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Bitombo AN, Zintchem AAA, Atchadé ADT, Mbabi Nyemeck Ii N, Bikobo DSN, Pegnyemb DE, Bochet CG. Antiplasmodial activities of indole alkaloids from Tabernaemontana penduliflora K. Schum (Apocynaceae). Fitoterapia 2021; 153:104941. [PMID: 34029654 DOI: 10.1016/j.fitote.2021.104941] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 05/16/2021] [Accepted: 05/19/2021] [Indexed: 11/26/2022]
Abstract
Five undescribed carboxy-indole alkaloids with corynanthe skeleton, penduflorines A-E (1-3) as well as a voacangine-N-oxide alkaloid, tabernaemontine (4), were isolated along with eight other known compounds (5-12) from the trunk bark of Tabernaemontana penduliflora K. Schum (Apocynaceae). Their structures were determined by means of spectroscopic and spectrometric methods such as UV, IR, NMR and HR-ESI-MS. Antiplasmodial activities of new isolates were evaluated against two strains of Plasmodium falciparum 3D7 and Dd2 by the Sybr green I-based fluorescence assay setup. Those compounds showed good in vitro activities. Among them, penduflorines A and B (1a and 1b) as well as tabernaemontine (4) showed significant inhibitory activities against the two strains with IC50 values ranged between 1.85 and 7.88 μg/mL. This is the first report of quaternary-N-indole alkaloids (1a, 1b, 2, 3a, 3b and 4) occurring in the form of zwitterion from Tabernaemontana genus.
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Affiliation(s)
- André Néhémie Bitombo
- Faculty of science, Department of Organic Chemistry, University of Yaoundé 1, Yaoundé, Cameroon; Department of Chemie, Universität of Fribourg, Fribourg, Switzerland
| | - Auguste Abouem A Zintchem
- Faculty of science, Department of Organic Chemistry, University of Yaoundé 1, Yaoundé, Cameroon; Department of Chemistry, Higher Teacher's Training College, University of Yaoundé 1, Yaoundé, Cameroon
| | | | | | - Dominique Serge Ngono Bikobo
- Faculty of science, Department of Organic Chemistry, University of Yaoundé 1, Yaoundé, Cameroon; Department of Chemie, Universität of Fribourg, Fribourg, Switzerland.
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Ali AH, Agustar HK, Hassan NI, Latip J, Embi N, Sidek HM. Data on antiplasmodial and stage-specific inhibitory effects of Aromatic (Ar)-Turmerone against Plasmodium falciparum 3D7. Data Brief 2020; 33:106592. [PMID: 33318979 PMCID: PMC7725727 DOI: 10.1016/j.dib.2020.106592] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 11/19/2020] [Accepted: 11/23/2020] [Indexed: 11/30/2022] Open
Abstract
Aromatic (ar)-turmerone is one of the aromatic constituents abundant in turmeric essential oil from Curcuma longa. Ar-turmerone exhibited anti-inflammatory properties. So far, antiplasmodial data for ar-turmerone is still not reported. The data showed the in vitro antiplasmodial effect of ar-turmerone against Plasmodium falciparum 3D7 (chloroquine-sensitive) via Plasmodium lactate dehydrogenase assay (pLDH) and cytotoxic effect against Vero mammalian kidney cells using 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) colourimetric assay. Selectivity indexes of ar-turmerone were calculated based on inhibition concentration at 50% of parasite growth (IC50) from MTT and pLDH assays and the effects of ar-turmerone were compared to the antimalarial reference drug chloroquine diphosphate. The inhibitory effect of ar-turmerone at the intraerythrocytic stages of plasmodial lifecycles was evaluated via a stage-dependant susceptibility test. The antiplasmodial and cytotoxic activities of ar-turmerone revealed IC50 values of 46.8 ± 2.4 μM and 820.4 ± 1.5 μM respectively. The selectivity index of ar-turmerone was 17.5. Ar-turmerone suppressed the ring-trophozoite transition stage of the intraerythrocytic life cycle of P. falciparum 3D7.
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Affiliation(s)
- Amatul Hamizah Ali
- Department of Chemical Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia
| | - Hani Kartini Agustar
- Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia
| | - Nurul Izzaty Hassan
- Department of Chemical Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia
| | - Jalifah Latip
- Department of Chemical Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia
| | - Noor Embi
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia
| | - Hasidah Mohd Sidek
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia
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Douanla PD, Tabopda TK, Tchinda AT, Cieckiewicz E, Frédérich M, Boyom FF, Tsabang N, Yeboah S, Nkengfack AE, Tchuendem MHK. Antrocarines A-F, antiplasmodial ergostane steroids from the stem bark of Antrocaryon klaineanum. Phytochemistry 2015; 117:521-526. [PMID: 26232555 DOI: 10.1016/j.phytochem.2015.07.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 06/24/2015] [Accepted: 07/15/2015] [Indexed: 06/04/2023]
Abstract
During a study on the chemistry and biological activity of Antrocaryon klaineanum Pierre, six new sterols including 4,24(28)-ergostadiene-6α,7α-diol (1), 6α-methoxy-4,24(28)-ergostadiene-7α,20S-diol (2), 6α-methoxy-4,24(28)-ergostadien-7α-ol (3), 20S-hydroxy-24(28)-ergosten-3-one (4), 7α-hydroxy-4,24(28)-ergostadien-3-one (5), and 24(28)-ergostene-3β,6α-diol (6) were characterized by physical and spectroscopic means. The known steroids 7 and 8 were also isolated. The crude extract and the isolated compounds were evaluated for their ability to inhibit the 3D7 strain of Plasmodium falciparum. Compounds 2, 3, and 8 showed potent activity while that of the crude extract was moderate.
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Affiliation(s)
- Pascal D Douanla
- Department of Organic Chemistry, Faculty of Science, The University of Yaounde-1, P.O. Box 812, Yaounde, Cameroon
| | - Turibio Kuiate Tabopda
- Department of Organic Chemistry, Faculty of Science, The University of Yaounde-1, P.O. Box 812, Yaounde, Cameroon
| | - Alembert T Tchinda
- Laboratory of Phytochemistry, Institute of Medical Research and Medicinal Plant Studies, (IMPM), P.O. Box 6163, Yaounde, Cameroon
| | - Ewa Cieckiewicz
- Université de Liège, Laboratoire de Pharmacognosie, Centre Interfacultaire de Recherche sur le médicament (CIRM), Département de Pharmacie, Université de Liège, B36, B-4000 Liège, Belgium
| | - Michel Frédérich
- Université de Liège, Laboratoire de Pharmacognosie, Centre Interfacultaire de Recherche sur le médicament (CIRM), Département de Pharmacie, Université de Liège, B36, B-4000 Liège, Belgium
| | - Fabrice Fekam Boyom
- Department of Biochemistry, Faculty of Science, The University of Yaounde-1, P.O. Box 812, Yaounde, Cameroon
| | - Nole Tsabang
- Laboratory of Phytochemistry, Institute of Medical Research and Medicinal Plant Studies, (IMPM), P.O. Box 6163, Yaounde, Cameroon
| | - Samuel Yeboah
- Department of Chemistry, University of Botswana, Private Bag 00704, Gaborone, Botswana
| | - Augustin E Nkengfack
- Department of Organic Chemistry, Faculty of Science, The University of Yaounde-1, P.O. Box 812, Yaounde, Cameroon
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