Journal of the Chemical Society. Perkin transactions I p. 522 - 528 (1981)
Update date:2022-07-29
Topics:
Coyle, Susan
Hallett, Allan
Munns, Michael S.
Young, Geoffrey T.
S-(Diphenyl-4-pyridylmethyl)-L-cysteine (1) and its derivatives (2)-(7) have been prepared and used in peptide synthesis.In contrast to the analogous S-trityl group, this protection is stable in acid but it is cleaved readily by zinc-acetic acid, by mercury(II) acetate, by iodine, and by electrolytic reduction.N(Im)-Diphenyl-4-pyridylmethyl-L-histidine derivatives (9)-(13) are also reported; the protecting group is again stable to acid but cleaved by hydrogenolysis, by zinc-acetic acid, and by electrolytic reduction, and it has been used in the synthesis of L-histidyl-L-leucine, -L-phenylalanine, and -glycine.
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