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1.
祁州漏芦中一个新的三萜皂甙 总被引:1,自引:0,他引:1
从祁州漏芦 (Rhaponticumuniflorum (L .)DC .)的根中分离得到 6个三萜皂甙 ( 1~ 6 ) ,其中化合物 3为一新的三萜皂甙 ,命名为unifloroside,其结构经 1D ,2D_NMR及化学方法鉴定为 3_O_α_L_arabinopyranosyl_urs_9( 11) ,12_dien_2 8_oicacidβ_D_glucopyranosylester。 相似文献
2.
从祁州漏芦(Rhaponticum uniflorum (L.) DC.)的根中分离得到6个三萜皂甙(1~6),其中化合物3为一新的三萜皂甙,命名为unifloroside,其结构经1D, 2D-NMR及化学方法鉴定为3-O-α-L-arabinopyranosyl-urs-9(11),12-dien-28-oic acid β-D-glucopyranosyl ester. 相似文献
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钟膜白头翁的一个新三萜皂甙 总被引:3,自引:0,他引:3
从钟膜白头翁(Pulsatilla campanella Fisch. ex Regel et Rilig)的根中分到1个新的三萜皂甙,命名为白头翁甙(pulsatiloside)D,其结构经光谱分析和化学方法证明为常春藤皂甙元-3-O-β-D-葡萄吡喃糖基(1→2)-β-D-半乳吡喃糖甙。 相似文献
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多花黄芪的三萜皂甙研究 总被引:1,自引:0,他引:1
豆科黄芪属(Astragalus)药用植物的三萜皂甙具有促进微循环和强心作用[1,2],临床上可明显改善心力衰竭病人的心功能。载入青海省新版药品标准[3]的黄芪属植物多花黄芪(AstragalusfloridusBenth.)其化学成分尚未见报道。为科学评价其质量,进一步扩大黄芪药源,作者对多花黄芪的化学成分进行了研究,从其干燥根中提取的总甙粗品部分,经硅胶柱层析和结晶纯化,分得5种三萜皂甙成分,通过光谱分析和化学方法,鉴定为绵毛黄芪甙(1)、黄芪皂甙(2)、黄芪皂甙(3)、绵毛黄芪甙(4)和膜荚黄芪甙(5)[4~7]。实 验 部 分熔点用4显微熔点测定仪测定,温度计… 相似文献
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黄花远志的新齐墩时烷型三萜皂甙 总被引:1,自引:1,他引:0
从云南产远志科药用植物黄花远志茎皮的乙醇提取物中何妨以4个新的齐墩果烷型三萜皂甙,人花远志皂甙A-D。同时还分离得到1个已知的三萜皂甙远志甙XXXV。它们的结构通过波谱方法推定。 相似文献
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从广东冬青(Ilex kwangtungensis)的叶中分离得到四个三萜皂甙和三个三萜成分,通过光谱解析及化学方法,三个三萜成分分别鉴定为齐墩果酸(1)、熊果酸(2)和常春藤皂甙元(3);四个三萜皂甙成分分别鉴定为齐墩果酸3-O-β-D-吡喃葡萄糖基-(1→3)-α-L-吡喃阿拉伯糖甙(4)、齐墩果酸3-O-β-D-吡喃葡萄糖基-(1→2)-α-L-吡喃阿拉伯糖甙(5)、齐墩果酸3-O-β-D- 相似文献
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从著名藏药白花刺参(Morina nepalensis var.alba Hand.-Mazz)的水溶性部分分离到2个新三萜皂甙-刺参甙K(1)和刺参甙L(2),以及一个已知三萜皂甙mazusaponinⅠ(3)。应用波谱和化学方法,刺参甙K和刺参甙L的结构分别鉴定为3-O-α-L-arabinopyranosyl-(1→)-β-D-xylopyranosyl siaresinolic acid(1)和3-O-β-D-glucopyranosyl-(1→3)-α-L-arabinopyranosyl siaresinolic acid28-O-β-D-glucopyranosyl-(1→6)-β-D-glucopyranoside(2)。 相似文献
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葫芦科植物三萜皂甙研究十年进展(1980—1992) 总被引:11,自引:1,他引:11
综述了2980年至1992年以来葫芦科盒子草属,土贝母属Cayaponia属,南瓜属,Fevillea属,纹股蓝属,雪胆属,丝瓜属,苦瓜属,棒锤瓜属,罗汉果属,赤bao属,Wilbradia等13属24种植物200多个三萜类新化合物的研究概况。其中值得注意的是五环三匝齐墩果烷型大环皂甙,四环三萜葫芦烷型甜味甙,非葫芦烷型三萜皂甙,达玛烷型皂甙和巴查烷型三萜皂甙的发现。文末附参考文献83篇。 相似文献
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柴胡皂甙p的结构鉴定 总被引:4,自引:0,他引:4
从小叶黑柴胡 Bupleurum smithii Wolff var.parvifolium 的根中分离得到 5个化合物 ~ .经化学和波谱方法鉴定 ,化合物 为 3β,1 6β,2 3,2 8-四羟基齐墩果 - 1 1 ,1 3 1 8 -二烯 - 3- O- β- D-吡喃葡萄糖基 1→ 6 - [β- D-吡喃葡萄糖基 1→ 2 ]- β- D-吡喃葡萄糖甙 ,为新化合物 ,命名为柴胡皂甙 p saikosaponin p .化合物 ~ 分别为已知化合物柴胡皂甙元 D 、柴胡皂甙 g 、柴胡次皂甙 H 和柴胡皂甙 b2 .它们均首次从小叶黑柴胡中获得 相似文献
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A new steroidal saponin, pingpeisaponin, was isolated from stem and leaf of Fritillaria ussuriensis Maxim by column chromatographic technique. On the basis of the IR, MS, 1H NMR and 13C NMR spectra of pingpei saponin, the structure has been established as 24α-hydroxyl diosgenin-3-O-α-L-rhomno-pyranosyl-(l-2)-β-D-glucopyranoside. 相似文献
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油茶皂素化学和物理特性及其开发利用研究 总被引:1,自引:0,他引:1
油茶皂素学名茶皂角甙,结构糖是由葡萄糖醛酸,阿拉伯糖,木糖及半乳糖组成,结构酸是由反(顺)白芷酸及醋酸组成。茶皂角甙是由结构相似5─7种三萜类皂甙元构成。油茶皂素的表面活性主要是结构一端为疏水的脂肪酸基团,另一端为结构糖,结构酸亲水基团,吸附和胶团化,使皂素可用来做乳化剂,洗涤剂,发泡剂,分散剂,润湿剂,洗发剂,清洗剂,柔软剂等。 相似文献
14.
ZHOU LIGANG GUANGZHI ZHENG SHILIN WANG FANYUAN GANKunming Institute of Botany Aeademia Sinica Kunming China 《Cell research》1991,(1)
This work provides some evidences for the saponinproduction of Panax notoginseng callus by using biologi-cally active,wall-related oligosaccharins.In anappropriate concentration,three kinds of oligosaccharinsstimulated saponin formation or callus growth.Theconcentration of DO,GO and CO for saponin productionof Panax notoginseng callus culture were 15ppm,15ppmaud 20ppm respectively by comparing saponin yield.Itwas very obvious for DO to increase saponin contentwhen the concentration was 10ppm,and for GO tostimulate callus growth when the concentration was20ppm.It would be a good way to produce saponin byusing oligosaccharins in large scale culture in thefuture. 相似文献
15.
Antimicrobial activity of saponin fractions of the leaves of Gymnema sylvestre and Eclipta prostrata
Venkatesan Gopiesh khanna Krishnan Kannabiran 《World journal of microbiology & biotechnology》2008,24(11):2737-2740
The antimicrobial activity of saponin fractions from the leaves of Gymnema sylvestre and Eclipta prostrata was evaluated against pathogenic bacteria and fungi in an in vitro condition. A series of concentrations of crude and pure
saponin fractions were tested for antimicrobial activity by zone of inhibition method. The pure saponin fractions were found
to be more effective against tested bacterial pathogens when compared to crude saponin fractions. The minimum inhibitory concentration
(MIC) exhibited by the pure saponin fraction of G. sylvestre was found to be in the range of 600–1,200 mg/l against bacterial strains and 1,400 mg/l for fungal isolates. In the case
of E. prostrata, the range was 1,000–1,200 mg/l for bacteria and 1,400 mg/l for fungal isolates. The susceptibility of bacterial pathogens
for saponin fractions was in the order of P. aeruginosa, E. coli, S. typhi, K. pneumoniae, P. mirablis, S. aureus and for fungal pathogens A. fumigatus followed by A. niger and A. flavus. Whereas, A. niger was more susceptible to inhibition by E. prostrata saponin fractions, followed by A. flavus and A. fumigatus. The antimicrobial potential of saponin fractions was compared with antibiotics, Chloramphenicol and Amphotericin-B with
respect to bacteria and fungi. The present study suggests that the saponin fractions G. sylvestre and E. prostrata possess significant antibacterial and antifungal activity. Our results further suggest that saponins of G. sylvestre and E. prostrata can be used as a potential fungicide against pathogenic fungi. 相似文献
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茶皂素对菜青虫的拒食作用方式及机制 总被引:17,自引:0,他引:17
采用注射、熏蒸、点滴、饲喂、内吸等方法测定了茶皂素对菜粉蝶Pieris rapae L.5龄幼虫的拒食活性。结果表明,茶皂素对5龄菜青虫具有很强的饲喂拒食活性,24小时选择性拒食中浓度AFC_(50)为40.88mg/L,非选择性拒食中浓度为321.92mg/L;并具有一定的内吸拒食作用,尤其是根部施药法内吸拒食活性较明显。茶皂素对菜青虫无显著的注射、熏蒸、点滴拒食作用。 相似文献
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无患子皂素是一种天然的表面活性剂,具有良好的乳化、分散、发泡、湿润等功效。采用超声波辅助法低水比无患子皂素提取优化工艺为:超声频率20 kHz,超声时间20 min,料液比1∶6,超声功率800 W,提取温度60℃,皂素提取得率为37.27%。超声波辅助法提取无患子皂素可以减少过程用水量,降低能耗,提高皂素得率。 相似文献
19.
Shimoyamada M Okada Y Watanabe K Yamauchi R 《Archives of biochemistry and biophysics》2005,435(2):273-279
Bovine milk alpha-lactalbumin (alpha-La) was mixed with soybean saponin, and the resulting mixture was hydrolyzed by trypsin. Saponin increased the tryptic-hydrolysis level of alpha-La only at relatively high phosphate buffer concentrations (> or = 0.05 M). T(1) experiments with acetylated soybean saponin demonstrated that there were some interactions between alpha-La and saponin not only at high concentrations of phosphate buffers but even at low concentrations as well. Circular dichroism spectra of alpha-La showed that the tertiary structure of alpha-La was changed through interactions with saponin only at high buffer concentrations. Furthermore, by analyzing the tryptic peptides from an alpha-La/saponin mixture, hydrolyzing rates at all or some of K5, R10, and K16 of alpha-La were accelerated by saponin interactions. The increase in the tryptic hydrolysis of alpha-La by saponin addition was considered due to modification of the tertiary structure of alpha-La by saponin. 相似文献
20.
The potential of natural surfactant tea saponin to enhance uptake of polychlorinated biphenyls (PCBs) and cadmium (Cd) by Zea Mays L. and Saccharum officinarum L. was investigated. With addition of tea saponin at 0.01% in solution culture, the concentrations of PCB 14, PCB 18, PCB 77 and PCB 156 in root of corn seedling were 2.72, 2.68, 1.94 and 2.40 times as those of treatments without adding any surfactant, respectively. Application of tea saponin to the soil significantly elevated PCB 5 accumulation in shoots and roots (p < 0.05) by sugarcanes. With addition of 0.3% tea saponin, Cd concentration was increased by 96.9% in roots, 156.8% in stems and 30.1% in leaves compared with the treatment without addition of surfactant in sugarcane grown in soil. Tea saponin had potential of assisting the uptake of PCBs and Cd by plants from water solution and soil. 相似文献