amaryllidaceae is a well-known family for its high alkaloidal content. these alkaloids comprise a unique group of bases that have been found to occur in this family. the amaryllidaceae alkaloids represent a large and still expanding group of isoquinoline alkaloids, the majority of which are not known to occur in any other family of plants this article reports on the phytochemical investigation ...

The unique polycyclic fused ring systems of Daphniphyllum alkaloids, along with their extensive bioactivities, make this family of alkaloids especially attractive targets for total synthesis and biogenetic studies. Successive discoveries of new alkaloids with unprecedented skeletons have made a great contribution to structural diversities of alkaloids elaborated by plants of the genus Daphniphy...

background & aim: a. belladonna (family: solanaceae) is one of important pharmaceutical plants which contain tropane ‎alkaloids. tropane alkaloids are distinct group of secondary metabolites of the ‎solanaceae family.  the most important alkaloids of a. belladonna are atropine and hyoscine that are used extensively because of their medicinal properties. therefore identification and ‎determi...

papaver pseudo-orientale population tarom was shown to contain two major alkaloids, isothebaine (0.65%), orientalidine (0.15%) and four minor alkaloids, bracteoline, mecambridine, or and a novel alkaloid, nor-methyl or .

WITTERS, WELDON L. Extraction and identification of clavine and lysergic acid alkaloids from morning glories. Ohio J. Sci. 75(4): 198, 1975. Seeds from three varieties of Ipomoea grown in Ohio were examined for clavine and lysergic acid alkaloids. Three systems of extraction of ergoline alkaloids were compared with the ammonium hydroxide-methanol-chloroform method proving superior to the others...

This paper presents the alkaloids found in green, brown and red marine algae. Algal chemistry has interested many researchers in order to develop new drugs, as algae include compounds with functional groups which are characteristic from this particular source. Among these compounds, alkaloids present special interest because of their pharmacological activities. Alkaloid chemistry has been widel...

Chapter Outline Introduction 123 Therapeutic Potential of Monoamine Oxidase Inhibition in Neurological Disorders 124 Depression 125 Parkinson’s Disease 126 Other Neurodegenerative Diseases 126 Smoke and Alcohol Cessation 127 Alkaloids as Monoamine Oxidase Inhibitors 127 Indole Alkaloids 128 Isoquinoline Alkaloids 134 Piperidine Alkaloids 137 Desoxypeganine 138 Other Alkaloids 139 Conclusion 141...

Alkaloids in the skin glands of poison frogs serve as a chemical defense against predation, and almost all of these alkaloids appear to be sequestered from dietary arthropods. Certain alkaloid-containing ants have been considered the primary dietary source, but dietary sources for the majority of alkaloids remain unknown. Herein we report the presence of approximately 80 alkaloids from extracts...

This review covers the isolation, structure determination, synthesis, chemical transformations and biological activity of indolizidine and quinolizidine alkaloids from microbial, plant and animal sources. Included in the review are the hydroxylated indolizidines lentiginosine, swainsonine, castanospermine and their analogues; alkaloids from animal sources, including ants, amphibians and beetles...