Scheme 3. Synthesis of the cPT 38, with no free amine group.
The cyclization linker a19 (shown in blue) was synthesized using FmOH (a17) and succinic anhydride (a18)43 and was incorporated in the cPT synthesis.
The cyclization linker a19 (shown in blue) was synthesized using FmOH (a17) and succinic anhydride (a18)43 and was incorporated in the cPT synthesis.