Abstract
A variety of synthetic methods for preparation of heterocyclic aminophosphonates is presented; which are concerning furyl, thienyl, pyrryl and pyridyl derivatives of aminometh-anephosphonic acid and also phosphonic analogues of proline and homoproline. The obtained heterocyclic aminophosphonates were used as starting materials for synthesis of some peptidyl phosphonates. The compounds were evaluated as inhibitors of serine proteases. Most of the obtained heterocyclic aminophosphonates were preliminary tested as potential herbicides against selected plants, and some of them showed the herbicidal activity.