Steroids are a general term for a large class of cyclopentadiene derivatives widely distributed in the biological world, also known as steroids or steroid compounds. Steroid compounds do not contain bound fatty acids and are non saponifiable lipids; This type of compound belongs to the class of isoprene substances, which are generated by the cyclization of triterpenes, followed by intramolecular recombination and chemical modification. Steroids include sterols (such as cholesterol, lanosterol, sitosterol, stigmasterol, ergosterol), bile acids and bile alcohols, steroid hormones (such as adrenal cortex hormones, androgens, estrogens), insect molting hormones, cardiac glycosides and saponin ligands, and toad venom. In addition, there are artificially synthesized steroid drugs such as anti-inflammatory agents (prednisone, dexamethasone), steroid drugs that promote protein synthesis, and oral contraceptives. Anabolic steroids are similar to synthetic androgens. They are a class of chemically synthesized derivatives that are similar in structure and activity to the human androgen testosterone.
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