Fig. 4: Synthetic application of the developed method.

a Skeletal transformation of indole-containing natural product. b Direct drug–natural product conjugation. c Late-stage conjugation of aminoaryl/phenol to anticancer drug, Nilotinib. d Synthesis of the regioisomeric CZC2483211. Turquoise coloured structures originated from diformylmethane analogs. Pink coloured structures originated from acetylene substrates.