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New abietane-type diterpene glycosides from the roots of Tripterygium wilfordii.

New abietane-type diterpene glycosides from the roots of Tripterygium wilfordii.

Journal of Asian natural products research (2015-01-16)

Hong-Mei Li, Da-Wu Wan, Rong-Tao Li

ABSTRACT

Two new abietane diterpene glycosides, wilfordosides A (1) and B (2), were isolated from the roots of Tripterygium wilfordii. The structures of compounds 1 and 2 were established using spectroscopic methods including extensive 1D and 2D NMR analysis, in combination with chemical reactions.

MATERIALS

Product Number

Brand

Product Description

Sigma-Aldrich

1,3-Propylene sulfite, 99%

Sigma-Aldrich

Tetramethylsilane, ≥99.0% (GC)

Sigma-Aldrich

Tetramethylsilane, electronic grade, ≥99.99% trace metals basis

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Trichloroacetic acid, ACS reagent, for the determination of Fe in blood according to Heilmeyer, ≥99.5%

Sigma-Aldrich

Trichloroacetic acid, BioUltra, ≥99.5% (T)

Sigma-Aldrich

Trichloroacetic acid, BioXtra, ≥99.0%

Sigma-Aldrich

Trichloroacetic acid, suitable for electrophoresis, suitable for fixing solution (for IEF and PAGE gels), ≥99%

Sigma-Aldrich

Trichloroacetic acid, ≥99.0% (titration)

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Trichloroacetic acid, ACS reagent, ≥99.0%

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cis-4-Hydroxy-L-proline, collagen synthesis inhibitor

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Potassium bromide, BioXtra, ≥99.0%

Sigma-Aldrich

Trichloroacetic acid solution, 6.1 N

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Potassium bromide, anhydrous, powder, 99.95% trace metals basis

Sigma-Aldrich

Potassium bromide, anhydrous, powder, 99.999% trace metals basis

Sigma-Aldrich

Potassium bromide, BioUltra, ≥99.5% (AT)