The present invention provides a process for the preparation of substantially pure trityl olmesartan medoxomil. The present invention also provides a process for purification of trityl olmesartan medoxomil. The present invention further provides a process for purification of olmesartan medoxomil.
Synthesis of Olmesartanmedoxomilmethylether (2), a potential impurity of Olmesartanmedoxomil (1), an angiotensin II receptor blockers is reported for the first time.