1
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Yang X, Lu D, Guan W, Yin SF, Kambe N, Qiu R. Synthesis of (Deoxy)difluoromethylated Phosphines by Reaction of R 2P(O)H with TMSCF 3 and Their Application in Cu(I) Clusters in Sonogashira Coupling. J Org Chem 2022; 87:7720-7733. [PMID: 35620903 DOI: 10.1021/acs.joc.2c00308] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
R2PCF2H ligands and their R2P(O)CF2H precursors were synthesized from R2P(O)H with TMSCF3 by simply modulating the H2O concentration via deoxydifluoromethylation and difluoromethylation. The air sensitive R2PCF2H phosphines can be stabilized in Cu(I) clusters as ligands. Within these Cu(I) clusters, the Sonogashira cross-coupling reaction can proceed fast and efficiently using terminal alkynes and aryl iodides within 15 min at room temperature under air to give a variety of diaryl(alkyl)acetylenes in good yields (49 examples, yields of ≤99%). Six of the internal alkynes present in drug precursors can be obtained using this protocol in good yields. The mechanism is proposed on the basis of control experiments.
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Affiliation(s)
- Xiaogang Yang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Dong Lu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Wenjian Guan
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Shuang-Feng Yin
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
| | - Nobuaki Kambe
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki-shi, Osaka 567-0047, Japan
| | - Renhua Qiu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China
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2
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Chowdhury D, Koner M, Ghosh S, Baidya M. Regioselective Annulation of Allenylphosphine Oxides with Aromatic Amides under Ruthenium(II) Catalysis. Org Lett 2022; 24:3604-3608. [PMID: 35576459 DOI: 10.1021/acs.orglett.2c01125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Engaging allenes in transition-metal-catalyzed C-H bond activation strategy is immensely promising to access high-value scaffolds. However, such a reaction manifold remains largely elusive using cheap and sustainable ruthenium catalysis. We disclose an unprecedented ruthenium-catalyzed (4 + 2) annulation between aromatic amides and allenylphosphine oxides, furnishing NH-free isoquinolinones in high yields. This operationally simple methodology leverages weak coordination assistance, displays high selectivity, and is amenable to the late-stage functionalization of several biologically relevant motifs.
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Affiliation(s)
- Deepan Chowdhury
- Department of Chemistry, Indian Institute of Technology, Madras, Chennai 600036, India
| | - Mainak Koner
- Department of Chemistry, Indian Institute of Technology, Madras, Chennai 600036, India
| | - Suman Ghosh
- Department of Chemistry, Indian Institute of Technology, Madras, Chennai 600036, India
| | - Mahiuddin Baidya
- Department of Chemistry, Indian Institute of Technology, Madras, Chennai 600036, India
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3
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Kingston DGI, Cassera MB. Antimalarial Natural Products. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2022; 117:1-106. [PMID: 34977998 DOI: 10.1007/978-3-030-89873-1_1] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Natural products have made a crucial and unique contribution to human health, and this is especially true in the case of malaria, where the natural products quinine and artemisinin and their derivatives and analogues, have saved millions of lives. The need for new drugs to treat malaria is still urgent, since the most dangerous malaria parasite, Plasmodium falciparum, has become resistant to quinine and most of its derivatives and is becoming resistant to artemisinin and its derivatives. This volume begins with a short history of malaria and follows this with a summary of its biology. It then traces the fascinating history of the discovery of quinine for malaria treatment and then describes quinine's biosynthesis, its mechanism of action, and its clinical use, concluding with a discussion of synthetic antimalarial agents based on quinine's structure. The volume then covers the discovery of artemisinin and its development as the source of the most effective current antimalarial drug, including summaries of its synthesis and biosynthesis, its mechanism of action, and its clinical use and resistance. A short discussion of other clinically used antimalarial natural products leads to a detailed treatment of other natural products with significant antiplasmodial activity, classified by compound type. Although the search for new antimalarial natural products from Nature's combinatorial library is challenging, it is very likely to yield new antimalarial drugs. The chapter thus ends by identifying over ten natural products with development potential as clinical antimalarial agents.
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Affiliation(s)
- David G I Kingston
- Department of Chemistry and the Virginia Tech Center for Drug Discovery, Virginia Tech, Blacksburg, VA, 24061, USA.
| | - Maria Belen Cassera
- Department of Biochemistry and Molecular Biology, and Center for Tropical and Emerging Global Diseases (CTEGD), University of Georgia, Athens, GA, 30602, USA
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4
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Wang H, Cao F, Gao W, Wang X, Yang Y, Shi T, Wang Z. Pd(II)-Catalyzed Annulation Reactions of Epoxides with Benzamides to Synthesize Isoquinolones. Org Lett 2021; 23:863-868. [PMID: 33464099 DOI: 10.1021/acs.orglett.0c04097] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Epoxides as alkylating reagents are unprecedentedly applied in Pd(II)-catalyzed C-H alkylation and oxidative annulation of substituted benzamides to synthesize isoquinolones rather than isochromans, which is accomplished through alerting the previously reported reaction mechanism by the addition of oxidant and TEA. Under these conditions, various isoquinolones have been prepared with yields up to 92%. In addition, this methodology has been successfully employed in the total syntheses of rupreschstyril, siamine, and cassiarin A in an expedient fashion.
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Affiliation(s)
- Huihong Wang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, No. 222 South Tianshui Road, Lanzhou 730000, China
| | - Fei Cao
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, No. 222 South Tianshui Road, Lanzhou 730000, China
| | - Weiwei Gao
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, No. 222 South Tianshui Road, Lanzhou 730000, China
| | - Xiaodong Wang
- School of Pharmacy, Lanzhou University, No. 199 West Donggang Road, Lanzhou 730000, China
| | - Yuhang Yang
- School of Pharmacy, Lanzhou University, No. 199 West Donggang Road, Lanzhou 730000, China
| | - Tao Shi
- School of Pharmacy, Lanzhou University, No. 199 West Donggang Road, Lanzhou 730000, China
| | - Zhen Wang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, No. 222 South Tianshui Road, Lanzhou 730000, China.,School of Pharmacy, Lanzhou University, No. 199 West Donggang Road, Lanzhou 730000, China
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5
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Zhou M, Liu C, Yang J, Niu D, Dong M, Yang G, Li X, Hu Q. Alatains A and B, unique hetero-dimeric polyphenols from Cassia alata and their anti-tobacco mosaic virus activity. Fitoterapia 2020; 147:104763. [PMID: 33080344 DOI: 10.1016/j.fitote.2020.104763] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 10/13/2020] [Accepted: 10/16/2020] [Indexed: 10/23/2022]
Abstract
Two structurally unique polyphenols, alatains A (1) and B (2), were isolated from the bark of Cassia alata. Their structures were elucidated on the basis of spectroscopic analysis. Compounds 1 and 2 represent a new type of hetero-dimeric polyphenols with a C-14-C-5' linkage, biogenetically formed by an unusual intermolecular oxidative phenol-coupling reaction between a chromone unit and an isocoumarin moiety. Moreover, compounds 1 and 2 showed significant anti-tobacco mosaic virus (anti-TMV) inhibition IC50 values of 18.8 and 11.4 μM, respectively. Alatains A and B also exhibited promising protective effects on TMV infection of the host plants (Nicotiana tabacum) with the inhibition rates of 54.6% and 69.7% at the concentration of 20 μM, respectively. The results provided a new structural template for potential anti-TMV agent discovery.
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Affiliation(s)
- Min Zhou
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, Yunnan Minzu University, Kunming 650031, PR China
| | - Caiyan Liu
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, Yunnan Minzu University, Kunming 650031, PR China
| | - Jiamei Yang
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, Yunnan Minzu University, Kunming 650031, PR China
| | - Deyun Niu
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, Yunnan Minzu University, Kunming 650031, PR China
| | - Miao Dong
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, Yunnan Minzu University, Kunming 650031, PR China
| | - Guangyu Yang
- Technology Center, China Tobacco Yunnan Industry Company (Ltd.), Kunming 650000, PR China
| | - Xuemei Li
- Technology Center, China Tobacco Yunnan Industry Company (Ltd.), Kunming 650000, PR China.
| | - Qiufen Hu
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, Yunnan Minzu University, Kunming 650031, PR China.
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6
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Domaradzki ME, Liu X, Ong J, Yu G, Zhang G, Simantov A, Perl E, Chen Y. Triflic acid mediated sequential cyclization of ortho-alkynylarylesters with ammonium acetate. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131437] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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7
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Ekasari W, Widiyastuti Y, Subositi D, Hamsidi R, Widyawaruyanti A, Basuki S, Setyawan D. Determination of Cassiarin A Level of Cassia siamea Leaf Obtained from Various Regions in Indonesia Using the TLC-Densitometry Method. ScientificWorldJournal 2020; 2020:7367836. [PMID: 32831808 PMCID: PMC7428929 DOI: 10.1155/2020/7367836] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 07/09/2020] [Accepted: 07/15/2020] [Indexed: 11/21/2022] Open
Abstract
Cassia siamea leaf has been proven in vitro and in vivo to have a strong antimalarial activity with Cassiarin A as its active compound. To obtain a source of C. siamea medicinal plant with high level of active antimalarial compound (Cassiarin A), a valid method for determining Cassiarin A level is needed. For this reason, this research conducts the validation of the Cassiarin A content with determination method using thin-layer chromatography (TLC) densitometry which includes the determination of selectivity (Rs), linearity (r), accuracy, precision, limit of detection (LOD), and limit of quantification (LOQ). Cassiarin A was chromatographed on silica gel 60 F254 TLC plate using chloroform : ethanol (85 : 15 v/v) as a mobile phase. Cassiarin A was quantified by densitometric analysis at 368 nm. The linear regression analysis data for the calibration plots showed good linear relationship with r = 0.9995. The method was validated for precision, recovery, repeatability. The minimum detectable amount was found to be 0.0027 μg/spot, whereas the limit of quantitation was found to be 0.008 μg/spot. The results of this validation are then used to determine the Cassiarin A level of C. siamea leaf from various regions in Indonesia. Based on the results of the study, it can be concluded that the TLC-densitometry method can be used to determine level of the Cassiarin A compound with the advantages of being fast, easy, accurate, and inexpensive. In addition, it showed that C. siamea leaves from Pacitan have the highest level of Cassiarin A compared to other areas studied.
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Affiliation(s)
- Wiwied Ekasari
- Department of Pharmacognosy and Phytochemistry, Faculty of Pharmacy, Universitas Airlangga, Surabaya 60115, Indonesia
| | - Yuli Widiyastuti
- Medicinal Plant and Traditional Medicine Research and Development Center, National Institute Health Research and Development, Ministry of Health, Karanganyar 57792, Indonesia
| | - Dyah Subositi
- Medicinal Plant and Traditional Medicine Research and Development Center, National Institute Health Research and Development, Ministry of Health, Karanganyar 57792, Indonesia
| | - Rini Hamsidi
- Department of Health, Faculty of Vocational Studies, Universitas Airlangga, Surabaya 60115, Indonesia
| | - Aty Widyawaruyanti
- Department of Pharmacognosy and Phytochemistry, Faculty of Pharmacy, Universitas Airlangga, Surabaya 60115, Indonesia
| | - Sukmawati Basuki
- Department of Medical Parasitology, Faculty of Medicine, Universitas Airlangga, Surabaya 60131, Indonesia
| | - Dwi Setyawan
- Department of Pharmaceutics, Faculty of Pharmacy, Universitas Airlangga, Surabaya 60115, Indonesia
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8
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Wen S, Chen Y, Zhao Z, Ba D, Lv W, Cheng G. Ruthenium(II)-Catalyzed Construction of Isocoumarins via Dual C–H/C–C Activation of Sulfoxonium Ylides. J Org Chem 2019; 85:1216-1223. [DOI: 10.1021/acs.joc.9b02520] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Si Wen
- College of Materials Science & Engineering, Huaqiao University, Xiamen 361021, China
| | - Yanhui Chen
- College of Materials Science & Engineering, Huaqiao University, Xiamen 361021, China
| | - Zemin Zhao
- College of Materials Science & Engineering, Huaqiao University, Xiamen 361021, China
| | - Dan Ba
- College of Materials Science & Engineering, Huaqiao University, Xiamen 361021, China
| | - Weiwei Lv
- College of Materials Science & Engineering, Huaqiao University, Xiamen 361021, China
| | - Guolin Cheng
- College of Materials Science & Engineering, Huaqiao University, Xiamen 361021, China
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9
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Casnati A, Maggi R, Maestri G, Della Ca’ N, Motti E. Pd-Catalyzed/Iodide-Promoted α-Arylation of Ketones for the Regioselective Synthesis of Isocoumarins. J Org Chem 2017; 82:8296-8303. [DOI: 10.1021/acs.joc.7b01355] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Alessandra Casnati
- Dipartimento di
Scienze Chimiche,
della Vita e della Sostenibilità Ambientale (SCVSA), Università di Parma, Parco Area delle Scienze, 17/A, 43124 Parma, Italy
| | - Raimondo Maggi
- Dipartimento di
Scienze Chimiche,
della Vita e della Sostenibilità Ambientale (SCVSA), Università di Parma, Parco Area delle Scienze, 17/A, 43124 Parma, Italy
| | - Giovanni Maestri
- Dipartimento di
Scienze Chimiche,
della Vita e della Sostenibilità Ambientale (SCVSA), Università di Parma, Parco Area delle Scienze, 17/A, 43124 Parma, Italy
| | - Nicola Della Ca’
- Dipartimento di
Scienze Chimiche,
della Vita e della Sostenibilità Ambientale (SCVSA), Università di Parma, Parco Area delle Scienze, 17/A, 43124 Parma, Italy
| | - Elena Motti
- Dipartimento di
Scienze Chimiche,
della Vita e della Sostenibilità Ambientale (SCVSA), Università di Parma, Parco Area delle Scienze, 17/A, 43124 Parma, Italy
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10
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Zheng L, Bin Y, Wang Y, Hua R. Synthesis of Natural Product-like Polyheterocycles via One-Pot Cascade Oximation, C-H Activation, and Alkyne Annulation. J Org Chem 2016; 81:8911-8919. [PMID: 27626812 DOI: 10.1021/acs.joc.6b01460] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
An efficient protocol for the direct transformation of chroman-4-ones to tricyclic fused pyridines with the skeleton of cassiarins, a family of alkaloids with antimalarial activity, was developed. Also, a general strategy for modular construction of polyheterocycles with diverse natural product-like skeletons was developed by using ketone-alkyne bifunctional substrates. These reactions involved a one-pot cascade oximation of ketones, rhodium-catalyzed C-H activation, and intermolecular/intramolecular alkyne annulations under mild conditions with high atom, step, and redox economy.
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Affiliation(s)
- Liyao Zheng
- Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University , Beijing 100084, China
| | - Yunhui Bin
- Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University , Beijing 100084, China
| | - Yunpeng Wang
- Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University , Beijing 100084, China
| | - Ruimao Hua
- Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University , Beijing 100084, China
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11
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Gutiérrez S, Coppola A, Sucunza D, Burgos C, Vaquero JJ. Synthesis of 1-Substituted Isoquinolines by Heterocyclization of TosMIC Derivatives: Total Synthesis of Cassiarin A. Org Lett 2016; 18:3378-81. [DOI: 10.1021/acs.orglett.6b01521] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Sara Gutiérrez
- Departamento de Química
Orgánica y Química Inorgánica, Universidad de Alcalá, Alcalá de Henares 28871, Spain
| | - Anna Coppola
- Departamento de Química
Orgánica y Química Inorgánica, Universidad de Alcalá, Alcalá de Henares 28871, Spain
| | - David Sucunza
- Departamento de Química
Orgánica y Química Inorgánica, Universidad de Alcalá, Alcalá de Henares 28871, Spain
| | - Carolina Burgos
- Departamento de Química
Orgánica y Química Inorgánica, Universidad de Alcalá, Alcalá de Henares 28871, Spain
| | - Juan J. Vaquero
- Departamento de Química
Orgánica y Química Inorgánica, Universidad de Alcalá, Alcalá de Henares 28871, Spain
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12
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Zhou M, Zhou K, Gao XM, Jiang ZY, Lv JJ, Liu ZH, Yang GY, Miao MM, Che CT, Hu QF. Fistulains A and B, New Bischromones from the Bark of Cassia fistula, and Their Activities. Org Lett 2015; 17:2638-41. [PMID: 25965347 DOI: 10.1021/acs.orglett.5b01007] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Fistulains A and B (1 and 2), two novel bischromones with unique coupling patterns, alone with their biosynthetic related compound 3, were isolated from the bark of Cassia fistula. Fistulain A represents a new type of dimeric chromone alkaloid biogenetically derived from a chromone and a tricyclic alkaloid through an unusual C-14-N linkage. Fistulain B has a new carbon skeleton with a C-14-C-5' linkage formed between two different chromone units. Fistulain A displayed anti-TMV activity, and both 1 and 2 showed weak cytotoxicities.
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Affiliation(s)
- Min Zhou
- †Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, Yunnan Minzu University, Kunming 650031, Yunnan, People's Republic of China.,‡Key Laboratory of Tobacco Chemistry of Yunnan Province, China Tobacco Yunnan Industrial Co., Ltd, Kunming 650231, Yunnan, People's Republic of China
| | - Kun Zhou
- †Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, Yunnan Minzu University, Kunming 650031, Yunnan, People's Republic of China
| | - Xue-Mei Gao
- †Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, Yunnan Minzu University, Kunming 650031, Yunnan, People's Republic of China
| | - Zhi-Yong Jiang
- †Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, Yunnan Minzu University, Kunming 650031, Yunnan, People's Republic of China
| | - Jun-Jiang Lv
- ∥Chemistry and Chemical Engineering College, Chongqing University, Chongqing 400030, People's Republic of China
| | - Zhi-Hua Liu
- ‡Key Laboratory of Tobacco Chemistry of Yunnan Province, China Tobacco Yunnan Industrial Co., Ltd, Kunming 650231, Yunnan, People's Republic of China
| | - Guang-Yu Yang
- ‡Key Laboratory of Tobacco Chemistry of Yunnan Province, China Tobacco Yunnan Industrial Co., Ltd, Kunming 650231, Yunnan, People's Republic of China
| | - Ming-Ming Miao
- ‡Key Laboratory of Tobacco Chemistry of Yunnan Province, China Tobacco Yunnan Industrial Co., Ltd, Kunming 650231, Yunnan, People's Republic of China
| | - Chun-Tao Che
- §Department of Medicinal Chemistry and Pharmacognosy and WHO Collaborating Center for Traditional Medicine, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612, United States
| | - Qiu-Fen Hu
- †Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission and Ministry of Education, Yunnan Minzu University, Kunming 650031, Yunnan, People's Republic of China.,§Department of Medicinal Chemistry and Pharmacognosy and WHO Collaborating Center for Traditional Medicine, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612, United States
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13
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Maghsoodlou MT, Heydari R, Hazeri N, Habibi-khorassani SM, Barahuie F, Navidno J, Rostamizadeh M, Sajadikhah SS. An efficient one-pot synthesis of C-alkylated phenols and benzofuran derivatives with phosphanylidene substituents. RESEARCH ON CHEMICAL INTERMEDIATES 2015. [DOI: 10.1007/s11164-013-1373-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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14
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Lee JS, Shin J, Shin HJ, Lee HS, Lee YJ, Lee HS, Won H. Total Synthesis and Configurational Validation of (+)-Violapyrone C. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402524] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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15
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Deguchi J, Sasaki T, Hirasawa Y, Kaneda T, Kusumawati I, Shirota O, Morita H. Two novel tetracycles, cassibiphenols A and B from the flowers of Cassia siamea. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.01.023] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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16
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Abstract
This review will focus on selected applications of Sonogashira coupling and subsequent transformations as key steps in the total synthesis of natural products.
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Affiliation(s)
- Dan Wang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- Department of Chemistry
- East China Normal University
- Shanghai 200062, China
| | - Shuanhu Gao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- Department of Chemistry
- East China Normal University
- Shanghai 200062, China
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17
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Hibino S, Choshi T, Tsuchiya Y, Nishiyama T, Hatae N, Nemoto H, Tazaki Y. The First Total Synthesis of the Antiplasmodial Alkaloid (±)-Cassiarin C Based on a Microwave-Assisted Thermal Azaelectrocyclic Reaction. HETEROCYCLES 2014. [DOI: 10.3987/com-13-12906] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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18
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Honda T. Investigation of innovative synthesis of biologically active compounds on the basis of newly developed reactions. Chem Pharm Bull (Tokyo) 2012; 60:687-705. [PMID: 22689419 DOI: 10.1248/cpb.60.687] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Synthesis of biologically active compounds, including natural products and pharmaceutical agents, is an important and interesting research area since the large structural diversity and complexity of bioactive compounds make them an important source of leads and scaffolds in drug discovery and development. Many structurally and also biologically interesting compounds, including marine natural products, have been isolated from nature and have also been prepared on the basis of a computational design for the purpose of developing medicinal chemistry. In order to obtain a wide variety of derivatives of biologically active compounds from the viewpoint of medicinal chemistry, it is essential to establish efficient synthetic procedures for desired targets. Newly developed reactions should also be used for efficient synthesis of desired compounds. Thus, recent progress in the synthesis of biologically active compounds by focusing on the development of new reactions is summarized in this review article.
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Affiliation(s)
- Toshio Honda
- Faculty of Pharmaceutical Sciences, Hoshi University, Shinagawa-ku, Tokyo, Japan.
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19
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Krishnakumar V, Kumar KM, Mandal BK, Khan FRN. Zinc oxide nanoparticles catalyzed condensation reaction of isocoumarins and 1,7-heptadiamine in the formation of bis-isoquinolinones. ScientificWorldJournal 2012; 2012:619080. [PMID: 22536149 PMCID: PMC3317590 DOI: 10.1100/2012/619080] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2011] [Accepted: 11/30/2011] [Indexed: 11/21/2022] Open
Abstract
The diversified bis-isoquinolinones were obtained in two steps, utilizing homophthalic acid and various acid chlorides providing 3-substituted isocoumarins in the first step which on further condensation with 1,7-heptadiamine involving C–N bond formation from the lactone in the presence of 10 mol% zinc oxide nanoparticles (ZnO NPs) (<150 nm) afforded the desired bis-isoquinolinones in high yield and purity. The synthesized compounds were then characterized using FTIR, 1H NMR, 13C NMR, and HRMS techniques.
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Affiliation(s)
- Varadhan Krishnakumar
- Organic Chemistry Division, School of Advanced Sciences, VIT University, Tamil Nadu, Vellore 632 014, India
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Deguchi J, Hirahara T, Hirasawa Y, Ekasari W, Widyawaruyanti A, Shirota O, Shiro M, Morita H. New Tricyclic Alkaloids, Cassiarins G, H, J, and K from Leaves of Cassia siamea. Chem Pharm Bull (Tokyo) 2012; 60:219-22. [DOI: 10.1248/cpb.60.219] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Jun Deguchi
- Faculty of Pharmaceutical Sciences, Hoshi University
| | | | | | | | | | - Osamu Shirota
- Faculty of Pharmaceutical Sciences at Kagawa Campus, Tokushima Bunri University
| | - Motoo Shiro
- X-Ray Research Laboratory, Rigaku Corporation
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Deguchi J, Hirahara T, Oshimi S, Hirasawa Y, Ekasari W, Shirota O, Honda T, Morita H. Total Synthesis of A Novel Tetracyclic Alkaloid, Cassiarin F from the Flowers of Cassia siamea. Org Lett 2011; 13:4344-7. [DOI: 10.1021/ol201674a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jun Deguchi
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-ku, Tokyo 142-8501, Japan, Faculty of Pharmacy, Airlangga University, Jalan Dharmawangsa Dalam, Surabaya 60286, Indonesia, and Faculty of Pharmaceutical Sciences at Kagawa Campus, Tokushima Bunri University, 1314-1 Shido, Sanuki City, Kagawa 769-2193, Japan
| | - Tomoe Hirahara
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-ku, Tokyo 142-8501, Japan, Faculty of Pharmacy, Airlangga University, Jalan Dharmawangsa Dalam, Surabaya 60286, Indonesia, and Faculty of Pharmaceutical Sciences at Kagawa Campus, Tokushima Bunri University, 1314-1 Shido, Sanuki City, Kagawa 769-2193, Japan
| | - Shiori Oshimi
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-ku, Tokyo 142-8501, Japan, Faculty of Pharmacy, Airlangga University, Jalan Dharmawangsa Dalam, Surabaya 60286, Indonesia, and Faculty of Pharmaceutical Sciences at Kagawa Campus, Tokushima Bunri University, 1314-1 Shido, Sanuki City, Kagawa 769-2193, Japan
| | - Yusuke Hirasawa
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-ku, Tokyo 142-8501, Japan, Faculty of Pharmacy, Airlangga University, Jalan Dharmawangsa Dalam, Surabaya 60286, Indonesia, and Faculty of Pharmaceutical Sciences at Kagawa Campus, Tokushima Bunri University, 1314-1 Shido, Sanuki City, Kagawa 769-2193, Japan
| | - Wiwied Ekasari
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-ku, Tokyo 142-8501, Japan, Faculty of Pharmacy, Airlangga University, Jalan Dharmawangsa Dalam, Surabaya 60286, Indonesia, and Faculty of Pharmaceutical Sciences at Kagawa Campus, Tokushima Bunri University, 1314-1 Shido, Sanuki City, Kagawa 769-2193, Japan
| | - Osamu Shirota
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-ku, Tokyo 142-8501, Japan, Faculty of Pharmacy, Airlangga University, Jalan Dharmawangsa Dalam, Surabaya 60286, Indonesia, and Faculty of Pharmaceutical Sciences at Kagawa Campus, Tokushima Bunri University, 1314-1 Shido, Sanuki City, Kagawa 769-2193, Japan
| | - Toshio Honda
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-ku, Tokyo 142-8501, Japan, Faculty of Pharmacy, Airlangga University, Jalan Dharmawangsa Dalam, Surabaya 60286, Indonesia, and Faculty of Pharmaceutical Sciences at Kagawa Campus, Tokushima Bunri University, 1314-1 Shido, Sanuki City, Kagawa 769-2193, Japan
| | - Hiroshi Morita
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa-ku, Tokyo 142-8501, Japan, Faculty of Pharmacy, Airlangga University, Jalan Dharmawangsa Dalam, Surabaya 60286, Indonesia, and Faculty of Pharmaceutical Sciences at Kagawa Campus, Tokushima Bunri University, 1314-1 Shido, Sanuki City, Kagawa 769-2193, Japan
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Affiliation(s)
- Rafael Chinchilla
- Departamento de Química Orgánica, Facultad de Ciencias and Instituto de Síntesis Orgánica (ISO), Universidad de Alicante, Apartado 99, 03080 Alicante, Spain.
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Matsumoto T, Kobayashi T, Ishida K, Hirasawa Y, Morita H, Honda T, Kamata K. Vasodilator effect of Cassiarin A, a novel antiplasmodial alkaloid from Cassia siamea, in rat isolated mesenteric artery. Biol Pharm Bull 2010; 33:844-8. [PMID: 20460764 DOI: 10.1248/bpb.33.844] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The aim of this study was to investigate the vasorelaxant effect induced by cassiarin A, a novel antiplasmodial alkaloid from Cassia siamea, in rings cut from rat superior mesenteric arteries. In rings precontracted with phenylephrine, cassiarin A induced a concentration-dependent relaxation. This relaxation was attenuated: 1) after removal of the endothelium or after pretreatment of rings with 100 microM of N(G)-nitro-L-arginine (nitric oxide synthase inhibitor) or 10 microM of 1H-[1,2,4]oxadiazolo[4,3-a]-quinoxalin-1-one (guanylyl cyclase inhibitor), but not after pretreatment with 10 microM of indomethacin (cyclooxygenase inhibitor); and 2) after pretreatment of preparations with either a nonselective or selective inhibitor of large-conductance Ca(2+)-activated K(+) (BK(Ca)) channels [1 mM of tetraethylammonium or 100 nM of iberiotoxin, respectively]. The cassiarin A-induced relaxation was also attenuated by these BK(Ca) inhibitors in endothelium-denuded preparations. The cassiarin A-induced relaxation was not altered by treatment with the ATP-sensitive K(+)-channel inhibitor glibenclamide (10 microM) or with the voltage-dependent K(+)-channel inhibitor 4-aminopyridine (1 mM). In isolated mesenteric artery rings, cassiarin A tended to increase nitric oxide (NO) levels. These results suggest that in the rat mesenteric artery, cassiarin A-induced relaxation may be mediated by endothelial NO and may occur partly via BK(Ca)-channel activation.
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Affiliation(s)
- Takayuki Matsumoto
- Department of Physiology and Morphology, Institute of Medicinal Chemistry, Hoshi University, Shinagawa-ku, Tokyo 142-8501, Japan
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Kanputhorn S, Petsom A, Thamyongkit P. Transformation of barakol into cassiarins A, B, and their derivatives. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.07.053] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Morita H, Tomizawa Y, Deguchi J, Ishikawa T, Arai H, Zaima K, Hosoya T, Hirasawa Y, Matsumoto T, Kamata K. Synthesis and structure–activity relationships of cassiarin A as potential antimalarials with vasorelaxant activity. Bioorg Med Chem 2009; 17:8234-40. [DOI: 10.1016/j.bmc.2009.10.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2009] [Revised: 10/06/2009] [Accepted: 10/07/2009] [Indexed: 10/20/2022]
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Berliner MA, Cordi EM, Dunetz JR, Price KE. Sonogashira Reactions with Propyne: Facile Synthesis of 4-Hydroxy-2-methylbenzofurans from Iodoresorcinols. Org Process Res Dev 2009. [DOI: 10.1021/op900263b] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Martin A. Berliner
- Research-API and Technology-API, Pharmaceutical Sciences, Pfizer Global Research and Development, 558 Eastern Point Road, Groton, Connecticut 06340
| | - Eric M. Cordi
- Research-API and Technology-API, Pharmaceutical Sciences, Pfizer Global Research and Development, 558 Eastern Point Road, Groton, Connecticut 06340
| | - Joshua R. Dunetz
- Research-API and Technology-API, Pharmaceutical Sciences, Pfizer Global Research and Development, 558 Eastern Point Road, Groton, Connecticut 06340
| | - Kristin E. Price
- Research-API and Technology-API, Pharmaceutical Sciences, Pfizer Global Research and Development, 558 Eastern Point Road, Groton, Connecticut 06340
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Oshimi S, Deguchi J, Hirasawa Y, Ekasari W, Widyawaruyanti A, Wahyuni TS, Zaini NC, Shirota O, Morita H. Cassiarins C-E, antiplasmodial alkaloids from the flowers of Cassia siamea. JOURNAL OF NATURAL PRODUCTS 2009; 72:1899-1901. [PMID: 19754128 DOI: 10.1021/np9004213] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Three new alkaloids, cassiarins C-E (1-3), and a new chromone, 10,11-dihydroanhydrobarakol (4), which showed moderate antiplasmodial activity against Plasmodium falciparum 3D7, were isolated from flowers of Cassia siamea, and the structures of 1-4 were elucidated by 2D NMR analysis and chemical transformation. Cassiarin D (2) was a dimeric compound consisting of 5-acetonyl-7-hydroxy-2-methylchromone and cassiarin C (1), and cassiarin E (3) was a dimer of cassiarins A and C (1).
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Affiliation(s)
- Shiori Oshimi
- Faculty of Pharmaceutical Sciences, Hoshi University, Ebara 2-4-41 Shinagawa, Tokyo 142-8501, Japan
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‘Green’ chitosan bound silver nanoparticles for selective C–C bond formation via in situ iodination of phenols. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.molcata.2009.02.006] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Honda T, Rudyanto M, Kobayashi K. Synthetic Studies on Natural Isocoumarins and Isocarbostyril Derivatives Having an Alkyl Substituent at the 3-Position: Total Synthesis of Scoparines A and B, and Ruprechstyril. HETEROCYCLES 2009. [DOI: 10.3987/com-08-s(d)40] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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30
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Oshimi S, Tomizawa Y, Hirasawa Y, Honda T, Ekasari W, Widyawaruyanti A, Rudyanto M, Indrayanto G, Zaini NC, Morita H. Chrobisiamone A, a new bischromone from Cassia siamea and a biomimetic transformation of 5-acetonyl-7-hydroxy-2-methylchromone into cassiarin A. Bioorg Med Chem Lett 2008; 18:3761-3. [DOI: 10.1016/j.bmcl.2008.05.041] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2008] [Revised: 05/08/2008] [Accepted: 05/09/2008] [Indexed: 11/27/2022]
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Affiliation(s)
- Yuan-Shan Yao
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai 200032, China, and Joint Laboratory of Green Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Zhu-Jun Yao
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai 200032, China, and Joint Laboratory of Green Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
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