52286-59-6 = 52286-74-5 + 63223-86-9 + 80928-46-7 + 97744-96-2 + 174721-08-5 + 948046-19-3 + 80952-71-2 + 80952-72-3 + 181225-33-2 反应条件:1.1 Solvents: Ethanol,Water; 4 D,26 °C 标题:Microbial Transformation Of 20(S)-Protopanaxatriol-Type Saponins By Absidia Coerulea 作者:Chen,Guangtong; Et Al 参考文献:Journal Of Natural Products 日期:2007 卷标:70(7) 页码:1203-1206
人参皂甙re置于β-Glucosidase体系中,化学反应 1.0H,反应生成 人参皂苷 Rg2 参考文献:Biotransformation Of Ginsenosides Re And Rg1 Into Rg2 And Rh1 By Thermostable β-Glucosidase From Thermotoga Thermarum 标题:Biotransformation Of Ginsenosides Re And Rg1 Into Rg2 And Rh1 By Thermostable β-Glucosidase From Thermotoga Thermarum 摘要:从thermotoga Thermarum Dsm 5069T中重组的恒温β-葡萄糖苷酶具有高选择性,可分别催化人参皂苷re和rg1转化为药理活性更高的次人参皂苷rg2和rh1.在酶浓度为1.36 U/ml,温度为85°C,Ph为5.5的条件下,10 G/l人参皂苷re在60分钟内转化为8.02 G/l人参皂苷rg2,2 G/l人参皂苷rg1在60分钟内转化为1.56 G/l人参皂苷rh1.本文首次报道了高恒温β-葡萄糖苷酶生产人参皂苷 Rg2 和 Rh1 的过程. DOI:10.1007/s10600-017-2025-0
专利信息
专利号:CN-1515584-A 优先权日:2003-01-08 标 题 :Semi-synthesis method of 20(s)-ginsenoside Rg2
1: Fu W, Sui D, Yu X, Gou D, Zhou Y, Xu H. Protective effects of ginsenoside Rg2 against H2O2-induced injury and apoptosis in H9c2 cells. Int J Clin Exp Med. 2015 Nov 15;8(11):19938-47. eCollection 2015. 2: Du J, Cui CH, Park SC, Kim JK, Yu HS, Jin FX, Sun C, Kim SC, Im WT. Identification and characterization of a ginsenoside-transforming β-glucosidase from Pseudonocardia sp. Gsoil 1536 and its application for enhanced production of minor ginsenoside Rg2(S). PLoS One. 2014 Jun 9;9(6):e96914. doi: 10.1371/journal.pone.0096914. eCollection 2014. 3: Kang HJ, Huang YH, Lim HW, Shin D, Jang K, Lee Y, Kim K, Lim CJ. Stereospecificity of ginsenoside Rg2 epimers in the protective response against UV-B radiation-induced oxidative stress in human epidermal keratinocytes. J Photochem Photobiol B. 2016 Dec;165:232-239. doi: 10.1016/j.jphotobiol.2016.10.034. Epub 2016 Oct 29. doi: 10.4196/kjpp.2013.17.2.133. Epub 2013 Apr 10.
合成参考文献
参考文献:10.4268/cjcmm20110418 摘要:Liu D, Pu S, Qian S, Zhang J. [Chemical constituents of Chinese red ginseng]. Zhongguo Zhong Yao Za Zhi. 2011 Feb;36(4):462–4.