Pyrazoloisoindolone derivatives are known for their plant growth regulating properties. 1 These structures can be regarded as aza-pyrroloindolones or aza-analogues of tripentones which possess anti-cancer properties and which are widely studied in our laboratory. 2 This is the reason why we investigated the synthesis of such tricyclic compounds. ... All these methods give access to a variety of 2- and/or 3-substituted pyrazoloisoindolones, but only two references ...
