Four new triterpenoids from the bark of Euonymus alatus forma ciliato-dentatus

Publication date: June 2019Source: Phytochemistry Letters, Volume 31Author(s): Hiroshi Yamashita, Madoka Matsuzaki, Yuria Kurokawa, Takahisa Nakane, Masuo Goto, Kuo-Hsiung Lee, Toshiro Shibata, Hideo Bando, Koji WadaAbstractFour novel lupane-type lupane-type triterpenoids (including three norlupane-type triterpenoids), 17β-hydroxy-28-norlup-20(29)-en-3-one (1), 3β,17β–dihydroxy-28,30-bisnorlupan-20-one (2), 3β-hydroxy-20-oxo-30-norlupan-28-al (3) and lup-20(29)-ene-3,23,30-triol (4), were isolated together with ten known lupane triterpenoids (5˜14) from the bark of Euonymus alatus forma ciliato-dentatus. Their structures were determined from 1D- and 2D-NMR analysis and comparison of their spectroscopic data with literature values. The known compounds (5˜14) were reported for the first time from this plant.Graphical abstractFour previously undescribed lupane-type triterpenoids (1–4) were isolated together with ten known triterpenoids from the bark of Euonymus alatus forma ciliato-dentatus.

Source: Phytochemistry Letters - April 8, 2019 Category: Chemistry Source Type: research