共查询到17条相似文献,搜索用时 140 毫秒
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在多种双苄异喹啉类生物碱中,只有cissampareine亚类具有不常见的亚甲基氧桥。本文的作者在研究源于泰国防己科轮环藤属植物Cyclea atjehensis Forman时发现了两个新的cissampareine类生物碱:(+)cycleatjehenine(1a)和(+)cycleatjehine(6)都具有一个亚甲基氧桥。轮环藤属植物Cyclea atjehensis系在1987年1月从泰国某锡矿区收集的。将其干燥后的叶先用石油醚提取,然后再用乙醇提。将溶媒 相似文献
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粉防己化学成分氧化防己碱和防己菲碱的化学结构 总被引:1,自引:0,他引:1
从防已科植物粉防己(Stephania tetrandra S.Moore)的干燥块根中分离到五种结晶。其中三种鉴定为粉防己碱(tetrandrine,晶Ⅱ),防己诺林碱(fangehinoline,晶Ⅳ)和轮环藤酚碱(cyclanoline,晶Ⅴ)。晶Ⅰ和晶Ⅲ为新生物碱,其结构经光谱分析推定为Ⅰ和Ⅲ,结构Ⅱ已由X射线衍射实验证实,并分别命名为氧化防己碱(oxofangchirine)和防己菲碱(stephanthrine). 相似文献
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Standardization of herbal drugs based on their chemical and biological activity profile is an important prerequisite for acquiring the herbal market. The main problem encountered in standardization of Ayurvedic drugs is proper identification of the source plant. The present study was aimed to establish identification characters, quality control parameters, chemical and biological parameters for roots of three plants Cissampelos pareira, Cyclea peltata and Stephania japonica (Fam. Menispermaceae) which are being used as source of Patha, in the market. All the three plant were subjected for evaluation of quality control parameters as per WHO guidelines and root extracts and total alkaloidal fractions were subjected for HPTLC and HPLC fingerprinting analysis using a marker compound Bebeerine isolated from roots of Cissampelos pareira. The parameters studied clearly indicated the significant differences among the three plant materials. The roots of Cissampelos pareira can be distinguished from other two plants by presence of high concentration of alkaloids especially the presence of high concentration of pharmacologically active alkaloid bebeerine, which was found to be present in very low concentration in Stephania japonica and absent in roots of Cyclea peltata. The roots of Cyclea peltata were found to contain high concentration of saponins and comparatively in low concentration in Cissampelos pareira where as it was found to be absent in roots of Stephania japonica. 相似文献
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Magnoflorine and Protoquercitol as Contents of Cyclea barbata Miers Magnoflorine was isolated as the first quartenary aporphine alkaloid from Cyclea barbata Miers. Previously a seres of bisbenzylisoquinoline alkaloids and cyclanoline, belonging to the tetrahydroberberine group, were isolation of magnoflorine 相似文献
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大乌头及藤乌头类乌头的调查鉴定与成分分析 总被引:3,自引:0,他引:3
本文报道了民间药大乌头及藤乌头类乌头的植物来源,前者属于乌头属乌头亚属乌头组中的显柱乌头系(Ser Stylosa)类植物,后者系同组的蔓乌头系(Ser Volubulia)类植物,药用部分为其块根。 研究了生药中生物碱的高效液相色谱测定方法,用十八烷基键合相柱,以甲醇—水—三乙胺(75:25:0.2)作流动相,各生物碱均能基线分离。分析了属于这类乌头的十二种不同植物品种的生药块根,均含有滇乌碱类生物碱,从化学分类学上证明这两群乌头植物在亲缘关系上有较密切的联系。 相似文献
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本文报道了民间药大乌头及藤乌头类乌头的植物来源,前者属于乌头属乌头亚属乌头组中的显柱乌头系(Ser Stylosa)类植物,后者系同组的蔓乌头系(Ser Volubulia)类植物,药用部分为其块根。研究了生药中生物碱的高效液相色谱测定方法,用十八烷基键合相柱,以甲醇—水—三乙胺(75:25:0.2)作流动相,各生物碱均能基线分离。分析了属于这类乌头的十二种不同植物品种的生药块根,均含有滇乌碱类生物碱,从化学分类学上证明这两群乌头植物在亲缘关系上有较密切的联系。 相似文献
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Alkaloids from the Thai Drug “Krung Kha Mao” (Cyclea Barbata, Menispermaceae), V: Isolation and Structural Elucidation of Further Bisbenzylisoquinoline Alkaloids. From “Krung Kha Mao” (Cyclea barbata Miers) tetrandrine N-2′-monoxide ( 1 ) was isolated as a new alkaloid. Its structure was elucidated by spectroscopy and partial synthesis. Two other alkaloids were identified as isochondodendrine ( 2 ) and chondocurine ( 4 ). 相似文献