Alkaloids originally isolated from the ergot fungus Claviceps purpurea (Hypocreaceae). They include compounds that are structurally related to ergoline (ERGOLINES) and ERGOTAMINE (ERGOTAMINES). Many of the ergot alkaloids act as alpha-adrenergic antagonists.

• Ergot Alkaloids Alkaloids originally isolated from the ergot fungus Claviceps purpurea (Hypocreaceae). They include compounds that are structurally related to ergoline (ERGOLINES) and ERGOTAMINE (ERGOTAMINES). Many of ...
• Vinca Alkaloids A class of alkaloids from the genus of apocyanaceous woody herbs including periwinkles. They are some of the most useful antineoplastic agents.
• Solanaceous Alkaloids Alkaloids, mainly tropanes, elaborated by plants of the family Solanaceae, including Atropa, Hyoscyamus, Mandragora, Nicotiana, Solanum, etc. Some act as cholinergic antagonists; most are very ...
• Veratrum Alkaloids Alkaloids with powerful hypotensive effects isolated from American or European Hellebore (Veratrum viride Ait. Liliaceae and Veratrum album L. Liliaceae). They increase cholinergic and decrease ...
• Pyrrolizidine Alkaloids Alkaloids found in various species of Senecio and other plants. There are at least ten different chemicals, many of them hepatotoxic, teratogenic, and carcinogenic. The ...
• Berberine Alkaloids A group of related plant alkaloids that contain the BERBERINE heterocyclic ring structure.
• Solanum Alkaloids Alkaloids, mainly tropanes, elaborated by plants of the family Solanaceae, including Atropa, Hyoscyamus, Mandragora, Nicotiana, Solanum, etc. Some act as cholinergic antagonists; most are very ...