title: Pyrimidine and triazine 3-oxide sulfates: a new family of vasodilators.
abstract: Di- and triaminopyrimidine 3-oxides (e.g., 2,4-diamino-6-piperidinylpyrimidine 3-oxide and 2,4-diamino-6-(diallylamino)triazine 3-oxide) react with sources of sulfur trioxide, such as sulfur trioxide trimethylamine or chlorosulfuryl chloride, to yield the corresponding heterocyclic O-sulfates. These sulfates are inner salts with unusual physical properties. The structure of the O-sulfate of 2,4-diamino-6-piperidinylpyrimidine 3-oxide was confirmed by X-ray. These O-sulfates are hypotensives. They apparently act by direct vasodilation.
mesh_terms: D000818:Animals; D001794:Blood Pressure / Q000187:drug effects; D003497:Cyclic N-Oxides / Q000138:chemical synthesis / Q000494:pharmacology; D004285:Dogs; D005260:Female; D008914:Minoxidil / Q000494:pharmacology; D011743:Pyrimidines / Q000138:chemical synthesis* / Q000494:pharmacology; D051381:Rats; D011919:Rats, Inbred Strains; D014227:Triazines / Q000138:chemical synthesis* / Q000494:pharmacology; D014665:Vasodilator Agents / Q000138:chemical synthesis* / Q000494:pharmacology
chemical_list: D003497:Cyclic N-Oxides; D011743:Pyrimidines; D014227:Triazines; D014665:Vasodilator Agents; D008914:Minoxidil