Fig. 10: Synthetic application of compound 3aa.

a The cyclization of 3aa with hydrazine hydrate. b The oxidation of 3aa to acid 10. c The oxidation of 3aa to ester 11. d The oxidative amidation of 3aa to amide 12.

a The cyclization of 3aa with hydrazine hydrate. b The oxidation of 3aa to acid 10. c The oxidation of 3aa to ester 11. d The oxidative amidation of 3aa to amide 12.