[Preparation and pharmacological activity of N6, 02-dipivaloyl-cyclic AMP]

The synthesis of N6,O2'-dipivaloyl-cyclic AMP is described with some pharmacological tests made in comparison with the dibutyryl homolog. The two compounds proved equally active in increasing glycemia in the rabbit whereas the dipivaloyl derivative is less effective in counteracting contractions induced by imidazole in the isolated guinea-pig trachea.