101
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Dong Y, Yang J, He S, Shi ZC, Wang Y, Zhang XM, Wang JY. Metal-free oxidative cross-dehydrogenative coupling of quinones with benzylic C(sp3)–H bonds. RSC Adv 2019; 9:27588-27592. [PMID: 35529195 PMCID: PMC9070767 DOI: 10.1039/c9ra05678e] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 08/28/2019] [Indexed: 12/23/2022] Open
Abstract
A metal-free cross-dehydrogenative coupling of quinones with toluene derivatives has been established. A series of quinones were subjected to reaction with toluene derivatives in the presence of di-tertbutyl peroxide (DTBP) for direct synthesis of benzylquinones. The method exhibits good functional group tolerance, and desired products were obtained in moderate to good yields. Meanwhile, a radical pathway was proposed to describe the cross-dehydrogenative coupling of quinones with toluene derivatives. A metal-free cross-dehydrogenative coupling of quinones with toluene derivatives has been established. A series of quinones were subjected to reaction with toluene derivatives in the presence of DTBP for direct synthesis of benzylquinones.![]()
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Affiliation(s)
- Yu Dong
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu 610041
- P. R. China
- University of Chinese Academy of Sciences
| | - Jian Yang
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu 610041
- P. R. China
- University of Chinese Academy of Sciences
| | - Shuai He
- Southwest Minzu University
- Chengdu 610041
- P. R. China
| | | | - Yu Wang
- Guizhou Education University
- Guiyang 550018
- P. R. China
| | - Xiao-Mei Zhang
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu 610041
- P. R. China
| | - Ji-Yu Wang
- Chengdu Institute of Organic Chemistry
- Chinese Academy of Sciences
- Chengdu 610041
- P. R. China
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102
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Gilardoni G, Ramírez J, Montalván M, Quinche W, León J, Benítez L, Morocho V, Cumbicus N, Bicchi C. Phytochemistry of Three Ecuadorian Lamiaceae: Lepechinia heteromorpha (Briq.) Epling, Lepechinia radula (Benth.) Epling and Lepechinia paniculata (Kunth) Epling. PLANTS (BASEL, SWITZERLAND) 2018; 8:E1. [PMID: 30577466 PMCID: PMC6358884 DOI: 10.3390/plants8010001] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 12/11/2018] [Accepted: 12/15/2018] [Indexed: 12/20/2022]
Abstract
In this research, the leaves of Lepechinia heteromorpha (Briq.) Epling, Lepechinia radula (Benth.) Epling and Lepechinia paniculata (Kunth) Epling have been collected in order to perform a phytochemical study. The first species was distilled to obtain a novel essential oil (EO), while the others were submitted to ethyl acetate extraction and secondary metabolite isolation. The chemical composition of the EO from L. heteromorpha has been investigated by Gas Chromatography-Mass Spectrometry (GC-MS) and Gas Chromatography with Retention Indices (GC(RI)), identifying 25 constituents. A major compound, (-)-ledol (21.2%), and a minor compound, (-)-caryophyllene oxide (1.0%), were isolated from the EO and their structures confirmed by Nuclear Magnetic Resonance (NMR) spectroscopy. Other major constituents of the EO were viridiflorene (27.3%), (E,E)-α-farnesene (1.4%), spirolepechinene and (E)-β-caryophyllene (7.1% each), allo-aromadendrene (6.1%), camphor (1.7%), limonene (1.3%) and β-phellandrene (4.6%). The enantiomeric composition of the EO monoterpene fraction was also studied, determining the enantiomeric excess and distribution of α-pinene, limonene, β-phellandrene and camphor. The ethyl acetate extract of L. radula and L. paniculata were fractionated by column chromatography. Spathulenol, angustanoic acid E and 5-hydroxy-4',7-dimethoxy flavone were isolated from L. radula extract; ledol, guaiol and (-)-carnosol were found in L. paniculata.
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Affiliation(s)
- Gianluca Gilardoni
- Departamento de Química y Ciencias Exactas, Universidad Técnica Particular de Loja (UTPL), Calle M. Champagnat s/n, 1101608 Loja, Ecuador.
| | - Jorge Ramírez
- Departamento de Química y Ciencias Exactas, Universidad Técnica Particular de Loja (UTPL), Calle M. Champagnat s/n, 1101608 Loja, Ecuador.
| | - Mayra Montalván
- Departamento de Química y Ciencias Exactas, Universidad Técnica Particular de Loja (UTPL), Calle M. Champagnat s/n, 1101608 Loja, Ecuador.
| | - Willan Quinche
- Departamento de Química y Ciencias Exactas, Universidad Técnica Particular de Loja (UTPL), Calle M. Champagnat s/n, 1101608 Loja, Ecuador.
| | - Jackeline León
- Departamento de Química y Ciencias Exactas, Universidad Técnica Particular de Loja (UTPL), Calle M. Champagnat s/n, 1101608 Loja, Ecuador.
| | - Lita Benítez
- Departamento de Química y Ciencias Exactas, Universidad Técnica Particular de Loja (UTPL), Calle M. Champagnat s/n, 1101608 Loja, Ecuador.
| | - Vladimir Morocho
- Departamento de Química y Ciencias Exactas, Universidad Técnica Particular de Loja (UTPL), Calle M. Champagnat s/n, 1101608 Loja, Ecuador.
| | - Nixon Cumbicus
- Departamento de Química y Ciencias Exactas, Universidad Técnica Particular de Loja (UTPL), Calle M. Champagnat s/n, 1101608 Loja, Ecuador.
| | - Carlo Bicchi
- Dipartimento di Scienza e Tecnologia del Farmaco, Università degli Studi di Torino, Via P. Giuria 9, 10125 Torino, Italy.
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103
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Guo J, Zhang R, Ouyang J, Zhang F, Qin F, Liu G, Zhang W, Li H, Ji X, Jia X, Qin B, You S. Stereodivergent Synthesis of Carveol and Dihydrocarveol through Ketoreductases/Ene‐Reductases Catalyzed Asymmetric Reduction. ChemCatChem 2018. [DOI: 10.1002/cctc.201801391] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Jiyang Guo
- School of Life Sciences and Biopharmaceutical SciencesShenyang Pharmaceutical University 103 Wenhua Road, Shenhe District Shenyang 110016 P.R. China
| | - Rui Zhang
- Wuya College of InnovationShenyang Pharmaceutical University 103 Wenhua Road, Shenhe District Shenyang 110016 P.R. China
| | - Jingping Ouyang
- School of Pharmaceutical EngineeringShenyang Pharmaceutical University 103 Wenhua Road, Shenhe District Shenyang 110016 P.R. China
| | - Feiting Zhang
- School of Life Sciences and Biopharmaceutical SciencesShenyang Pharmaceutical University 103 Wenhua Road, Shenhe District Shenyang 110016 P.R. China
| | - Fengyu Qin
- School of Life Sciences and Biopharmaceutical SciencesShenyang Pharmaceutical University 103 Wenhua Road, Shenhe District Shenyang 110016 P.R. China
| | - Guigao Liu
- Wuya College of InnovationShenyang Pharmaceutical University 103 Wenhua Road, Shenhe District Shenyang 110016 P.R. China
| | - Wenhe Zhang
- School of Life Sciences and Biopharmaceutical SciencesShenyang Pharmaceutical University 103 Wenhua Road, Shenhe District Shenyang 110016 P.R. China
| | - Hengyu Li
- School of Life Sciences and Biopharmaceutical SciencesShenyang Pharmaceutical University 103 Wenhua Road, Shenhe District Shenyang 110016 P.R. China
| | - Xiaohong Ji
- Wuya College of InnovationShenyang Pharmaceutical University 103 Wenhua Road, Shenhe District Shenyang 110016 P.R. China
| | - Xian Jia
- School of Pharmaceutical EngineeringShenyang Pharmaceutical University 103 Wenhua Road, Shenhe District Shenyang 110016 P.R. China
| | - Bin Qin
- Wuya College of InnovationShenyang Pharmaceutical University 103 Wenhua Road, Shenhe District Shenyang 110016 P.R. China
| | - Song You
- School of Life Sciences and Biopharmaceutical SciencesShenyang Pharmaceutical University 103 Wenhua Road, Shenhe District Shenyang 110016 P.R. China
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104
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Molecular dynamics study of racemic mixtures: Solutions of ibuprofen and β-cyclodextrin in methanol. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.07.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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105
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Kitamura K, Itoh H, Sakurai K, Dan S, Inoue M. Target Identification of Yaku’amide B and Its Two Distinct Activities against Mitochondrial FoF1-ATP Synthase. J Am Chem Soc 2018; 140:12189-12199. [DOI: 10.1021/jacs.8b07339] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Kai Kitamura
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hiroaki Itoh
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kaori Sakurai
- Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei-shi, Tokyo 184-8588, Japan
| | - Shingo Dan
- Division of Molecular Pharmacology, Cancer Chemotherapy Center, Japanese Foundation for Cancer Research, 3-10-6 Ariake, Koto-ku, Tokyo 135-8550, Japan
| | - Masayuki Inoue
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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106
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Tiritan ME, Fernandes C, Maia AS, Pinto M, Cass QB. Enantiomeric ratios: Why so many notations? J Chromatogr A 2018; 1569:1-7. [PMID: 30025608 DOI: 10.1016/j.chroma.2018.07.039] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 07/05/2018] [Accepted: 07/09/2018] [Indexed: 12/16/2022]
Abstract
The correct quantification of enantiomers is pivotal in a variety of fields, such as pharmacokinetic studies, enantioselective syntheses, chemical characterization of natural products, authentication of fragrance and food, biodegradation behavior, accurate evaluation of environmental risk, and it can also provide information for sentencing guidance in forensic field. Enantioselective chromatography is the first choice to assess the composition of an enantiomeric mixture. Different notations have been used to express the measured enantiomeric ratios, which compromise the results and represent a challenge for data comparison. This manuscript critically discusses the currently used notations and exemplifies with applications in different fields indicating the advantages and disadvantages of one of the adopted systems. In order to simplify the notations, the use of enantiomeric ratio (e.r.%) as standardization for nonchiroptical methods is proposed.
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Affiliation(s)
- Maria E Tiritan
- CESPU, Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde (IINFACTS), Rua Central de Gandra, 1317, 4585-116, Gandra PRD, Portugal; Laboratório de Química Orgânica e Farmacêutica, Departamento de Ciências Químicas, Faculdade de Farmácia da Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal; Centro Interdisciplinar de Investigação Marinha e Ambiental (CIIMAR), Edifício do Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4050-208, Matosinhos, Portugal
| | - Carla Fernandes
- Laboratório de Química Orgânica e Farmacêutica, Departamento de Ciências Químicas, Faculdade de Farmácia da Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal; Centro Interdisciplinar de Investigação Marinha e Ambiental (CIIMAR), Edifício do Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4050-208, Matosinhos, Portugal
| | - Alexandra S Maia
- CESPU, Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde (IINFACTS), Rua Central de Gandra, 1317, 4585-116, Gandra PRD, Portugal
| | - Madalena Pinto
- Laboratório de Química Orgânica e Farmacêutica, Departamento de Ciências Químicas, Faculdade de Farmácia da Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal; Centro Interdisciplinar de Investigação Marinha e Ambiental (CIIMAR), Edifício do Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4050-208, Matosinhos, Portugal
| | - Quezia B Cass
- SEPARARE, Departamento de Química, Universidade Federal de São Carlos, Rodovia Washington Luiz, km 235, São Carlos, 13565-905, SP, Brazil.
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107
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Wakamiya Y, Ebine M, Murayama M, Omizu H, Matsumori N, Murata M, Oishi T. Synthesis and Stereochemical Revision of the C31–C67 Fragment of Amphidinol 3. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201712167] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Yuma Wakamiya
- Department of Chemistry, Faculty and Graduate School of Science Kyushu University 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
| | - Makoto Ebine
- Department of Chemistry, Faculty and Graduate School of Science Kyushu University 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
| | - Mariko Murayama
- Department of Chemistry, Faculty and Graduate School of Science Kyushu University 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
| | - Hiroyuki Omizu
- Department of Chemistry, Faculty and Graduate School of Science Kyushu University 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
| | - Nobuaki Matsumori
- Department of Chemistry, Faculty and Graduate School of Science Kyushu University 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
| | - Michio Murata
- Department of Chemistry Graduate School of Science Osaka University 1-1 Machikeneyama, Toyonaka Osaka 560-0043 Japan
| | - Tohru Oishi
- Department of Chemistry, Faculty and Graduate School of Science Kyushu University 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
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108
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Wakamiya Y, Ebine M, Murayama M, Omizu H, Matsumori N, Murata M, Oishi T. Synthesis and Stereochemical Revision of the C31–C67 Fragment of Amphidinol 3. Angew Chem Int Ed Engl 2018; 57:6060-6064. [DOI: 10.1002/anie.201712167] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 03/04/2018] [Indexed: 12/22/2022]
Affiliation(s)
- Yuma Wakamiya
- Department of Chemistry, Faculty and Graduate School of Science Kyushu University 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
| | - Makoto Ebine
- Department of Chemistry, Faculty and Graduate School of Science Kyushu University 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
| | - Mariko Murayama
- Department of Chemistry, Faculty and Graduate School of Science Kyushu University 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
| | - Hiroyuki Omizu
- Department of Chemistry, Faculty and Graduate School of Science Kyushu University 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
| | - Nobuaki Matsumori
- Department of Chemistry, Faculty and Graduate School of Science Kyushu University 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
| | - Michio Murata
- Department of Chemistry Graduate School of Science Osaka University 1-1 Machikeneyama, Toyonaka Osaka 560-0043 Japan
| | - Tohru Oishi
- Department of Chemistry, Faculty and Graduate School of Science Kyushu University 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
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109
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Evanno L, Lachkar D, Lamali A, Boufridi A, Séon-Méniel B, Tintillier F, Saulnier D, Denis S, Genta-Jouve G, Jullian JC, Leblanc K, Beniddir MA, Petek S, Debitus C, Poupon E. A Ring-Distortion Strategy from Marine Natural Product Ilimaquinone Leads to Quorum Sensing Modulators. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800047] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Laurent Evanno
- BioCIS; Université Paris-Sud; Université Paris-Saclay; 92290 Châtenay-Malabry France
| | - David Lachkar
- BioCIS; Université Paris-Sud; Université Paris-Saclay; 92290 Châtenay-Malabry France
| | - Assia Lamali
- BioCIS; Université Paris-Sud; Université Paris-Saclay; 92290 Châtenay-Malabry France
| | - Asmaa Boufridi
- BioCIS; Université Paris-Sud; Université Paris-Saclay; 92290 Châtenay-Malabry France
| | - Blandine Séon-Méniel
- BioCIS; Université Paris-Sud; Université Paris-Saclay; 92290 Châtenay-Malabry France
| | - Florent Tintillier
- EIO; UPF-IRD-Ifremer; Institut Louis Malardé; BP529 98713 Papeete Tahiti Polynésie française
| | - Denis Saulnier
- EIO; IRD-UPF-Ifremer; Institut Louis Malardé; BP 49 98719 Taravao Tahiti Polynésie française
| | - Stéphanie Denis
- BioCIS; Université Paris-Sud; Université Paris-Saclay; 92290 Châtenay-Malabry France
| | - Grégory Genta-Jouve
- Dr Grégory Genta-Jouve; Laboratoire de Chimie-Toxicologie Analytique et Cellulaire (C-TAC); Université Paris Descartes; 4 Avenue de l'observatoire 75006 Paris France
| | | | - Karine Leblanc
- BioCIS; Université Paris-Sud; Université Paris-Saclay; 92290 Châtenay-Malabry France
| | - Mehdi A. Beniddir
- BioCIS; Université Paris-Sud; Université Paris-Saclay; 92290 Châtenay-Malabry France
| | - Sylvain Petek
- LEMAR; IRD-UBO-CNRS-IFREMER; IUEM; rue Dumont d'Urville 29280 Plouzané France
| | - Cécile Debitus
- LEMAR; IRD-UBO-CNRS-IFREMER; IUEM; rue Dumont d'Urville 29280 Plouzané France
| | - Erwan Poupon
- BioCIS; Université Paris-Sud; Université Paris-Saclay; 92290 Châtenay-Malabry France
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110
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Knight A, Kan SBJ, Lewis RD, Brandenberg OF, Chen K, Arnold FH. Diverse Engineered Heme Proteins Enable Stereodivergent Cyclopropanation of Unactivated Alkenes. ACS CENTRAL SCIENCE 2018; 4:372-377. [PMID: 29632883 PMCID: PMC5879470 DOI: 10.1021/acscentsci.7b00548] [Citation(s) in RCA: 97] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Indexed: 05/04/2023]
Abstract
Developing catalysts that produce each stereoisomer of a desired product selectively is a longstanding synthetic challenge. Biochemists have addressed this challenge by screening nature's diversity to discover enzymes that catalyze the formation of complementary stereoisomers. We show here that the same approach can be applied to a new-to-nature enzymatic reaction, alkene cyclopropanation via carbene transfer. By screening diverse native and engineered heme proteins, we identified globins and serine-ligated "P411" variants of cytochromes P450 with promiscuous activity for cyclopropanation of unactivated alkene substrates. We then enhanced their activities and stereoselectivities by directed evolution: just 1-3 rounds of site-saturation mutagenesis and screening generated enzymes that transform unactivated alkenes and electron-deficient alkenes into each of the four stereoisomeric cyclopropanes with up to 5,400 total turnovers and 98% enantiomeric excess. These fully genetically encoded biocatalysts function in whole Escherichia coli cells in mild, aqueous conditions and provide the first example of enantioselective, intermolecular iron-catalyzed cyclopropanation of unactivated alkenes.
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Affiliation(s)
- Anders
M. Knight
- Division
of Biology and Bioengineering and Division of Chemistry and Chemical
Engineering, California Institute of Technology, 1200 East California Boulevard, MC 210-41, Pasadena, California 91125, United States
| | - S. B. Jennifer Kan
- Division
of Biology and Bioengineering and Division of Chemistry and Chemical
Engineering, California Institute of Technology, 1200 East California Boulevard, MC 210-41, Pasadena, California 91125, United States
| | - Russell D. Lewis
- Division
of Biology and Bioengineering and Division of Chemistry and Chemical
Engineering, California Institute of Technology, 1200 East California Boulevard, MC 210-41, Pasadena, California 91125, United States
| | - Oliver F. Brandenberg
- Division
of Biology and Bioengineering and Division of Chemistry and Chemical
Engineering, California Institute of Technology, 1200 East California Boulevard, MC 210-41, Pasadena, California 91125, United States
| | - Kai Chen
- Division
of Biology and Bioengineering and Division of Chemistry and Chemical
Engineering, California Institute of Technology, 1200 East California Boulevard, MC 210-41, Pasadena, California 91125, United States
| | - Frances H. Arnold
- Division
of Biology and Bioengineering and Division of Chemistry and Chemical
Engineering, California Institute of Technology, 1200 East California Boulevard, MC 210-41, Pasadena, California 91125, United States
- E-mail:
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111
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Mazzoccanti G, Ismail OH, D'Acquarica I, Villani C, Manzo C, Wilcox M, Cavazzini A, Gasparrini F. Cannabis through the looking glass: chemo- and enantio-selective separation of phytocannabinoids by enantioselective ultra high performance supercritical fluid chromatography. Chem Commun (Camb) 2018; 53:12262-12265. [PMID: 29072720 DOI: 10.1039/c7cc06999e] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
By using the Inverted Chirality Columns Approach (ICCA) we have developed an enantioselective UHPSFC method to determine the enantiomeric excess (ee) of (-)-Δ9-THC in medicinal marijuana (Bedrocan®). The ee was high (99.73%), but the concentration of the (+)-enantiomer (0.135%) was not negligible, and it is worth a systematic evaluation of bioactivity.
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Affiliation(s)
- G Mazzoccanti
- Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, p.le A. Moro 5, 00185 Roma, Italy.
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112
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N L Batista A, M Dos Santos F, Batista JM, Cass QB. Enantiomeric Mixtures in Natural Product Chemistry: Separation and Absolute Configuration Assignment. Molecules 2018; 23:molecules23020492. [PMID: 29473869 PMCID: PMC6017502 DOI: 10.3390/molecules23020492] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 01/23/2018] [Accepted: 02/21/2018] [Indexed: 01/13/2023] Open
Abstract
Chiral natural product molecules are generally assumed to be biosynthesized in an enantiomerically pure or enriched fashion. Nevertheless, a significant amount of racemates or enantiomerically enriched mixtures has been reported from natural sources. This number is estimated to be even larger since the enantiomeric purity of secondary metabolites is rarely checked in the natural product isolation pipeline. This latter fact may have drastic effects on the evaluation of the biological activity of chiral natural products. A second bottleneck is the determination of their absolute configurations. Despite the widespread use of optical rotation and electronic circular dichroism, most of the stereochemical assignments are based on empirical correlations with similar compounds reported in the literature. As an alternative, the combination of vibrational circular dichroism and quantum chemical calculations has emerged as a powerful and reliable tool for both conformational and configurational analysis of natural products, even for those lacking UV-Vis chromophores. In this review, we aim to provide the reader with a critical overview of the occurrence of enantiomeric mixtures of secondary metabolites in nature as well the best practices for their detection, enantioselective separation using liquid chromatography, and determination of absolute configuration by means of vibrational circular dichroism and density functional theory calculations.
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Affiliation(s)
- Andrea N L Batista
- Department of Chemistry, Federal University of São Carlos-UFSCar, Rod. Washington Luis s/n, km 235, São Carlos, SP 13565-905, Brazil.
| | - Fernando M Dos Santos
- Department of Chemistry, Federal University of São Carlos-UFSCar, Rod. Washington Luis s/n, km 235, São Carlos, SP 13565-905, Brazil.
| | - João M Batista
- Department of Chemistry, Federal University of São Carlos-UFSCar, Rod. Washington Luis s/n, km 235, São Carlos, SP 13565-905, Brazil.
- Institute of Science and Technology, Federal University of São Paulo-UNIFESP, R. Talim 330, São José dos Campos, SP 12231-280, Brazil.
| | - Quezia B Cass
- Department of Chemistry, Federal University of São Carlos-UFSCar, Rod. Washington Luis s/n, km 235, São Carlos, SP 13565-905, Brazil.
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113
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Song M, Fuentes C, Loos A, Tomasino E. Free Monoterpene Isomer Profiles of Vitis Vinifera L. cv. White Wines. Foods 2018; 7:foods7020027. [PMID: 29466286 PMCID: PMC5848131 DOI: 10.3390/foods7020027] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Revised: 02/13/2018] [Accepted: 02/17/2018] [Indexed: 11/16/2022] Open
Abstract
Monoterpene compounds contribute floral and fruity characters to wine and are desired by grape growers and winemakers for many white wines. However, monoterpene isomers, especially monoterpene enantiomers, have been little explored. It is possible to identify and quantitate 17 monoterpene isomers in 148 varietal wines from eight grape varieties; Chardonnay, Gewürztraminer, Muscat, Pinot gris, Riesling, Sauvignon blanc, Torrontes, and Viognier in two vintages by Headspace solidphase microextraction multidimensional gas chromatography mass spectrometry (HS-SPME-MDGC-MS). Results obtained from general linear models and discriminant analysis showed significant differences for the isomer profiles and enantiomer fractions among the eight grape varieties and four wine styles. The high R2 values from the fitted line show low variation in enantiomeric differences based on variety. These results provide an overview of the monoterpene isomers of wide varietal wines, and support that isomer profiles and enantiomer fractions could differentiate our wines by varietal and wine style.
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Affiliation(s)
- Mei Song
- Department of Food Science & Technology, Oregon State University, Corvallis, OR 97331, USA.
| | - Claudio Fuentes
- Department of Statistics, Oregon State University, Corvallis, OR 97331, USA.
| | - Athena Loos
- Department of Food Science & Technology, Oregon State University, Corvallis, OR 97331, USA.
| | - Elizabeth Tomasino
- Department of Food Science & Technology, Oregon State University, Corvallis, OR 97331, USA.
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Hughes JM, Gleason JL. A bio-inspired cascade and a late-stage directed sp3 C H lithiation enables a concise total synthesis of (−)-virosaine A. Tetrahedron 2018. [DOI: 10.1016/j.tet.2017.12.026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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115
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Fujita S, Nishikawa K, Iwata T, Tomiyama T, Ikenaga H, Matsumoto K, Shindo M. Asymmetric Total Synthesis of (−)-Stemonamine and Its Stereochemical Stability. Chemistry 2018; 24:1539-1543. [DOI: 10.1002/chem.201706057] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Indexed: 11/07/2022]
Affiliation(s)
- Satoshi Fujita
- Interdisciplinary Graduate School of Engineering Sciences; Kyushu University, Kasuga-koen; Kasuga 816-8580 Japan
| | - Keisuke Nishikawa
- Institute for Materials Chemistry and Engineering; Kyushu University, Kasuga-koen; Kasuga 816-8580 Japan
| | - Takayuki Iwata
- Institute for Materials Chemistry and Engineering; Kyushu University, Kasuga-koen; Kasuga 816-8580 Japan
| | - Taishi Tomiyama
- Interdisciplinary Graduate School of Engineering Sciences; Kyushu University, Kasuga-koen; Kasuga 816-8580 Japan
| | - Hiroshi Ikenaga
- Interdisciplinary Graduate School of Engineering Sciences; Kyushu University, Kasuga-koen; Kasuga 816-8580 Japan
| | - Kenji Matsumoto
- Institute for Materials Chemistry and Engineering; Kyushu University, Kasuga-koen; Kasuga 816-8580 Japan
| | - Mitsuru Shindo
- Institute for Materials Chemistry and Engineering; Kyushu University, Kasuga-koen; Kasuga 816-8580 Japan
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Schmiedel VM, Hong YJ, Lentz D, Tantillo DJ, Christmann M. Synthesis and Structure Revision of Dichrocephones A and B. Angew Chem Int Ed Engl 2018; 57:2419-2422. [DOI: 10.1002/anie.201711766] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Indexed: 11/12/2022]
Affiliation(s)
- Volker M. Schmiedel
- Freie Universität Berlin; Institute of Chemistry and Biochemistry; Takustr. 3 14195 Berlin Germany
| | - Young J. Hong
- Department of Chemistry; University of California, Davis; One Shields Avenue Davis CA 95616 USA
| | - Dieter Lentz
- Freie Universität Berlin; Institute of Chemistry and Biochemistry; Takustr. 3 14195 Berlin Germany
| | - Dean J. Tantillo
- Department of Chemistry; University of California, Davis; One Shields Avenue Davis CA 95616 USA
| | - Mathias Christmann
- Freie Universität Berlin; Institute of Chemistry and Biochemistry; Takustr. 3 14195 Berlin Germany
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117
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Schmiedel VM, Hong YJ, Lentz D, Tantillo DJ, Christmann M. Synthesis and Structure Revision of Dichrocephones A and B. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201711766] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Volker M. Schmiedel
- Freie Universität Berlin; Institute of Chemistry and Biochemistry; Takustr. 3 14195 Berlin Germany
| | - Young J. Hong
- Department of Chemistry; University of California, Davis; One Shields Avenue Davis CA 95616 USA
| | - Dieter Lentz
- Freie Universität Berlin; Institute of Chemistry and Biochemistry; Takustr. 3 14195 Berlin Germany
| | - Dean J. Tantillo
- Department of Chemistry; University of California, Davis; One Shields Avenue Davis CA 95616 USA
| | - Mathias Christmann
- Freie Universität Berlin; Institute of Chemistry and Biochemistry; Takustr. 3 14195 Berlin Germany
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118
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Norcott P, McErlean CSP. Synthesis of Highly Enantio-Enriched Heliespirones A and C by a Diastereoselective Aromatic Claisen Rearrangement. Aust J Chem 2018. [DOI: 10.1071/ch18019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Computational methods were used to investigate the stereochemical course of the extra-annular Claisen rearrangement. The stereochemical fidelity of the synthetic strategy and comparison of the optical properties support the hypothesis that the heliespirones are scalemic natural products.
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119
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Chong KW, Yeap JSY, Lim SH, Weber JFF, Low YY, Kam TS. Biosynthetic Enantiodivergence in the Eburnane Alkaloids from Kopsia. JOURNAL OF NATURAL PRODUCTS 2017; 80:3014-3024. [PMID: 29087707 DOI: 10.1021/acs.jnatprod.7b00621] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Reexamination of the absolute configuration of recently isolated eburnane alkaloids from Malaysian Kopsia and Leuconotis species by X-ray diffraction analysis and ECD/TDDFT has revealed the existence of biosynthetic enantiodivergence. Three different scenarios are discerned with respect to the composition of the enantiomeric eburnane alkaloids in these plants: first, where the new eburnane congeners possess the same C-20, C-21 absolute configurations as the common eburnane alkaloids (eburnamonine, eburnamine, isoeburnamine, eburnamenine) occurring in the same plant; second, where the new eburnane congeners possess opposite or enantiomeric C-20, C-21 absolute configurations compared to the common eburnane alkaloids found in the same plant; and, third, where the four common eburnane alkaloids were isolated as racemic or scalemic mixtures, while the new eburnane congeners were isolated as pure enantiomers with a common C-20, C-21 configuration (20α, 21α). Additionally, the same Kopsia species (K. pauciflora) found in two different geographical locations (Peninsular Malaysia and Malaysian Borneo) showed different patterns in the composition of the enantiomeric eburnane alkaloids. Revision of the absolute configurations of a number of new eburnane congeners (previously assigned based on the assumption of a common biogenetic origin to that of the known eburnane alkaloids co-occurring in the same plant) is required based on the present results.
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Affiliation(s)
- Kam-Weng Chong
- Department of Chemistry, Faculty of Science, University of Malaya , 50603 Kuala Lumpur, Malaysia
| | - Joanne Soon-Yee Yeap
- Department of Chemistry, Faculty of Science, University of Malaya , 50603 Kuala Lumpur, Malaysia
| | - Siew-Huah Lim
- Department of Chemistry, Faculty of Science, University of Malaya , 50603 Kuala Lumpur, Malaysia
| | - Jean-Frédéric F Weber
- Atta-ur-Rahman Institute for Natural Product Discovery and Faculty of Pharmacy, Universiti Technologi MARA (UiTM, Selangor Branch), Puncak Alam Campus , 42300 Bandar Puncak Alam, Selangor, Malaysia
| | - Yun-Yee Low
- Department of Chemistry, Faculty of Science, University of Malaya , 50603 Kuala Lumpur, Malaysia
| | - Toh-Seok Kam
- Department of Chemistry, Faculty of Science, University of Malaya , 50603 Kuala Lumpur, Malaysia
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Green Routes for the Production of Enantiopure Benzylisoquinoline Alkaloids. Int J Mol Sci 2017; 18:ijms18112464. [PMID: 29156609 PMCID: PMC5713430 DOI: 10.3390/ijms18112464] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 11/14/2017] [Accepted: 11/16/2017] [Indexed: 12/20/2022] Open
Abstract
Benzylisoquinoline alkaloids (BIAs) are among the most important plant secondary metabolites, in that they include a number of biologically active substances widely employed as pharmaceuticals. Isolation of BIAs from their natural sources is an expensive and time-consuming procedure as they accumulate in very low levels in plant. Moreover, total synthesis is challenging due to the presence of stereogenic centers. In view of these considerations, green and scalable methods for BIA synthesis using fully enzymatic approaches are getting more and more attention. The aim of this paper is to review fully enzymatic strategies for producing the benzylisoquinoline central precursor, (S)-norcoclaurine and its derivatives. Specifically, we will detail the current status of synthesis of BIAs in microbial hosts as well as using isolated and recombinant enzymes.
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121
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Zask A, Ellestad G. Biomimetic syntheses of racemic natural products. Chirality 2017; 30:157-164. [DOI: 10.1002/chir.22786] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 08/31/2017] [Accepted: 09/26/2017] [Indexed: 12/20/2022]
Affiliation(s)
- Arie Zask
- Department of Biological Sciences; Columbia University; New York New York
| | - George Ellestad
- Department of Chemistry; Columbia University; New York New York
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122
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Pérard-Viret J, Quteishat L, Alsalim R, Royer J, Dumas F. Cephalotaxus Alkaloids. THE ALKALOIDS. CHEMISTRY AND BIOLOGY 2017; 78:205-352. [PMID: 28838429 PMCID: PMC7110560 DOI: 10.1016/bs.alkal.2017.07.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Cephalotaxus alkaloids represent a family of plant secondary metabolites known for 60 years. Significant activity against leukemia in mice was demonstrated for extracts of Cephalotaxus. Cephalotaxine (CET) (1), the major alkaloid of this series was isolated from Cephalotaxus drupacea species by Paudler in 1963. The subsequent discovery of promising antitumor activity among new Cephalotaxus derivatives reported by Chinese, Japanese, and American teams triggered extensive structure elucidation and biological studies in this family. The structural feature of this cephalotaxane family relies mainly on its tetracyclic alkaloid backbone, which comprises an azaspiranic 1-azaspiro[4.4]nonane unit (rings C and D) and a benzazepine ring system (rings A and B), which is linked by its C3 alcohol function to a chiral oxygenated side chain by a carboxylic function alpha to a tetrasubstituted carbon center. The botanical distribution of these alkaloids is limited to the Cephalotaxus genus (Cephalotaxaceae). The scope of biological activities of the Cephalotaxus alkaloids is mainly centered on the antileukemic activity of homoharringtonine (HHT) (2), which in particular demonstrated marked benefits in the treatment of orphan myeloid leukemia and was approved as soon as 2009 by European Medicine Agency and by US Food and Drug Administration in 2012. Its exact mechanism of action was partly elucidated and it was early recognized that HHT (2) inhibited protein synthesis at the level of the ribosome machinery. Interestingly, after a latency period of two decades, the topic of Cephalotaxus alkaloids reemerged as a prolific source of new natural structures. To date, more than 70 compounds have been identified and characterized. Synthetic studies also regained attention during the past two decades, and numerous methodologies were developed to access the first semisynthetic HHT (2) of high purity suitable for clinical studies, and then high grade enantiomerically pure CET (1), HHT (2), and analogs.
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Affiliation(s)
- Joëlle Pérard-Viret
- Université Paris Descartes, CNRS, Université Sorbonne Paris Cité, Paris, France
| | - Laith Quteishat
- Université Paris Sud, CNRS, Université Paris Saclay, Châtenay-Malabry, France
| | - Rana Alsalim
- Université Paris Sud, CNRS, Université Paris Saclay, Châtenay-Malabry, France
| | - Jacques Royer
- Université Paris Descartes, CNRS, Université Sorbonne Paris Cité, Paris, France
| | - Françoise Dumas
- Université Paris Sud, CNRS, Université Paris Saclay, Châtenay-Malabry, France
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123
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Pragadheesh VS, Chanotiya CS, Rastogi S, Shasany AK. Scent from Jasminum grandiflorum flowers: Investigation of the change in linalool enantiomers at various developmental stages using chemical and molecular methods. PHYTOCHEMISTRY 2017; 140:83-94. [PMID: 28463687 DOI: 10.1016/j.phytochem.2017.04.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 03/21/2017] [Accepted: 04/21/2017] [Indexed: 06/07/2023]
Abstract
Jasminum species are among the most preferred fresh cut flowers in India since ancient times. The plant produces small and fragrant flowers, which are of great demand in the preparation of fragrant garlands and also in perfume industries. Floral volatile of Jasminum grandiflorum L. (Family: Oleaceae) was extracted using solid-phase microextraction and analyzed in enantioselective gas chromatography. Chemical classes of identified volatiles revealed the presence of terpenoids, phenylpropanoids, and fatty acid derivatives. Marker constituent of flower volatiles, linalool was selected for analytical characterization on ethyl- and acetyl-β-cyclodextrin stationary phase. (R)-(-)-Linalool was found as major enantiomer in volatiles of floral buds whereas (S)-(+)-linalool predominated in the volatiles of matured flowers. Simultaneously, a quantitative real-time PCR was performed to find the gene expression of linalool synthase to investigate the mechanism of enantiomeric inversion. The emission pattern of (R)-(-)-linalool at different flower developmental stages was well correlated (P = 0.01) with the gene expression of the cloned linalool synthase from J. grandiflorum. We observed that the successive change in (R)- to (S)-linalool ratio from bud to mature flower was mainly due to the enantio- specific transformation and temporal decline of (R)-linalool producing gene in J. grandiflorum. This enantiomeric change also leads to the difference in flower aroma. Furthermore, this is probably the reason behind consumer's acceptance for jasmine buds rather than bloomed flowers in cut flower segments.
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Affiliation(s)
- V S Pragadheesh
- Laboratory of Aromatic Plants and Chiral Separation, Chemical Sciences Division, CSIR-Central Institute of Medicinal and Aromatic Plants (CIMAP), Lucknow, 226 015, India; Academy of Scientific and Innovative Research, CSIR-Central Institute of Medicinal and Aromatic Plants (CIMAP), Lucknow, 226 015, India
| | - Chandan S Chanotiya
- Laboratory of Aromatic Plants and Chiral Separation, Chemical Sciences Division, CSIR-Central Institute of Medicinal and Aromatic Plants (CIMAP), Lucknow, 226 015, India; Academy of Scientific and Innovative Research, CSIR-Central Institute of Medicinal and Aromatic Plants (CIMAP), Lucknow, 226 015, India.
| | - Shubhra Rastogi
- Biotechnology Division, CSIR-Central Institute of Medicinal and Aromatic Plants (CIMAP), Lucknow, 226 015, India
| | - Ajit K Shasany
- Biotechnology Division, CSIR-Central Institute of Medicinal and Aromatic Plants (CIMAP), Lucknow, 226 015, India
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124
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Natural occurrence of all eight stereoisomers of a neosecurinane structure from Flueggea virosa. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.06.035] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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125
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Suo JJ, Ma ZY, Xu JY, Tian JL, Liu X. Preparation, characterization and biological evaluation of two chiral binuclear copper(II) complexes. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.3911] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Jing-Jing Suo
- Department of Chemistry; Nankai University; Tianjin 300071 P.R. China
- Key Laboratory of advanced Energy Materials Chemistry (MOE); Nankai University; Tianjin 300071 P.R. China
| | - Zhong-Ying Ma
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), School of Pharmacy; Tianjin Medical University; Tianjin 300070 China
| | - Jing-Yuan Xu
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics (Theranostics), School of Pharmacy; Tianjin Medical University; Tianjin 300070 China
| | - Jin-Lei Tian
- Department of Chemistry; Nankai University; Tianjin 300071 P.R. China
- Key Laboratory of advanced Energy Materials Chemistry (MOE); Nankai University; Tianjin 300071 P.R. China
| | - Xin Liu
- Department of Chemistry; Nankai University; Tianjin 300071 P.R. China
- Key Laboratory of advanced Energy Materials Chemistry (MOE); Nankai University; Tianjin 300071 P.R. China
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126
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Jiao WH, Hong LL, Sun JB, Piao SJ, Chen GD, Deng H, Wang SP, Yang F, Lin HW. (±)-Hippolide J - A Pair of Unusual Antifungal Enantiomeric Sesterterpenoids from the Marine Sponge Hippospongia lachne. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700248] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Wei-Hua Jiao
- Research Center for Marine Drugs; State Key Laboratory of Oncogenes and Related Genes; Department of Pharmacy; Ren Ji Hospital; School of Medicine; Shanghai Jiao Tong University; 200127 School of Medicine China
| | - Li-Li Hong
- Research Center for Marine Drugs; State Key Laboratory of Oncogenes and Related Genes; Department of Pharmacy; Ren Ji Hospital; School of Medicine; Shanghai Jiao Tong University; 200127 School of Medicine China
| | - Jia-Bao Sun
- Research Center for Marine Drugs; State Key Laboratory of Oncogenes and Related Genes; Department of Pharmacy; Ren Ji Hospital; School of Medicine; Shanghai Jiao Tong University; 200127 School of Medicine China
| | - Shu-Juan Piao
- Research Center for Marine Drugs; State Key Laboratory of Oncogenes and Related Genes; Department of Pharmacy; Ren Ji Hospital; School of Medicine; Shanghai Jiao Tong University; 200127 School of Medicine China
| | - Guo-Dong Chen
- Institute of Traditional Chinese Medicine and Natural Products; Jinan University; 510632 Guangzhou China
| | - Hai Deng
- Marine Biodiscovery Centre; Department of Chemistry; University of Aberdeen; AB24 3UE Aberdeen United Kingdom
| | - Shu-Ping Wang
- Research Center for Marine Drugs; State Key Laboratory of Oncogenes and Related Genes; Department of Pharmacy; Ren Ji Hospital; School of Medicine; Shanghai Jiao Tong University; 200127 School of Medicine China
| | - Fan Yang
- Research Center for Marine Drugs; State Key Laboratory of Oncogenes and Related Genes; Department of Pharmacy; Ren Ji Hospital; School of Medicine; Shanghai Jiao Tong University; 200127 School of Medicine China
| | - Hou-Wen Lin
- Research Center for Marine Drugs; State Key Laboratory of Oncogenes and Related Genes; Department of Pharmacy; Ren Ji Hospital; School of Medicine; Shanghai Jiao Tong University; 200127 School of Medicine China
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127
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Ambrož M, Matoušková P, Skarka A, Zajdlová M, Žáková K, Skálová L. The Effects of Selected Sesquiterpenes from Myrica rubra Essential Oil on the Efficacy of Doxorubicin in Sensitive and Resistant Cancer Cell Lines. Molecules 2017. [PMID: 28632185 PMCID: PMC6152637 DOI: 10.3390/molecules22061021] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
β-caryophyllene oxide (CAO), α-humulene (HUM), trans-nerolidol (NER) and valencene (VAL) are constituents of the essential oil of Myrica rubra (MEO), which has significant antiproliferative effect in various cancer cell lines. In the present study, we compared the antiproliferative effect of these sesquiterpenes alone and in combination with the cytostatic drug doxorubicin (DOX) in cancer cell lines with different sensitivity to DOX. Two ovarian cancer cell lines (sensitive A2780 and partly resistant SKOV3) and two lymphoblast cancer cell lines (sensitive CCRF/CEM and completely resistant CEM/ADR) were used. The observed effects varied among sesquiterpenes and also differed in individual cell lines, with only VAL being effective in all the cell lines. A strong synergism of DOX with NER was found in the A2780 cells, while DOX acted synergistically with HUM and CAO in the SKOV3 cells. In the CCRF/CEM cells, a synergism of DOX with CAO and NER was observed. In resistant CEM/ADR cells, sesquiterpenes did not increase DOX efficacy, although they significantly increased accumulation of DOX (up to 10-times) and rhodamine-123 (substrate of efflux transporter ABCB1) within cancer cells. In conclusion, the tested sesquiterpenes were able to improve DOX efficacy in the sensitive and partly resistant cancer cells, but not in cells completely resistant to DOX.
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Affiliation(s)
- Martin Ambrož
- Department of Biochemical Sciences, Faculty of Pharmacy, Charles University, Heyrovského 1203, 50005 Hradec Králové, Czech Republic.
| | - Petra Matoušková
- Department of Biochemical Sciences, Faculty of Pharmacy, Charles University, Heyrovského 1203, 50005 Hradec Králové, Czech Republic.
| | - Adam Skarka
- Department of Chemistry, Faculty of Science, University of Hradec Králové, Hradecká 1285, 50003 Hradec Králové, Czech Republic.
| | - Martina Zajdlová
- Department of Biochemical Sciences, Faculty of Pharmacy, Charles University, Heyrovského 1203, 50005 Hradec Králové, Czech Republic.
| | - Kateřina Žáková
- Department of Biochemical Sciences, Faculty of Pharmacy, Charles University, Heyrovského 1203, 50005 Hradec Králové, Czech Republic.
| | - Lenka Skálová
- Department of Biochemical Sciences, Faculty of Pharmacy, Charles University, Heyrovského 1203, 50005 Hradec Králové, Czech Republic.
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128
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Huang WL, Raja A, Hong BC, Lee GH. Organocatalytic Enantioselective Michael–Acetalization–Reduction–Nef Reaction for a One-Pot Entry to the Functionalized Aflatoxin System. Total Synthesis of (−)- Dihydroaflatoxin D2 and (−)- and (+)-Microminutinin. Org Lett 2017; 19:3494-3497. [DOI: 10.1021/acs.orglett.7b01473] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Wei-Lun Huang
- Department
of Chemistry and Biochemistry, National Chung Cheng University, Chia-Yi 621, Taiwan, R.O.C
| | - Arun Raja
- Department
of Chemistry and Biochemistry, National Chung Cheng University, Chia-Yi 621, Taiwan, R.O.C
| | - Bor-Cherng Hong
- Department
of Chemistry and Biochemistry, National Chung Cheng University, Chia-Yi 621, Taiwan, R.O.C
| | - Gene-Hsiang Lee
- Department
of Chemistry, National Taiwan University, Taipei 106, Taiwan, R.O.C
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129
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Nishikawa K, Yamauchi K, Kikuchi S, Ezaki S, Koyama T, Nokubo H, Matsumura K, Kodama T, Kumagai M, Morimoto Y. Total Syntheses of Lepadiformine Marine Alkaloids with Enantiodivergency, Utilizing Hg(OTf)
2
‐Catalyzed Cycloisomerization Reaction and their Cytotoxic Activities. Chemistry 2017; 23:9535-9545. [DOI: 10.1002/chem.201701475] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Keisuke Nishikawa
- Department of Chemistry, Graduate School of ScienceOsaka City University Sumiyoshi-ku Osaka 558–8585 Japan
| | - Kengo Yamauchi
- Department of Chemistry, Graduate School of ScienceOsaka City University Sumiyoshi-ku Osaka 558–8585 Japan
| | - Seiho Kikuchi
- Department of Chemistry, Graduate School of ScienceOsaka City University Sumiyoshi-ku Osaka 558–8585 Japan
| | - Shinnosuke Ezaki
- Department of Chemistry, Graduate School of ScienceOsaka City University Sumiyoshi-ku Osaka 558–8585 Japan
| | - Tomoyuki Koyama
- Department of Chemistry, Graduate School of ScienceOsaka City University Sumiyoshi-ku Osaka 558–8585 Japan
| | - Haruka Nokubo
- Department of Chemistry, Graduate School of ScienceOsaka City University Sumiyoshi-ku Osaka 558–8585 Japan
| | - Kunihiro Matsumura
- Department of Chemistry, Graduate School of ScienceOsaka City University Sumiyoshi-ku Osaka 558–8585 Japan
| | - Takeshi Kodama
- Department of Chemistry, Graduate School of ScienceOsaka City University Sumiyoshi-ku Osaka 558–8585 Japan
| | - Momochika Kumagai
- Department of Chemistry, Graduate School of ScienceOsaka City University Sumiyoshi-ku Osaka 558–8585 Japan
- Japan Food Research Laboratories Ibaraki-shi Osaka 567-0085 Japan
| | - Yoshiki Morimoto
- Department of Chemistry, Graduate School of ScienceOsaka City University Sumiyoshi-ku Osaka 558–8585 Japan
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Riedlmeier M, Ghirardo A, Wenig M, Knappe C, Koch K, Georgii E, Dey S, Parker JE, Schnitzler JP, Vlot AC. Monoterpenes Support Systemic Acquired Resistance within and between Plants. THE PLANT CELL 2017; 29:1440-1459. [PMID: 28536145 PMCID: PMC5502447 DOI: 10.1105/tpc.16.00898] [Citation(s) in RCA: 147] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 05/08/2017] [Accepted: 05/19/2017] [Indexed: 05/19/2023]
Abstract
This study investigates the role of volatile organic compounds in systemic acquired resistance (SAR), a salicylic acid (SA)-associated, broad-spectrum immune response in systemic, healthy tissues of locally infected plants. Gas chromatography coupled to mass spectrometry analyses of SAR-related emissions of wild-type and non-SAR-signal-producing mutant plants associated SAR with monoterpene emissions. Headspace exposure of Arabidopsis thaliana to a mixture of the bicyclic monoterpenes α-pinene and β-pinene induced defense, accumulation of reactive oxygen species, and expression of SA- and SAR-related genes, including the SAR regulatory AZELAIC ACID INDUCED1 (AZI1) gene and three of its paralogs. Pinene-induced resistance was dependent on SA biosynthesis and signaling and on AZI1 Arabidopsis geranylgeranyl reductase1 mutants with reduced monoterpene biosynthesis were SAR-defective but mounted normal local resistance and methyl salicylate-induced defense responses, suggesting that monoterpenes act in parallel with SA The volatile emissions from SAR signal-emitting plants induced defense in neighboring plants, and this was associated with the presence of α-pinene, β-pinene, and camphene in the emissions of the "sender" plants. Our data suggest that monoterpenes, particularly pinenes, promote SAR, acting through ROS and AZI1, and likely function as infochemicals in plant-to-plant signaling, thus allowing defense signal propagation between neighboring plants.
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Affiliation(s)
- Marlies Riedlmeier
- Helmholtz Zentrum Muenchen, Department of Environmental Sciences, Institute of Biochemical Plant Pathology, D-85764 Neuherberg, Germany
| | - Andrea Ghirardo
- Helmholtz Zentrum Muenchen, Institute of Biochemical Plant Pathology, Research Unit Environmental Simulation, D-85764 Neuherberg, Germany
| | - Marion Wenig
- Helmholtz Zentrum Muenchen, Department of Environmental Sciences, Institute of Biochemical Plant Pathology, D-85764 Neuherberg, Germany
| | - Claudia Knappe
- Helmholtz Zentrum Muenchen, Department of Environmental Sciences, Institute of Biochemical Plant Pathology, D-85764 Neuherberg, Germany
| | - Kerstin Koch
- Helmholtz Zentrum Muenchen, Institute of Biochemical Plant Pathology, Research Unit Environmental Simulation, D-85764 Neuherberg, Germany
| | - Elisabeth Georgii
- Helmholtz Zentrum Muenchen, Department of Environmental Sciences, Institute of Biochemical Plant Pathology, D-85764 Neuherberg, Germany
| | - Sanjukta Dey
- Helmholtz Zentrum Muenchen, Department of Environmental Sciences, Institute of Biochemical Plant Pathology, D-85764 Neuherberg, Germany
| | - Jane E Parker
- Max Planck Institute for Plant Breeding Research, Department of Plant-Microbe Interactions, D-50829 Cologne, Germany
| | - Jörg-Peter Schnitzler
- Helmholtz Zentrum Muenchen, Institute of Biochemical Plant Pathology, Research Unit Environmental Simulation, D-85764 Neuherberg, Germany
| | - A Corina Vlot
- Helmholtz Zentrum Muenchen, Department of Environmental Sciences, Institute of Biochemical Plant Pathology, D-85764 Neuherberg, Germany
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131
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Du Y, Pearce KC, Dai Y, Krai P, Dalal S, Cassera MB, Goetz M, Crawford TD, Kingston DGI. Antiplasmodial Sesquiterpenoid Lactones from Trichospira verticillata: Structure Elucidation by Spectroscopic Methods and Comparison of Experimental and Calculated ECD Data. JOURNAL OF NATURAL PRODUCTS 2017; 80:1639-1647. [PMID: 28463001 PMCID: PMC5679103 DOI: 10.1021/acs.jnatprod.7b00247] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
A dichloromethane extract of Trichospira verticillata from the Natural Products Discovery Institute was discovered to have good antiplasmodial activity (IC50 ∼5 μg/mL). After purification by liquid-liquid partition and C18 reversed-phase HPLC, four new germacranolide-type sesquiterpenoid lactones named trichospirolides A-D (1-4) were isolated. The structures of the new compounds were elucidated by analysis of their 1D and 2D NMR and MS data. The relative and absolute configurations were assigned based on a comparison of calculated and experimental ECD and UV spectra, specific rotations, internuclear distances, and coupling constants for all possible diastereomers for each compound. Among these four compounds, the conjugated dienone 1 displayed the most potent antiplasmodial activity, with an IC50 value of 1.5 μM.
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Affiliation(s)
- Yongle Du
- Department of Chemistry, M/C 0212, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Kirk C. Pearce
- Department of Chemistry, M/C 0212, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Yumin Dai
- Department of Chemistry, M/C 0212, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Priscilla Krai
- Department of Biochemistry, M/C 0346, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Seema Dalal
- Department of Biochemistry, M/C 0346, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Maria B. Cassera
- Virginia Tech Center for Drug Discovery, M/C 0212, Virginia Tech, Blacksburg, Virginia 24061, United States
- Department of Biochemistry, M/C 0346, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Michael Goetz
- Natural Products Discovery Institute, 3805 Old Easton Road, Doylestown, Pennsylvania 18902, United States
| | - T. Daniel Crawford
- Department of Chemistry, M/C 0212, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - David G. I. Kingston
- Department of Chemistry, M/C 0212, Virginia Tech, Blacksburg, Virginia 24061, United States
- Virginia Tech Center for Drug Discovery, M/C 0212, Virginia Tech, Blacksburg, Virginia 24061, United States
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132
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Tooriyama S, Mimori Y, Wu Y, Kogure N, Kitajima M, Takayama H. Asymmetric Total Synthesis of Pentacyclic Indole Alkaloid Andranginine and Absolute Configuration of Natural Product Isolated from Kopsia arborea. Org Lett 2017; 19:2722-2725. [DOI: 10.1021/acs.orglett.7b01076] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Shino Tooriyama
- Graduate School of Pharmaceutical
Sciences, Chiba University, 1-8-1 Inohana,
Chuo-ku, Chiba 260-8675, Japan
| | - Yuji Mimori
- Graduate School of Pharmaceutical
Sciences, Chiba University, 1-8-1 Inohana,
Chuo-ku, Chiba 260-8675, Japan
| | - Yuqiu Wu
- Graduate School of Pharmaceutical
Sciences, Chiba University, 1-8-1 Inohana,
Chuo-ku, Chiba 260-8675, Japan
| | - Noriyuki Kogure
- Graduate School of Pharmaceutical
Sciences, Chiba University, 1-8-1 Inohana,
Chuo-ku, Chiba 260-8675, Japan
| | - Mariko Kitajima
- Graduate School of Pharmaceutical
Sciences, Chiba University, 1-8-1 Inohana,
Chuo-ku, Chiba 260-8675, Japan
| | - Hiromitsu Takayama
- Graduate School of Pharmaceutical
Sciences, Chiba University, 1-8-1 Inohana,
Chuo-ku, Chiba 260-8675, Japan
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133
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Patil PC, Akamanchi KG. A new combination of cyclohexylhydrazine and IBX for oxidative generation of cyclohexyl free radical and related synthesis of parvaquone. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.04.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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134
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Le Bideau F, Kousara M, Chen L, Wei L, Dumas F. Tricyclic Sesquiterpenes from Marine Origin. Chem Rev 2017; 117:6110-6159. [DOI: 10.1021/acs.chemrev.6b00502] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Franck Le Bideau
- BioCIS,
Faculty of Pharmacy, Université Paris-Sud, CNRS, Université Paris-Saclay, 92290, Châtenay-Malabry, France
| | - Mohammad Kousara
- BioCIS,
Faculty of Pharmacy, Université Paris-Sud, CNRS, Université Paris-Saclay, 92290, Châtenay-Malabry, France
- Faculty
of Pharmacy, Al Andalus University, P.O. Box 101, Tartus, Al Qadmus, Syria
| | - Li Chen
- BioCIS,
Faculty of Pharmacy, Université Paris-Sud, CNRS, Université Paris-Saclay, 92290, Châtenay-Malabry, France
| | - Lai Wei
- BioCIS,
Faculty of Pharmacy, Université Paris-Sud, CNRS, Université Paris-Saclay, 92290, Châtenay-Malabry, France
| | - Françoise Dumas
- BioCIS,
Faculty of Pharmacy, Université Paris-Sud, CNRS, Université Paris-Saclay, 92290, Châtenay-Malabry, France
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135
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Rees M, Simpkins NS, Male L. An Asymmetric Organocatalysis Approach to the Prenylated Alkaloid Family. Org Lett 2017; 19:1338-1341. [DOI: 10.1021/acs.orglett.7b00193] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Matthew Rees
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, U.K
| | - Nigel S. Simpkins
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, U.K
| | - Louise Male
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, B15 2TT, U.K
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136
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Hoshino A, Nakai H, Morino M, Nishikawa K, Kodama T, Nishikibe K, Morimoto Y. Total Synthesis of the Cytotoxic Marine Triterpenoid Isodehydrothyrsiferol Reveals Partial Enantiodivergency in the Thyrsiferol Family of Natural Products. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611829] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Akihiro Hoshino
- Department of Chemistry, Graduate School of Science; Osaka City University; Sumiyoshi-ku Osaka 558-8585 Japan
| | - Haruka Nakai
- Department of Chemistry, Graduate School of Science; Osaka City University; Sumiyoshi-ku Osaka 558-8585 Japan
| | - Miyako Morino
- Department of Chemistry, Graduate School of Science; Osaka City University; Sumiyoshi-ku Osaka 558-8585 Japan
| | - Keisuke Nishikawa
- Department of Chemistry, Graduate School of Science; Osaka City University; Sumiyoshi-ku Osaka 558-8585 Japan
| | - Takeshi Kodama
- Department of Chemistry, Graduate School of Science; Osaka City University; Sumiyoshi-ku Osaka 558-8585 Japan
| | - Kento Nishikibe
- Department of Chemistry, Graduate School of Science; Osaka City University; Sumiyoshi-ku Osaka 558-8585 Japan
| | - Yoshiki Morimoto
- Department of Chemistry, Graduate School of Science; Osaka City University; Sumiyoshi-ku Osaka 558-8585 Japan
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137
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Hoshino A, Nakai H, Morino M, Nishikawa K, Kodama T, Nishikibe K, Morimoto Y. Total Synthesis of the Cytotoxic Marine Triterpenoid Isodehydrothyrsiferol Reveals Partial Enantiodivergency in the Thyrsiferol Family of Natural Products. Angew Chem Int Ed Engl 2017; 56:3064-3068. [DOI: 10.1002/anie.201611829] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 01/12/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Akihiro Hoshino
- Department of Chemistry, Graduate School of Science; Osaka City University; Sumiyoshi-ku Osaka 558-8585 Japan
| | - Haruka Nakai
- Department of Chemistry, Graduate School of Science; Osaka City University; Sumiyoshi-ku Osaka 558-8585 Japan
| | - Miyako Morino
- Department of Chemistry, Graduate School of Science; Osaka City University; Sumiyoshi-ku Osaka 558-8585 Japan
| | - Keisuke Nishikawa
- Department of Chemistry, Graduate School of Science; Osaka City University; Sumiyoshi-ku Osaka 558-8585 Japan
| | - Takeshi Kodama
- Department of Chemistry, Graduate School of Science; Osaka City University; Sumiyoshi-ku Osaka 558-8585 Japan
| | - Kento Nishikibe
- Department of Chemistry, Graduate School of Science; Osaka City University; Sumiyoshi-ku Osaka 558-8585 Japan
| | - Yoshiki Morimoto
- Department of Chemistry, Graduate School of Science; Osaka City University; Sumiyoshi-ku Osaka 558-8585 Japan
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138
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Ragini K, Fromont J, Piggott AM, Karuso P. Enantiodivergence in the Biosynthesis of Bromotyrosine Alkaloids from Sponges? JOURNAL OF NATURAL PRODUCTS 2017; 80:215-219. [PMID: 28085276 DOI: 10.1021/acs.jnatprod.6b01038] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The isolation of bromotyrosine alkaloids, some of which are enantiomers of previously isolated compounds, has highlighted a possible enantiodivergence in their biosynthesis. Two new (1, 2) and six known bromotyrosine alkaloids (4-9), and the enantiomer (10) of a known compound, have been isolated from a Western Australian marine sponge, Pseudoceratina cf. verrucosa. The compounds inhibited the growth of multidrug-resistant and methicillin-resistant Staphylococcus aureus with comparable activity to vancomycin. In addition, one possible artifact of extraction (3) containing an ethoxy group was isolated. From analysis of the known bromotyrosine alkaloids, a biogenesis is proposed that explains the formation of antipodal natural products within this family of sponges.
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Affiliation(s)
- Kavita Ragini
- Department of Chemistry and Biomolecular Sciences, Macquarie University , Sydney, NSW 2109, Australia
| | - Jane Fromont
- Department of Aquatic Zoology, Western Australian Museum , Western Australia 6106, Australia
| | - Andrew M Piggott
- Department of Chemistry and Biomolecular Sciences, Macquarie University , Sydney, NSW 2109, Australia
| | - Peter Karuso
- Department of Chemistry and Biomolecular Sciences, Macquarie University , Sydney, NSW 2109, Australia
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139
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Berlinck RGS, Bertonha AF, Takaki M, Rodriguez JPG. The chemistry and biology of guanidine natural products. Nat Prod Rep 2017; 34:1264-1301. [DOI: 10.1039/c7np00037e] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The chemistry and biology of natural guanidines isolated from microbial culture media, from marine invertebrates, as well as from terrestrial plants and animals, are reviewed.
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Affiliation(s)
| | - Ariane F. Bertonha
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brazil
| | - Mirelle Takaki
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brazil
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140
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Avilés-Moreno JR, Gámez F, Berden G, Oomens J, Martínez-Haya B. Isolated alkali cation complexes of the antibiotic ionophore nonactin: correlation with crystalline structures. Phys Chem Chem Phys 2017; 19:14984-14991. [DOI: 10.1039/c7cp02438j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The stabilization of the nonactin–Na+ complex in a S4 or C2 conformation constitutes a challenging benchmark for experimental and modelling methods.
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Affiliation(s)
- Juan Ramón Avilés-Moreno
- Department of Physical
- Chemical and Natural Systems
- Universidad Pablo de Olavide
- E-41013 Seville
- Spain
| | - Francisco Gámez
- Department of Physical
- Chemical and Natural Systems
- Universidad Pablo de Olavide
- E-41013 Seville
- Spain
| | - Giel Berden
- Radboud University
- Institute for Molecules and Materials
- FELIX Laboratory
- 6525ED Nijmegen
- The Netherlands
| | - Jos Oomens
- Radboud University
- Institute for Molecules and Materials
- FELIX Laboratory
- 6525ED Nijmegen
- The Netherlands
| | - Bruno Martínez-Haya
- Department of Physical
- Chemical and Natural Systems
- Universidad Pablo de Olavide
- E-41013 Seville
- Spain
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141
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Olivier WJ, Kilah NL, Horne J, Bissember AC, Smith JA. ent-Labdane Diterpenoids from Dodonaea viscosa. JOURNAL OF NATURAL PRODUCTS 2016; 79:3117-3126. [PMID: 28006912 DOI: 10.1021/acs.jnatprod.6b00858] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Seven new and two known ent-labdane diterpenoids have been isolated from a single plant specimen of Dodonaea viscosa ssp. spatulata, found in Tasmania, Australia. Prior to this study, only seven different labdane diterpenoids had been isolated from D. viscosa. The structures of the natural products were assigned via 1D and 2D NMR spectroscopy and other standard spectroscopic methods. The absolute configuration of three ent-labdane diterpenoids was determined by single-crystal X-ray crystallography of synthetic derivatives. Significantly, the results of this study suggest that the absolute configuration of some known labdane diterpenoids may have been misassigned.
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Affiliation(s)
- Wesley J Olivier
- School of Physical Sciences-Chemistry and ‡Central Science Laboratory, University of Tasmania , Hobart, Tasmania, Australia
| | - Nathan L Kilah
- School of Physical Sciences-Chemistry and ‡Central Science Laboratory, University of Tasmania , Hobart, Tasmania, Australia
| | - James Horne
- School of Physical Sciences-Chemistry and ‡Central Science Laboratory, University of Tasmania , Hobart, Tasmania, Australia
| | - Alex C Bissember
- School of Physical Sciences-Chemistry and ‡Central Science Laboratory, University of Tasmania , Hobart, Tasmania, Australia
| | - Jason A Smith
- School of Physical Sciences-Chemistry and ‡Central Science Laboratory, University of Tasmania , Hobart, Tasmania, Australia
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142
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Volpin G, Vepřek NA, Bellan AB, Trauner D. Enantioselektive Synthese und Racemisierung von (−)‐Sinoracutin. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201608206] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Giulio Volpin
- Department of Chemistry Ludwig-Maximilians-Universität München 81377 München Deutschland
| | - Nynke A. Vepřek
- Department of Chemistry Ludwig-Maximilians-Universität München 81377 München Deutschland
| | - Andreas B. Bellan
- Department of Chemistry Ludwig-Maximilians-Universität München 81377 München Deutschland
| | - Dirk Trauner
- Department of Chemistry Ludwig-Maximilians-Universität München 81377 München Deutschland
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143
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Volpin G, Vepřek NA, Bellan AB, Trauner D. Enantioselective Synthesis and Racemization of (-)-Sinoracutine. Angew Chem Int Ed Engl 2016; 56:897-901. [PMID: 27990734 DOI: 10.1002/anie.201608206] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Indexed: 11/12/2022]
Abstract
Sinoracutine is a recently isolated alkaloid with unusual stereochemical and biological properties. It features an unprecedented tetracyclic 6/6/5/5 skeleton that bears an N-methylpyrrolidine ring fused to a cyclopentenone. Interestingly, both enantiomers of sinoracutine have been independently isolated from the same plant, yet the molecule does not appear to occur as a racemate. Here, we present a short synthesis of (-)-sinoracutine that relies on a highly diastereoselective Pauson-Khand reaction and a Mandai-Claisen reaction to install the quaternary stereocenter. Our work establishes the absolute configuration of the levorotatory isomer and suggests that the optical purity of sinoracutine varies in nature due to its gradual racemization. Experimental evidence supports this proposal, and a plausible mechanism for the racemization is provided.
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Affiliation(s)
- Giulio Volpin
- Department of Chemistry, Ludwig-Maximilians-Universität München, 81377, Munich, Germany
| | - Nynke A Vepřek
- Department of Chemistry, Ludwig-Maximilians-Universität München, 81377, Munich, Germany
| | - Andreas B Bellan
- Department of Chemistry, Ludwig-Maximilians-Universität München, 81377, Munich, Germany
| | - Dirk Trauner
- Department of Chemistry, Ludwig-Maximilians-Universität München, 81377, Munich, Germany
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144
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145
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Tian DS, Yi P, Xia L, Xiao X, Fan YM, Gu W, Huang LJ, Ben-David Y, Di YT, Yuan CM, Hao XJ. Garmultins A-G, Biogenetically Related Polycyclic Acylphloroglucinols from Garcinia multiflora. Org Lett 2016; 18:5904-5907. [PMID: 27934507 DOI: 10.1021/acs.orglett.6b03004] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Garmultins A and B (1 and 2), two polycyclic polyprenylated acylphloroglucinols characterized by the coupling of two novel cages, 2,11-dioxatricyclo[4.4.1.03,9]undecane and tricyclo[4.3.1.03,7]decane, along with five biogenetically related analogues (3-7), were isolated from Garcinia multiflora. Their structures and absolute configurations were determined by extensive NMR analysis, X-ray crystallography, and electronic circular dichroism calculations. Three compounds were capable of inhibiting oncogene expression and inducing apoptosis in human erythroleukemia cells.
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Affiliation(s)
- Dong Song Tian
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences , Guiyang 550002, P. R. China.,Guizhou University , Guiyang 550025, P. R. China
| | - Ping Yi
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences , Guiyang 550002, P. R. China
| | - Lei Xia
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences , Guiyang 550002, P. R. China
| | - Xin Xiao
- Guizhou University , Guiyang 550025, P. R. China
| | - Yi Min Fan
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences , Guiyang 550002, P. R. China
| | - Wei Gu
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences , Guiyang 550002, P. R. China
| | - Lie Jun Huang
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences , Guiyang 550002, P. R. China
| | - Yaacov Ben-David
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences , Guiyang 550002, P. R. China
| | - Ying Tong Di
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, P. R. China
| | - Chun Mao Yuan
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences , Guiyang 550002, P. R. China
| | - Xiao Jiang Hao
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences , Guiyang 550002, P. R. China.,State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences , Kunming 650201, P. R. China
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146
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Sai CM, Qin NB, Jia CC, Li DH, Wang KB, Pei YH, Bai J, Li ZL, Hua HM. Macleayine, a new alkaloid from Macleaya cordata. CHINESE CHEM LETT 2016. [DOI: 10.1016/j.cclet.2016.06.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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147
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Baral ER, Kim SH, Lee YR. Copper-Catalyzed C(sp2)-C(sp3) Cross-Dehydrogenative Coupling of Quinones with Cyclic Alkanes: One-Step Access to Parvaquone and its Analogs. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600219] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Ek Raj Baral
- School of Chemical Engineering; Yeungnam University; Gyeongsan 712-749 Republic of Korea
| | - Sung Hong Kim
- Analysis Research Division; Daegu Center; Basic Science Institute; Daegu 702-701 Republic of Korea
| | - Yong Rok Lee
- School of Chemical Engineering; Yeungnam University; Gyeongsan 712-749 Republic of Korea
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148
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Garcia-Castro M, Zimmermann S, Sankar MG, Kumar K. Gerüstdiversitätsbasierte Synthese und ihre Anwendung bei der Sonden- und Wirkstoffsuche. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201508818] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Miguel Garcia-Castro
- Abteilung Chemische Biologie; Max-Planck-Institut für molekulare Physiologie; Otto-Hahn-Straße 11 44227 Dortmund Deutschland
| | - Stefan Zimmermann
- Abteilung Chemische Biologie; Max-Planck-Institut für molekulare Physiologie; Otto-Hahn-Straße 11 44227 Dortmund Deutschland
| | - Muthukumar G. Sankar
- Abteilung Chemische Biologie; Max-Planck-Institut für molekulare Physiologie; Otto-Hahn-Straße 11 44227 Dortmund Deutschland
| | - Kamal Kumar
- Abteilung Chemische Biologie; Max-Planck-Institut für molekulare Physiologie; Otto-Hahn-Straße 11 44227 Dortmund Deutschland
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149
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Garcia-Castro M, Zimmermann S, Sankar MG, Kumar K. Scaffold Diversity Synthesis and Its Application in Probe and Drug Discovery. Angew Chem Int Ed Engl 2016; 55:7586-605. [DOI: 10.1002/anie.201508818] [Citation(s) in RCA: 113] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2015] [Revised: 01/19/2016] [Indexed: 01/19/2023]
Affiliation(s)
- Miguel Garcia-Castro
- Department of Chemical Biology; Max Planck Institute of Molecular Physiology; Otto-Hahn-Strasse 11 44227 Dortmund Germany
| | - Stefan Zimmermann
- Department of Chemical Biology; Max Planck Institute of Molecular Physiology; Otto-Hahn-Strasse 11 44227 Dortmund Germany
| | - Muthukumar G. Sankar
- Department of Chemical Biology; Max Planck Institute of Molecular Physiology; Otto-Hahn-Strasse 11 44227 Dortmund Germany
| | - Kamal Kumar
- Department of Chemical Biology; Max Planck Institute of Molecular Physiology; Otto-Hahn-Strasse 11 44227 Dortmund Germany
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150
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Chen MH, Lin S, Wang YN, Zhu CG, Li YH, Jiang JD, Shi JG. Antiviral stereoisomers of 3,5-bis(2-hydroxybut-3-en-1-yl)-1,2,4-thiadiazole from the roots of Isatis indigotica. CHINESE CHEM LETT 2016. [DOI: 10.1016/j.cclet.2016.01.042] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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