Figure 3.
(Scheme 3) Shows the reaction of Reppe anhydride 7 after 1,3-dipolar cycloaddition reaction of the Boc protected N-1.3.-diamino propane linker substituted glycine 9 with the GdxSc3-xN@C80 8. The product 11 acts as the dienophile reaction partner with diene tetrazine-NLS-S∩S-CPP conjugate 13 in the final DARinv. as pointed out in Figure 5/scheme 5).