A pair of new enantiomeric furoquinoline alkaloids,(±)-zanthonitidine A(1),together with nine known ones(2-10)were isolated from the radix of Zanthoxylum nitidum.Their chemical structures were elucidated based on...A pair of new enantiomeric furoquinoline alkaloids,(±)-zanthonitidine A(1),together with nine known ones(2-10)were isolated from the radix of Zanthoxylum nitidum.Their chemical structures were elucidated based on the extensive spectroscopic analysis.The racemic mixture of 1 was separated by chiral column chromatography,and the absolute configurations of (+)-1 and(-)-1 were determined by the comparison of experimental and calculated electronic circular dichroism spectra.Antibacterial activities of compounds 1-9 were evaluated,and compounds(+)-1,(-)-1,3,7 and 8 showed antibacterial activities against Bacillus subtilis,Enterococcus faecalis or Staphylococcus aureus.展开更多
[Objectives]This study was conducted to improve the germination rate of Zanthoxylum nitidum(Roxb.)seeds and shorten the germination period.[Methods]Different germination beds,seed soaking temperatures,seed soaking tim...[Objectives]This study was conducted to improve the germination rate of Zanthoxylum nitidum(Roxb.)seeds and shorten the germination period.[Methods]Different germination beds,seed soaking temperatures,seed soaking time and culture temperatures were set to study the effects on seed germination of Z.nitidum.[Results]The germination rate on the filter paper germination bed was stable and it was easy for the control of humidity.The germination rate of seeds soaked in warm water at 50℃for 24 h was about 53.33%.The germination rate of seeds cultured at 25℃was as high as 91.98%.[Conclusions]This study provides a theoretical basis for seedling breeding and large-scale production of Z.nitidum.展开更多
基金supported by the National Natural Science Foundation of China(31470428,21702231)the National New Drug Innovation Major Project of China(2017ZX09309027)the Program for Jiangsu Province Innovative Research Team,the Fund for Introduction of High-level Talents from China Pharmaceu-tical University and the Fundamental Research Funds for the Central Universities(2632017PY19).
文摘A pair of new enantiomeric furoquinoline alkaloids,(±)-zanthonitidine A(1),together with nine known ones(2-10)were isolated from the radix of Zanthoxylum nitidum.Their chemical structures were elucidated based on the extensive spectroscopic analysis.The racemic mixture of 1 was separated by chiral column chromatography,and the absolute configurations of (+)-1 and(-)-1 were determined by the comparison of experimental and calculated electronic circular dichroism spectra.Antibacterial activities of compounds 1-9 were evaluated,and compounds(+)-1,(-)-1,3,7 and 8 showed antibacterial activities against Bacillus subtilis,Enterococcus faecalis or Staphylococcus aureus.
基金Supported by General Project of Guangxi Science and Technology Department(2020GXNSFAA259043)Guangxi First-class Discipline of Traditional Chinese Medicine(Guangxi Education Scientific Research No.12,2018)+1 种基金Guangxi University of Chinese Medicine Project(05018028F2)Guangxi Zhuang Yao Medicine Key Laboratory(GXZYZZ2020A-04).
文摘[Objectives]This study was conducted to improve the germination rate of Zanthoxylum nitidum(Roxb.)seeds and shorten the germination period.[Methods]Different germination beds,seed soaking temperatures,seed soaking time and culture temperatures were set to study the effects on seed germination of Z.nitidum.[Results]The germination rate on the filter paper germination bed was stable and it was easy for the control of humidity.The germination rate of seeds soaked in warm water at 50℃for 24 h was about 53.33%.The germination rate of seeds cultured at 25℃was as high as 91.98%.[Conclusions]This study provides a theoretical basis for seedling breeding and large-scale production of Z.nitidum.
文摘采用可视化分析的方式对广西特色药材两面针[Zanthoxylum nitidum(Roxb.)DC.]的研究进展和主要研究方向进行分析,预测该领域未来发展走向,以期为后续深入研究两面针提供理论参考。以“两面针”为检索词,从中国知网(CNKI)中整合1971—2022年的相关中文文献,运用CiteSpace V 5.7 R5软件从作者、机构、关键词等主题进行可视化分析。结果表明,筛选、排除与主题无关的文献后共纳入788篇文献,其中,发文量最多的作者是刘华钢,共发文65篇;发文较多的机构集中于广西,广西医科大学为研究两面针最多的机构,且有明显的地域性;高校与企业间合作较多,如广州中医药大学与华润三九医药股份有限公司等;关键词分析显示对两面针的研究主要集中在化学成分、药理作用及临床应用。结合高效液相色谱法对两面针及其相关中药复方以及产品的质量控制是研究热点。氯化两面针碱的抗肿瘤活性以及结合高效液相色谱法进行质量控制研究将是该领域的热门方向。
