Pluviatolide
(-)-Pluviatolide can inhibit electrically-induced and acetylcholine-induced contraction in the isolated guinea-pig ileum.
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Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to
24 months(2-8C).
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.
Need more advice on solubility, usage and handling? Please email to: service@chemfaces.com
The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
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J Nat Prod. 2008 Jul;71(7):1167-72.
Chemical constituents of Aristolochia constricta: antispasmodic effects of its constituents in guinea-pig ileum and isolation of a diterpeno-lignan hybrid.[Pubmed:
18570470 ]
Twenty constituents were isolated from the n-hexane and chloroform extracts of Aristolochia constricta, a plant whose aerial parts have been used empirically in folk medicine for various purposes.
METHODS AND RESULTS:
The inhibitory effects of these constituents on smooth muscle contraction in isolated guinea-pig ileum were studied in order to observe their antispasmodic effects. 3,4-Dibenzyldihydrofuran-type lignans [(-)-cubebin, (-)-hinokinin, and (-)-Pluviatolide] and a kaurene-type diterpene [(-)-kaur-16-en-19-oic acid] were isolated as active principals. They inhibited electrically induced and acetylcholine-induced contraction in the isolated guinea-pig ileum. In addition, 9- O-[(-)-kaur-15-en-17-oxyl]cubebin was isolated as a new diterpeno-lignan hybrid, although this constituent did not exhibit antispasmodic activity.
Chin J Nat Med. 2015 Feb;13(2):142-4.
Chemical constituents from Mongolian herb Syringa pinnatifolia var. alashanensis.[Pubmed:
25769897]
Two new sesquiterpenes, innatifolone A (1) and pinnatifolone B (2), along with 6 known compounds, furostan (3), isocalamendiol (4), Pluviatolide (5), (8S,8'R,9S)-cubebin (6), 2-(4-hydroxy-3-methoxybenzyl)-3-(3,4-dimethoxybenzyl) tetrahydrofuran (7), and methyl 3-acetoxy-12-oleanen-28-oate (8), were isolated from Mongolian herb Syringa pinnatifolia.
