-
[show abstract]
[hide abstract]
ABSTRACT: A new norlignan glycoside, named iso-agatharesinoside (2), and its aglycone, iso-agatharesinol (1), were isolated from the tuberous roots of Asparagus cochinchinensis. Their structures were established on the basis of spectral data, particularly by the use of 1D NMR and several 2D shift-correlated NMR pulse sequences (1H-1H COSY, HSQC, HMBC and ROESY).
Natural product communications 10/2012; 7(10):1357-8. · 1.24 Impact Factor
-
[show abstract]
[hide abstract]
ABSTRACT: The phytochemical investigation of extracts from the root barks of Lycium chinense yielded a new furolactone-type lignan, lyciumin (1). Its structure and absolute configurations were established on the basis of spectral data, particularly by the use of 1D NMR, 2D shift-correlated NMR pulse sequences ((1)H-(1)H COSY, HSQC, HMBC and ROESY) and CD spectra.
Natural product research 06/2012; · 1.01 Impact Factor
-
[show abstract]
[hide abstract]
ABSTRACT: The phytochemical investigation of extracts from the radix of Angelica sinensis yielded a new phthalide dimer, 3,3'Z-6.7',7.6'-diligustilide (1), along with a known dimer, levistolide A (2). Their structures were established on the basis of spectral data, particularly using 1D-NMR and several 2D shift-correlated NMR pulse sequences ((1)H-(1)H COSY, HSQC, HMBC and NOESY).
Natural product research 09/2011; 26(19):1782-6. · 1.01 Impact Factor
-
[show abstract]
[hide abstract]
ABSTRACT: To study the optimum extraction process of the total flavonoids from the flowers of Edgeworthia chrysantha Lindl.
The effect of the concentration of ethanol, extraction time and ratio of material to liquid on the total flavonoid contents were investigated by the orthonogal test with the content of tiliroside as the chemical reference.
The optimum extraction condition was established as follows: the concentration of ethanol 75%, extraction time 1. 5 hours and the ratio of material to liquid 1:9.
The method is simple and feasible, and is the optimum extraction process of the total flavonoids from flowers of Edgeworthia Chrysantha Lindl.
Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials 02/2007; 30(1):95-7.
