共查询到18条相似文献,搜索用时 515 毫秒
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反相高效液相色谱法同时测定动物血浆中泰乐松注射液的多种组分 总被引:3,自引:0,他引:3
研究了用反相高效液相色谱法分析动物血中泰乐松注射液中三种组分氯霉素、醋酸氢化泼尼松和酒石酸泰乐菌素浓度的方法,,血药由甲醇-氯仿混合液提取,采用ODS柱,以甲醇-腈-醋酸钠溶液为流动相,可变波长检测。 相似文献
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In?vitro antifungal activity and phytochemical constituents of essential oil, aqueous, methanol and chloroform extract of Eucalyptus citriodora Hook leaves were investigated. A qualitative phytochemical analysis was performed for the detection of alkaloids, cardiac glycosides, flavonoids, saponins, sterols, tannins and phenols. Methanolic extract holds all identified biochemical constituents except for the tannin. While these biochemical constituents were found to be absent in essential oil, aqueous and chloroform extracts with the exception of sterols, cardiac glycosides and phenols in essential oil and sterols and phenols in aqueous and chloroform extracts. Antimycotic activity of four fractions of E. citriodora was investigated through agar-well diffusion method against four post-harvest fungi, namely, Aspergillus flavus Link ex Gray, Aspergillus fumigatus Fres., Aspergillus nidulans Eidam ex Win and Aspergillus terreus Thom. The results revealed maximum fungal growth inhibition by methanolic extract (14.5%) followed by essential oil (12.9%), chloroform extract (10.15%) and aqueous extract (10%). 相似文献
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A New Ceramide from the Soft Coral Cladiella humesi Verseveldt 总被引:2,自引:0,他引:2
Ming Yan WANG Yi LUO Jing Yu SU Department of Chemistry Zhongshan University Guangzhou 《中国化学快报》2000,11(9)
Ceramides are increasingly becoming important compounds because of their markedbiological activity. The 2000 International Gordon Research Conference on "Glycolipidand Sphingolipid Biology" will be held in May in italy. It has been recently found thatceramides inhibit Cholesteryl Ester Transfer Protein (CETP)'. Elevation in CETP leadsto atherosclerotic cardiovascular diseases2. A literature survey showed that ceramideswere antifungal', and some of these showed antimicrobial and cytotox… 相似文献
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Two new O‐bearing 4‐methylidene sterols, 9α‐hydroxy‐15‐oxoconicasterol ( 1 ) and 8β‐hydroxy‐B‐norconicasta‐6α‐aldehyde ( 2 ), were isolated from the EtOH extract of the marine sponge Theonella swinhoei collected from the South China Sea. Their structures were elucidated by spectroscopic data and comparison with known compounds. In addition, spectroscopic data reported for the known 4‐methylidene sterol 7α‐hydroxyconicasterol ( 3 ) were revised. 相似文献
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肉芝软珊瑚Sarcophyton crassocaule中新的多羟基甾醇的分离 总被引:1,自引:0,他引:1
报道了从三亚海域的一种肉芝软珊瑚Sarcophyton crassocaule Mosre中分离得到2个多羟基甾醇1和2. 通过波谱分析等方法测定了它们的化学结构, 化合物1为新化合物, 命名为Sarcrasterol. 化合物2为已知物[24ξ-methyl-colestane-3β,5β,6α,25-tetrol], 但其C24构型未确定, 通过X射线单晶衍射分析测定了其相对构型为24S. 相似文献
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The new phytosphingosine‐type ceramide 1 , named paxillamide (=2,3‐dihydroxy‐N‐[(1S,2S,3R)‐2,3‐dihydroxy‐1‐(hydroxymethyl)heptadecyl]tetracosanamide), was isolated from the CHCl3/MeOH extract of the fruiting bodies of the Basidiomycete Paxillus panuoides, and its structure was elucidated by spectroscopic and chemical methods. 相似文献
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A. A. Kolesnik T. A. Kakhniashvili Yu. L. Zherebin V. N. Golubev L. N. Pilipenko 《Chemistry of Natural Compounds》1986,22(4):394-397
By chromatographic methods, about 30 groups of various lipid compounds belonging to the classes of neutral lipids, glycolipids, and phospholipids have been identified from the fruit of the fig tree. The main groups are triacylglycerols, free and esterified sterols, mono- and digalactosyldiglycerides, ceramide oligosides, cerebrosides, esterified sterol glycosides, and phosphatidylglycerols. In the fatty acid composition, linoleic, linolenic, oleic, and palmitic acids predominated (>90%). 相似文献