Search Results - "Hiraga, Yoshikazu"

Metabolic perturbation to enhance polyketide and nonribosomal peptide antibiotic production using triclosan and ribosome-targeting drugs by Tanaka, Yukinori, Izawa, Masumi, Hiraga, Yoshikazu, Misaki, Yuya, Watanabe, Tomoko, Ochi, Kozo

“…Although transcriptional activation of pathwayspecific positive regulatory genes and/or biosynthetic genes is primarily important for enhancing secondary…”
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Micellar Mechanisms for Desymmetrization Reactions in Aqueous Media by Niwayama, Satomi, Hiraga, Yoshikazu

“…Water-mediated organic reactions significantly contribute to the protection of the environment. Desymmetrization reactions, which convert only one of the…”
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Concentration and Temperature Dependency of Regio- and Stereoselectivity in a Photochemical [2 + 2] Cycloaddition Reaction (the Paternò−Büchi Reaction): Origin of the Hydroxy-Group Directivity by Yabuno, Youhei, Hiraga, Yoshikazu, Takagi, Ryukichi, Abe, Manabu

“…A set of photochemical oxetane formation reactions, i.e., the Paternò−Büchi (PB) reactions, of tetrahydrobenzofuranol derivatives 1a−d with benzophenone (BP)…”
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Combined Drug Resistance Mutations Substantially Enhance Enzyme Production in Paenibacillus agaridevorans by Funane, Kazumi, Tanaka, Yukinori, Hosaka, Takeshi, Murakami, Kiriko, Miyazaki, Takatsugu, Shiwa, Yuh, Gibu, Shigehachi, Inaoka, Takashi, Kasahara, Ken, Fujita, Nobuyuki, Yoshikawa, Hirofumi, Hiraga, Yoshikazu, Ochi, Kozo

“…This study shows that sequential introduction of drug resistance mutations substantially increased enzyme production in The triple mutant YT478 ( Gln225→stop…”
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Marangoni flow around a camphor disk regenerated by the interaction between camphor and sodium dodecyl sulfate molecules by Nakata, Satoshi, Tenno, Ryoichi, Deguchi, Ayano, Yamamoto, Hiroya, Hiraga, Yoshikazu, Izumi, Shunsuke

“…•Marangoni flow around a camphor disk placed on an anionic surfactant aqueous phase was regenerated.•Regeneration was investigated by 13C NMR, NOE experiments,…”
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Screening and Identification of Precursor Compounds of Dimethyl Trisulfide (DMTS) in Japanese Sake by Isogai, Atsuko, Kanda, Ryoko, Hiraga, Yoshikazu, Nishimura, Toshihide, Iwata, Hiroshi, Goto-Yamamoto, Nami

“…Dimethyl trisulfide (DMTS) is involved in the unpalatable aroma of stale sake, called “hineka”; however, the mechanism underlying the formation of DMTS during…”
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13C NMR Spectroscopic Studies of Intra- and Intermolecular Interactions of Amino Acid Derivatives and Peptide Derivatives in Solutions by Hiraga, Yoshikazu, Chaki, Saori, Uyama, Yuri, Hoshide, Ryosuke, Karaki, Takumi, Nagata, Daisuke, Yoshimoto, Kanji, Niwayama, Satomi

“…13C NMR spectroscopic investigations were conducted for various amino acid derivatives and peptides. It was observed that 13C NMR chemical shifts of the…”
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Contribution of 1,2-Dihydroxy-5-(methylsulfinyl)pentan-3-one (DMTS-P1) to the Formation of Dimethyl Trisulfide (DMTS) during the Storage of Japanese Sake by Isogai, Atsuko, Kanda, Ryoko, Hiraga, Yoshikazu, Iwata, Hiroshi, Sudo, Shigetoshi

“…Dimethyl trisulfide (DMTS) is involved in the unpalatable aroma of stale Japanese sake, called “hineka”. Recently, we isolated one of the precursor compounds…”
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Formation of Isomerized E,Z-Configured 1,3-Dienes in Construction of Macrocyclic Trienes by Diene-Ene RCM by Takagi, Ryukichi, Tanaka, Kenji, Yamamoto, Koumei, Hiraga, Yoshikazu, Kojima, Satoshi, Abe, Manabu

“…Construction of macrocyclic trienes by diene-ene RCM of tetraenes was examined. In the reactions, macrocyclic trienes were obtained as a mixture of two isomers…”
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A novel non-metathetic behavior of Grubbs catalyst: Ruthenium-mediated intramolecular [3 + 2] cycloaddition of bis-1,3-dienes by Takagi, Ryukichi, Yamamoto, Koumei, Hiraga, Yoshikazu, Kojima, Satoshi, Abe, Manabu

“…A ruthenium-mediated intramolecular [3 + 2] cycloaddition of bis-1,3-dienes to give bicyclic products, which is a novel non-metathetic behavior of Grubbs…”
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Multiple functions of ergosterol in the fission yeast Schizosaccharomyces pombe by Iwaki, Tomoko, Iefuji, Haruyuki, Hiraga, Yoshikazu, Hosomi, Akira, Morita, Tomotake, Giga-Hama, Yuko, Takegawa, Kaoru

“…1 Department of Life Sciences, Faculty of Agriculture, Kagawa University, Miki-cho, Kagawa 761-0795, Japan 2 Research Center, Asahi Glass Co. Ltd, Yokohama,…”
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Hydroxy-group effect on the regioselectivity in a photochemical oxetane formation reaction (the Paternò-Büchi Reaction) of geraniol derivatives by Hisamoto, Ken, Hiraga, Yoshikazu, Abe, Manabu

“…The Paternò-Büchi (PB) reaction of geraniol derivatives 1, which contain allylic alcohol functionality and unfunctionalized double bonds, with benzophenone was…”
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Stereochemical deuterium-labeling study on the denitrogenation of 7,7-diethoxy-2,3-diazabicyclo[2.2.1]hept-2-ene by Yagi, Shingo, Hiraga, Yoshikazu, Takagi, Ryukichi, Abe, Manabu

“…A stereochemical deuterium‐labeling study of the thermal and photochemical denitrogenation of the exo‐selectively dideuterated azoalkane…”
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Influence of co-solvents in the highly efficient selective monohydrolysis of a symmetric diester by Niwayama, Satomi, Wang, Hezhen, Hiraga, Yoshikazu, Clayton, J. Cole

“…The influence of co-solvents in the selective monohydrolysis of a symmetric diester has been examined. The influence of the co-solvents in the selective…”
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Site- and Stereoselectivity in the Photochemical Oxetane Formation Reaction (Paternò–Büchi Reaction) of Tetrahydrobenzofuranols with Benzophenone: Hydroxy-directed Diastereoselectivity? by Yabuno, Youhei, Hiraga, Yoshikazu, Abe, Manabu

“…The Paternò–Büchi reactions of tetrahydrobenzofuranols with benzophenone were investigated to reveal site- and stereoselectivity in oxetane formation…”
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Formation of macrocyclic lactones in the Paternò-Büchi dimerization reaction by Arimura, Junya, Mizuta, Tsutomu, Hiraga, Yoshikazu, Abe, Manabu

“…Furan-2-ylmethyl 2-oxoacetates 1a,b, in which the furan ring and the carbonyl moiety were embedded intramolecularly, were synthesized from commercially…”
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Studies on Ring-Closing Metathesis for the Formation of the 11-Membered Ring System of Daphnezomine C by Tanabe, Kazuhisa, Fujie, Ayako, Ohmori, Naoki, Hiraga, Yoshikazu, Kojima, Satoshi, Ohkata, Katsuo

“…For the purpose of synthesizing daphnezomine C, model systems were examined to see if the ring-closing metathesis (RCM) reaction could be applied to prepare an…”
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New exo/ endo selectivity observed in monohydrolysis of dialkyl bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylates by Niwayama, Satomi, Hiraga, Yoshikazu

“…New monohydrolysis reactions of several exo or endo dimethyl or diethyl bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylates showed higher selectivity toward…”
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Two-parameter Analysis of Solvent Effects on Selectivity in Chemical Reactions: Information of Polarity and Activation Volume at the Transition State in Organic and Enzymatic Reactions by Lin, Chunlei, Hiraga, Yoshikazu, Ohkata, Katsuo

“…The solvent effects on stereoselectivity in the Diels–Alder reaction of cyclopentadiene, the [2 + 2]photodimerization of 2-cyclopentenone, and the enzymatic…”
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A New Digalactosyl Diacylglycerol from a Cultured Marine Dinoflagellate Heterocapsa circularisquama by HIRAGA, Yoshikazu, KAKU, Ken, OMODA, Daisuke, SUGIHARA, Kinuko, HOSOYA, Hiroshi, HINO, Mizuki

“…A new digalactosyl diacylglycerol (1) has been isolated from the cultured marine dinoflagellate Heterocapsa circularisquama together with known monogalactosyl…”
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