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(a) Degradation of (4-aminophenyl)methanol carbonates and carbamates. (b) Degradation of 2,6-bis(hydroxymethyl)aniline (1) carbonate units in a CSPT via 1,4-and 1,8-elimination reactions (two repeating units shown in the scheme). (c) Synthesis of UV-responsive model drug conjugate CPT-1a-CPT.
