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Aderibigbe SA, Idowu SO, Olaniyi AA, Wright CW, Fatokun AA. Bioactivity and cytotoxicity profiling of vincosamide and strictosamide, anthelmintic epimers from Sarcocephalus latifolius (Smith) Bruce leaf. JOURNAL OF ETHNOPHARMACOLOGY 2021; 265:113142. [PMID: 32697959 DOI: 10.1016/j.jep.2020.113142] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Revised: 06/09/2020] [Accepted: 07/01/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The leaf of Sarcocephalus latifolius is known to be used traditionally by the Fulanis in Nigeria to deworm animals. As helminthosis remains a major constraint to profitable livestock production worldwide, a precarious situation aggravated by the advent of resistant parasites, the discovery of new anthelmintics is a priority, necessitating exploration of medicinal plants for their anthelmintic principles. AIM OF THE STUDY To identify and characterise compounds with anthelmintic activity from the leaf of Sarcocephalus latifolius. MATERIALS AND METHODS Powdered S. latifolius leaves were extracted by successive maceration with n-hexane, chloroform and acetone. The dried extracts were evaluated for anthelmintic activity against Haemonchus placei adult worms, and the most active extract was subjected to bioassay-guided chromatographic separations. The isolated compounds were evaluated for cytotoxicity against the mammalian HeLa and MC3T3-E1 cell lines, using alamar blue and CellTitreGloTM to quantify cell viability. LC50 values were computed from the in vitro anthelmintic activity data by fitting to a non-linear regression equation (variable slope). Isolated compounds were characterized using spectroscopic and mass spectrometric analyses. RESULTS Anthelmintic activity LC50 values for n-hexane, chloroform and acetone extracts were 47.85, 35.76 and 5.72 (mg/mL), respectively. Chromatographic separation of acetone extract afforded two bioactive epimers, identified as vincosamide (LC50 14.7 mg/mL) and strictosamide (LC50 12.8 mg/mL). Cytotoxicity evaluation showed that, below 200 μg/mL (400 μM), neither compound was toxic to the HeLa or MC3T3-E1 cells. CONCLUSION Vincosamide and strictosamide could serve as novel scaffolds for the development of anthelmintic derivatives with improved potency and helminth selectivity.
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Affiliation(s)
- Segun A Aderibigbe
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Ibadan, Ibadan, Oyo State, Nigeria; School of Pharmacy and Medical Sciences, Faculty of Life Sciences, University of Bradford, Bradford, BD7 1DP, UK
| | - Sunday O Idowu
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Ibadan, Ibadan, Oyo State, Nigeria.
| | - Ajibola A Olaniyi
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Ibadan, Ibadan, Oyo State, Nigeria
| | - Colin W Wright
- School of Pharmacy and Medical Sciences, Faculty of Life Sciences, University of Bradford, Bradford, BD7 1DP, UK
| | - Amos A Fatokun
- School of Pharmacy and Medical Sciences, Faculty of Life Sciences, University of Bradford, Bradford, BD7 1DP, UK.
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Park E, Cheon CH. A general strategy for the synthesis of indoloquinolizine alkaloids via a cyanide-catalyzed imino-Stetter reaction. Org Biomol Chem 2017; 15:10265-10275. [DOI: 10.1039/c7ob02691a] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A general synthetic strategy applicable to indoloquinolizine alkaloids has been developed using a cyanide-catalyzed imino-Stetter reaction as a key step.
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Affiliation(s)
- Eunjoon Park
- Department of Chemistry
- Korea University
- Seoul 02841
- Republic of Korea
| | - Cheol-Hong Cheon
- Department of Chemistry
- Korea University
- Seoul 02841
- Republic of Korea
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Calvert MB, Sperry J. Bioinspired total synthesis and structural revision of yuremamine, an alkaloid from the entheogenic plant Mimosa tenuiflora. Chem Commun (Camb) 2015; 51:6202-5. [PMID: 25756921 DOI: 10.1039/c5cc00380f] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Guided by a biosynthetic hypothesis, a serendipitous total synthesis of yuremamine has resulted in its structural revision from the putative pyrroloindole (1) to the flavonoidal indole (2), which was initially proposed as a biosynthetic intermediate.
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Affiliation(s)
- Matthew B Calvert
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland, 1010, New Zealand.
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Hu S, Wang B, Zhang Y, Tang W, Fang M, Lu T, Du D. N-Heterocyclic carbene-catalyzed annulation of cyclic β-enamino esters with enals: access to functionalized indolo[2,3-a]quinolizidines. Org Biomol Chem 2015; 13:4661-7. [DOI: 10.1039/c5ob00176e] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A novel synthetic approach to functionalized indolo[2,3-a]quinolizidines is developed via an N-heterocyclic carbene-catalyzed annulation of cyclic β-enamino esters with enals.
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Affiliation(s)
- Shihe Hu
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Bingyang Wang
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Yu Zhang
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Weifang Tang
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Mengyuan Fang
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Tao Lu
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
| | - Ding Du
- State Key Laboratory of Natural Medicines
- Department of Organic Chemistry
- China Pharmaceutical University
- Nanjing
- P. R. China
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Wu X, Nie L, Fang H, Chen J, Cao W, Zhao G. Organocatalyzed Cascade Reactions of Cyclic β-Enamino Esters and α,β-Unsaturated Aldehydes Leading to Indoloquinolizidines and Benzoquinolizidines. European J Org Chem 2011. [DOI: 10.1002/ejoc.201101105] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Xu XY, Yang XH, Li SZ, Song QS. Two New Indole Alkaloids from the Bark of Anthocephalus chinensis. Helv Chim Acta 2011. [DOI: 10.1002/hlca.201100038] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Xuan WD, Chen HS, Du JL, Liang S, Li TZ, Cai DG. Two new indole alkaloids from Nauclea officinalis. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2006; 8:719-22. [PMID: 17145660 DOI: 10.1080/10286020500246741] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Two new indole alkaloids, naucleactonin A and B, along with two known compounds, naucleficine and nauclefidine, were isolated from the bark and wood of Naucleaofficinalis, which has been used as an anti-inflammatory and anti-bacterial agent in folk medicine. Their chemical structures were elucidated by the spectral data, especially 1D and 2D NMR experiments.
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Affiliation(s)
- W-D Xuan
- Department of Natural Medicinal Chemistry, School of Pharmacy, Second Military Medical University, and PLA 411th Hospital, Shanghai, 200083, China
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Pham VC, Ma J, Thomas SJ, Xu Z, Hecht SM. Alkaloids from Alangium javanicum and Alangium grisolleoides that mediate Cu2+-dependent DNA strand scission. JOURNAL OF NATURAL PRODUCTS 2005; 68:1147-52. [PMID: 16124751 DOI: 10.1021/np058013j] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Crude CH2Cl2-MeOH extracts prepared from Alangium javanicum and A. grisolleoides were found to induce DNA strand breakage in the presence of Cu2+ and were subjected to bioassay-guided fractionation to permit identification of the active principle(s). Javaniside (1), a novel alkaloid possessing an unusual monoterpenoid oxindole skeleton, was identified as an active principle contributing to the DNA cleavage activity observed for the crude extract of A. javanicum. Alangiside (2), a tetrahydroisoquinoline monoterpene glucoside widely distributed in the genus Alangium, was also isolated from A. grisolleoides as a new type of Cu2+-dependent DNA cleavage agent. The relative configuration of the asymmetric centers in javaniside was established by analysis of 1H-1H coupling constants and NOESY correlations. Semisynthesis of javaniside from secologanin (3) established the absolute stereochemistry of javaniside.
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Affiliation(s)
- Van Cuong Pham
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22901, USA
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Takayama H. Chemistry and pharmacology of analgesic indole alkaloids from the rubiaceous plant, Mitragyna speciosa. Chem Pharm Bull (Tokyo) 2005; 52:916-28. [PMID: 15304982 DOI: 10.1248/cpb.52.916] [Citation(s) in RCA: 219] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The leaves of a tropical plant, Mitragyna speciosa KORTH (Rubiaceae), have been traditionally used as a substitute for opium. Phytochemical studies of the constituents of the plant growing in Thailand and Malaysia have led to the isolation of several 9-methoxy-Corynanthe-type monoterpenoid indole alkaloids, including new natural products. The structures of the new compounds were elucidated by spectroscopic and/or synthetic methods. The potent opioid agonistic activities of mitragynine, the major constituent of this plant, and its analogues were found in in vitro and in vivo experiments and the mechanisms underlying the analgesic activity were clarified. The essential structural features of mitragynines, which differ from those of morphine and are responsible for the analgesic activity, were elucidated by pharmacological evaluation of the natural and synthetic derivatives. Among the mitragynine derivatives, 7-hydroxymitragynine, a minor constituent of M. speciosa, was found to exhibit potent antinociceptive activity in mice.
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Affiliation(s)
- Hiromitsu Takayama
- Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan.
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Takayama H, Tsutsumi SI, Kitajima M, Santiarworn D, Liawruangrath B, Aimi N. Gluco-indole alkaloids from Nauclea cadamba in Thailand and transformation of 3 alpha-dihydrocadambine into the indolopyridine alkaloid, 16-carbomethoxynaufoline. Chem Pharm Bull (Tokyo) 2003; 51:232-3. [PMID: 12576667 DOI: 10.1248/cpb.51.232] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Three monoterpenoid gluco-indole alkaloids, 3beta-isodihydrocadambine, cadambine, and 3alpha-dihydrocadambine, were isolated from Nauclea cadamba ROXB. growing in Thailand. The stereochemistry at C19 in 3beta-isodihydrocadambine was elucidated to be R by spectroscopic analysis. Treatment of 3alpha-dihydrocadambine with beta-glucosidase in aqueous ammonium acetate solution gave an indolopyridine alkaloid, 16-carbomethoxynaufoline, and an unusually rearranged compound.
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Takayama H, Ishikawa H, Kitajima M, Aimi N. Formation of an unusual dimeric compound by lead tetraacetate oxidation of a corynanthe-type indole alkaloid, mitragynine. Chem Pharm Bull (Tokyo) 2002; 50:960-3. [PMID: 12130854 DOI: 10.1248/cpb.50.960] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Lead tetraacetate oxidation of a Corynanthe-type indole alkaloid, mitragynine, produced mainly 7-acetoxyindolenine derivative (2) together with a dimeric compound (4) as a minor product. The novel structure having a bridge between the C-11' and C-7 positions in the respective indolenine parts and its formation mechanism were studied.
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Takayama H, Ishikawa H, Kurihara M, Kitajima M, Sakai SI, Aimi N, Seki H, Yamaguchi K, Said IM, Houghton PJ. Structure revision of mitragynaline, an indole alkaloid in Mitragyna speciosa. Tetrahedron Lett 2001. [DOI: 10.1016/s0040-4039(01)00006-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Takayama H, Kurihara M, Kitajima M, Said IM, Aimi N. Isolation and Asymmetric Total Synthesis of a New Mitragyna Indole Alkaloid, (-)-Mitralactonine. J Org Chem 1999; 64:1772-1773. [PMID: 11674259 DOI: 10.1021/jo9823644] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hiromitsu Takayama
- Faculty of Pharmaceutical Sciences, Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan, and Chemistry Department, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
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Takayama H, Kurihara M, Kitajima M, Said IM, Aimi N. New indole alkaloids from the leaves of Malaysian Mitragyna speciosa. Tetrahedron 1998. [DOI: 10.1016/s0040-4020(98)00464-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Takayama H, Sakai SI. Chapter 11 Monoterpenoid Indole Alkaloid Syntheses Utilizing Biomimetic Reactions. THE ALKALOIDS: CHEMISTRY AND BIOLOGY 1998. [DOI: 10.1016/s1099-4831(08)60049-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Hermecz I, Forgó PÉ, Böcskei Z, Fehér M, Kökösi J, Szász G. Nitrogen bridgehead compounds. Part 86. Synthesis and reactivity of 7,12-dihydropyrimido[1′,2′;1,2]pyrido[3,4-b]indol-4(6H)-ones. Debenzologues of rutaecarpine alkaloids. J Heterocycl Chem 1996. [DOI: 10.1002/jhet.5570330344] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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The first total synthesis of (−)-mitragynine, an analgesic indole alkaloid in mitragyna speciosa. Tetrahedron Lett 1995. [DOI: 10.1016/0040-4039(95)02022-h] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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