Seven oleanene triterpenes were isolated from the roots of Potentilla discolor Bge and their structures were identified as 3-oxoolean-12-en-27-oic acid(1), gypsogenic acid(2), 3α-hydroxyolean-12-en-27-oic acid(3...Seven oleanene triterpenes were isolated from the roots of Potentilla discolor Bge and their structures were identified as 3-oxoolean-12-en-27-oic acid(1), gypsogenic acid(2), 3α-hydroxyolean-12-en-27-oic acid(3), 3β-hydroxyolean-12-en-27-oic acid(4), aceriphyllic acid A(5), aceriphyllic acid A methyl ester(6), and oleanolic acid(7). Compounds 1–7 inhibited protein tyrosine phosphatase 1B(PTP1B) activity, with IC50 values ranging from(7.5±0.5) to(22.7±0.5) μmol/L. Among the isolates, compounds 1, 2, 3 and 7 from the Potentilla discolor Bge were found to exhibit selective PTP1 B inhibitory activity.展开更多
Ten compounds were obtained from the 90% ethanol extract of whole plant of Potentilla discolor Bunge.On the basis of physicochemical properties and spectral data,these compounds are identified as follows: oleanolic ac...Ten compounds were obtained from the 90% ethanol extract of whole plant of Potentilla discolor Bunge.On the basis of physicochemical properties and spectral data,these compounds are identified as follows: oleanolic acid(Ⅰ),kaempferol-7-O-α-L-rhamnoside(Ⅱ),quercetin-7-O-α-L-rhamnoside(Ⅲ),2α,3α-dihydroxyolean-12-ene-28-acid(Ⅳ),brevifolin(Ⅴ),ellagic acid-3,3′-dimethyl ether-4-O-β-D-glucopyranoside(Ⅵ),ellagic acid-3-methyl ether-4′-O-α-rhamnopyranoside(Ⅶ),2α-hydroxy-betulinic acid(Ⅷ),sitosterol(Ⅸ) and daucosterol(Ⅹ).In which,compound Ⅱ,Ⅲ and Ⅴ are isolated from genus Potentilla L.for the first time,and compound Ⅳ is isolated from P.discolor for the first time.展开更多
基金Science and Technology Development Program of Jilin Province(Grant No.20150101225JC)
文摘Seven oleanene triterpenes were isolated from the roots of Potentilla discolor Bge and their structures were identified as 3-oxoolean-12-en-27-oic acid(1), gypsogenic acid(2), 3α-hydroxyolean-12-en-27-oic acid(3), 3β-hydroxyolean-12-en-27-oic acid(4), aceriphyllic acid A(5), aceriphyllic acid A methyl ester(6), and oleanolic acid(7). Compounds 1–7 inhibited protein tyrosine phosphatase 1B(PTP1B) activity, with IC50 values ranging from(7.5±0.5) to(22.7±0.5) μmol/L. Among the isolates, compounds 1, 2, 3 and 7 from the Potentilla discolor Bge were found to exhibit selective PTP1 B inhibitory activity.
文摘Ten compounds were obtained from the 90% ethanol extract of whole plant of Potentilla discolor Bunge.On the basis of physicochemical properties and spectral data,these compounds are identified as follows: oleanolic acid(Ⅰ),kaempferol-7-O-α-L-rhamnoside(Ⅱ),quercetin-7-O-α-L-rhamnoside(Ⅲ),2α,3α-dihydroxyolean-12-ene-28-acid(Ⅳ),brevifolin(Ⅴ),ellagic acid-3,3′-dimethyl ether-4-O-β-D-glucopyranoside(Ⅵ),ellagic acid-3-methyl ether-4′-O-α-rhamnopyranoside(Ⅶ),2α-hydroxy-betulinic acid(Ⅷ),sitosterol(Ⅸ) and daucosterol(Ⅹ).In which,compound Ⅱ,Ⅲ and Ⅴ are isolated from genus Potentilla L.for the first time,and compound Ⅳ is isolated from P.discolor for the first time.