Alkaloid - Wikipedia
Alkaloids are a class of basic, naturally occurring organic compounds that contain at least one nitrogen atom. This group also includes some related compounds with neutral [ 2 ] and even weakly acidic properties. [ 3 ] . Some synthetic compounds of similar structure may also be termed alkaloids. [ 4 ] .
Alkaloid | Definition, Structure, & Classification | Britannica
2024年8月30日 · Alkaloid, any of a class of naturally occurring organic nitrogen-containing bases. Alkaloids have diverse and important physiological effects on humans and other animals. Well-known alkaloids include morphine, strychnine, quinine, ephedrine, and nicotine.
Introductory Chapter: Alkaloids - Their Importance in Nature ...
2019年11月13日 · Alkaloids are very important compounds for human beings. For ages their extracts were used as a cure to rescue people from pain like morphine and some illnesses like quinine in malaria and colchicine in gout. Thanks to alkaloids during ages, people can cure the diseases and improve their life.
Alkaloid - an overview | ScienceDirect Topics
Alkaloids are secondary metabolites originally defined as pharmacologically active compounds, primarily composed of nitrogen (Croteau et al., 2000; Ziegler & Facchini, 2008). They are synthesized from one of the few common amino acids: lysine, tyrosine and tryptophan.
Characteristics of alkaloids | Britannica
alkaloid, Basic (see base) organic compounds of plant origin, containing combined nitrogen. Alkaloids are amines, so their names usually end in “ine” (e.g., caffeine, nicotine, morphine, quinine). Most have complex chemical structures of multiple ring systems.
Plant Alkaloids: Main Features, Toxicity, and Mechanisms of ...
2015年1月1日 · Alkaloids are low-molecular-weight nitrogen-containing compounds and, due to the presence of a heterocyclic ring containing a nitrogen atom, are typically alkaline. Alkaloids are known by their numerous pharmacological effects on vertebrates.
Plant Alkaloids: Structures and Bioactive Properties - Springer
2020年6月28日 · Alkaloids are nitrogen-containing natural products found in bacteria, fungi, animals, and plants with complex and diverse structures. The widespread distribution of alkaloids along with their wide array of structures makes their classification often difficult.