-methylquindoline. NEW J CHEM 2019. [DOI: 10.1039/c9nj01961h] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Friedländer and Buchwald–Hartwig reactions were used to achieve an efficient total synthesis of quindoline and a new synthesis of the unnatural 10-methylquindoline. DFT calculations were employed to explain the outcome of a failed key transformation.
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Affiliation(s)
- María V. Méndez
- Instituto de Química Rosario (IQUIR, CONICET-UNR) and Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- Rosario
- Argentina
| | - Sebastian O. Simonetti
- Instituto de Química Rosario (IQUIR, CONICET-UNR) and Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- Rosario
- Argentina
| | - Teodoro S. Kaufman
- Instituto de Química Rosario (IQUIR, CONICET-UNR) and Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- Rosario
- Argentina
| | - Andrea B. J. Bracca
- Instituto de Química Rosario (IQUIR, CONICET-UNR) and Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- Rosario
- Argentina
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Arroyo Aguilar AA, Bolívar Avila SJ, Kaufman TS, Larghi EL. Total Synthesis of Waltherione F, a Nonrutaceous 3-Methoxy-4-quinolone, Isolated from Waltheria indica L. F. Org Lett 2018; 20:5058-5061. [DOI: 10.1021/acs.orglett.8b02221] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Abel A. Arroyo Aguilar
- Instituto de Química Rosario (IQUIR, CONICET-UNR) and Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, S2002LRK Rosario, Argentina
| | - Santiago J. Bolívar Avila
- Instituto de Química Rosario (IQUIR, CONICET-UNR) and Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, S2002LRK Rosario, Argentina
| | - Teodoro S. Kaufman
- Instituto de Química Rosario (IQUIR, CONICET-UNR) and Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, S2002LRK Rosario, Argentina
| | - Enrique L. Larghi
- Instituto de Química Rosario (IQUIR, CONICET-UNR) and Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, S2002LRK Rosario, Argentina
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Pergomet JL, Di Liberto MG, Derita MG, Bracca ABJ, Kaufman TS. Activity of the pterophyllins 2 and 4 against postharvest fruit pathogenic fungi. Comparison with a synthetic analog and related intermediates. Fitoterapia 2017; 125:98-105. [PMID: 29288027 DOI: 10.1016/j.fitote.2017.12.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 12/19/2017] [Accepted: 12/24/2017] [Indexed: 11/26/2022]
Abstract
The antifungal activity of pterophyllin 2, pterophyllin 4, a 5-desmethyl analog of the latter and some of their synthetic intermediates, against three postharvest phytopathogenic fungi, was evaluated. The target fungi were Rhizopus stolonifer, Botrytis cinerea and Monilinia fructicola, which affect fruits worldwide, causing important economic losses. The tests were carried out with imazalil and carbendazim as positive controls. Minimum inhibitory concentrations and minimum fungicidal concentrations were determined, and the morphology of the colonies was examined microscopically. In liquid medium, it was found that pterophyllin 4 exhibited selective fungicidal activity toward M. fructicola, whereas its congener pterophyllin 2 proved to be less potent and not selective and the 5-desmethyl analog of pterophyllin 4 displayed a different activity profile. Morphological changes were observed in the colonies exposed to pterophyllin 4. The results highlighted the importance of small structural features for the antifungal behavior and also suggested that, in Nature, the pterophyllins may act as plant defenses against pathogens.
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Affiliation(s)
- Jorgelina L Pergomet
- Instituto de Química Rosario (IQUIR, CONICET-UNR), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, S2002LRK, Rosario, Argentina
| | - Melina G Di Liberto
- Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, S2002LRK, Rosario, Argentina
| | - Marcos G Derita
- Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, S2002LRK, Rosario, Argentina; CONICET, Facultad de Ciencias Agrarias, Universidad Nacional del Litoral, Kreder 2805, S3080HOF, Esperanza, Argentina
| | - Andrea B J Bracca
- Instituto de Química Rosario (IQUIR, CONICET-UNR), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, S2002LRK, Rosario, Argentina.
| | - Teodoro S Kaufman
- Instituto de Química Rosario (IQUIR, CONICET-UNR), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, S2002LRK, Rosario, Argentina.
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8
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Pergomet JL, Bracca ABJ, Kaufman TS. Total syntheses of gerberinol I and the pterophyllins 2 and 4 using the Casnati–Skattebøl reaction under different conditions. Org Biomol Chem 2017; 15:7040-7049. [DOI: 10.1039/c7ob01471f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The total syntheses of the title compounds were achieved from a single coumarin precursor, taking advantage of the temperature-dependent divergent outcomes of the Casnati–Skattebøl reaction.
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Affiliation(s)
- Jorgelina L. Pergomet
- Instituto de Química Rosario (IQUIR
- CONICET-UNR)
- and Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- S2002LRK Rosario
| | - Andrea B. J. Bracca
- Instituto de Química Rosario (IQUIR
- CONICET-UNR)
- and Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- S2002LRK Rosario
| | - Teodoro S. Kaufman
- Instituto de Química Rosario (IQUIR
- CONICET-UNR)
- and Facultad de Ciencias Bioquímicas y Farmacéuticas
- Universidad Nacional de Rosario
- S2002LRK Rosario
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