The Experts below are selected from a list of 81 Experts worldwide ranked by ideXlab platform
Yutong Shi - One of the best experts on this subject based on the ideXlab platform.
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Isolation and structure determination of a new Indene Derivative from endophytic fungus Aspergillus flavipes Y-62.
Natural product research, 2018Co-Authors: Najeeb Akhter, Chengqian Pan, Yanqin Liu, Yutong ShiAbstract:As part of the search for naturally derived secondary metabolites, a novel Indene Derivative, compound 1, together with nine known metabolites (2–10) have been purified from an ethyl acetate extrac...
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Isolation and structure determination of a new Indene Derivative from endophytic fungus Aspergillus flavipes Y-62
2018Co-Authors: Najeeb Akhter, Chengqian Pan, Yanqin Liu, Yutong ShiAbstract:As part of the search for naturally derived secondary metabolites, a novel Indene Derivative, compound 1, together with nine known metabolites (2–10) have been purified from an ethyl acetate extract of the plant-associated fungus Aspergillus flavipes Y-62, isolated from Suaeda glauca (Bunge) Bunge which was collected along Zhoushan coast, Zhejiang province, East China. The structure of the new compound 1 was elucidated by extensive use of spectroscopic techniques like 1D, 2D NMR, and HR-TOF-MS, while the known metabolites were established based on both spectral methods as well as by comparison with the previous literature. Compound 1 exhibited antimicrobial activities against the gram-negative pathogen Pseudomonas aeruginosa and Klebsiella pneumoniae with equal MIC values of 32 µg/ml.
Najeeb Akhter - One of the best experts on this subject based on the ideXlab platform.
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Isolation and structure determination of a new Indene Derivative from endophytic fungus Aspergillus flavipes Y-62.
Natural product research, 2018Co-Authors: Najeeb Akhter, Chengqian Pan, Yanqin Liu, Yutong ShiAbstract:As part of the search for naturally derived secondary metabolites, a novel Indene Derivative, compound 1, together with nine known metabolites (2–10) have been purified from an ethyl acetate extrac...
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Isolation and structure determination of a new Indene Derivative from endophytic fungus Aspergillus flavipes Y-62
2018Co-Authors: Najeeb Akhter, Chengqian Pan, Yanqin Liu, Yutong ShiAbstract:As part of the search for naturally derived secondary metabolites, a novel Indene Derivative, compound 1, together with nine known metabolites (2–10) have been purified from an ethyl acetate extract of the plant-associated fungus Aspergillus flavipes Y-62, isolated from Suaeda glauca (Bunge) Bunge which was collected along Zhoushan coast, Zhejiang province, East China. The structure of the new compound 1 was elucidated by extensive use of spectroscopic techniques like 1D, 2D NMR, and HR-TOF-MS, while the known metabolites were established based on both spectral methods as well as by comparison with the previous literature. Compound 1 exhibited antimicrobial activities against the gram-negative pathogen Pseudomonas aeruginosa and Klebsiella pneumoniae with equal MIC values of 32 µg/ml.
Kazuhiko Takai - One of the best experts on this subject based on the ideXlab platform.
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insertion of polar and nonpolar unsaturated molecules into carbon rhenium bonds generated by c h bond activation synthesis of phthalimidine and Indene Derivatives
Journal of the American Chemical Society, 2006Co-Authors: Yoichiro Kuninobu, Atsushi Kawata, Yukimi Tokunaga, Kazuhiko TakaiAbstract:A rhenium complex, [ReBr(CO)3(thf)]2, catalyzes the reaction of an aromatic aldimine with an isocyanate and an acetylene to give a phthalimidine and an Indene Derivative in a quantitative yield, respectively. The reactions proceed via C−H bond activation, insertion of the isocyanate or the acetylene, intramolecular nucleophilic cyclization to the aldimine of the generated amido− or alkenyl−rhenium species, and reductive elimination. In contrast to ruthenium and rhodium catalysts, which are usually employed in this type of reaction, the rhenium catalyst promotes the insertion of a polar unsaturated molecule. This occurs more easily than the insertion of a nonpolar unsaturated molecule.
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rhenium catalyzed formation of Indene frameworks via c h bond activation 3 2 annulation of aromatic aldimines and acetylenes
Journal of the American Chemical Society, 2005Co-Authors: Yoichiro Kuninobu, Atsushi Kawata, Kazuhiko TakaiAbstract:A rhenium complex, [ReBr(CO)3(thf)]2, catalyzes the reaction of an aromatic aldimine with an acetylene to give an Indene Derivative in a quantitative yield. The reaction proceeds via C−H bond activation, insertion of the acetylene, intramolecular nucleophilic cyclization, and reductive elimination. In contrast to ruthenium and rhodium catalysts, which are usually employed in this type of reaction, the rhenium catalyst promotes the intramolecular nucleophilic cyclization of the alkenylmetal species generated by insertion of the acetylene.
Yanqin Liu - One of the best experts on this subject based on the ideXlab platform.
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Isolation and structure determination of a new Indene Derivative from endophytic fungus Aspergillus flavipes Y-62.
Natural product research, 2018Co-Authors: Najeeb Akhter, Chengqian Pan, Yanqin Liu, Yutong ShiAbstract:As part of the search for naturally derived secondary metabolites, a novel Indene Derivative, compound 1, together with nine known metabolites (2–10) have been purified from an ethyl acetate extrac...
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Isolation and structure determination of a new Indene Derivative from endophytic fungus Aspergillus flavipes Y-62
2018Co-Authors: Najeeb Akhter, Chengqian Pan, Yanqin Liu, Yutong ShiAbstract:As part of the search for naturally derived secondary metabolites, a novel Indene Derivative, compound 1, together with nine known metabolites (2–10) have been purified from an ethyl acetate extract of the plant-associated fungus Aspergillus flavipes Y-62, isolated from Suaeda glauca (Bunge) Bunge which was collected along Zhoushan coast, Zhejiang province, East China. The structure of the new compound 1 was elucidated by extensive use of spectroscopic techniques like 1D, 2D NMR, and HR-TOF-MS, while the known metabolites were established based on both spectral methods as well as by comparison with the previous literature. Compound 1 exhibited antimicrobial activities against the gram-negative pathogen Pseudomonas aeruginosa and Klebsiella pneumoniae with equal MIC values of 32 µg/ml.
Chengqian Pan - One of the best experts on this subject based on the ideXlab platform.
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Isolation and structure determination of a new Indene Derivative from endophytic fungus Aspergillus flavipes Y-62.
Natural product research, 2018Co-Authors: Najeeb Akhter, Chengqian Pan, Yanqin Liu, Yutong ShiAbstract:As part of the search for naturally derived secondary metabolites, a novel Indene Derivative, compound 1, together with nine known metabolites (2–10) have been purified from an ethyl acetate extrac...
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Isolation and structure determination of a new Indene Derivative from endophytic fungus Aspergillus flavipes Y-62
2018Co-Authors: Najeeb Akhter, Chengqian Pan, Yanqin Liu, Yutong ShiAbstract:As part of the search for naturally derived secondary metabolites, a novel Indene Derivative, compound 1, together with nine known metabolites (2–10) have been purified from an ethyl acetate extract of the plant-associated fungus Aspergillus flavipes Y-62, isolated from Suaeda glauca (Bunge) Bunge which was collected along Zhoushan coast, Zhejiang province, East China. The structure of the new compound 1 was elucidated by extensive use of spectroscopic techniques like 1D, 2D NMR, and HR-TOF-MS, while the known metabolites were established based on both spectral methods as well as by comparison with the previous literature. Compound 1 exhibited antimicrobial activities against the gram-negative pathogen Pseudomonas aeruginosa and Klebsiella pneumoniae with equal MIC values of 32 µg/ml.
