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81.
82.
The absolute structure of oleuropein was proved to be 1 through the chemical correlation of the glucoside with asperuloside of known absolute configuration. In connection with this experiment the absolute configurations of kingiside and morroniside were established as 4 and 5, respectively. 相似文献
83.
T Yamauchi Y Shoyama H Aramaki T Azuma I Nishioka 《Chemical & pharmaceutical bulletin》1967,15(7):1075-1076
84.
85.
Nishioka GM Markey AA Holloway CK 《Journal of the American Chemical Society》2004,126(50):16320-16321
Inkjet printing technology is used to synthesize microarrays consisting of a variety of compounds. In this communication, we characterize damage to a model enzyme, peroxidase, caused by the rapid compression experienced by the solution during the printing process. We also find that damage is mitigated by the addition of trehalose and glucose to the printed solution. 相似文献
86.
Nishioka T Kitayama H Breedlove BK Shiomi K Kinoshita I Isobe K 《Inorganic chemistry》2004,43(18):5688-5697
Reaction of trans-[(MCp)(2)(mu-CH(2))(2)Cl(2)] (M = Rh, Ir; Cp = eta(5)-C(5)Me(5)) with Li(2)S(2) afforded the disulfido complexes [(MCp)(2)(mu-CH(2))(2)(mu-S(2)-S:S')] which were easily oxidized by O(2) to give the oxygenated complexes [(MCp)(2)(mu-CH(2))(2)(mu-SSO(2)-S:S')]. Although [(RhCp)(2)(mu-CH(2))(2)(mu-S(2)-S:S')] gave a complicated mixture when reacted with CH(2)Cl(2) or CHCl(3), [(IrCp)(2)(mu-CH(2))(2)(mu-S(2)-S:S')] reacted with both CH(2)Cl(2) and CHCl(3) to give the dithioformato complex [(IrCp)(2)(mu-CH(2))(2)(mu-S(2)CH-S:S')]Cl and the cyclotetrasulfido complex [((IrCp)(2)(mu-CH(2))(2))(2)(mu-S(4)-S:S':S":S"')]Cl(2). The oxygenated complexes [(RhCp)(2)(mu-CH(2))(2)(mu-SSO(2)-S:S')] reacted with hydrocarbyl halides to afford bridging hydrocarbyl thiolato complexes accompanied by the generation of SO(2) gas. These complexes have been characterized by NMR spectroscopy, ESI-MS, and X-ray diffraction. 相似文献
87.
Tanaka R Yano T Nishioka T Nakajo K Breedlove BK Kimura K Kinoshita I Isobe K 《Chemical communications (Cambridge, England)》2002,(16):1686-1687
The novel thia-calix[n]pyridines (n = 3, 4, 6) coordinated to copper ions through nitrogen and sulfur atoms to give multinuclear complexes whose structures have been determined by X-ray crystallography and NMR spectra. 相似文献
88.
Tanaka T Nonaka GI Ishimatsu M Nishioka I Kouno I 《Chemical & pharmaceutical bulletin》2001,49(4):486-487
The structure of cercidinin A, an ellagitannin isolated from the bark of Cercidiphyllum japonicum, was revised to 1,2,6-tri-O-galloyl-3,4-(R)-hexahydroxydiphenoyl-beta-D-glucose by two-dimensional NMR spectral analysis. Cercidinin A represents the first ellagitannin possessing a hexahydroxydiphenoyl group at the 3,4-positions of a modified 4C1-glucopyranose core. 相似文献
89.
90.
Takayuki Watanabe Narengerile Hiroshi Nishioka 《Plasma Chemistry and Plasma Processing》2012,32(1):123-140
Decomposition of acetone, methanol, ethanol, and glycerine by water plasmas at atmospheric pressure has been investigated
using a direct current discharge. At torch powers of 910–1,050 W and organic compound concentrations of 1–10 mol%, the decomposition
rate of methanol and glycerine was over 99%, while those of acetone and ethanol was 95.4–99%. The concentrations of H2 obtained were 60–80% in the effluent gas for any compounds by pyrolysis. Based on the experimental results, the decomposition
mechanism of organic compounds in water plasmas was proposed and the roles of intermediate species such as CH, CH3, and OH have been investigated; CH radical generated from organic compounds decomposition was easily oxidized to form CO;
incomplete oxidation of CH3 leads to C2H2 generation as well as soot formation; and negligible amount of soot observed from glycerine decomposition even at high concentration
indicated that oxidation of CH×(×:1–3) was enhanced by OH radical. 相似文献