The use of a Mitsunobu reagent for the formation of heterocycles: a simple method for the preparation of 3-alkyl-5-aryl-1,3,4-oxadiazol-2(3H)-ones from carboxylic acids
The reaction of carboxylic acids with Mitsunobu reagents, prepared by the reaction of triphenylphosphine with dialkyl azodicarboxylates, followed by heating at 180-190 degrees C under solvent-free conditions, afforded 3-alkyl-5-aryl-1,3,4-oxadiazol-2(3H)-ones. This facile and convenient method readily provides the 1,3,4-oxadiazolone ring systems in good yields using a one-pot protocol starting from
Disclosed herein are spirocyclic compounds, together with pharmaceutical compositions and methods of ameliorating and/or treating a cancer described herein with one or more of the compounds described herein.
Disclosed herein are spirocyclic compounds, together with pharmaceutical compositions and methods of ameliorating and/or treating a cancer described herein with one or more of the compounds described herein.