Search Results - "Obara, Heitaro"

Synthesis and spectral properties of polymethine-cyanine dye–nitroxide radical hybrid compounds for use as fluorescence probes to monitor reducing species and radicals by Sato, Shingo, Tsunoda, Minoru, Suzuki, Minoru, Kutsuna, Masahiro, Takido-uchi, Kiyomi, Shindo, Mitsuru, Mizuguchi, Hitoshi, Obara, Heitaro, Ohya, Hiroaki

“…Various hybrid compounds comprised of two types of nitroxide radicals and either a pentamethine (Cy5) or trimethine cyanine (Cy3) were synthesized. The…”
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In vivo temporal EPR imaging of the brain of rats by using two types of blood-brain barrier-permeable nitroxide radicals by Yokoyama, Hidekastu, Itoh, Osamu, Aoyama, Masaaki, Obara, Heitaro, Ohya, Hiroaki, Kamada, Hitoshi

“…In vivo temporal EPR imaging was conducted on the brain of rats that received one of two kinds of blood-brain barrier-permeable nitroxide radicals via the tail…”
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Synthesis of Carthamin Acetate, the Red Pigment in Safflower Petals by Sato, Shingo, Kumazawa, Toshihiro, Watanabe, Hiroyuki, Takayanagi, Koji, Matsuba, Shigeru, Onodera, Jun-ichi, Obara, Heitaro, Furuhata, Kimio

“…Carthamin acetate,…”
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In vivo EPR imaging by using an acyl-protected hydroxylamine to analyze intracerebral oxidative stress in rats after epileptic seizures by Yokoyama, Hidekastu, Itoh, Osamu, Aoyama, Masaaki, Obara, Heitaro, Ohya, Hiroaki, Kamada, Hitoshi

“…EPR imaging by using an acyl-protected hydroxylamine, 1-acetoxy-3-carbamoyl-2,2,5,5-tetramethylpyrrolidine (ACP), in the head of a living rat after kainic acid…”
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Synthesis and enzyme-catalyzed hydrolysis of a radical-masked glycosylated spin-label reagent by Sato, Shingo, Nemoto, Miho, Kumazawa, Toshihiro, Matsuba, Shigeru, Onodera, Jun-ichi, Aoyama, Masaaki, Obara, Heitaro, Kamada, Hitoshi

“…[Display omitted] N 1-Acetoxy-2,2,6,6-tetramethylpiperidin-4-yl 2,3,4,6-tetra- O-benzyl-α- and -β- d-glucopyranosides ( 3-α, β) and N…”
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Sensitive ESR Determination of Intracellular Oxidative Stress by Using Acyl-Protected Hydroxylamines as New Spin Reagents by Itoh, Osamu, Aoyama, Masaaki, Yokoyama, Hidekatsu, Obara, Heitaro, Ohya, Hiroaki, Kamada, Hitoshi

“…Several acyl-protected hydroxylamines were synthesized as new spin reagents for ESR measurements of intracellular oxidative stress. These compounds were stable…”
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Temporal brain imaging by a rapid scan ESR-CT system in rats receiving intraperitoneal injection of a methyl ester nitroxide radical by Yokoyama, Hidekatsu, Itoh, Osamu, Ogata, Tateaki, Obara, Heitaro, Ohya-Nishiguchi, Hiroaki, Kamada, Hitoshi

“…We performed in vivo ESR-CT (electron spin resonance-computed tomography) on rats' heads, in which the blood-brain barrier-permeable nitroxide radical,…”
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Synthesis of (+),(−)-Model Compounds and Absolute Configuration of Carthamin; A Red Pigment in the Flower Petals of Safflower by Sato, Shingo, Obara, Heitaro, Kumazawa, Toshihiro, Onodera, Jun-ichi, Furuhata, Kimio

“…(+)- and (−)-Model compounds of a carthamin were synthesized. The absolute configuration of carthamin was deduced to be S, S by means of CD spectroscopy and…”
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Synthesis of a New Nitrone for Detection of Radical Species by Sato, Rikiya, Nakahashi, Kenichi, Iwadate, Hiroshi, Takeishi, Makoto, Igarashi, Takashi, Obara, Heitaro, Kamada, Hitoshi

“…A water-soluble new nitrone, α-(2-pyridyl) N-(2-hydroxy-1,1-dimethylethyl) nitrone, was synthesized and found to be useful for selective detection of…”
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Efficient synthesis of analogs of safflower yellow B, carthamin, and its precursor: two yellow and one red dimeric pigments in safflower petals by Sato, Shingo, Kusakari, Takashi, Suda, Tohru, Kasai, Takaharu, Kumazawa, Toshihiro, Onodera, Jun-ichi, Obara, Heitaro

“…The synthesis of analogs ( 8 , 12 , 14 ) of two yellow pigments, safflower yellow B and the precursor of carthamin, and carthamin itself, a red pigment, which…”
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Novel glycosylation of the nitroxyl radicals with peracetylated glycosyl fluorides using a combination of BF 3·OEt 2 and an amine base as promoters by Sato, Shingo, Kumazawa, Toshihiro, Matsuba, Shigeru, Onodera, Jun-ichi, Aoyama, Masaaki, Obara, Heitaro, Kamada, Hitoshi

“…Glycosylation of the nitroxyl radicals, 4-acetoxy-2,2,6,6-tetramethylpiperidin-1-oxyl (4-acetoxy-TEMPO) and 3-carbamoyl-2,2,5,5-tetramethylpyrollin-1-oxyl…”
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New sensitive agents for detecting singlet oxygen by electron spin resonance spectroscopy by Igarashi, Takashi, Sakurai, Kazuhisa, Oi, Tetsuo, Obara, Heitaro, Ohya, Hiroaki, Kamada, Hitoshi

“…Free radicals are well-established transient intermediates in chemical and biological processes. Singlet oxygen, though not a free radical, is also a fairly…”
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Novel glycosylation of the nitroxyl radicals with peracetylated glycosyl fluorides using a combination of BF3·OEt2 and an amine base as promoters by Sato, Shingo, Kumazawa, Toshihiro, Matsuba, Shigeru, Onodera, Jun-ichi, Aoyama, Masaaki, Obara, Heitaro, Kamada, Hitoshi

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Syntheses of 2,4,6-trihydroxy-, 2,4,6-trihydroxy-5-methyl- and 2,4,5,6-tetrahydroxy-substituted 3-(3-phenylpropionyl)benzaldehydes and their bactericidal activity by Sato, Shingo, Obara, Heitaro, Takeuchi, Hiroto, Tawaraya, Takashi, Endo, Akira, Onodera, Jun-Ichi

“…2,4,6-Trihydroxy-, 2,4,6-trihydroxy-5-methyl-, and 2,4,5,6-tetrahydroxy-substituted 3-(3-phenylpropionyl)benzaldehydes were efficiently synthesized. The first…”
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