SteroidsIchii, S., Kobayashi, S., and Matsuba, M.: Studies on the side-chain cleavage of C,-steroids. Steroids 5 : 123-130, 1965.S. Ichii , S. Kobayashi , M. Matsuba . (1965) Studies on the side-chain cleavage of C21-steroids. Steroids 5 , 123-130 Online publication date: 1...
结合国内外相关文献,综述了近15年来萝藦科鹅绒藤属植物C21甾体类化学成分的研究进展,并对C21甾体苷化合物中糖单元的核磁共振谱学特征及其结构测定方法进行了小结。 2) C21 steroids C21甾体类化合物 3) C2 C2 1. Effect ofC2gene on humen gastric cancer cell cycle; ...
C21 steroids, as the typical constituents of Cynanchum species, possess a variety of structures and pharmacological activities. This review summarizes the comprehensive information on phytochemistry and pharmacology of C21 steroid constituents from Cynanchum plants, based on reports published between 2007 and...
又名类固醇化合物(steroids),因其结构中都具有环戊烷骈多氢菲的甾核,1936年给这类化合物定义为“甾体类化合物”,甾体很形象的表示了这类化合物的骨架,即在含有四个稠合环“田”字上面连有三个支链“<<<”。C10、C13上各有一个甲基,称为角甲基。C17位上有侧链。
THE CONFORMATIONS OF THE 20-KETO SIDE CHAIN OF C21-STEROIDSnot availabledoi:10.1139/v62-331S. Rakhit and , Ch. R. EngelCanadian Journal of ChemistryS. Rakhit and Ch. R. Engel, Can. J. Chem., 40 2163, 1962.S. Rakhit and Ch. R. Engel, Can. J. Chem., 40, 2163, 1962....
C21steroidsfromthestemsofMarsdeniatenacissima LEIYong-sheng,LIZhan-fin,YANGShen-shen,LIUZhi-lan,HUAHui-ming' (SchoolofTraditionalChineseMateriaMedica,ShenyangPharmaceuticalUniversity,Shenyang110016,China) Abstract;TostudytheC2,steroidsofthestemsofMarsdeniatenacissima(Roxb.)WightetAm, ...
The phytochemical investigations on this plant have revealed the presence of the cardenolide glycosides, doubly linked cardenolide glycosides, pregnane steroids and triterpenoids [1], [6], [7], but no C21 steroidal glycosides have been reported. In our chemical investigation of the A. curassavica...
To study the C_(21) steroids of the stems of Marsdenia tenacissima(Roxb. 为了研究通光散藤茎中的C21甾体类成分,采用不同的色谱方法对通光散藤茎乙醇提取物进行分离纯化,并用波谱学的方法鉴定化合物的结构。 2) C21 steroid C21甾体类 1.
C. J. W. BrooksWiley Subscription Services, Inc., A Wiley CompanyBiological Mass Spectrometry. HARVEY, D.J., MIDDLEDITCH, B.S., BROOKS, C.J.W. 1982. Mass spectra of the trimethylsilyl ethers of some 3β-hydroxy-delta-5-C 21 steroids. Biomedical Mass Spectrom. 9: 411–418....
Cynanchum panictdatum;Asclepiadaceae;C2I steroids;Chemical cons tituents 【Foundation Item】 This project was suppo rted by National Natural Science Foundation of China for Outstanding Youth(No.30325046) l 94 Chin J Nat Med May 2006 VoI.4 ...