Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Akihiko Isobe"'
Publikováno v:
Applied Catalysis A: General. :395-401
Gas-phase hydration of ethene was carried out over Me(HPO4)2·nH2O (Me = Ge, Zr, Ti, and Sn) catalysts at atmospheric pressure. It was found that the catalysts prepared from Sn(HPO4)2·2H2O were highly active and selective for the title reaction. The
Publikováno v:
Chemical and Pharmaceutical Bulletin. 48:256-260
Structural features of fluorescent methoxycoumarins were examined from the viewpoint of substituent effect and ring structure in connection with intramolecular charge-transfer (ICT). The fluorescence of methoxy- coumarins depended primarily upon the
Autor:
Hideki Miyataka, Hitoshi Matsumoto, Hisao Kakegawa, Akihiko Isobe, Toshio Satoh, Mayumi Nishiki, Noriko Shigehara
Publikováno v:
Biological and Pharmaceutical Bulletin. 22:1202-1206
The photoproducts produced by irradiating 8-methoxypsoralen (8-MOP) in the presence of spermine (Spm) were fractionated using gel filtration chromatography (GFC) on a Sephadex G-25 column. As a result, two bands which were characterized by the effect
Autor:
Hideki Miyataka, Hitoshi Matsumoto, Akihiko Isobe, Mayumi Nishiki, Takunori Fujimoto, Toshio Satoh, Mitsuo Matsuka
Publikováno v:
Biological and Pharmaceutical Bulletin. 21:723-729
To establish a biological method for evaluating propolis and to reveal their anti-allergic action, the effects of the ethanol and water extracts (EA-ET and WA-WT, respectively) from Brazilian, Chinese and Japanese propolis on the histamine release in
Autor:
Takeshi Shinohara, Toshinobu Masuda, Mitsuru Irikura, Chiyomi Murata, Shujiro Goya, Akihiko Isobe, Akira Takadate
Publikováno v:
Analytical Sciences. 13:753-756
6, 7-Dimethoxycoumarins having various reactive groups such as bromoacetyl-, hydrazinocarbonyl- and chlorocarbonyl- groups at 3-position on coumarin ring were synthesized for the construction of a fluorescent derivatizing reagent-kit for carboxylic a
Autor:
Akihiko Isobe, Hisao Kakegawa, Hideki Miyataka, Noriko Shigehara, Toshio Satoh, Hitoshi Matsumoto
Publikováno v:
Biological and Pharmaceutical Bulletin. 16:576-578
To confirm the inflammatory activity of polymeric photoproducts (CPZ-polymers) of chlorpromazine (CPZ), which were obtained by gel filtration of a UV-pre-irradiated CPZ aqueous solution, the histamine release from rat peritoneal exudate cells was stu
Autor:
Chikako Haratake, Shujiro Goya, Mitsuru Irikura, Akihiko Isobe, Chiyomi Murata, Toshinobu Masuda, Akira Takadate
Publikováno v:
Analytical Sciences. 8:695-697
Autor:
Akihiko Isobe, Hitoshi Matsumoto
Publikováno v:
Chemical and Pharmaceutical Bulletin. 29:603-608
The emission spectra and the fluorescence quantum yields of psoralens were measured in various solvents. We found that these compounds show a large Stokes shift, which can be explained in terms of intermolecular charge transfer interaction between a
Publikováno v:
Nippon Eiyo Shokuryo Gakkaishi. 41:51-54
The inhibitory effect of pheophorbide on the mutagenicity of benzo (a) pyrene with or without light irradiation was studied. Without light irradiation, 250 μg pheophorbide reduced the mutagenicity of benzo (a) pyrene to about 90%. This inhibitory ef
Autor:
Shuichi Kimura, Akihiko Isobe
Publikováno v:
Eiyo To Shokuryo. 29:221-224