pyridine alkaloid/arthritis

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Macrolide sesquiterpene pyridine alkaloids from the stems of Tripterygium regelii.

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Nine new monomacrolide sesquiterpene pyridine alkaloids, macroregelines A-I (1-9), were isolated from the stems of Tripterygium regelii, along with a known alkaloid, tripfordine B. The structures of all the isolated compounds were characterized by extensive one-dimensional (1D) and two-dimensional

Determination of four pyridine alkaloids from Tripterygium wilfordii Hook. f. in human plasma by high-performance liquid chromatography coupled with mass spectrometry.

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A novel liquid chromatography-atmospheric-pressure chemical ionization-mass spectrometry (LC-APCI/MS) method was developed and validated for the simultaneous determination of four sesquiterpene pyridine alkaloids (wilfortrine, wilfordine, wilforgine and wilforine) in human plasma. The

Dimacrolide Sesquiterpene Pyridine Alkaloids from the Stems of Tripterygium regelii.

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Two new dimacrolide sesquiterpene pyridine alkaloids (DMSPAs), dimacroregelines A (1) and B (2), were isolated from the stems of Tripterygium regelii. The structures of both compounds were characterized by extensive 1D and 2D NMR spectroscopic analyses, as well as HRESIMS data. Compounds 1 and 2 are

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