نتایج جستجو برای: methyl ketones

تعداد نتایج: 117877  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2015
Madhesan Balakrishnan Eric R Sacia Sanil Sreekumar Gorkem Gunbas Amit A Gokhale Corinne D Scown F Dean Toste Alexis T Bell

Decarbonizing the transportation sector is critical to achieving global climate change mitigation. Although biofuels will play an important role in conventional gasoline and diesel applications, bioderived solutions are particularly important in jet fuels and lubricants, for which no other viable renewable alternatives exist. Producing compounds for jet fuel and lubricant base oil applications ...

Journal: :The Journal of biological chemistry 2004
Marco W Fraaije Nanne M Kamerbeek Annelies J Heidekamp Riccardo Fortin Dick B Janssen

EtaA is a newly identified FAD-containing monooxygenase that is responsible for activation of several thioamide prodrugs in Mycobacterium tuberculosis. It was found that purified EtaA displays a remarkably low activity with the antitubercular prodrug ethionamide. Hinted by the presence of a Baeyer-Villiger monooxygenase sequence motif in the EtaA sequence, we have been able to identify a large ...

Journal: :Molecules 2014
Gemma Palencia Maria Luisa Ibargoitia Maria Fresno Patricia Sopelana Maria Dolores Guillén

In this work, the volatile fraction of unsmoked and smoked Herreño cheese, a type of soft cheese from the Canary Islands, has been characterized for the first time. In order to evaluate if the position in the smokehouse could influence the volatile profile of the smoked variety, cheeses smoked at two different heights were studied. The volatile components were extracted by Solid Phase Microextr...

2010
Ester Innocent Cosam C. Joseph Nicholas K. Gikonyo Mayunga H.H. Nkunya Ahmed Hassanali

In traditional African communities, repellent volatiles from certain plants generated by direct burning or by thermal expulsion have played an important role in protecting households against vectors of malaria and other diseases. Previous research on volatile constituents of plants has shown that some are good sources of potent mosquito repellents. In this bioprospecting initiative, the essenti...

2005
Anna MIYAZAKI Yutaka FUJISAWA Kimitaka SHIOTANI Yoshio FUJITA Tingyou LI Yuko TSUDA Toshio YOKOI Sharon D. BRYANT Lawrence H. LAZARUS Yoshio OKADA

synthesized from dipeptidyl chloromethyl ketones or methyl ketones. According to this novel procedure, various functional groups could be introduced into positions 3 and 6 of 1,2-dihydropyrazin-2-one by using appropriate amino acids (Chart 2). It had been assumed that the formation of the 1,2-dihydropyrazin-2-one ring from dipeptidyl chloromethyl ketones proceeded according to the mechanism sho...

Journal: :Chemical senses 1999
J Bau D Martínez M Renou A Guerrero

In a wind tunnel trifluoromethyl ketones (TFMKs) have been found to disrupt the orientation flight of male moths to pheromone sources (virgin females or synthetic pheromone). This is demonstrated by comparison of the flight parameters of the Egyptian armyworm Spodoptera littoralis and the Mediterranean corn borer Sesamia nonagrioides, which had been topically treated with TFMKs, with those calc...

2008
Hoong-Kun Fun Samuel Robinson Jebas

In the crystal structure of the title compound, C(15)H(15)NO, the two benzene rings are twisted from each other by a dihedral angle of 47.97 (4)°. The crystal structure is stabilized by weak inter-molecular C-H⋯O and C-H⋯π inter-actions, and π-π inter-actions with a centroid-centroid distance of 3.8493 (5) Å are observed.

2009
Yang Wang Xin-yi Zhu Xiao-yan Ma Guo-wei Gao Jian Men

In the mol-ecule of the title compound, C(25)H(20)N(2)O(3), the dihedral angles formed by adjacent benzene rings are 66.75 (8), 48.37 (8) and 71.43 (9)°. In the crystal structure, centrosymmetrically related mol-ecules are linked into dimers by inter-molecular N-H⋯O hydrogen bonds.

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