Steroids, chromone and coumarins from angelica officinalis
作者:S. Harkar、T.K. Razdan、E.S. Waight
DOI:10.1016/s0031-9422(00)80344-1
日期:1984.1
Abstract From the ethyl acetate extract of the fresh roots of Angelica officinalis var. himaliaca , besides sitosterol, pregnenolone, peucenin-7-methyl ether, osthol and 18 furanocoumarins have been characterized by spectroscopic methods, including 13 C NMR, and some chemical transformations.
Abstract The isolation and characterisation ofchromones and coumarins, including the new chromone, skimminin, from S. laureola is reported.
摘要 报道了来自 S. laureola 的色酮和香豆素的分离和表征,包括新的色酮脱脂素。
Two <i>O</i>-Methyltransferases Mediate Multiple Methylation Steps in the Biosynthesis of Coumarins in <i>Cnidium monnieri</i>
作者:Yanchen Zhang、Penggang Bai、Yibin Zhuang、Tao Liu
DOI:10.1021/acs.jnatprod.2c00410
日期:2022.8.26
widely unknown. Herein, we report the discovery of two methyltransferases in the biosynthesis of O-methyl coumarins in Cnidium monnieri by transcriptome mining, heterologous expression, and in vitro enzymatic assays. The results reveal that (i) CmOMT1 catalyzes the methylation of osthenol (8) as the final step in the biosynthesis of 1, (ii) CmOMT2 shows the highest efficiency and preference for methylating