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A representative series of structural analogs of the antimitotic tripeptides hemiasterlins have been designed and synthesized, as potential inhibitors of tubulin polymerization. Relying also on a computational approach, we aimed to explore unknown extensive changes at the C-fragment, by incorporating the conformationally required double bond into five- and six-membered rings. Key steps of the synthetic...
This study reports on new pharmacologically active endomorphin-2 analogues, incorporating β2-hPhe, β3-hPhe and β3-hTic unnatural amino acids in the place of the Phe3–Phe4residues. Such α, β-hybrid analogues were designed to exploit the great potential of β-amino acids in generating conformational variation at the key positions 3 and 4, with the aim of evaluating the effect on the opioid binding...
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