11beta,17-dihydroxypregn-4-ene-3,20-dione 21-[(1-benzyl-1H-indazol-3-yl)oxy]acetate

Versacort,Angelini,Italy,1978

Hydrocortisone (25 g) and bendazac chloride (21 g) are suspended in anhydrous dioxane (250 ml). Pyridine (6 ml) is added and the solution is kept under stirring for 2 hours at room temperature. Pyridine hydrochloride which separates is filtered and the clear dioxane solution is added, under strong stirring, to a solution of sodium bicarbonate (20 g) in distilled water (2,500 ml). The colorless precipitate which is formed is filtered, washed with water and dried on a porous plate. The substance crystallizes from ethanol. Needles. MP 174°-176°C. Yield: 75%.

Glucocorticoid

An experimental teratogen. Whenheated to decomposition it emits toxic fumes of NOx.