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71.
Hiroyuki Takemura Masahiko Suenaga Kiyoshi Sakai Hisao Kawachi Teruo Shinmyozu Yuji Miyahara Takahiko Inazu 《Journal of inclusion phenomena and macrocyclic chemistry》1984,2(1-2):207-214
(Aza)n[3n]cyclophanes were synthesized by the coupling reaction of p-toluenesulfonamide and bis(halomethyl) derivatives in the presence of a base (K2CO3, NaH etc.) using DMF, dioxane etc. as a solvent, in acceptable yields. Tetraaza macrocyclic compound (the dimer in Fig. 1) obtained by the coupling of 2,11-diaza[3.3]metacyclophane with 1,3-bis(bromomethyl)benzene gavea 1:1 adduct with benzene.Presented partly at the 42nd Autumn Annual Meeting of the Chemical Society of Japan, Sendai, September, 1980; Abstr. No. 1J17. 相似文献
72.
C. Mori T. Suzuki S. Koido A. Uritani H. Miyahara K. Yanagida Y. Wu K. Nishizawa M. Yoshida F. Takahashi J. Miyahara 《Journal of Radioanalytical and Nuclear Chemistry》1996,206(2):263-267
Distribution images of natural radioactivity in natural materials such as vegetables were obtained by using Imaging Plate. In such cases, it is necessary to reduce background radiation intensity by one order or more. Graded shielding is very important. Especially, the innermost surface of a shielding box should be covered with acrylic resin plate. We obtained natural radioactivity distribution images of vegetables, sea food, meat etc. Mostly -rays emitted from40K print the radioactivity distribution image. Comparison between -ray intensity of KCl solution measured with HPGe detector and that of natural material specimen gave the radioactivity around 0.060.4 Bq/g depending on the kind and the part of specimens. 相似文献
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Y Ohmomo K Murakami M Hirata A Sugimoto Y Magata N Miyahara C Tanaka A Yokoyama 《Chemical & pharmaceutical bulletin》1992,40(7):1789-1792
A new series of iodinated analogues of N-(2-aminoethyl)benzamide was synthesized and evaluated for inhibitory potency and specificity toward monoamine oxidase type-B (MAO-B). Among them, N-(2-aminoethyl)-2-chloro-4-iodobenzamide hydrochloride (2d) showed high inhibitory potency and selectivity against MAO-B. The type of MAO-B inhibition by 2d was non-competitive and the inhibition constant (Ki) was 0.80 microM. Strong and selective in vivo MAO-B inhibition by 2d was also confirmed. The brain MAO-B inhibition by 2d was reversible and the enzyme activity completely returned to the control value 24 h after administration. Compound 2d was, therefore, considered to be a candidate for advanced development as a radioiodinated ligand that may be useful for functional MAO-B studies in the living brain using single photon emission computer tomography. 相似文献
76.
Akio Kazusaka Tsunao Watanabe Koshiro Miyahara ken-ichi Tanaka Kozo Tanabe 《Chemical physics letters》1977,50(3):491-493
Two novel Mo5+ ions, different from either the D2d symmetry Mo5+ on anatase or the D2hMo5+ on rutile, appeared on partially reduced molybdenum oxide supported on -titanic acid. The oxygen molecule is held on one of these novel Mo5+ ions but is not reduced to the superoxide ion. Oxygen is reduced to O−2 entirely by the Mo4+ ion formed from the D2d symmetry ion and the O−2 is subsequently stabilized after moving to a Ti4+-site. 相似文献
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