(±)-5,2′-Dihydroxy-6,7,6′-trimethoxyflavanone, (-)-5,2′-dihydroxy-6,7,8,6′-tetramethoxyflavanone, chrysin, wogonin, apigenin, isoscutellarein, scutellarein, cosmosiin, and the new flavonoid wogonin-7-O-β-D-glucopyranoside, the structure of which was established using chemical transformations and spectral data, were isolated from Scutellaria immaculata roots.
DOI:
10.1007/s10600-005-0068-0
作为产物:
描述:
汉黄芩素 、 uridine-5'-diphosphoglucose 在
TcCGT1-C-glycosyltransferase from Trolliuschinensisuridine in complex with uridine diphosphate 作用下,
以
aq. phosphate buffer 、 二甲基亚砜 为溶剂,
以28.5%的产率得到5-hydroxy-8-methoxy-7-O-β-D-glucopyranosyloxyflavone
Identification and Characterization of Two New 1-<i>O</i>-Acyl-glucose-ester Forming Glucosyltransferases from <i>Erigeron breviscapus</i>
作者:Yan Yang、Minzhi Liu、Wenxuan Zhang、Yunsong Cao、Changkun Li、Wei Wang
DOI:10.1021/acs.jafc.8b07215
日期:2019.3.13
Two versatile UDP-glucosyltransferases, UGT75L25 and UGT75X1, were isolated from Erigeron breviscapus. The enzymes display high sequence identity to flavonoid 7-O-glucosyltransferase from Malus species and cluster to the phylogenetic group L of plant glucosyltransferases, also involved in the formation of hydroxycinnamoyl glucose esters, which are used as bifunctional donors in the glucosylation or