Oxadiazoles have been the subject of investigation in a number of different therapeutic areas, usually as an alternative for ester or amide functionalities. [1,2,4]Oxadiazoles have been proposed as muscarinic receptor agonist, [ 2 2. Messer , JWS ; Abuh , YF ; Liu , Y. ; Periyasamy , S. ; Ngur , DO ; Edgar , MAN ; El-Assadi , AA ; Sbeih , S. ; Dunbar , PG ; Roknich , S. ; Rho , T. ; Fang , Z. ; Ojo , B. ; Zhang , H. ; Huzl , JJ ; Nagy , PI Synthesis and biological ...