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Lei YE, Wang Q, Yaermaimaiti S, Ma ZH, Li MM, Lu Y, Chen DF, Wang Q. Fulvanines J-K, two rare lactam pyrrole alkaloids from Hemerocallis fulva. Chem Biodivers 2024; 21:e202301672. [PMID: 38116924 DOI: 10.1002/cbdv.202301672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 12/17/2023] [Accepted: 12/18/2023] [Indexed: 12/21/2023]
Abstract
Two rare jatropham lactam derivatives, named as fulvanines J-K (1-2), together with six known pyrrole alkaloids, 5,5'-oxydi(3-methyl-3-pyrrolin-2-one) (3), (-)-5-hydroxy-3-methyl-3-pyrrolin-2-one (jatropham) (4), (±)-5-O-methyljatropham (5), perlolyrine (6), butyl-2-formyl-5-(hydroxymethyl)-1H-pyrrole-1-butanoate (7), and hemerocallisamine II (8), were isolated from the flower of Hemerocallis fulva. Their structures were elucidated on the basis of spectroscopic methods and compared with the NMR spectra data in the literature. All compounds were evaluated for their anti-complementary activity in vitro, and compounds 1, 4, and 6 exhibited anti-complement effect with CH50 values from 0.61 to 1.42 mM.
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Affiliation(s)
- Ya-E Lei
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, School of Pharmacy, Shihezi University, Shihezi, 832002, P. R. China
| | - Qian Wang
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, School of Pharmacy, Shihezi University, Shihezi, 832002, P. R. China
| | - Saimijiang Yaermaimaiti
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, School of Pharmacy, Shihezi University, Shihezi, 832002, P. R. China
| | - Zi-Hui Ma
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, School of Pharmacy, Shihezi University, Shihezi, 832002, P. R. China
| | - Miao-Miao Li
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, School of Pharmacy, Shihezi University, Shihezi, 832002, P. R. China
| | - Yan Lu
- Department of Pharmacognosy, School of Pharmacy, Fudan University, Shanghai, 201203, P. R. China
| | - Dao-Feng Chen
- Department of Pharmacognosy, School of Pharmacy, Fudan University, Shanghai, 201203, P. R. China
| | - Qi Wang
- Key Laboratory of Xinjiang Phytomedicine Resource and Utilization, Ministry of Education, School of Pharmacy, Shihezi University, Shihezi, 832002, P. R. China
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2
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Pyrrole-2-carboxaldehydes: Origins and Physiological Activities. Molecules 2023; 28:molecules28062599. [PMID: 36985566 PMCID: PMC10058459 DOI: 10.3390/molecules28062599] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/06/2023] [Accepted: 03/09/2023] [Indexed: 03/18/2023] Open
Abstract
Pyrrole-2-carboxaldehyde (Py-2-C) derivatives have been isolated from many natural sources, including fungi, plants (roots, leaves, and seeds), and microorganisms. The well-known diabetes molecular marker, pyrraline, which is produced after sequential reactions in vivo, has a Py-2-C skeleton. Py-2-Cs can be chemically produced by the strong acid-catalyzed condensation of glucose and amino acid derivatives in vitro. These observations indicate the importance of the Py-2-C skeleton in vivo and suggest that molecules containing this skeleton have various biological functions. In this review, we have summarized Py-2-C derivatives based on their origins. We also discuss the structural characteristics, natural sources, and physiological activities of isolated compounds containing the Py-2-C group.
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Pinčeková L, Jančiová E, Berkeš D, Gyepes R, Kolarovič A, Caletková O. Total Synthesis of Hemerocallisamine I Paved by Gram-Scale Synthesis of (2 S,4 S)-4-Hydroxyglutamic Acid Lactone. Molecules 2023; 28:molecules28052177. [PMID: 36903423 PMCID: PMC10037412 DOI: 10.3390/molecules28052177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 02/24/2023] [Accepted: 02/24/2023] [Indexed: 03/02/2023] Open
Abstract
Total synthesis of the 2-formylpyrrole alkaloid hemerocallisamine I is presented, both in racemic and enantiopure form. Our synthetic strategy involves (2S,4S)-4-hydroxyglutamic acid lactone as the key intermediate. Starting from an achiral substrate, the target stereogenic centers were introduced by means of crystallization-induced diastereomer transformation (CIDT) in a highly stereoselective fashion. A Maillard-type condensation was crucial to constructing the desired pyrrolic scaffold.
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Affiliation(s)
- Lucia Pinčeková
- Institute of Organic Chemistry, Catalysis and Petrochemistry, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia
| | - Eva Jančiová
- Institute of Organic Chemistry, Catalysis and Petrochemistry, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia
| | - Dušan Berkeš
- Institute of Organic Chemistry, Catalysis and Petrochemistry, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia
| | - Róbert Gyepes
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague, Czech Republic
| | - Andrej Kolarovič
- Department of Chemistry, Faculty of Education, Trnava University, Priemyselná 4, 918 43 Trnava, Slovakia
| | - Oľga Caletková
- Institute of Organic Chemistry, Catalysis and Petrochemistry, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia
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Ogawa K, Sakamoto D, Hosoki R. Computer Science Technology in Natural Products Research: A Review of Its Applications and Implications. Chem Pharm Bull (Tokyo) 2023; 71:486-494. [PMID: 37394596 DOI: 10.1248/cpb.c23-00039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2023]
Abstract
Computational approaches to drug development are rapidly growing in popularity and have been used to produce significant results. Recent developments in information science have expanded databases and chemical informatics knowledge relating to natural products. Natural products have long been well-studied, and a large number of unique structures and remarkable active substances have been reported. Analyzing accumulated natural product knowledge using emerging computational science techniques is expected to yield more new discoveries. In this article, we discuss the current state of natural product research using machine learning. The basic concepts and frameworks of machine learning are summarized. Natural product research that utilizes machine learning is described in terms of the exploration of active compounds, automatic compound design, and application to spectral data. In addition, efforts to develop drugs for intractable diseases will be addressed. Lastly, we discuss key considerations for applying machine learning in this field. This paper aims to promote progress in natural product research by presenting the current state of computational science and chemoinformatics approaches in terms of its applications, strengths, limitations, and implications for the field.
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Affiliation(s)
- Keiko Ogawa
- Laboratory of Regulatory Science, College of Pharmaceutical Sciences, Ritsumeikan University
| | - Daiki Sakamoto
- Laboratory of Regulatory Science, College of Pharmaceutical Sciences, Ritsumeikan University
| | - Rumiko Hosoki
- Laboratory of Regulatory Science, College of Pharmaceutical Sciences, Ritsumeikan University
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Maki BE, Lily Feng X, Mosiychuk MR, Davis NB. Synthesis of advanced Maillard products: 2-formylpyrrole alkaloids. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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A Combined Network Pharmacology and Molecular Docking Approach to Investigate Candidate Active Components and Multitarget Mechanisms of Hemerocallis Flowers on Antidepressant Effect. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:7127129. [PMID: 34306154 PMCID: PMC8266453 DOI: 10.1155/2021/7127129] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 09/18/2020] [Accepted: 06/16/2021] [Indexed: 02/06/2023]
Abstract
Objective The purpose of our research is to systematically explore the multiple mechanisms of Hemerocallis fulva Flowers (HF) on depressive disorder (DD). Methods The components of HF were searched from the literature. The targets of components were obtained from PharmMapper. After that, Cytoscape software was used to build a component-target network. The targets of DD were collected from DisGeNET, PharmGKB, TTD, and OMIM. Protein-protein interactions (PPIs) among the DD targets were executed to screen the key targets. Afterward, the GO and KEGG pathway enrichment analysis were performed by the KOBAS database. A compound-target-KEGG pathway network was built to analyze the key compounds and targets. Finally, the potential active substances and targets were validated by molecular docking. Results A total of 55 active compounds in HF, 646 compound-related targets, and 527 DD-related targets were identified from public databases. After treated with PPI, 219 key targets of DD were acquired. The gene enrichment analysis suggested that HF probably benefits DD patients by modulating pathways related to the nervous system, endocrine system, amino acid metabolism, and signal transduction. The network analysis showed the critical components and targets of HF on DD. Results of molecular docking increased the reliability of this study. Conclusions It predicted and verified the pharmacological and molecular mechanism of HF against DD from a holistic perspective, which will also lay a foundation for further experimental research and rational clinical application of DD.
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Nakamura S, Yoneda T, Okui S, Okazaki S, Nakashima S, Matsuda H. Detection of New 3,4-Dimethylpyrrole Derivatives upon the Incubation of Exogenous Amines with Extract of Onion (Allium cepa) and Crude Alliinase from Garlic (A. sativum). HETEROCYCLES 2021. [DOI: 10.3987/com-21-14541] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Matraszek-Gawron R, Chwil M, Terlecka P, Skoczylas MM. Recent Studies on Anti-Depressant Bioactive Substances in Selected Species from the Genera Hemerocallis and Gladiolus: A Systematic Review. Pharmaceuticals (Basel) 2019; 12:ph12040172. [PMID: 31775329 PMCID: PMC6958339 DOI: 10.3390/ph12040172] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 11/04/2019] [Accepted: 11/22/2019] [Indexed: 12/14/2022] Open
Abstract
Herbal therapy is a potential alternative applied to pharmacological alleviation of depression symptoms and treatment of this disorder, which is predicted by the World Health Organization (WHO) to be the most serious health problem worldwide over the next several years. It has been well documented that many herbs with psychotropic effects have far fewer side effects than a variety of pharmaceutical agents used by psychiatrists for the treatment of depression. This systematic review presents literature data on the antidepressant activity of representatives of the genera Hemerocallis (H. fulva and H. citrina Baroni, family Xanthorrhoeaceae) and Gladiolus (G. dalenii, family Iridaceae) and on biologically active compounds and their mechanisms of action to consider the application of herbal preparations supporting the treatment of depression.
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Affiliation(s)
- Renata Matraszek-Gawron
- Department of Botany and Plant Physiology, University of Life Sciences in Lublin, 15 Akademicka Street, 20-950 Lublin, Poland;
| | - Mirosława Chwil
- Department of Botany and Plant Physiology, University of Life Sciences in Lublin, 15 Akademicka Street, 20-950 Lublin, Poland;
- Correspondence: ; Tel.: +48-81-445-66-24
| | - Paulina Terlecka
- Chair and Department of Pneumology, Oncology and Allergology, Medical University of Lublin, 8 Jaczewskiego Street, 20-090 Lublin, Poland;
| | - Michał M. Skoczylas
- Department of Diagnostic Imaging and Interventional Radiology, Pomeranian Medical University in Szczecin, 1 Unii Lubelskiej Street, 71-252 Szczecin, Poland;
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Qi B, Yang W, Ding N, Luo Y, Jia F, Liu X, Wang J, Wang X, Tu P, Shi S. Pyrrole 2-carbaldehyde derived alkaloids from the roots of Angelica dahurica. J Nat Med 2019; 73:769-776. [DOI: 10.1007/s11418-019-01328-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Accepted: 06/06/2019] [Indexed: 01/25/2023]
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Wood J, Furkert DP, Brimble MA. 2-Formylpyrrole natural products: origin, structural diversity, bioactivity and synthesis. Nat Prod Rep 2019; 36:289-306. [DOI: 10.1039/c8np00051d] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
2-Formylpyrroles constitute a large and growing family of bioactive Maillard reaction products found in food, traditional medicine and throughout nature.
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Affiliation(s)
- James M. Wood
- School of Chemical Sciences
- University of Auckland
- Auckland
- New Zealand
| | - Daniel P. Furkert
- School of Chemical Sciences
- University of Auckland
- Auckland
- New Zealand
| | - Margaret A. Brimble
- School of Chemical Sciences
- University of Auckland
- Auckland
- New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery
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12
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Matsumoto T, Nakamura S, Kojima N, Hasei T, Yamashita M, Watanabe T, Matsuda H. Antimutagenic activity of ent-kaurane diterpenoids from the aerial parts of Isodon japonicus. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.07.106] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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13
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Wood JM, Furkert DP, Brimble MA. Total Synthesis and Stereochemical Revision of the 2-Formylpyrrole Alkaloid Hemerocallisamine I. JOURNAL OF NATURAL PRODUCTS 2017; 80:1926-1929. [PMID: 28590122 DOI: 10.1021/acs.jnatprod.7b00314] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The first total synthesis of the 2-formylpyrrole alkaloid hemerocallisamine I is reported. The convergent synthesis features a key Maillard-type condensation of a complex amine derived from cis-4-hydroxy-l-proline with a dihydropyranone, to directly furnish the 2-formylpyrrole ring system. The absolute configuration of hemerocallisamine I has been revised on the basis of optical rotation data obtained for the synthesized compound.
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Affiliation(s)
- James M Wood
- School of Chemical Sciences, The University of Auckland , 23 Symonds Street, Auckland 1142, New Zealand
| | - Daniel P Furkert
- School of Chemical Sciences, The University of Auckland , 23 Symonds Street, Auckland 1142, New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland , Private Bag 92019, Auckland 1142, New Zealand
| | - Margaret A Brimble
- School of Chemical Sciences, The University of Auckland , 23 Symonds Street, Auckland 1142, New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland , Private Bag 92019, Auckland 1142, New Zealand
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Sun J, Liu W, Zhang M, Geng P, Shan Y, Li G, Zhao Y, Chen P. The analysis of phenolic compounds in daylily using UHPLC-HRMSnand evaluation of drying processing method by fingerprinting and metabolomic approaches. J FOOD PROCESS PRES 2017. [DOI: 10.1111/jfpp.13325] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Jianghao Sun
- Food Composition and Methods Development Laboratory; Beltsville Human Nutrition Research Center, Agricultural Research Service, USDA; Building-161, BARC-East, 10300 Baltimore Avenue, Beltsville 20705 Maryland
| | - Wei Liu
- Hunan Food Test and Analysis Center, Hunan Academy of Agricultural Sciences; Mapoling, Furong District, Changsha, Hunan 410125 P. R. China
| | - Mengliang Zhang
- Food Composition and Methods Development Laboratory; Beltsville Human Nutrition Research Center, Agricultural Research Service, USDA; Building-161, BARC-East, 10300 Baltimore Avenue, Beltsville 20705 Maryland
| | - Ping Geng
- Food Composition and Methods Development Laboratory; Beltsville Human Nutrition Research Center, Agricultural Research Service, USDA; Building-161, BARC-East, 10300 Baltimore Avenue, Beltsville 20705 Maryland
| | - Yang Shan
- Hunan Food Test and Analysis Center, Hunan Academy of Agricultural Sciences; Mapoling, Furong District, Changsha, Hunan 410125 P. R. China
| | - Gaoyang Li
- Hunan Food Test and Analysis Center, Hunan Academy of Agricultural Sciences; Mapoling, Furong District, Changsha, Hunan 410125 P. R. China
| | - Yang Zhao
- Hunan Food Test and Analysis Center, Hunan Academy of Agricultural Sciences; Mapoling, Furong District, Changsha, Hunan 410125 P. R. China
| | - Pei Chen
- Food Composition and Methods Development Laboratory; Beltsville Human Nutrition Research Center, Agricultural Research Service, USDA; Building-161, BARC-East, 10300 Baltimore Avenue, Beltsville 20705 Maryland
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Matsumoto T, Nakamura S, Nakashima S, Ohta T, Ogawa K, Fukaya M, Tsukioka J, Hasei T, Watanabe T, Matsuda H. Neolignan and megastigmane glucosides from the aerial parts of Isodon japonicus with cell protective effects on BaP-induced cytotoxicity. PHYTOCHEMISTRY 2017; 137:101-108. [PMID: 28209279 DOI: 10.1016/j.phytochem.2017.02.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 01/25/2017] [Accepted: 02/06/2017] [Indexed: 06/06/2023]
Abstract
Six neolignan glucosides, named isodonosides I-VI, and a megastigmane glucoside named isodonmegastigmane I, were isolated together with 15 known compounds from the methanolic extract of aerial parts of Isodon japonicus cultivated in Tokushima, Japan. The chemical structures of the compounds were elucidated based on their MS and NMR spectroscopic analysis. The absolute configurations of the neolignan and megastigmane glucosides were determined by derivatizations, by ECD (electronic circular dicroism) Cotton effect approximation, and by the modified Mosher's method. In addition, a significant cell protective effects of neolignan glucosides on benzo[a]pyrene-induced cytotoxicity was found.
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Affiliation(s)
- Takahiro Matsumoto
- Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto, 607-8412, Japan
| | - Seikou Nakamura
- Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto, 607-8412, Japan
| | - Souichi Nakashima
- Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto, 607-8412, Japan
| | - Tomoe Ohta
- Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto, 607-8412, Japan
| | - Keiko Ogawa
- Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto, 607-8412, Japan
| | - Masashi Fukaya
- Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto, 607-8412, Japan
| | - Junko Tsukioka
- Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto, 607-8412, Japan
| | - Tomohiro Hasei
- Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto, 607-8412, Japan
| | - Tetsushi Watanabe
- Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto, 607-8412, Japan
| | - Hisashi Matsuda
- Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto, 607-8412, Japan.
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Eight new γ-lactam alkaloids from the roots of the Hemerocallis minor Mill. Fitoterapia 2017; 118:80-86. [PMID: 28285947 DOI: 10.1016/j.fitote.2017.03.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Revised: 02/21/2017] [Accepted: 03/08/2017] [Indexed: 11/23/2022]
Abstract
Eight new γ-lactam alkaloids, hemerominors A-H (1-8), including two pair of epimers (1-4), together with six known compounds (9-14) were isolated from the roots of Hemerocallis minor Mill. The structures of 1-8 were established on the basis of extensive NMR studies and HR-MS measurements as well as comparison with literature data. The absolute configurations of 1-8 were determined by CD spectral analysis and modified Mosher's method. All of compounds were evaluated for their inhibitory effects against LPS-induced NO production in RAW264.7 macrophages. Among them, compound 13 exhibited moderate inhibitory activity against NO production and with IC50 value of 18.0 μM.
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Nakamura S, Zhang Y, Nakashima S, Oda Y, Wang T, Yoshikawa M, Matsuda H. Structures of Aromatic Glycosides from the Seeds of Cassia auriculata. Chem Pharm Bull (Tokyo) 2017; 64:970-4. [PMID: 27373656 DOI: 10.1248/cpb.c16-00198] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A new benzocoumarin glycoside, cassiaglycoside I (1), a new naphthol glycoside, cassiaglycoside II (2), a new chromon glycoside, cassiaglycoside III (3), a new phenylethyl glycoside, cassiaglycoside IV (4), were isolated from the seeds of Cassia auriculata, together with seven known constituents. The chemical structures of four new constituents were characterized on the basis of chemical and physicochemical evidence.
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18
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Ohta T, Nakamura S, Nakashima S, Oda Y, Matsumoto T, Fukaya M, Yano M, Yoshikawa M, Matsuda H. Chemical structures of constituents from the whole plant of Bacopa monniera. J Nat Med 2016; 70:404-11. [PMID: 27010932 DOI: 10.1007/s11418-016-0986-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Accepted: 03/06/2016] [Indexed: 12/27/2022]
Abstract
Two new dammarane-type triterpene oligoglycosides, bacomosaponins A and B, and three new phenylethanoid glycosides, bacomosides A, B1, and B2, were isolated from the whole plant of Bacopa monniera Wettst. The chemical structures of the new constituents were characterized on the basis of chemical and physicochemical evidence. In the present study, bacomosaponins A and B with acyl groups were obtained from the whole plant of B. monniera. This is the first report of acylated dammarane-type triterpene oligoglycosides isolated from B. monniera. In addition, dammarane-type triterpene saponins significantly inhibited the aggregation of 42-mer amyloid β-protein.
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Affiliation(s)
- Tomoe Ohta
- Department of Pharmacognosy, Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto, 607-8412, Japan
| | - Seikou Nakamura
- Department of Pharmacognosy, Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto, 607-8412, Japan
| | - Souichi Nakashima
- Department of Pharmacognosy, Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto, 607-8412, Japan
- N.T.H Co., Ltd., 4F Sky-ebisu Bldg., 1-8-11 Ebisu, Shibuya-ku, Tokyo, 150-0013, Japan
| | - Yoshimi Oda
- Department of Pharmacognosy, Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto, 607-8412, Japan
- N.T.H Co., Ltd., 4F Sky-ebisu Bldg., 1-8-11 Ebisu, Shibuya-ku, Tokyo, 150-0013, Japan
| | - Takahiro Matsumoto
- Department of Pharmacognosy, Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto, 607-8412, Japan
| | - Masashi Fukaya
- Department of Pharmacognosy, Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto, 607-8412, Japan
| | - Mamiko Yano
- Department of Pharmacognosy, Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto, 607-8412, Japan
| | - Masayuki Yoshikawa
- Department of Pharmacognosy, Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto, 607-8412, Japan
| | - Hisashi Matsuda
- Department of Pharmacognosy, Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto, 607-8412, Japan.
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19
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γ-Lactam alkaloids from the flower buds of daylily. J Nat Med 2016; 70:376-83. [DOI: 10.1007/s11418-015-0963-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 12/29/2015] [Indexed: 11/30/2022]
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20
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Tahara YK, Michino M, Ito M, Kanyiva KS, Shibata T. Enantioselective sp(3) C-H alkylation of γ-butyrolactam by a chiral Ir(I) catalyst for the synthesis of 4-substituted γ-amino acids. Chem Commun (Camb) 2015; 51:16660-3. [PMID: 26426546 DOI: 10.1039/c5cc07102j] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Ir-catalyzed sp(3) C-H alkylation of γ-butyrolactam with alkenes was used for the highly enantioselective synthesis of 5-substituted γ-lactams, which were readily converted into chiral 4-substituted γ-amino acids. A broad scope of alkenes was amenable as coupling partners, and the alkylated product using acrylate could be transformed into the key intermediate of pyrrolam A synthesis.
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Affiliation(s)
- Yu-ki Tahara
- Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan.
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Zhang Y, Nakamura S, Nakashima S, Wang T, Yoshikawa M, Matsuda H. Chemical structures of constituents from the seeds of Cassia auriculata. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.07.045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Nakamura S, Xu F, Ninomiya K, Nakashima S, Oda Y, Morikawa T, Muraoka O, Yoshikawa M, Matsuda H. Chemical structures and hepatoprotective effects of constituents from Cassia auriculata leaves. Chem Pharm Bull (Tokyo) 2015; 62:1026-31. [PMID: 25273061 DOI: 10.1248/cpb.c14-00420] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
An 80% aqueous acetone extract of Cassia auriculata leaves was found to show a protective effect on D-galactosamine-induced cytotoxicity in primary cultured mouse hepatocytes. From the 80% aqueous acetone extract, we isolated a new benzocoumarin glycoside, avaraoside I (1), and a new flavanol dimer, avaraol I (2), together with 29 known constituents. The structures of the new compounds were elucidated on the basis of chemical and physicochemical evidence. In addition, three isolated compounds, pseudosemiglabrin (15, 0.0011%), (2S)-7,4'-dihydroxyflavan(4β→8)-catechin (22, 0.00075%), and (2S)-7,4'-dihydroxyflavan(4β→8)-gallocatechin (23, 0.092%), displayed hepatoprotective effects equivalent to that of the hepatoprotective agent, silybin.
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Ohta T, Nakamura S, Nakashima S, Matsumoto T, Ogawa K, Fujimoto K, Fukaya M, Yoshikawa M, Matsuda H. Acylated oleanane-type triterpene oligoglycosides from the flower buds of Camellia sinensis var. assamica. Tetrahedron 2015. [DOI: 10.1016/j.tet.2014.12.049] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Chemical structures of constituents from the flowers of Osmanthus fragrans var. aurantiacus. J Nat Med 2014; 69:135-41. [PMID: 25300343 DOI: 10.1007/s11418-014-0869-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Accepted: 08/23/2014] [Indexed: 12/19/2022]
Abstract
Three new megastigmane glycosides named floraosmanosides I-III and a new γ-decalactone named floraosmanolactone I together with 16 known constituents were isolated from the flowers of Osmanthus fragrans var. aurantiacus cultivated in Guangxi Zhuang Autonomous Region, China. The chemical structures of the new compounds were elucidated on the basis of chemical and physicochemical evidence. Among them, ligustroside and (+)-pinoresinol significantly inhibited nitric oxide production in lipopolysaccharide-activated RAW264.7 macrophages.
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