In view of the wide range of physiological activities, α-aminophosphonic acids have received a lot of attention by several research groups. Several of these derivatives have proven to be enzyme inhibitors, [1] and [2] herbicides (eg, glyphosate) or neurotransmitters. [3] and [4] During our efforts to evaluate new azaheterocyclic phosphonates for agricultural applications, [5], [6] and [7] the possibility of ring-closing metathesis with new ruthenium catalysts was explored. During ...
