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Physicochemical Characterization of Veronicafolin‐β‐cyclodextrin and Solubility Enhancement of Veronicafolin‐HP‐β‐cyclodextrin Inclusion Compound
- Yang Yun-shang, Zhang Ying-peng, Yang Ai-mei, L. Run-hua, Shi Yan-ping, S. Gao-feng
- Chemistry
- 1 June 2005
Inclusion complexation between veronicafolin, 3,5,4'-trihydroxy-6,7,3'-trimethoxyflavone, and beta-cyclodextrin (beta-CD) was investigated by using H-1 NMR, IR, X-ray diffraction, thermo gravimetric…
RP-HPLC Determination of Two Flavonols from Tibetan Medicine Chrysosplenium nudicaule Bunge
- Yang Yun-shang, S. Gao-feng
- Chemistry
- 2005
Objective:To develop an RP-HPLC method for the determination of two flavonols [5,4′-dihydroxy- 3,6,3′-trimethoxy-flavone-7-O-β-D-glucoside (flavonol 1) and veronieafolin (flavonol 2)]from Tibetan…
Advances in Studies on Chemical Constituents and Structure-Activity of Chrysosplenium
- Yang Yun-shang
- Chemistry
- 2005
In order to further investigate the chemical constituents in Chrysosplenium and offer value connection between activities and the components,the chemical constitution isolated from…
The Synthesis of Bichalcone Rhuschalcone I
- Zhang Ying-peng, Chen Yu-Shou, Yang Yun-shang, G. Xiao
- Chemistry
- 7 January 2011
Rhuschalcone Ⅰ was adopted to two synthetic fragments,compound 8 and compound 10,then the two fragments were combined together.Rhuschalcone Ⅰ were first synthesized by selective…
Studies on chemical constituents of essential oil from Swertia chirayita
- S. Gao-feng, L. Run-hua, Yang Yun-shang
- Chemistry
- 2004
The essential oil from Swertia chirayita was extracted by steam distillation. The chemical constituents were isolated, and were identified by capillary GC-MS method. 63 compounds from the oil were…
Synthesis of Novel Pyridyl-pyrazole-5-carboxylic Acid Amide Compounds
- Zheng Yi, Yuan Jun-fang, Zhang Ying-peng, Yang Yun-shang
- Chemistry
- 23 June 2010
The extraction procedure of chlorophyll from Buxus microphylla and the application
- Yang Yun-shang
- Chemistry
- 2007
The influences of the factors such as temperature,time,extractant ratio(ethanol∶acetone) etc.on the extraction efficiency of chlorophyll from Buxus microphylla were investigated by orthogonal…
Synthesis of Novel 3-Chloro-1-(3-chloro-2-pyridinyl)-1H-pyrazole-5-carboxamide Compounds
- Yang Yun-shang
- Chemistry
- 2010
3-Chloro-1-(3-chloro-2-pyridinyl)-1H-pyrazole-5-formic acid(6)was prepared by hydra-zinolysis of 2,3-dichloropyridine,cyclization with diethyl maleate,and then through chlorination,oxidation and…
Decolorization condition of eriochrome blue-black R by immobilized fungal laccase
- Yang Yun-shang
- Chemistry
- 2011
TLDR
ADVANCES IN STUDIES ON PHOSPHATIDE'S FUNCTION AND PURIFYING METHOD
- Yang Yun-shang
- Biology
- 2007
The paper mainly deals with the phosphatide's structure, classify, function and separating and purifying method, as well as its application.
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