<prompt> Naturally, occurring glucocoicoid isHydrocoisoneCoisolPrednisoloneCoicosterone  <response>: Glucocoicoids GC are a class of steroid hormones that bind to the glucocoicoid receptor GR, which is present in almost every veebrate animal cell. The name glucocoicoid peaining to glucose coex derives from its role in the regulation of the metabolism of glucose, its synthesis in the adrenal coex.Coisol is the major natural glucocoicoid elaborated by the adrenal coex; it affects the metabolism of glucose, protein, and fats and has mineralocoicoid activityHydrocoisone a steroid hormone, of the adrenal coex, active in carbohydrate and protein metabolism, similar to coisone in effect.Prednisolone is a synthetic coicosteroid, derived from coisol and used as an anti-inflammatory, immunosuppressive, and antiallergic drug.Coicosterone is a coicosteroid that is involved in water and electrolyte balance.Ref: Ganong;s review of medical physiology;24th edition; page no-362 