In addition ,nine new O,O-dialkyl-[α-(1,3,4,6-tetraacetyl-2-deoxy-β-D-glucoamino)-p-methyl benzlidene] phosphonatesand eight O,O-dialkyl-α-(2-deoxy-D-glucoamino)-p-methyl benzylidene phosphonates were prepared. The 〓 and〓 spectra of Ⅰ-Ⅴ compounds indicated clearly that each of Ⅰ-Ⅴ compounds contains two diastereo-isomers.

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Based on the problem of various types of catalyst and according to the features of carbonylation catalysts reactions, our team has been designed a series of new metal complexes of benimidazoles, which can be used for carbonylation catalyst of industry. Seven new benzimidazole derivatives were prepared by the o-phenylenediamine久久久久久久一线毛片、oxalic acid国产精品一线在线播放、glycolic acid、monomethyl monopotassium malonatewww.婷婷丁香五月.com、ethyl cyanoacetate国产专区自拍、succinic anhydride. The structures of them were confirmed by IR、Elemental analsis. The crystal structures of d and e were determined by X-ray single crystal diffraction of Germanic Bruker Smart APEX II CCD. The catalysis of them was tested by carbonylation reactions.

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0 D; X8 K富陽(yáng)論壇 Prof Bonthron, Dr Chris Bennett of the Yorkshire Regional Genetics Service and their colleagues studied a group of patients suffering from inherited primary hypertrophic osteoarthropathy, a genetic disorder in which the finger clubbing is accompanied by painful joint enlargement and a thickening of the bone.

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Guo L X. Studies on robotization to boom system of concrete pump car［D］.

郭立新国产三级国产精品专区。泵車布料機(jī)構(gòu)機(jī)器人化若干問(wèn)題的研究［D］。

RESULTS: A germacrane sesquiterpenoid, incaspitolide D (1), along with-N-benzoylphenylalanine--2-benzamido-3-phenyl- propyl ester (2), indole-3-carboxylic acid (3), apigenin (4), diosmetin (5) and luteolin (6) was isolated. CONCLUSION: Compounds 1-5 were isolated for the first time from Vernonia patula.

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A tomograph that constructs a 3-D model of an object by combining parallel planes.

通過(guò)聯(lián)合平行位面建立物體-d模型的斷層 x光攝影術(shù)。

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X-ray crystal structure analysis for complex 1 reveals that the copper ion is penta-coordinated by a D-and a L-diamine ligand, and two copper ions are bridge-connected by two cyanides from [Fe6](superscript 3-) in axial position.

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The results suggested that chitinhad a good solubility in the new solvent when its at -30℃and below, but the solubilityof chitin no longer increasesd notable as the temperature reduced; The joined of urea, incertain degree, strengthened the solvency of alkali solvent to chitin. When theconcentration of sodium hydroxide is 8%～12%, Chitin had a good solubility, and theapparent viscosity of chitin solution could up to 4000 mpa·s～5000mpa·s at roomtemperature; In addition,the solubility of chitin in new solvent was high when therefrigerated time was three days and above, but the refrigerated time could not too long,otherwise, the deacetylize degree of chitin got more bigger. The properties of chitin solution were tested by revolving viscosimeter, FT-IR,X-RD and so on.

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