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Taxus chinensis var. mairei (Taxaceae) is a domestic variety of yew species in local China. This plant is one of the sources for paclitaxel, which is a promising antineoplastic chemotherapy drugs during the last decade. We have sequenced the complete nucleotide sequence of the chloroplast (cp) genome of T. chinensis var. mairei. The T. chinensis var. mairei… (More)
Three new saponins, capilliposide A (1), capilliposide B (2) and capilliposide C (3) were isolated from an ethanol extract of Lysimachia capillipes. Their structures were determined by 1D and 2D NMR (1H-1H COSY, HMBC, HMQC, DEPT and TOCSY) techniques, MS, and hydrolysis. Capilliposide B showed significant cytotoxicity against human A-2780 cells.
OBJECTIVE To study the chemical constituents from the whole plant of Lysimachia davurica. METHOD The constituents were separated and purified by column chromatograph, and identified by spectral analysis and physical data. RESULT Six compounds were isolated and identified as triacontanoic acid(I), palmitic acid(II), beta-amyrin(III), stigmasterol(IV),… (More)
Ultraviolet-B (UV-B) radiation is harmful to plants and human beings. Many secondary metabolites, like flavonoids, alkaloids, and lignin, are UV-B absorbing compounds, which can protect the genetic material of plants. Furthermore, they are active components of herbal drugs. UV-B radiation can activate the self-protective secondary metabolism system. The… (More)
UNLABELLED The dried earthworm is a traditional thrombolytic medicine in East Asia. Its thrombolytic mechanism has been extensively studied. However, the effects of drying process on thrombolysis were rarely investigated. Herein, we compared the thrombolytic activity of earthworm Eisenia fetida processed by sun-drying to that by freeze-drying. Fibrin plate… (More)
Mahonia bealei (Berberidaceae) is a frequently-used traditional Chinese medicinal plant with efficient anti-inflammatory ability. This plant is one of the sources of berberine, a new cholesterol-lowering drug with anti-diabetic activity. We have sequenced the complete nucleotide sequence of the chloroplast (cp) genome of M. bealei. The complete cp genome of… (More)
Bioguided fractionation of the ethanol extracts obtained from Platycodon grandiflorum roots led to isolation of two new triterpenoid saponins, characterized as 3-O-beta-D-glucopyranosyl-2beta,12alpha,16alpha,23,24-pentahydroxyoleanane-28(13)-lactone (1) and… (More)
Two new indolopyridoquinazoline alkaloidal glycosides, 11-O-beta-D-glucopyranosyl rutaecarpine (ternatoside C) and 11-O-alpha-L-rhamnosyl-(1-->6)-beta-D-glucopyranosyl rutaecarpine (ternatoside D) were isolated from the roots of Ranunculus ternatus. Their structures were determined on the basis of spectroscopic and chemical methods.
Two new saponins, capilliposide G (1) and capilliposide H (2), were isolated from the whole plants of Lysimachia capillipes. Their structures were determined by 1D and 2D NMR, MS technique and chemical methods.
Two new saponins, capilliposide K (1) and capilliposide L (2), were isolated from the whole plants of Lysimachia capillipes. Their structures were established by spectral and chemical techniques.