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Isyaka SM, Mas-Claret E, Langat MK, Hodges T, Selway B, Mbala BM, Mvingu BK, Mulholland DA. Cytotoxic diterpenoids from the leaves and stem bark of Croton haumanianus (Euphorbiaceae). Phytochemistry 2020; 178:112455. [PMID: 32692659 DOI: 10.1016/j.phytochem.2020.112455] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 04/16/2020] [Revised: 07/01/2020] [Accepted: 07/03/2020] [Indexed: 06/11/2023]
Abstract
The leaf extract of Croton haumanianus J. Léonard (Euphorbiaceae) yielded twenty-six compounds, including eight previously reported ent-kauranes and an ent-labdane and eight undescribed ent-kauranes, ent-16R-kauran-17-al, ent-3β-hydroxy-16R-kauran-17-al, ent-16S,17-epoxykauran-19-ol, ent-16S,17-epoxykauran-3β-ol, ent-17-palmityloxykaurane-3β,16β-diol, ent-17-palmityloxykauran-16β-ol, ent-3α,18-cyclokaurane-16β,17-diol and 19-nor-16α,17-dihydroxy-ent-kaur-4(18)-ene and three undescribed ent-clerodanes, dimethyl ent-15,16-epoxy-6β-hydroxy-1,3,13(16),14-clerodatetraen-20,12S-olide-18,19-dioate (saniolide A), dimethyl ent-15,16-epoxy-6β-hydroxy-1,3,13(16),14-clerodatetraen-20,12R-olide-18,19-dioate (12-epi-saniolide A), methyl ent-15,16-epoxy-1,3,13(16),14-clerodatetraen-18,6R:20,12S-diolide-19-oate (saniolide B). The stem bark extract yielded the ent-clerodane crotocorylifuran, and five undescribed ent-isopimaranes, ent-isopimara-8(14),15-dien-18-al, ent-18-hydroxyisopimara-8(14),15-dien-7-one, ent-isopimara-7,15-dien-18-oic acid, ent-isopimara-7,15-dien-18-ol and ent-isopimara-8,15-dien-7-oxo-18-oic acid. Three compounds, ent-kaurane-3β,16β,17-triol, ent-17-palmityloxykaurane-3β,16β-diol and ent-17-palmityloxykauran-16β-ol, showed selective activity against three of the NCI 60 cancer cell lines, the colon (HCT-116), the melanoma (M14) and the renal (786-0) cancer cell lines at a concentration of 10-5 M.
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Affiliation(s)
- Sani M Isyaka
- Natural Products Research Group, Department of Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, GU2 7XH, UK
| | - Eduard Mas-Claret
- Natural Products Research Group, Department of Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, GU2 7XH, UK
| | - Moses K Langat
- Natural Products Research Group, Department of Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, GU2 7XH, UK; Jodrell Laboratory, Natural Capital and Plant Health Department, Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3DS, United Kingdom
| | - Thomas Hodges
- Natural Products Research Group, Department of Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, GU2 7XH, UK
| | - Bethany Selway
- Natural Products Research Group, Department of Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, GU2 7XH, UK
| | - Blaise M Mbala
- Departement de Chimie et Industry, Faculte des Sciences, Universite de Kinshasa, B.P.190 Kin XI, Democratic Republic of the Congo
| | - Bienvenu K Mvingu
- Departement de Chimie et Industry, Faculte des Sciences, Universite de Kinshasa, B.P.190 Kin XI, Democratic Republic of the Congo
| | - Dulcie A Mulholland
- Natural Products Research Group, Department of Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, GU2 7XH, UK; School of Chemistry and Physics, University of KwaZulu-Natal, Durban, 4041, South Africa.
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Hirahama T, Umezawa M, Shoji M. Photoredox Michael addition of phenylmalononitrile onto α,β-unsaturated carboxylic acid. Tetrahedron Lett 2020; 61:151824. [DOI: 10.1016/j.tetlet.2020.151824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Affiliation(s)
- Aoife M. Foley
- School of Chemistry; Analytical & Biological Chemistry Research Facility; Synthesis & Solid State Pharmaceutical Centre; University College Cork; Cork Ireland
| | - Anita R. Maguire
- School of Chemistry & School of Pharmacy; Analytical & Biological Chemistry Research Facility; Synthesis & Solid State Pharmaceutical Centre; University College Cork; Cork Ireland
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Abstract
The first palladium-catalyzed diastereoselective conjugate addition of arylboronic acids to chiral imides is reported. The catalytic system employing 4-tert-butyloxazolidin-2-one as the chiral auxiliary in a mixed solvent system of MeOH/H2O (1:3) under an air atmosphere provides the optically active 3-arylbutanoic acid derivatives in excellent yields with high diastereoselectivity.
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Affiliation(s)
- Wubin Zhi
- The College of Chemistry and Molecular Engineering, Zhengzhou University , Zhengzhou 450052, People's Republic of China
| | - Jingya Li
- Tetranov Biopharm, LLC, and Collaborative Innovation Center of New Drug Research and Safety Evaluation, Zhengzhou, 450052, People's Republic of China
| | - Dapeng Zou
- The College of Chemistry and Molecular Engineering, Zhengzhou University , Zhengzhou 450052, People's Republic of China
| | - Yusheng Wu
- The College of Chemistry and Molecular Engineering, Zhengzhou University , Zhengzhou 450052, People's Republic of China.,Tetranov Biopharm, LLC, and Collaborative Innovation Center of New Drug Research and Safety Evaluation, Zhengzhou, 450052, People's Republic of China.,Tetranov International, Inc., 100 Jersey Avenue, Suite A340, New Brunswick, New Jersey 08901, United States
| | - Yangjie Wu
- The College of Chemistry and Molecular Engineering, Zhengzhou University , Zhengzhou 450052, People's Republic of China
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Jiménez J, López M, Carranza V, Mendoza A, Varela J, Sansinenea E, Ortiz A. Diastereoselective hydrogenation of α,β-unsaturated but-2-enamides to access the chiral 3-(p-tolyl) butanoic acids. Tetrahedron Lett 2017; 58:235-9. [DOI: 10.1016/j.tetlet.2016.12.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Bouaziz F, Koubaa M, Chaabene M, Barba FJ, Ghorbel RE, Chaabouni SE. High Throughput Screening for Bioactive Volatile Compounds and Polyphenols from Almond (Prunus amygdalus) Gum: Assessment of Their Antioxidant and Antibacterial Activities. J FOOD PROCESS PRES 2016. [DOI: 10.1111/jfpp.12996] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Fatma Bouaziz
- Enzyme Bioconversion Unit (UR13ES74), National School of Engineering; Sfax University; P.O. Box 1173-3038 Sfax Tunisia
| | - Mohamed Koubaa
- Sorbonne Universités, Université de Technologie de Compiègne, Département Génie des Procédés Industriels, Laboratoire Transformations Intégrées de la Matière Renouvelable (UTC/ESCOM, EA 4297 TIMR), Centre de Recherche de Royallieu; B.P. 20529 60205 Compiègne Cedex France
| | - Mariem Chaabene
- Enzyme Bioconversion Unit (UR13ES74), National School of Engineering; Sfax University; P.O. Box 1173-3038 Sfax Tunisia
| | - Francisco J. Barba
- Universitat de València, Faculty of Pharmacy, Nutrition and Food Science Area; Avda. Vicent Andrés Estellés, s/n 46100 Burjassot València Spain
| | - Rhoudha Ellouz Ghorbel
- Enzyme Bioconversion Unit (UR13ES74), National School of Engineering; Sfax University; P.O. Box 1173-3038 Sfax Tunisia
| | - Semia Ellouz Chaabouni
- Enzyme Bioconversion Unit (UR13ES74), National School of Engineering; Sfax University; P.O. Box 1173-3038 Sfax Tunisia
- Common Service Unit of Bioreactor Coupled With an Ultrafilter, National School of Engineering; Sfax University; PO Box 1173-3038 Sfax Tunisia
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Wu L, Zhong JC, Liu SK, Liu FP, Gao ZD, Wang M, Bian QH. Asymmetric synthesis of (R)-ar-curcumene, (R)-4,7-dimethyl-l-tetralone, and their enantiomers via cobalt-catalyzed asymmetric Kumada cross-coupling. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.tetasy.2015.11.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Abstract
This review article focuses mainly on the scientific developments concerning the enzyme-mediated synthesis of sesquiterpenes which have been reported in the academic and patent literature during the last twenty years. Nevertheless, this is not a comprehensive description of every single biotransformation involving sesquiterpenes. Only synthetic approaches that have represented a new and innovative perspective from a scientific standpoint are reported. More specifically, the review describes in depth how the use of metabolic engineering of the microbial biotransformations and of the isolated enzymes were exploited in order to perform chemo- and stereoselective chemical transformations of interest for sesquiterpenes synthesis.
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Affiliation(s)
- Stefano Serra
- C.N.R., Istituto di Chimica del Riconoscimento Molecolare; Via L. Mancinelli 7, 20131 Milano, Italy
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Aggarwal VK, Ball LT, Carobene S, Connelly RL, Hesse MJ, Partridge BM, Roth P, Thomas SP, Webster MP. Application of the lithiation–borylation reaction to the rapid and enantioselective synthesis of the bisabolane family of sesquiterpenes. Chem Commun (Camb) 2012; 48:9230-2. [DOI: 10.1039/c2cc32176a] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Abstract
Analogs of curcuphenol/elvirol, naturally occurring bisabolane sesquiterpenes, were prepared in six steps from alkyl-α-tetralones employing an aromatization reaction of cyclic dienone precursors and olefination of the key aldehyde intermediates. The in vitro antifungal activities of 6a, 6b, 6d, and 6g are also reported.
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Affiliation(s)
- María F. Plano
- Instituto de Química Rosario (IQUIR-CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario. Suipacha 531, S2002LRK-Rosario, ARGENTINA
| | - Guillermo R. Labadie
- Instituto de Química Rosario (IQUIR-CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario. Suipacha 531, S2002LRK-Rosario, ARGENTINA
| | - Melissa R. Jacob
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
| | - Babu L. Tekwani
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
| | - Raquel M. Cravero
- Instituto de Química Rosario (IQUIR-CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario. Suipacha 531, S2002LRK-Rosario, ARGENTINA
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Serra S. Lipase-mediated resolution of substituted 2-aryl-propanols: application to the enantioselective synthesis of phenolic sesquiterpenes. ACTA ACUST UNITED AC 2011; 22:619-28. [DOI: 10.1016/j.tetasy.2011.03.012] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Montiel L, Zepeda L, Tamariz J. Efficient Total Synthesis of Racemic Bisabolane Sesquiterpenes Curcuphenol and Xanthorrhizol Starting from Substituted Acetophenones. Helv Chim Acta 2010. [DOI: 10.1002/hlca.201000111] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Fujiwara M, Yagi N, Miyazawa M. Acetylcholinesterase inhibitory activity of volatile oil from Peltophorum dasyrachis Kurz ex Bakar (yellow batai) and Bisabolane-type sesquiterpenoids. J Agric Food Chem 2010; 58:2824-2829. [PMID: 20146521 DOI: 10.1021/jf9042387] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
In this study, the chemical compositions and acetylcholinesterase (AChE) inhibitory activitiy of the volatile oil from the bark of Peltophorum dasyrachis Kurz ex Bakar (yellow batai) were evaluated. As a result, 68 compounds, accounting for 88.0% of the total oil, were identified. The main characteristic constituent in P. dasyrachis was isolated by silica gel column chromatography and found to be a sesquiterpenoid, (+)-(S)-ar-turmerone (1). In the AChE inhibitory assay, the volatile oil showed potent inhibitory activity with the IC(50) value of 83.2 +/- 2.8 microg/mL. Among the volatile oil components and characteristic sesquiterpenoids, (+)-(S)-ar-turmerone (1) and (+)-(S)-dihydro-ar-turmerone (2) were potent compounds, inhibiting AChE in a dose-dependent manner, with IC(50) values of 191.1 +/- 0.3 and 81.5 +/- 0.2 microM, respectively. (+)-(S)-Dihydro-ar-turmerone (2), in particular, was found to be the most potent AChE inhibitor. Also, bisabolane-type sesquiterpenoid derivatives, (+)-(7S,9S)-ar-turmerol (3), (+)-(7S,9R)-ar-turmerol (4), (+)-(7S,9S)-dihydro-ar-turmerol (5), (+)-(7S,9R)-dihydro-ar-turmerol (6), (+)-(S)-ar-curcumene (7), and (+)-(S)-dihydro-ar-curcumene (8), were synthesized and tested for their AChE inhibitory effect, and their structure-activity relationships were evaluated. All sesquiterpenoids exhibited AChE inhibitory activity. The order of AChE inhibitory potency by bisabolane-type sesquiterpenoids was as follows: ketones > alcohols > hydrocarbons. Furthermore, the inhibition kinetics analyzed by Dixon plots indicated that (+)-(S)-ar-turmerone (1) is a competitive inhibitor, with a K(i) value of 882.1 +/- 2.1 microM, whereas (+)-(S)-dihydro-ar-turmerone (2) is a non-competitive inhibitor.
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Affiliation(s)
- Mai Fujiwara
- Department of Applied Chemistry, Faculty of Science of Engineering, Kinki University, 3-4-1, Kowakae, Higashiosaka-shi, Osaka 577-8502, Japan
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Landa A, Puente Á, Santos JI, Vera S, Oiarbide M, Palomo C. Catalytic Conjugate Additions of Geminal Bis(sulfone)s: Expanding the Chemistry of Sulfones as Simple Alkyl Anion Equivalents. Chemistry 2009; 15:11954-62. [DOI: 10.1002/chem.200902094] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Marcoux D, Goudreau SR, Charette AB. trans-Directing Ability of the Amide Group: Enabling the Enantiocontrol in the Synthesis of 1,1-Dicarboxy Cyclopropanes. Reaction Development, Scope, and Synthetic Applications. J Org Chem 2009; 74:8939-55. [DOI: 10.1021/jo902066y] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- David Marcoux
- Département de Chimie, Université de Montréal, P.O. Box 6128, Station Downtown, Montréal (Québec), Canada H3C 3J7
| | - Sébastien R. Goudreau
- Département de Chimie, Université de Montréal, P.O. Box 6128, Station Downtown, Montréal (Québec), Canada H3C 3J7
| | - André B. Charette
- Département de Chimie, Université de Montréal, P.O. Box 6128, Station Downtown, Montréal (Québec), Canada H3C 3J7
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Fernández-Álvaro E, Kourist R, Winter J, Böttcher D, Liebeton K, Naumer C, Eck J, Leggewie C, Jaeger KE, Streit W, Bornscheuer UT. Enantioselective kinetic resolution of phenylalkyl carboxylic acids using metagenome-derived esterases. Microb Biotechnol 2009; 3:59-64. [PMID: 21255306 PMCID: PMC3815947 DOI: 10.1111/j.1751-7915.2009.00141.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Enantiomerically pure β-arylalkyl carboxylic acids are important synthetic intermediates for the preparation of a wide range of compounds with biological and pharmacological activities. A library of 83 enzymes isolated from the metagenome was searched for activity in the hydrolysis of ethyl esters of three racemic phenylalkyl carboxylic acids by a microtiter plate-based screening using a pH-indicator assay. Out of these, 20 enzymes were found to be active and were subjected to analytical scale biocatalysis in order to determine their enantioselectivity. The most enantioselective and also enantiocomplementary biocatalysts were then used for preparative scale reactions. Thus, both enantiomers of each of the three phenylalkyl carboxylic acids studied could be obtained in excellent optical purity and high yields.
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Affiliation(s)
- Elena Fernández-Álvaro
- Dept. of Biotechnology and Enzyme Catalysis, Institute of Biochemistry, Greifswald University, Felix-Hausdorff-Str. 4, D-17487 Greifswald, Germany
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Kamal A, Shaheer Malik M, Azeeza S, Bajee S, Shaik AA. Total synthesis of (R)- and (S)-turmerone and (7S,9R)-bisacumol by an efficient chemoenzymatic approach. ACTA ACUST UNITED AC 2009; 20:1267-71. [DOI: 10.1016/j.tetasy.2009.05.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Kamal A, Malik MS, Shaik AA, Azeeza S. Lipase mediated resolution of γ-azidoalcohols in aqueous and organic media: Synthesis of (R)- and (S)-fluoxetine and duloxetine. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.molcatb.2008.12.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Kamal A, Malik MS, Shaik AA, Azeeza S. Synthesis of enantiomerically pure γ-azidoalcohols by lipase-catalyzed transesterification. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.tetasy.2008.03.028] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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