Immunological Activities of Components from Leaves of Liriodendron chinensis  

作　　者：Nian-yun Yang Liu-ying Wang Yi-wen Zhang 

机构地区：[1]Department of Pharmacognosy, Nanjing University of Chinese Medicine [2]Nanjing Hailing Pharmaceutical Co.,Ltd.,Yangtze River Pharmaceutical Group [3]The 306th Hospital of PLA

出　　处：《Chinese Herbal Medicines》2015年第3期279-282,共4页中草药（英文版）

基　　金：Priority academic program development of Jiangsu Higher Education Institutions(ysxk-2014)

摘　　要：Objectives To investigate the anti-inflammatory components from the leaves of Liriodendron chinensis. Methods The 95% alcohol extract from the leaves of L. chinensis was subjected to column chromatography, and the structures of purified compounds were determined by spectral methods. The bioassay was performed through the inhibitory effects on the inflammatory cells activated by lipopolysaccharide （LPS）. Results Nine compounds were isolated, including octacosanoic acid （1）, stearic acid （2）, （2R-2-hydroxy-N-[（2S,3S,4R,8E- l ,3,4-tri-hydroxyicos-8-en- 2-yl]tetracosanamide （3）, （2 R）- 2- hyd roxy- N- [（2 S, 3 S,4 R,8 E）- 1 - O-β- D-glucopyranosyloxy-3,4-dihydroxy- octadec-8-en-2-yl]eicosanamide （4）, （2R）-2-hydroxy-N-[（2S,3S,4R,8E）-l-O-β-D- glucopyranosyloxy-3,4-dihydroxyoctadec-8-en-2-yl]hexadecanamide （5）, dicentrinone （6）, liriodenine （7）, daucosterol （8）, and liriodendritol （9） and among which five compounds could significantly lower the content of nitric oxide （NO） from peritoneal macrophages of rats induced by LPS and reduce the splenic lymphocyte proliferation in mice. This is the first report on the occurrence of ceramides and dicentrinone in the plants of Liriodendron Linn. Conclusion The five compounds are likely to be anti-inflammatory compounds concerning to their pronounced inhibitory action on the activated inflammatory cells. This assessment might provide a basis for searching the potent active compounds used for the treatment of inflammation.Objectives To investigate the anti-inflammatory components from the leaves of Liriodendron chinensis. Methods The 95% alcohol extract from the leaves of L. chinensis was subjected to column chromatography, and the structures of purified compounds were determined by spectral methods. The bioassay was performed through the inhibitory effects on the inflammatory cells activated by lipopolysaccharide （LPS）. Results Nine compounds were isolated, including octacosanoic acid （1）, stearic acid （2）, （2R-2-hydroxy-N-[（2S,3S,4R,8E- l ,3,4-tri-hydroxyicos-8-en- 2-yl]tetracosanamide （3）, （2 R）- 2- hyd roxy- N- [（2 S, 3 S,4 R,8 E）- 1 - O-β- D-glucopyranosyloxy-3,4-dihydroxy- octadec-8-en-2-yl]eicosanamide （4）, （2R）-2-hydroxy-N-[（2S,3S,4R,8E）-l-O-β-D- glucopyranosyloxy-3,4-dihydroxyoctadec-8-en-2-yl]hexadecanamide （5）, dicentrinone （6）, liriodenine （7）, daucosterol （8）, and liriodendritol （9） and among which five compounds could significantly lower the content of nitric oxide （NO） from peritoneal macrophages of rats induced by LPS and reduce the splenic lymphocyte proliferation in mice. This is the first report on the occurrence of ceramides and dicentrinone in the plants of Liriodendron Linn. Conclusion The five compounds are likely to be anti-inflammatory compounds concerning to their pronounced inhibitory action on the activated inflammatory cells. This assessment might provide a basis for searching the potent active compounds used for the treatment of inflammation.

关 键 词：active constituents immunological activity Liriodendron chinensis 

分 类 号：R284[医药卫生—中药学]