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Antitussive and central respiratory depressant effects of Stemona tuberosa.
Isolation of iridoid and secoiridoid glycosides and comparative study on Radix gentianae and related adulterants by HPLC analysis.
Analyses of Stemona alkaloids in Stemona tuberosa by liquid chromatography/tandem mass spectrometry.
- Yan Zhou, R. Jiang, +7 authors P. Shaw
- Chemistry, MedicineRapid communications in mass spectrometry : RCM
- 30 March 2006
The LC/MS fingerprints of these alkaloids could provide an overall characterization of the authenticity and quality of this species and help to differentiate it from S. japonica and S. sessilifolia, as all three species are recognized as genuine sources of the herb Radix Stemonae in the Pharmacopoeia of the People's Republic of China.
Isolation and chemotaxonomic significance of tuberostemospironine-type alkaloids from Stemona tuberosa.
Alkaloids and chemical diversity of Stemona tuberosa.
Phytochemical investigation of the chemical components of Stemona tuberosa led to the isolation of two new alkaloids named tuberostemonine K (1) and tuberospironine (2), together with the known…
A novel 1:1 complex of potassium mikanin-3-O-sulfate with methanol.
- R. Jiang, Z. D. He, P. But, Y. Chan, S. C. Ma, T. Mak
- Chemistry, MedicineChemical & pharmaceutical bulletin
- 1 September 2001
Sulfation at 3-OH induced better co-planarity and conjugation of the rings, and the crystal structures of K(1) x CH3OH, 2 and 3 x H2O were established by X-ray crystallography.
Antiviral constituents against respiratory viruses from Mikania micrantha.
Phytochemical investigation of the dried aerial parts of Mikania micrantha led to the isolation of a new sesquiterpene, 3beta-acetoxy-1,10-epoxy-4-germacrene-12,8;15,6-diolide, which exhibited inhibitory activity against parainfluenza type 3 virus and showed moderate activity against respiratory syncytial virus.