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n.1.(Chem.) An alkaloid found in opium in small quantities, and extracted as a white crystalline substance.
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ochroleuca, and a great variety of alkaloids (berberine, palmatine, protopine, sarguinarine, optisine, chelerythrine, atropine, dihydrosanguinarine, dihydro-chelerythrine, [alpha]-allacriptopine, heleritrine, queilantifoline, scouletrine, reticuline, and copsitine) were identified (Israilov et al.
parviflora components such as 23a-homostigmast-5-en-3b-ol (C30H52O) and cis- and trans-protopinium or protopine (C20H19N+O5) were previously isolated through bioactivity-guided isolation (Naz et al.
The plant contains, as major constituents, isoquinoline alkaloids (such as sanguinarine, chelidonine, chelerythrine, berberine, protopine and coptisine), flavonoids, and phenolic acids.
Results: The chemical analysis of AFC revealed the presence of 23 alkaloids, being the most abundants stylopine, protopine and coptisine.
122), (33) before being converted to protopine by N-methylstylopine hydroxylase (MSH; EC 1.
The Main constituents: The plant contains the alkaloids fumarine, protopine and adlumidicaine, isoquinoline alkaloids, lahorine and lahoramine.
Antispasmodic and relaxant activity of chelidonine, protopine, coptisine, and Chelidonium majus extracts on isolated guinea-pig ileum.
Sanguinaria conadensis Alkaloids such as sanguinarine, protopine, cholerythrine; and chelidone acid.
2%), sanguinarine (98%), chelerythrine (97%), protopine (100%) and gemcitabine (100%) were purchased from Sigma-Aldrich.
Several known isoquinoline alkaloids were isolated from Thalictrum foetidum: thalactamine, protopine, thalidezine, hernandezine, O-methylthalicberine, thaligosine, berberine, laudanine, fetidine, argemonine, and argemonine N-oxide (6) (Velcheva et al.