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Synthesis of Pyridylazo-substituted Chromogenic Calix[4]arenes

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Chinese Chemical Letters 2001年第11期12卷 959-960页

作者： Jin, CM Lu, GY You, XZ Nanjing Univ State Key Lab Coordinat Chem Dept Chem Nanjing 210093 Peoples R China

This letter reports a novel method for preparing chromogenic calix[4]arenes, in which the 4-aminopyridine was diazotized with isoamyl nitrite in EtONa/EtOH, and mono(azo)-, bis(azo)- and tetra(azo)-substituted calix[4]arenes were obtained as main product respectively by diazo-coupling in different molar ratio to calix[4]arene in non-aqueous solution at 0-5 degrees.

关键词： chromogenic calixarene diazo-coupling isoamyl nitrite aminopyridine

First Total Synthesis of Four Benzodioxane Neolignans

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Chinese Chemical Letters 2000年第10期11卷 875-878页

作者： Jing, XB Gu, WX Bie, PY Ren, XF Pan, XF Lanzhou Univ Dept Chem Natl Lab Appl Organ Chem Lanzhou 730000 Peoples R China

Four 1,4-benzodioxane neolignans were first synthesized from pyrogallol, in which the Claisen rearrangement was used to afford three important C-6-C-3 units.

关键词： synthesis neolignans Eusiderin K Eusiderin J Eusiderin E Eusiderin F

Synthesis　and　Diffuse　Reflectance　Spectrum　of　Open－framework　Cobalt　Phosphate　DAF－2　From　Alcoholic　System

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Chemical Research in Chinese Universities 1996年第4期12卷 390-392页

作者： YU Ji-hong CHEN Jie-sheng and XU Ru-ren(Key laboratory of Inorganic Hydrothermal Synthesis,Department of Chemistry,Jilin University,Changchun,130023) JILIN UNIV DEPT CHEMKEY LAB INORGAN HYDROTHERMAL SYNTHCHANGCHUN 130023PEOPLES R CHINA

ＳｙｎｔｈｅｓｉｓａｎｄＤｉｆｆｕｓｅＲｅｆｌｅｃｔａｎｃｅＳｐｅｃｔｒｕｍｏｆＯｐｅｎ－ｆｒａｍｅｗｏｒｋＣｏｂａｌｔＰｈｏｓｐｈａｔｅＤＡＦ－２ＦｒｏｍＡｌｃｏｈｏｌｉｃＳｙｓｔｅｍＹＵＪｉ－ｈｏｎｇ；ＣＨＥＮＪ... 详细信息

ＳｙｎｔｈｅｓｉｓａｎｄＤｉｆｆｕｓｅＲｅｆｌｅｃｔａｎｃｅＳｐｅｃｔｒｕｍｏｆＯｐｅｎ－ｆｒａｍｅｗｏｒｋＣｏｂａｌｔＰｈｏｓｐｈａｔｅＤＡＦ－２ＦｒｏｍＡｌｃｏｈｏｌｉｃＳｙｓｔｅｍＹＵＪｉ－ｈｏｎｇ；ＣＨＥＮＪｉｅ－ｓｈｅｎｇａｎｄＸＵＲｕ－ｒ...

关键词： s:Synthesis Cobalt phosphate Alcoholic system Diffuse reflectance Spectroscopy

An Enzyme Electrode Based on the Covalently Binding of Horseradish Peroxidase to a Self-assembling Monolayer Modified Gold Electrode

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Chinese Chemical Letters 1998年第2期9卷 157-160页

作者： Sun, JJ Xu, JJ Fang, HQ Chen, HY Nanjing Univ State Key Lab Coordinat Chem Dept Chem Nanjing 210093 Peoples R China

A new procedure for developing high performance enzyme electrode is described. The procedure is based on the covalently binding of horseradish peroxidase to a self-assembling monolayer on a gold electrode. An enhanced catalytic current is observed with addition of hydrogen peroxide into phosphate buffer solution (PBS) in the presence of mediators. The electrode exhibits high sensitivity and a wide linear range to hydrogen peroxide.

关键词： high performance enzyme electrode high sensitivity wide linear range

STUDIES ON THE SYNTHESES OF FAVELINES

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Chinese Chemical Letters 1996年第2期7卷 107-108页

作者： Lin, G Wang, XC Pan, XF LANZHOU UNIV NATL LAB APPL ORGAN CHEMDEPT CHEMLANZHOU 730000PEOPLES R CHINA

A novel and efficient convergent synthesis of 13-demethyldeoxofaveline. a key intermediate for deoxofaveline, faveline and faveline methyl ether, was achieved by Wittig reaction and selective oxidation. And a novel si... 详细信息

关键词： BENZOCYCLOHEPTENES (+/-)-BARBATUSOL

A New Lignan Glucoside from Lancea tibetica

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Chinese Chemical Letters 1999年第1期10卷 37-38页

作者： Su, BN Yuan, CS Jia, ZJ Lanzhou Univ Natl Lab Appl Organ Chem Dept Chem Lanzhou 730000 Peoples R China

A new 7-9'-monoepoxy tetrahydrofuran type lignan glucoside with the cis-relationship of H-7 and H-8, named tibeticoside A 1, was isolated from the medicinal whole plants of Lancea tibetica. Its structure was elucidate... 详细信息

关键词： Lancea tibetica scrophulariaceae tibeticoside A

The Novel Selective Reduction of the C-C Triple Bond

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Chinese Chemical Letters 2000年第10期11卷 847-848页

作者： Gu, WX Wu, AX Pan, XF Lanzhou Univ Natl Lab Appl Organ Chem Dept Chem Lanzhou 730000 Peoples R China

A novel reduction system is reported here in which the compounds with terminal C-C triple bond and disubstituted C-C triple bond react with NaBH4/Pd(PPh3)(4) in a base condition and only terminal C-C triple bond is re... 详细信息

关键词： selective reduction C-C triple bond Pd(PPh3)(4)

A New Nor-neolignan from Cremanthodium ellisii

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Chinese Chemical Letters 1999年第2期10卷 129-130页

作者： Su, BN Zhu, QX Jia, ZJ Lanzhou Univ Dept Chem Natl Lab Appl Organ Chem Lanzhou 730000 Peoples R China

A new nor-neolignan, named ellisinin A (1), has been isolated from the traditional Tibetan medicinal plants of Cremanthodium ellisii. Its structure has been determined on the basis of spectroscopic evidence, especiall... 详细信息

关键词： Cremanthodium ellisii compositae nor-neolignan ellisinin A

A New Benzofuranosesquiterpene Dimer from Ligularia Virgaurea

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Chinese Chemical Letters 1997年第4期8卷 315-316页

作者： Wang, BG Jia, ZJ LANZHOU UNIV DEPT CHEMNATL LAB APPL ORGAN CHEMLANZHOU 730000PEOPLES R CHINA

A new benzofuranosesquiterpene dimer, named virgaurin B, has been isolated from the roots of Ligularia virgaurea and its structure has been elucidated by spectroscopic evidence.

关键词： Chen A New Benzofuranosesquiterpene Dimer from Ligularia Virgaurea