- α-Glucosidic hydroquinone derivatives from Viburnum erosum
-
Six undescribed compounds (1–6) were isolated from the leaves of Viburnum erosum along with four known compounds 7–10. The structures were determined by NMR and MS spectroscopic analyses, and their absolute configurations were established by chemical and
- Choi, Seong Yeon,Jang, Hyeon Seok,Jeong, Birang,Kim, Juyeol,Kwon, Yong Soo,Lee, Jiho,Park, Jinyoung,Yang, Heejung
-
-
- New CuCl2-induced glucoside esters and other constituents from Portucala oleracea
-
Two new glucoside esters 1 and 2 were produced as stress metabolites in the fresh leaves of Portulaca oleracea, in response to abiotic stress elicitation by CuCl2. A new sugar ester (3) and two known compounds (4 and 5) were also isolated. Their structures were established by spectroscopic means. The antioxidative activities of stress metabolites and the related isolates were evaluated by DPPH assay. The results showed that new stress-driven adducts of monolignans and monoterpenes with a glucose bridge exhibited much stronger antioxidative activities than other compounds.
- Wu, Bin,Yu, Liyan,Wu, Xiaodan,Chen, Jianbo
-
body text
p. 68 - 73
(2012/04/11)
-
- Studies on the Constituents of Leguminous Plants. X. The Structures of New Triterpenoid Saponins from the Fruits of Gymnocladus chinensis BAILLON
-
Four new triterpenoid saponins, gymnocladus saponins F2 (1), F1 (2), E (3) and D1 (4), were isolated from the fruits of Gymnocladus chinensis BAILLON.On the basis of chemical and physicochemical evidence, they were characterized structurally as 3,28-bisglycosides of 2β,23-dihydroxyacacic acid having a glycosyl monoterpene carboxylate as an acyl moiety.
- Konoshima, Takao,Kozuka, Mutsuo,Kimura, Takeatsu
-
p. 1982 - 1990
(2007/10/02)
-