echimidine

[(7R,8R)-7-[(Z)-2- methylbut-2-enoyl]oxy-5,6,7,8-tetrahydro-3H-pyrrolizin-1-yl]methyl (2R)-2,3-dihydroxy-2-[(1S)-1-hydroxyethyl]-3-methylbutanoate PubMed: Toxic pyrrolizidine alkaloids provide a warning sign to overuse of the ethnomedicine Arnebia benthamii. PubMed: Development and validation of a QuEChERS method coupled to liquid chromatography and high resolution mass spectrometry to determine pyrrolizidine and tropane alkaloids in honey. PubMed: A 28-day oral toxicity study of echimidine and lasiocarpine in Wistar rats. PubMed: Acetylcholinesterase inhibitory activity of pyrrolizidine alkaloids from Echium confusum Coincy. PubMed: Pyrrolizidine Alkaloids from Echium vulgare in Honey Originate Primarily from Floral Nectar. PubMed: Metabolic Profiling of Pyrrolizidine Alkaloids in Foliage of Two Echium spp. Invaders in Australia--A Case of Novel Weapons? PubMed: Quantification of pyrrolizidine alkaloids in North American plants and honey by LC-MS: single laboratory validation. PubMed: Pyrrolizidine alkaloids in food and feed on the Belgian market. PubMed: Disturbance of gene expression in primary human hepatocytes by hepatotoxic pyrrolizidine alkaloids: A whole genome transcriptome analysis. PubMed: Development of a fast isocratic LC-MS/MS method for the high-throughput analysis of pyrrolizidine alkaloids in Australian honey. PubMed: Structure-activity relationship in the passage of different pyrrolizidine alkaloids through the gastrointestinal barrier: ABCB1 excretes heliotrine and echimidine. PubMed: Pyrrolizidine alkaloids: their occurrence in Spanish honey collected from purple viper's bugloss (Echium spp.). PubMed: Dehydropyrrolizidine alkaloids in two Cryptantha species: including two new open chain diesters one of which is amphoteric. PubMed: Comparison of metabolism-mediated effects of pyrrolizidine alkaloids in a HepG2/C3A cell-S9 co-incubation system and quantification of their glutathione conjugates. PubMed: Metabolism, genotoxicity, and carcinogenicity of comfrey. PubMed: Pyrrolizidine alkaloids in honey: comparison of analytical methods. PubMed: Determination of pyrrolizidine alkaloids in comfrey by liquid chromatography-electrospray ionization mass spectrometry. PubMed: Metabolic activation of herbal and dietary constituents and its clinical and toxicological implications: an update. PubMed: Pyrrolizidine alkaloids of Echium vulgare honey found in pure pollen. PubMed: On-line structure characterization of pyrrolizidine alkaloids in Onosma stellulatum and Emilia coccinea by liquid chromatography-ion-trap mass spectrometry. PubMed: Analysis of herbal teas made from the leaves of comfrey (Symphytum officinale): reduction of N-oxides results in order of magnitude increases in the measurable concentration of pyrrolizidine alkaloids. PubMed: Isolation of symlandine from the roots of common comfrey (Symphytum officinale) using countercurrent chromatography. PubMed: Toxicity of dietary Heliotropium dolosum seed to mice. PubMed: Pyrrolizidine alkaloids from Echium rauwolfii and Echium horridum (Boraginaceae). PubMed: [II1: TLC and HPLC-Analysis of Pyrrolizidine-N-oxid Alkaloids of Symphyti Radix].