ChemInform Abstract The flavones (V) are synthesized by the sequence shown in the reaction scheme. The compounds have only moderate antibacterial and antifungal activities.

Sixteen title compounds of type (V) are prepared and converted to the corresponding azetidinones of type (VII) and thiazolidinones of type (IX).

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175ChemInform Abstract The oxadiazoles (VI) are synthesized from the hydrazides (III) by phosphorus oxychloride-induced cyclization and subsequent reaction with the sulfonamides (V).

ChemInform Abstract The indole derivative (V) is obtained from the N-cyanoethylaniline (III) by coupling with 1-benzoylethyl bromide (IV), followed by cyclodehydration in the presence of P2O5. Reduction of (V) yields the primary amine (VI) which is transformed into various N-substituted analogues as shown in the reaction scheme.