Effect of piperidine on benzylaspartyl peptides in solution and in the solid phase

Abstract
Basic conditions (e.g. piperidinolysis), used for the removal of the Nα-9-fluorenylmethyloxycarbonyl group, lead to significant cleavage of side-chain benzyl esters of peptides containing benzylaspartyl residues both in solution and solid-phase syntheses; the intermediate imide derivative is slowly transformed to a mixture of piperidides.

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