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The Synthesis, Fungicidal Activity, and in Silico Study of Alkoxy Analogues of Natural Precocenes I, II, and III. Molecules 2022; 27:molecules27217177. [DOI: 10.3390/molecules27217177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Revised: 10/15/2022] [Accepted: 10/18/2022] [Indexed: 11/16/2022] Open
Abstract
This study aimed to synthesize, characterize, and explore the eco-friendly and antifungal potential of precocenes and their derivatives. The organic synthesis of the mono-O-alkyl-2,2-dimethyl 2H-1-chromene series, including the natural product precocene I, and the di-O-alkyl 2,2-dimethyl-2H-1-chromene series, including the natural 2H-1-chromenes precocenes II and III, was achieved. The synthetic compounds were subjected to spectroscopic analysis, 1HNMR,13CNMR, and mass characterization. The antifungal activity of synthesized precocenes I, II, and III, as well as their synthetic intermediates, was evaluated by the poison food technique. Precocene II (EC50 106.8 µg × mL−1 and 4.94 µg mL−1), and its regioisomers 7a (EC50 97.18 µg × mL−1 and 35.30 µg × mL−1) and 7d (EC50 170.58 × µg mL−1), exhibited strong fungitoxic activity against Aspergillus niger and Rhizoctonia solani. Some of the novel chromenes, 11a and 11b, which had never been evaluated before, yielded stronger fungitoxic effects. Finally, docking simulations for compounds with promising fungitoxic activity were subjected to structure–activity relationship analyses against the polygalactouronases and voltage-dependent anion channels. Conclusively, precocenes and their regioisomers demonstrated promising fungitoxic activity; such compounds can be subjected to minor structural modifications to yield promising and novel fungicides.
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First Report on Comparative Essential Oil Profile of Stem and Leaves of Blepharispermum hirtum Oliver and Their Antidiabetic and Anticancer Effects. Metabolites 2022; 12:metabo12100907. [PMID: 36295808 PMCID: PMC9611305 DOI: 10.3390/metabo12100907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Revised: 09/22/2022] [Accepted: 09/23/2022] [Indexed: 12/05/2022] Open
Abstract
The current research was designed to explore the Blepharispermum hirtum Oliver (Asteraceae) stem and leaves essential oil (EO) composition extracted through hydro-distillation using gas chromatography-mass spectrometry (GC-MS) analysis for the first time. The EOs of the stem and leaves of B. hirtum were comparatively studied for the in vitro antidiabetic and anticancer potential using in vitro α-glucosidase and an MTT inhibition assay, respectively. In both of the tested samples, the same number of fifty-eight compounds were identified and contributed 93.88% and 89.07% of the total oil composition in the EOs of the stem and leaves of B. hirtum correspondingly. However, camphene was observed as a major compound (23.63%) in the stem EO, followed by β-selinene (5.33%) and β-elemene (4.66%) and laevo-β-pinene (4.38%). While in the EO of the leaves, the dominant compound was found to be 24-norursa-3,12-diene (9.08%), followed by β-eudesmol (7.81%), β-selinene (7.26%), thunbergol (5.84%), and caryophyllene oxide (5.62%). Significant antidiabetic potential was observed with an IC50 of 2.10 ± 0.57 µg/mL by the stem compared to the EO of the leaves of B. hirtum, having an IC50 of 4.30 ± 1.56 µg/mL when equated with acarbose (IC50 = 377.71 ± 1.34 µg/mL). Furthermore, the EOs offered considerable cytotoxic capabilities for MDA-MB-231. However, the EO of the leaves presented an IC50 = 88.4 ± 0.5 μg/mL compared to the EO of the stem of B. hirtum against the triple-negative breast cancer (MDA-MB-231) cell lines with an IC50 = 123.6 ± 0.8 μg/mL. However, the EOs were also treated with the human breast epithelial (MCF-10A) cell line, and from the results, it has been concluded that these oils did not produce much harm to the normal cell lines. Hence, the present research proved that the EOs of B. hirtum might be used to cure diabetes mellitus and human breast cancer. Moreover, further studies are considered to be necessary to isolate the responsible bioactive constituents to devise drugs for the observed activities.
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Reyes-Pérez V, Granados-Soto V, Linares E, Bye R, Mata R, Deciga-Campos M. Anti-inflammatory and anti-allodynic activities in mice of the essential oil and desmethylisoencecalin from Zinnia grandiflora Nuttall. JOURNAL OF ESSENTIAL OIL RESEARCH 2022. [DOI: 10.1080/10412905.2022.2118880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Valeria Reyes-Pérez
- Facultad de Química, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | | | - Edelmira Linares
- Instituto de Biología, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Robert Bye
- Instituto de Biología, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Rachel Mata
- Facultad de Química, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Myrna Deciga-Campos
- Escuela Superior de Medicina, Instituto Politécnico Nacional, Mexico City, Mexico
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Li Y, Luo B, Luo Z, Ma T, Fan L, Liu W, Fan J, Guo B, Xue W, Tang L. Design and synthesis of novel 2,2-dimethylchromene derivatives as potential antifungal agents. Mol Divers 2022; 27:589-601. [PMID: 35639225 DOI: 10.1007/s11030-022-10421-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 03/18/2022] [Indexed: 02/07/2023]
Abstract
In order to find novel environment-friendly and effective antifungal agents, four series of 2,2-dimethyl-2H-chromene derivatives were designed, synthesized and characterized by spectroscopic analysis. The antifungal activities of all the target compounds against nine phytopathogenic fungi were evaluated in vitro. Preliminary results indicated that most of the target compounds exhibited obvious antifungal activity at the concentration of 50 μg/mL. Among them, compound 4j displayed more promising antifungal potency against Fusarium solani, Pyricularia oryzae, Alternaria brassicae, Valsa mali and Alternaria alternata strains than the two commercially available fungicides chlorothalonil and hymexazol, with the corresponding EC50 values of 6.3, 7.7, 7.1, 7.5, 4.0 μg/mL, respectively. Moreover, the cell experiments results suggested that the target compounds had low cytotoxicity to the PC12 cell. This research will provide theoretical basis for the future application of 2,2-dimethyl-2H-chromenes as botanical fungicides in agriculture. Four series of novel, potent and low-toxicity 2,2-dimethyl-2H-chromene derivatives were designed and synthesized as agricultural antifungal agents. The in vitro antifungal experiments showed that compound 4j exhibited higher antifungal efficacy against five strains than the two commercially-available fungicides chlorothalonil and hymexazol.
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Affiliation(s)
- Yong Li
- School of Basic Medical Sciences, State Key Laboratory of Functions and Applications of Medicinal Plants, College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research On Common Chronic Diseases, Guizhou Medical University, Guiyang, 550004, People's Republic of China
| | - Bilan Luo
- School of Basic Medical Sciences, State Key Laboratory of Functions and Applications of Medicinal Plants, College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research On Common Chronic Diseases, Guizhou Medical University, Guiyang, 550004, People's Republic of China
| | - Zhongfu Luo
- School of Basic Medical Sciences, State Key Laboratory of Functions and Applications of Medicinal Plants, College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research On Common Chronic Diseases, Guizhou Medical University, Guiyang, 550004, People's Republic of China
| | - Taigui Ma
- School of Basic Medical Sciences, State Key Laboratory of Functions and Applications of Medicinal Plants, College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research On Common Chronic Diseases, Guizhou Medical University, Guiyang, 550004, People's Republic of China
| | - Lingling Fan
- School of Basic Medical Sciences, State Key Laboratory of Functions and Applications of Medicinal Plants, College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research On Common Chronic Diseases, Guizhou Medical University, Guiyang, 550004, People's Republic of China
| | - Wenjing Liu
- School of Basic Medical Sciences, State Key Laboratory of Functions and Applications of Medicinal Plants, College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research On Common Chronic Diseases, Guizhou Medical University, Guiyang, 550004, People's Republic of China
| | - Judi Fan
- School of Basic Medical Sciences, State Key Laboratory of Functions and Applications of Medicinal Plants, College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research On Common Chronic Diseases, Guizhou Medical University, Guiyang, 550004, People's Republic of China
| | - Bing Guo
- School of Basic Medical Sciences, State Key Laboratory of Functions and Applications of Medicinal Plants, College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research On Common Chronic Diseases, Guizhou Medical University, Guiyang, 550004, People's Republic of China
| | - Wei Xue
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, 550025, People's Republic of China
| | - Lei Tang
- School of Basic Medical Sciences, State Key Laboratory of Functions and Applications of Medicinal Plants, College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research On Common Chronic Diseases, Guizhou Medical University, Guiyang, 550004, People's Republic of China.
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Anchoring Cu (II) on Fe3O4@ SiO2/Schiff base: a green, recyclable, and extremely efficient magnetic nanocatalyst for the synthesis of 2-amino-4H-chromene derivatives. RESEARCH ON CHEMICAL INTERMEDIATES 2022. [DOI: 10.1007/s11164-022-04732-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Lu T, Yan Y, Zhang T, Zhang G, Xiao T, Cheng W, Jiang W, Wang J, Tang X. Design, Synthesis, Biological Evaluation, and Molecular Modeling of Novel 4 H-Chromene Analogs as Potential Succinate Dehydrogenase Inhibitors. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:10709-10721. [PMID: 34476938 DOI: 10.1021/acs.jafc.1c03304] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Thirty-one new 4H-chromene derivatives were designed and synthesized. Their structures were identified with IR, 1H NMR, 13C NMR, and HRMS. The crystal structure of compound 2a was determined by single-crystal X-ray diffraction. Their antifungal activities were evaluated against Pyricularia oryzae, Erysiphe graminis, Coniella diplodiella, Pseudoperonospora cubensis, and Sclerotinia sclerotiorum. These results demonstrated that most compounds exhibited remarkable inhibitory activities at 20 μg/mL. Compounds 4b and 4c displayed excellent antifungal activity against S. sclerotiorum and possessed better efficacy than fluopyram. At the same time, the inhibitory activity of the bioactive compounds was evaluated against succinate dehydrogenase (SDH). The results showed that these compounds possessed outstanding activity. Compounds 4b and 4c displayed better inhibitory activity than fluopyram. The molecular modeling results revealed that compound 4c had stronger affinity to SDH than fluopyram. It is the first time that the inhibitory activity of 4H-chromene analogs against SDH has been reported.
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Affiliation(s)
- Tong Lu
- School of Science, Xihua University, Chengdu 610039, P.R. China
| | - Yingkun Yan
- School of Science, Xihua University, Chengdu 610039, P.R. China
| | - Tingting Zhang
- School of Science, Xihua University, Chengdu 610039, P.R. China
| | - Guilan Zhang
- School of Science, Xihua University, Chengdu 610039, P.R. China
| | - Tingting Xiao
- School of Science, Xihua University, Chengdu 610039, P.R. China
| | - Wei Cheng
- School of Science, Xihua University, Chengdu 610039, P.R. China
| | - Wenjing Jiang
- School of Science, Xihua University, Chengdu 610039, P.R. China
| | - Jingwen Wang
- School of Science, Xihua University, Chengdu 610039, P.R. China
| | - Xiaorong Tang
- School of Science, Xihua University, Chengdu 610039, P.R. China
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Nagamani M, Jalapathi P, Shankar B, Neelamma M, Krishna TM. An Efficient Oxidative Difunctionalisation of 2-Amino-2H-chromene and Antimicrobial Activity of the Synthesized Tetrahydrochromene Derivatives. RUSS J GEN CHEM+ 2019. [DOI: 10.1134/s1070363219050207] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Escandón-Rivera S, Pérez-Vásquez A, Navarrete A, Hernández M, Linares E, Bye R, Mata R. Anti-Hyperglycemic Activity of Major Compounds from Calea ternifolia. Molecules 2017; 22:molecules22020289. [PMID: 28216594 PMCID: PMC6155573 DOI: 10.3390/molecules22020289] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 02/08/2017] [Accepted: 02/09/2017] [Indexed: 12/28/2022] Open
Abstract
Demethylisoencecalin (1) and caleins A (4) and C (5) (3.16–31.6 mg/kg, p.o.), the major components from an infusion of Calea ternifolia controlled postprandial glucose levels during an oral sucrose tolerance test (OSTT, 3 g/kg) in normal and nicotinamide/streptozotocin (NA/STZ, 40/100 mg/kg) hyperglicemic mice. The effects were comparable to those of acarbose (5 mg/kg). During the isolation of 1, 4, and 5, four additional metabolites not previously reported for the plant, were obtained, namely 6-acetyl-5-hydroxy-2-methyl-2-hydroxymethyl-2H-chromene (3), herniarin (6), scoparone (7), and 4′,7-dimethylapigenin (8). In addition, the structure of calein C (5) was confirmed by X-ray analysis. Pharmacological evaluation of the essential oil of the species (31.6–316.2 mg/kg, p.o.) provoked also an important decrement of blood glucose levels during an OSTT. Gas chromatography coupled with mass spectrometry (GC-MS) analysis of the headspace solid phase microextraction (HS-SPME)-adsorbed compounds and active essential oil obtained by hydrodistillation revealed that chromene 1 was the major component (19.92%); sesquiterpenes represented the highest percentage of the essential oil content (55.67%) and included curcumene (7.10%), spathulenol (12.95%) and caryophyllene oxide (13.0%). A suitable High Performance Liquid Chromatography (HPLC) method for quantifying chromenes 1 and 6-hydroxyacetyl-5-hydroxy-2,2-dimethyl-2H-chromene (2) was developed and validated according to standard protocols.
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Affiliation(s)
- Sonia Escandón-Rivera
- Facultad de Química, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico.
| | - Araceli Pérez-Vásquez
- Facultad de Química, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico.
| | - Andrés Navarrete
- Facultad de Química, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico.
| | - Mariana Hernández
- Facultad de Química, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico.
| | - Edelmira Linares
- Instituto de Biología, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico.
| | - Robert Bye
- Instituto de Biología, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico.
| | - Rachel Mata
- Facultad de Química, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico.
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El-Agrody AM, Amr AEGE, Sabry NM, Al-Omar MA, Ghabbour HA. Crystal structure of 3-amino-9-methoxy-1-phenyl-1H-benzo[f]chromene-2-carbonitrile, C21H16N2O2. Z KRIST-NEW CRYST ST 2016. [DOI: 10.1515/ncrs-2016-0128] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractC21H16N2O2, monoclinic, P21/n (no. 14), a = 13.4768(7) Å, b = 6.9225(3) Å, c = 18.2840(8) Å, β = 107.601(2)°, V = 1625.92(13) Å3, Z = 4, Rgt(F) = 0.0593, wRref(F2) = 0.1529, T = 100 K.
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Affiliation(s)
- Ahmed M. El-Agrody
- 1Chemistry Department, Faculty of Science, Al-Azhar University, 11884 Nasr City, Cairo, Egypt
| | - Abd El-Galil E. Amr
- 2Pharmaceutical Chemistry Department, College of Pharmacy, Drug Exploration and Development Chair (DEDC), King Saud University, Riyadh 11451, Saudi Arabia
- 3Applied Organic Chemistry Department, National Research Centre, Dokki, Giza 12622, Egypt
| | - Nermien M. Sabry
- 4Applied Organic Chemistry Department, National Research Center, Dokki 12622, Cairo, Egypt
- 5Chemistry Department, Girls College of Education, King Khalid University, Abha, Saudi Arabia
| | - Mohamed A. Al-Omar
- 6Pharmaceutical Chemistry Department, College of Pharmacy, Drug Exploration and Development Chair (DEDC), King Saud University
- 7Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Hazem A. Ghabbour
- 7Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
- 8Department of Medicinal Chemistry, Faculty of Pharmacy, University of Mansoura, Mansoura 35516, Egypt
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Daedalin A, a Metabolite ofDaedalea dickinsii, Inhibits Melanin Synthesis in anin VitroHuman Skin Model. Biosci Biotechnol Biochem 2014; 73:627-32. [DOI: 10.1271/bbb.80695] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Šimović M, Delaš F, Gradvol V, Kocevski D, Pavlović H. Antifungal effect of eugenol and carvacrol against foodborne pathogens Aspergillus carbonarius and Penicillium roqueforti in improving safety of fresh-cut watermelon. JOURNAL OF COMPLEMENTARY MEDICINE RESEARCH 2014; 3:91-6. [PMID: 26401354 PMCID: PMC4566673 DOI: 10.5455/jice.20140503090524] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Accepted: 05/03/2014] [Indexed: 11/03/2022]
Abstract
BACKGROUND Essential oil components eugenol and carvacrol (ranging between 100 and 200 ppm for carvacrol and between 250 and 750 ppm for eugenol) were tested for antifungal activity against foodborne pathogenic fungal species Aspergillus carbonarius A1102 and Penicillium roqueforti PTFKK29 in in vitro and in situ conditions. MATERIALS AND METHODS In vitro antifungal activity of eugenol and carvacrol was evaluated by macrobroth method, while watermelon Citrullus lanatus L. Sorento slices were used for antifungal assays in situ. RESULTS Selected components, eugenol and carvacrol showed significant inhibitory effect against tested fungi (A. carbonarius A1102 and P. roqueforti PTFKK29) in yeast extract sucrose broth, as well as in in situ conditions. The minimal inhibitory concentration (MIC) of eugenol against A. carbonarius A1102 determined by macrobroth method was 2000 ppm, while against P. roqueforti PTFKK29 determined MIC was 1000 ppm. Carvacrol inhibited growth of A. carbonarius A1102 at minimal concentration of 500 ppm, while against P. roqueforti PTFKK29, MIC was 250 ppm. The assays in real food system watermelon slices for eugenol and carvacrol show that the inhibitory effect against both selected fungal species was concentration dependent. Furthermore, our results showed that antifungal effect of carvacrol as well as eugenol applied on watermelon slices in all concentrations was a result of effective synergy between an active antifungal compound and lower incubation temperature (15°C) in inhibition of A. carbonarius A1102. CONCLUSION The present study suggests that the use of eugenol and carvacrol is promising natural alternative to the use of food chemical preservatives, in order to improve safety and quality of fresh-cut and ready-to-eat fruits.
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Affiliation(s)
- Mirela Šimović
- Department of Microbiology, Public Health Institute of the Osijek-Baranja County, Franje Krežme 1, 31 000 Osijek, Croatia
| | - Frane Delaš
- Department of Biochemical Engineering, Faculty of Food Technology and Biotechnology, Pierottijeva 6, 10 000 Zagreb, Croatia
| | - Vedran Gradvol
- Department of Food and Nutrition Research, Food Microbiology Unit, Faculty of Food Technology Osijek, Franje Kuhača 20, 31 000 Osijek, Croatia
| | - Dragana Kocevski
- Department of Food and Nutrition Research, Food Microbiology Unit, Faculty of Food Technology Osijek, Franje Kuhača 20, 31 000 Osijek, Croatia
| | - Hrvoje Pavlović
- Department of Food and Nutrition Research, Food Microbiology Unit, Faculty of Food Technology Osijek, Franje Kuhača 20, 31 000 Osijek, Croatia
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Kocevski D, Du M, Kan J, Jing C, Lačanin I, Pavlović H. Antifungal Effect ofAllium tuberosum,Cinnamomum cassia,andPogostemon cablinEssential Oils and Their Components Against Population ofAspergillusSpecies. J Food Sci 2013; 78:M731-7. [DOI: 10.1111/1750-3841.12118] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2012] [Accepted: 02/22/2013] [Indexed: 11/30/2022]
Affiliation(s)
- Dragana Kocevski
- Faculty of Agriculture, Josip Juraj Strossmayer Univ. of Osijek; Kralja P. Svačića 1d; Osijek; Croatia
| | - Muying Du
- College of Food Science, Southwest Univ.; Tiansheng Rd. 1; Chongqing; P.R. China
| | - Jianquan Kan
- College of Food Science, Southwest Univ.; Tiansheng Rd. 1; Chongqing; P.R. China
| | - Chengjun Jing
- College of Biotechnology, Southwest Univ.; Chongqing; P.R. China
| | - Ines Lačanin
- Faculty of Food Technology; Osijek, Josip Juraj Strossmayer Univ. of Osijek; F. Kuhača 20; Osijek; Croatia
| | - Hrvoje Pavlović
- Faculty of Food Technology; Osijek, Josip Juraj Strossmayer Univ. of Osijek; F. Kuhača 20; Osijek; Croatia
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Fatope M, Varma G, Alzri N, Marwah R, Nair R. ent-Kaurene Diterpenoids from Blepharispermum hirtum. Chem Biodivers 2010; 7:1862-70. [DOI: 10.1002/cbdv.200900389] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Lee YR, Wang X, Xia L. An efficient and rapid synthetic route to biologically interesting pyranochalcone natural products. Molecules 2007; 12:1420-9. [PMID: 17909497 PMCID: PMC6149329 DOI: 10.3390/12071420] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2007] [Revised: 07/10/2007] [Accepted: 07/10/2007] [Indexed: 11/16/2022] Open
Abstract
An efficient and concise total synthesis of naturally occurring pyranochalcones was achieved from readily available 2,4-dihydroxyacetophenone and 2,4-dihydroxy-6-methoxyacetophenone. The key steps in the synthetic strategy were ethylenediamine diacetate-catalyzed benzopyran formation and aldol reactions.
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Affiliation(s)
- Yong Rok Lee
- School of Chemical Engineering and Technology, Yeungnam University, Gyeongsan 712-749, Korea.
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Moulari B, Pellequer Y, Lboutounne H, Girard C, Chaumont JP, Millet J, Muyard F. Isolation and in vitro antibacterial activity of astilbin, the bioactive flavanone from the leaves of Harungana madagascariensis Lam. ex Poir. (Hypericaceae). JOURNAL OF ETHNOPHARMACOLOGY 2006; 106:272-8. [PMID: 16483735 DOI: 10.1016/j.jep.2006.01.008] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2005] [Revised: 12/01/2005] [Accepted: 01/12/2006] [Indexed: 05/06/2023]
Abstract
Harungana madagascariensis is well known for its topical antibacterial properties used in the elaboration of a lot of skin hygiene products. The aim of this study was, on the one hand, to evaluate the in vitro antibacterial activities of aqueous, ethanolic and ethyl acetate crude extracts of Harungana madagascariensis leaves against bacterial strains representative of skin microflora and, on the other hand, to determine the chemical structure of the active compound. Only the ethyl acetate leaf extract presented important antibacterial activity. Its fractionation was carried out by column chromatography using silica gel 60 and it yielded 11 fractions. A bioautographic method, revealed in these fractions the presence of a flavanone as the active compound astilbin or 3-O-alpha-L-rhamnoside-5,7,3',4'-tetrahydroxydihydroflavonol which was identified on the basis of its spectroscopic data. Concerning the antibacterial activity against the representative skin microflora of the armpit and feet, MIC and MBC ranged from 25 to 250 and 100 to 750 microg ml-1, respectively. The results showed that some bacteria considered to be responsible for bad odours at the armpit and feet levels, were destroyed at 200 microg ml-1 (MBC), a concentration sparing most of the useful saprophytic microflora. The minimal inhibitory quantity (MIQs) of astilbin ranged from 50 to 100 microg.
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Affiliation(s)
- B Moulari
- Laboratoire de Galénique et Biopharmacie, EA-3924 Sciences Séparatives et Biopharmaceutiques, UFR Sciences Médicales et Pharmaceutiques, Université de Franche-Comté, Place Saint-Jacques, 25030 Besançon Cedex, France.
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Céspedes CL, Salazar JR, Martínez M, Aranda E. Insect growth regulatory effects of some extracts and sterols from Myrtillocactus geometrizans (Cactaceae) against Spodoptera frugiperda and Tenebrio molitor. PHYTOCHEMISTRY 2005; 66:2481-93. [PMID: 16122768 DOI: 10.1016/j.phytochem.2005.07.010] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2004] [Revised: 06/15/2005] [Indexed: 05/04/2023]
Abstract
A methanol extract from the roots and aerial parts of Myrtillocactus geometrizans (Cactaceae) yielded peniocerol 1, macdougallin 2, and chichipegenin 3. The natural products 1, 2 their mixtures, MeOH and CH(2)Cl(2) extracts showed insecticidal and insect growth regulatory activity against fall armyworm [Spodoptera frugiperda J. E. Smith (Lepidoptera: Noctuidae)], an important insect pest of corn, and [Tenebrio molitor (Coleoptera)], a pest of stored grains in Mexico. The most active compounds were 1, 2, and a mixture (M(2)) of 1 and 2 (6:4). All these extracts, compounds and the mixture had insect growth regulating (IGR) activity between 5.0 and 50.0 ppm and insecticidal effects between 50 and 300 ppm in diets. The extracts were insecticidal to larvae, with lethal doses between 100 and 200 ppm. These compounds appear to have selective effects on the pre-emergence metabolism of Coleoptera, because in all treatments of the larvae of T. molitor, pupation were shortened and this process show precociousness in relation to controls. In contrast to S. frugiperda larvae, onset of pupation was noticeably delayed. Emergence in both cases was drastically diminished. In both pupae and in the few adults that were able to emerge, many deformations were observed. The results of these assays indicated that the compounds were more active than other known natural insect growth inhibitors such as gedunin and methanol extracts of Cedrela salvadorensis and Yucca periculosa. Peniocerol, macdougallin and chichipegenin, as well as mixtures of these substances, may be useful as natural insecticidal agents.
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Affiliation(s)
- Carlos L Céspedes
- Chemical Ecology Lab 2C, Natural Products Department, Chemistry Institute, Universidad Nacional Autónoma de México, Coyoacán.
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Ferraz ABF, Grivicich I, von Poser GL, Faria DH, Kayser GB, Schwartsmann G, Henriques AT, da Rocha AB. Antitumor activity of three benzopyrans isolated from Hypericum polyanthemum. Fitoterapia 2005; 76:210-5. [PMID: 15752632 DOI: 10.1016/j.fitote.2004.12.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2003] [Accepted: 12/15/2004] [Indexed: 11/30/2022]
Abstract
In the present study we have investigated the in vitro antitumor effects of three benzopyrans, 6-isobutyryl-5,7-dimethoxy-2,2-dimethylbenzopyran (1), 7-hydroxy-6-isobutyryl-5-methoxy-2,2-dimethylbenzopyran (2) and 5-hydroxy-6-isobutyryl-7-methoxy-2,2-dimethylbenzopyran (3) isolated from Hypericum polyanthemum. The three compounds tested demonstrated potent growth inhibitory activity at 40 microg/ml (<25% control growth) in the NCI-H460, HT-29 and U-373MG human cell lines. Determination of cell cycle distribution demonstrated that the antiproliferative effect of the three benzopyrans could be associated to alterations in the cell cycle phase distribution. Treatment with the IC50 of the three compounds induced an arrested in S phase. Only in cells treated with compound 3 did the percentage of sub-G1 population increase up to 9%, suggesting that this compound induced more cell death than the others. Consistent with sub-G1 analysis, appreciable oligonucleosomal DNA fragmentation was only observed in the NCI-H460 cell line treated with compound 3. From these results it can be suggested that despite no differences among the cytotoxicity of the three compounds, it was observed that the mechanism of their antiproliferative effects appears to be different.
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Affiliation(s)
- Alexandre B F Ferraz
- Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Av. Ipiranga, 2752, Porto Alegre, RS, Brazil
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