منابع مشابه
Biosynthesis of Phenolic Tetrahydroisoquinoline Alkaloids of Peyote’
THOUGH in uivo investigations of the biosynthesis of mescaline in peyote (Lophophoru williamsii (Lem.) Coult.) are relatively complete,*-‘0 reports on the biosynthesis of the isoquinoline alkaloids are less so. Battersby et al. l1 have reported the incorporation of tyrosine into pellotine, lophophorine and anhalonidine. Further, they demonstrated that dopamine was incorporated into pellotine an...
متن کاملAlkaloids and Phenolic Compounds from Sida rhombifolia L. (Malvaceae) and Vasorelaxant Activity of Two Indoquinoline Alkaloids.
The follow-up of phytochemical and pharmacological studies of Sida rhombifolia L. (Malvaceae) aims to strengthen the chemosystematics and pharmacology of Sida genera and support the ethnopharmacological use of this species as hypotensive herb. The present work reports phytoconstituents isolated and identified from aerial parts of S. rhombifolia by using chromatographic and spectroscopic methods...
متن کاملEffect of photoperiod and end-of-day light quality on alkaloids and phenolic compounds of tobacco.
Tobacco plants (Nicotiana tabacum L.) were grown on long or short photoperiods followed by 5 minutes of red or far red radiation each day. Plants that received 16-hour photoperiods had a significantly higher concentration of total alkaloids and total phenolics than those that received 8-hour photoperiods. Significantly higher total alkaloid content was found in plants that received red rather t...
متن کاملCytotoxicity, antiviral and antimicrobial activities of alkaloids, flavonoids, and phenolic acids.
OBJECTIVE Some natural products consisting of the alkaloids yohimbine and vincamine (indole-type), scopolamine and atropine (tropane-type), colchicine (tropolone-type), allantoin (imidazolidine-type), trigonelline (pyridine-type) as well as octopamine, synephrine, and capsaicin (exocyclic amine-type); the flavonoid derivatives quercetin, apigenin, genistein, naringin, silymarin, and silibinin; ...
متن کاملPhenolic alkaloids from Menispermum dauricum rhizome protect against brain ischemia injury via regulation of GLT-1, EAAC1 and ROS generation.
Menispermum dauricum rhizome has been widely used in China to treat various cardiovascular and thrombosis disorders. Some studies have reported that the phenolic alkaloids of Menispermum dauricum rhizome (PAM) have protective effects against brain ischemia injury, but the mechanism of this action remains to be clarified. In the present study, we investigated the possible mechanisms of action of...
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ژورنال
عنوان ژورنال: Nature
سال: 1962
ISSN: 0028-0836,1476-4687
DOI: 10.1038/194144a0