Scheme 1.
Platform structures that present C3 symmetry. EDCI, 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide; HOBt, hydroxybenzotriazole; DIEA, N,N-diisopropylethylamine; DMF, dimethylformamide; TFA–, trifluoroacetate; Boc, t-butoxycarbonyl.
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