General Introduction Digitalis is a genus of about 20 species of herbaceous perennials, shrubs, and biennials commonly known as foxgloves. The most commonly known species within this genus, Digitalis purpurea (the common foxglove), has been used medicinally for centuries, primarily for its cardiac glycosides, which are compounds that influence heart …
Steroids, Cardiac Glycosides & Triterpenoids
Definition of Steroids: Steroids are a class of organic compounds characterized by a core structure of 17 carbon atoms arranged in four fused rings: three cyclohexane rings (A, B, and C) and one cyclopentane ring (D). This core structure, known as the “steroid nucleus” or “cyclopentanoperhydrophenanthrene ring system,” serves as …
Glycosides: Definition, Classification, Properties, and Tests for Identification
Definition Glycosides are a group of organic compounds that yield one or more sugars upon hydrolysis. Structurally, a glycoside is composed of a sugar part, known as the glycone, and a non-sugar part, referred to as the aglycone or genin. These two parts are linked through a glycosidic bond, which …
Cardiotonic
A cardiotonic, also known as a cardiac tonic or positive inotropic agent, refers to a substance that can enhance the strength and efficiency of the heart’s contractions, particularly the force with which the heart muscle contracts during systole. These substances exert their effects on the cardiac muscle, influencing its contractility. …
Glycosides – Occurrence and Distribution
Glycosides are organic compounds with a sugar molecule (glycone) bound to a non-sugar component (aglycone or genin) through a glycosidic linkage. The glycosidic linkage involves the sugar moiety’s attachment to the non-sugar moiety’s hydroxyl group. These compounds are widely distributed in nature and can be found in plants, microorganisms, and, …