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Tóth G, Herke I, Gáti T, Vágvölgyi M, Berkecz R, Parfenova LV, Ueno M, Yokoi T, Nakagawa Y, Hunyadi A. A Commercial Extract of Cyanotis arachnoidea Roots as a Source of Unusual Ecdysteroid Derivatives with Insect Hormone Receptor Binding Activity. JOURNAL OF NATURAL PRODUCTS 2021; 84:1870-1881. [PMID: 34143640 PMCID: PMC8314276 DOI: 10.1021/acs.jnatprod.0c01274] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Indexed: 05/13/2023]
Abstract
Ecdysteroids act as molting hormones in insects and as nonhormonal anabolic agents and adaptogens in mammals. A wide range of ecdysteroid-containing herbal extracts are available worldwide as food supplements. The aim of this work was to study such an extract as a possible industrial source of new bioactive ecdysteroids. A large-scale chromatographic isolation was performed from an extract of Cyanotis arachnoidea roots. Ten ecdysteroids (1-10) including eight new compounds were isolated and characterized by extensive nuclear magnetic resonance studies. Highly unusual structures were identified, including a H-14β (1, 2, 4, and 10) moiety, among which a 14β(H)17β(H) phytosteroid (1) is reported for the first time. Compounds with an intact side chain (4-10) and 11 other natural or semisynthetic ecdysteroids (11-21) were tested for insect ecdysteroid receptor (EcR) binding activity. Two new compounds, i.e., 14-deoxydacryhainansterone (5) and 22-oxodacryhainansterone (6), showed strong EcR binding activity (IC50 = 41.7 and 380 nM, respectively). Six compounds were identified as EcR agonists and another two as antagonists using a transgenic ecdysteroid reporter gene assay. The present results demonstrate that commercial C. arachnoidea extracts are rich in new, unusual bioactive ecdysteroids. Because of the lack of an authentic plant material, the truly biosynthetic or artifactual nature of these compounds cannot be confirmed.
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Affiliation(s)
- Gábor Tóth
- Department
of Inorganic and Analytical Chemistry, NMR Group, Budapest University of Technology and Economics, H-1111 Budapest, Hungary
| | - Ibolya Herke
- Institute of Pharmacognosy, Interdisciplinary
Excellence Centre, Institute of Pharmaceutical
Analysis, and Interdisciplinary Centre of Natural Products, University of Szeged, H-6720 Szeged, Hungary
| | - Tamás Gáti
- Servier
Research Institute of Medicinal Chemistry (SRIMC), H-1031 Budapest, Hungary
| | - Máté Vágvölgyi
- Institute of Pharmacognosy, Interdisciplinary
Excellence Centre, Institute of Pharmaceutical
Analysis, and Interdisciplinary Centre of Natural Products, University of Szeged, H-6720 Szeged, Hungary
| | - Róbert Berkecz
- Institute of Pharmacognosy, Interdisciplinary
Excellence Centre, Institute of Pharmaceutical
Analysis, and Interdisciplinary Centre of Natural Products, University of Szeged, H-6720 Szeged, Hungary
| | - Lyudmila V. Parfenova
- Institute
of Petrochemistry and Catalysis of Russian Academy of Sciences, 450075 Ufa, Russia
| | - Minori Ueno
- Graduate
School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Taiyo Yokoi
- Graduate
School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Yoshiaki Nakagawa
- Graduate
School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Attila Hunyadi
- Institute of Pharmacognosy, Interdisciplinary
Excellence Centre, Institute of Pharmaceutical
Analysis, and Interdisciplinary Centre of Natural Products, University of Szeged, H-6720 Szeged, Hungary
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Milojković-Opsenica D, Majstorović H, Radoičić A, Tešič Ž. 3-Cyanopropylsiloxane-bonded silica gel: Characteristics and applications in thin-layer chromatography. JPC-J PLANAR CHROMAT 2015. [DOI: 10.1556/jpc.28.2015.2.4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Hall J, Taschuk M, Brett M. Polarity-adjustable reversed phase ultrathin-layer chromatography. J Chromatogr A 2012; 1266:168-74. [DOI: 10.1016/j.chroma.2012.10.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2012] [Revised: 10/05/2012] [Accepted: 10/08/2012] [Indexed: 11/16/2022]
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Lapenna S, Dinan L. HPLC and TLC characterisation of ecdysteroid alkyl ethers. J Chromatogr B Analyt Technol Biomed Life Sci 2009; 877:2996-3002. [PMID: 19648067 DOI: 10.1016/j.jchromb.2009.07.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2008] [Revised: 06/29/2009] [Accepted: 07/12/2009] [Indexed: 12/15/2022]
Abstract
Semi-synthetic ecdysteroid alkyl ethers have increased potential over natural ecdysteroids as actuators of ligand-inducible gene-expression systems based on the ecdysteroid receptor for in vivo applications. However, a scalable synthesis of these compounds has yet to be developed. We report a set of reversed-phase (RP; C(18) and C(6)) and normal-phase (NP; diol) HPLC systems which can be used to analyse and separate ecdysteroid ethers with single or multiple O-methyl substitutions at the 2alpha-, 3beta-, 14alpha-, 22- and 25-positions. The elution order of methyl ether analogues of the prototypical ecdysteroid 20-hydroxyecdysone (20E) was 3-methyl<2-methyl<14-methyl<25-methyl<22-methyl with both C(18)- and C(6)-RP-HPLC, when eluted with methanol/water mixtures. Further, the elution order of 20E 22-O-alkyl ethers was methyl<ethyl<allyl<n-propyl<benzyl<n-butyl with both C(18)- and C(6)-RP-HPLC. Moreover, the ecdysteroid alkyl ethers can also be adequately resolved by NP-HPLC and silica HPTLC. On the latter, detection of ecdysteroid O-alkyl ethers with the p-anisaldehyde/sulphuric acid reagent distinguishes 22-O-alkyl ethers from non-22-O-alkyl ether analogues by the colour of the resulting spot.
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Affiliation(s)
- Silvia Lapenna
- Department of Biological Sciences, University of Exeter, Prince of Wales Road, EX4 4PS, Exeter, UK.
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Kalász H, Benkő B, Gulyás Z, Tekes K. Lipophilicity Determination using Both TLC and Calculations. J LIQ CHROMATOGR R T 2009. [DOI: 10.1080/10826070902854466] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- H. Kalász
- a Department of Pharmacology and Pharmacotherapy , Semmelweis University , Budapest, Hungary
| | - B. Benkő
- b Gedeon Richter Pharmaceutical Works , Budapest, Hungary
| | | | - K. Tekes
- d Department of Pharmacodynamics , Semmelweis University , Budapest, Hungary
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Jadhav AN, Rumalla CS, Avula B, Khan IA. HPTLC Method for Determination of 20-Hydroxyecdysone in Sida rhombifolia L. and Dietary Supplements. Chromatographia 2007. [DOI: 10.1365/s10337-007-0407-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Kalász H, Liktor‐Busa E, Janicsák G, Báthori M. Role of Preparative Rotation Planar Chromatography in the Isolation of Ecdysteroids. J LIQ CHROMATOGR R T 2007. [DOI: 10.1080/10826070600759967] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Huba Kalász
- a Department of Pharmacology & Therapeutics, Faculty of Medicine and Health Sciences , United Arab Emirates University , Al Aim
| | - Erika Liktor‐Busa
- b Department of Pharmacognosy , University of Szeged , Szeged, Hungary
| | - Gábor Janicsák
- c Economical and Botanical Research Institute of the Hungarian Academy of Science , Vácrátót, Hungary
| | - Mária Báthori
- b Department of Pharmacognosy , University of Szeged , Szeged, Hungary
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