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Synthesis and Spectrophotometric Studies of 2-(5-Carboxy-1,3,4-triazolylazo)-5-diethylamino Aniline

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Chinese Chemical Letters 2000年第10期11卷 861-862页

作者： Pan, FY Ge, CH Liang, hd Taizhou Teachers Coll Dept Chem Zhejiang 317000 Peoples R China

In this paper, 2-(5-carboxy-1,3,4-triazolylazo)-5-diethylamino aniline(CTZAN) was prepared the protonation behaviour of this reagent is reported. Its structure was identified.

关键词： synthesis triazolylazo spectrophotometry protonation behaviour

A　NEW　APPROACH　TO　SYNTHESIZING　2－ALKOXYCARBONYL　－2－METHYL　ETHYL　TIN　TRICHLORIDES　AND　THEIR　COMPLEXES　WITH　DBSO　AND　HMPA

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Chinese Chemical Letters 1996年第2期7卷 105-106页

作者： Tian, LJ Fu, FX Pan, hd QUFU NORMAL UNIV DEPT CHEMQUFU 273165PEOPLES R CHINA NE NORMAL UNIV DEPT CHEMCHANGCHUN 130024PEOPLES R CHINA

A new approach based on transesterification reaction to synthesizing 2-alkoxycarbonyl-2 -methyl ethyl tin trichlorides and their complexes with dibenzylsulfoxide (DBSO) and hexamethylphosphoramide (HMPA )was reported. They were characterized by elemental analysis,IR and HNMR spectra. The possible mechanism for transesterifications was suggested.

关键词： HMPA DBSO WITH COMPLEXES AND ALKOXYCARBONYL

Long-range Correlations in Iodide Cluster Aggregates

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Journal of Materials Science & Technology 1997年第4期13卷 271-273页

作者： Zhang, JZ Yang, XD Li, hd Ye, XY TSING HUA UNIV DEPT CHEMBEIJING 100084PEOPLES R CHINA

The morphology of tin iodide deposits grown during gas-solid transformation demonstrated long-range correlations. These iodide deposits include basically two kinds of forms: fractal structure and dendritic-like structure. The fractal structure was a sort of tin iodide cluster aggregation. Each fractal structure was composed of numerous tin iodide clusters that connected or disconnected with each other. The average size of fractal structures is between 10 and 22 mu m. The dendritic-like structure was also composed of many tin iodide clusters. These clusters aggregated and formed a dendritic pattern.

关键词： Iodine compounds

Three New 6,7-Seco-Ent-Kaurane Diterpenoids from Isodon Eriocalyx

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Chinese Chemical Letters 1997年第5期8卷 421-424页

作者： Wang, J Lin, ZW Sun, hd ACAD SINICA KUNMING INST BOTLAB PHYTOCHEMKUNMING 650204PEOPLES R CHINA

From the dried leaves of I. eriocalyx, three new 6,7-seco- ent-kaurane diterpenoids epi-eriocalyxin A (2), maoecrystal N (3) and maoecrystal O (4) were isolated. Meanwhile, the structure of a known constituent eriocal... 详细信息

关键词： Wang Three New 6,7-Seco-Ent-Kaurane Diterpenoids from Isodon Eriocalyx

FOUR NEW TAXANES FROM THE ROOTS OF TAXUS YUNNANENSIS

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Chinese Chemical Letters 1995年第6期6卷 483-486页

作者： Zhang, HJ Sun, hd Takeda, Y Acad Sinica Kunming Inst Bot Phytochem Lab Kunming 650204 Peoples R China Univ Tokushima Fac Integrated Arts & Sci Tokushima 770 Japan

Four new taxanes were isolated from the roots of Taxus yunnanensis. Among them, two were determined to contain isobutyrate group and propionyloxy group on C-14 respectively, and one was determined as the least oxygena...

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A　NEW　METHOD　FOR　SYNTHESIZING　2-ALKOXYCARBONYLETHYLTIN　TRICHLORIDES　AND　THEIR　DIMETHYLSULFOXIDE　COMPLEXES

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Chinese Chemical Letters 1995年第9期6卷 805-806页

作者： Tian, LJ Fu, FX Pan, hd Qufu Normal Univ Dept Chem Quiu 273165 Peoples R China NE Normal Univ Dept Chem Changchun 130024 Peoples R China

Abstract: A new method based on transesterification reactions for synthesizing 2-alkoxycarbonylethyltin trichlorides(1) and their dimethylsuloxide complexes (2) was reported. 1 and 2 were characterized by elemental analysis,IR and VNMR spectra. The possible mechanism for their trans esterifications was suggested.

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Four New Compounds from Isodon Eriocalyx

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Chinese Chemical Letters 1997年第7期8卷 603-606页

作者： Wang, J Lin, ZW Shingu, T Sun, hd ACAD SINICA KUNMING INST BOTLAB PHYTOCHEMKUNMING 650204PEOPLES R CHINA KOBE GAKUIN UNIV FAC PHARMACEUT SCINISHI KUKOBEHYOGO 65121JAPAN

Four new diterpenoids named maoecrystal Q-T (1-4) were isolated from the dried leaves of Isodon eriocalyx. Their sturctures were established by spectroscopic methods.

关键词： Four New Compounds from Isodon Eriocalyx OCH

NOVEL TAXANES FROM TAXUS YUNNANENSIS

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Chinese Chemical Letters 1995年第6期6卷 479-482页

作者： Zhang, HJ Sun, hd Takeda, Y Acad Sinica Kunming Inst Bot Phytochem Lab Kunming 650204 Peoples R China Univ Tokushima Fac Integrated Arts & Sci Tokushima 770 Japan

Two new taxane diterpenoids from Taxus yunnanensis were elucidated by spectroscopic techniques, one of which was identified as a unique taxane with 2,20-oxo group.

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A NOVEL SPIRO-COMPOUND FROM CLERODENDRUM INDICUM

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Chinese Chemical Letters 1996年第3期7卷 279-282页

作者： Tian, J Zhao, QS Lin, ZW Sun, hd ACAD SINICA KUNMING INST BOTLAB PHYTOCHEMKUNMING 650204PEOPLES R CHINA

From the aerial parts of Clerodendrum indicum, a novel spiro-compound, named cleroindicin A, was isolated and identified as 7-hydroxy-1-oxy spiro[3,5] nonane, on the basis of chemical convertion and 2D NMR techniques.

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