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A New 24, 30-Dinortriterpenoid from Paeonia delavayi被引量：5
《Chinese Chemical Letters》2001年第4期345-346,共2页Shao Hua WU Xiao Dong LUO Yun Bao MA Xiao Jiang HAO Da Gang WU 
A new triterpenoid. 3 beta. 4 beta. 23-trihydroxy-24, 30-dinorolean-12. 20(29)-dien-28-oic acid. together with five known compounds. 2 alpha. 3 beta. 23-trihydroxy-12-oleanen-28-oic acid-beta -D-glucose glucopyranosyl...
关键词：Paeonia delavayi Franch. Paeoniaceae TRITERPENOID 3 beta 4 beta  23-trihydroxy-24  30-dinorolean-12 20(29)-dien-28-oic acid 
A New Ursene Type Triterpenoid from Crepis napifera被引量：3
《Chinese Chemical Letters》2000年第8期711-712,共2页Wu, SH Luo, XD Ma, YB Wu, DG 
A new triterpenoid, urs-20-en-3 beta-acetoxy-22 alpha-ol, and three known compounds 3 beta-acetoxy-amyrin, 3 beta-acetoxy-lupeol, lupeol were isolated from the leaves of Crepis napifera (Franch.) Babe. Their structure...
关键词：Crepis napifera (Franch.) Babc. COMPOSITAE TRITERPENOID urs-20-en-3 beta-acetoxy-22 alpha-ol 3 beta-acetoxy-amyrin 3 beta-acetoxy-lupeol LUPEOL 
Kinetic Study on Horseradish Peroxidase Interacting with Cyclodextrin
《Chinese Chemical Letters》2000年第8期721-724,共4页Chen, JB Xia, CG Ben Li, S 
The catalyst reactivity of Horseradish peroxidase was enhanced in the presence of beta-cyclodextrin. During this course, beta- cyclodextrin played a role of stabilizing the intermediates of HRP. The results have been ...
关键词：horseradish peroxidase beta- cyclodextrin COMPOUND KINETICS 
Stereoselective Synthesis of (Z)-2-Acylamido-4-phenylcrotonates
《Chinese Chemical Letters》2000年第7期567-570,共4页Yi Nong XIE Fan Min FU Ai Qiao MI Yao Zhong JIANG(Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences,Chengdu 610041) 
Two practical methods for highly stereoselective synthesis of (Z)-2-acylamido-4-phenylcrotonates 2a similar to b have been developed. The key step in the first route was how to control the acid-catalyzed isomerization...
关键词：(Z)-alpha beta-dehydroamino acids stereoselective synthesis E -> Z isomerization Fe/Ac2O reduction of oxime 
The Identification of Two New Sterols from Marine Organism被引量：3
《Chinese Chemical Letters》2000年第6期531-534,共4页Shi Hai XU Long Mei ZENG(Department of Chemistry, Jinan University Guanzhou 510632)(Department of Chemistry Zhongshan University Guanzhou 510275) 
Two new sterol have been isolated from the South China Sea marine organism. Compound 1 was isolated from the sponge Polymastia sobustia and compound 2 was obtained from the soft coral Sinularia inexplicata. Their stru...
关键词：sterol Polymastia sobustia 3 beta-hydroxy- stigmast-5en-7-one soft coral Sinularia inexplicita 24-methylene cholestan-3 beta  6 beta  9 alpha  19-tetrol 
Two New Sterols from Amoora yunnanensis
《Chinese Chemical Letters》2000年第6期535-538,共4页Xiao Dong LUO Shao Hua WU Yun Bao MA Da Gang WU(Laboratory of Phytochemistry ,Kunming Institute of Botany, The Chinese Academy of Sciences,Kunming 650204) 
Two new sterols. 3 beta,7 alpha, 16 beta-trihydroxy-stigmast-5,22-diene 1,3 beta,7 alpha,16 beta-trihydroxy-stigmast-5-ene 2. were isolated together with two known ergosterols, ergosta-5,24(28)-diene-3 beta.7 alpha-di...
关键词：Amoora yunnanensis (H. L. Li) C. Y. Wu Meliaceae 3 beta 7 alpha 16 beta-trihydroxy-stigmast-5.22-diene 3 beta 7 alpha 16 beta-trihydroxy-stigmast-5-ene 
Triterpenoids from Fuscoporia obliqua被引量：2
《Chinese Chemical Letters》2000年第1期45-48,共4页Jian HE Xiao zhang FENG Bin ZHAO Yang LU (Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College,1 Xian Nong Tan Street, Beijing 100050) 
Two new lanosta triterpenoids, 3 beta,22 a -dihydroxy-lanosta-8,24E-diene-25-peroxide 3 beta,22 a,25-trihydroxy lanosta-8,24E-diene were isolated from the petroleum ether extracts of Fuscoporia obliqua and their struc...
关键词：Fuscoporia obliqua POLYPORACEAE fungi triterpeneperoxide 3 beta 22 alpha-dihydroxy-lanosta-8 24E-ene-25-peroxide 3 beta 22 alpha 25-trihydroxy-lanosta-8 24E-diene 
New Triterpene Glycoside from Thalictrum smithii被引量：1
《Chinese Chemical Letters》1999年第6期485-486,共2页Yu, SC Wu, QL Wang, LW Xiao, PG 
A new triterpene glycoside, 24S-cycloartane-3 beta, 16 beta, 24, 25, 30-pentaol 3-O-(2-O-beta-D-xylosyl)-beta-D-xyloside was isolated from Thalictrum smithii. Its structure was determined by spectroscopic and chemical...
关键词：THALICTRUM Thalictrum smithii triterpene glycoside 24S-cycloartane-3 beta  16 beta  24 25 30-pentaol 3-O-(2-O-beta-D-xylosyl)-beta-D-xyloside 
A New Triterpenoid from Teucrium Integrifolium
《Chinese Chemical Letters》1998年第8期737-738,共2页Xing Liang CHEN Tian En WANG Bei JIANG Zhong Wen LIN Han Dong SUN(G.i.h.. Academy of Science, Guiyang 550001)(Department of Chemistry, Guizhou University, Guiyang 550025)(Laboratory of Phytochemistry, Kunming Institute of Botany,Chinese Academy of Sc 
A new ursane-type triterpene, 3 beta-hydroxy-urs-5(6)-en-28-oic acid 1, was isolated from the aerial parts of Teucrium integrifolium and characterized. The structure of this new compound was mainly established by 2D N...
关键词：Teucrium integrifolium LABIATAE ursane-type triterpenoid 3 beta-hydroxy-urs-5(6)-en-28-oic acid 
BETA－CORRECTION　SPECTROPHOTOMETR　DETERMINATION　OF　COPPER　ITS　CHELATE＇S　CHARACTERISTIC　PAPAMETERS　WITH　o－IODOBENZENEDIAZOAMINOBENZENE－p－AZOBENZENE
《Chinese Chemical Letters》1995年第12期1057-1058,共2页Peng Fei ZHANG and Hong Wen GAO (Department of Chemistry,Huaibei Coal Normal College, Huaibei 235000) (Huaibei Institute of Environment Science, Huaibei 235000) 
The current ligand, o-iodobenzenediazoaminobenzene-p-azobe nzene (OIDAA) was synthesized for determining sensitively trace amounts of copper in metals at pH 12. The extraction with chloroform in the presence of 2, 9-d...
关键词：ITS CHELATE BETA AZOBENZENE 
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