New α-pyrrolidinonoids and glycosides from Euphorbia humifusa
Titel:
New α-pyrrolidinonoids and glycosides from Euphorbia humifusa
Auteur:
Deng, Fei Tang, Na Xu, Jun Shi, Yu-Hua Zhao, Ming Zhang, Jin-Sheng
Verschenen in:
Journal of Asian natural products research
Paginering:
Jaargang 10 (2008) nr. 6 pagina's 531-539
Jaar:
2008-06
Inhoud:
A phytochemical investigation on the constituents from Euphorbia humifusa Willd. has resulted in the isolation of three new α-pyrrolidinonoidal compounds, 5β-methoxy-4β-hydroxy-3-methylene-α-pyrrolidinone (1), 5β-methoxy-4α-hydroxy-3-methylene-α-pyrrolidinone (2), and 5β-butoxy-4α-hydroxy-3-methylene-α-pyrrolidinone (3), and three new glycosides including an indole glycoside, 3-(2-hydroxyethyl)-5-(1-O-β-glucopyranosyloxy)-indole (4), an ionone glycoside, 3-oxo-7,8-dihydro-α-ionone-11-O-β-glucoside (5), and a hemiterpene glycoside, 1-(4-hydroxy-2-methyl-2-buten-1-yl)-6- (3,4,5-trihydroxybenzoyl)-β-d-glucose (6), along with 10 known compounds. Their structures were elucidated by analysis of 1D and 2D NMR spectral data. The structure of 1 was further confirmed by a single-crystal X-ray diffraction analysis.