Application of acetamidomethyl and 9‐fluorenylmethyl groups for efficient side protection of penicillamine in solid‐phase peptide synthesis
作者:
CARLOS GARCÍA‐ECHEVERRÍA,
M. ANTONIA MOLINS,
FERNANDO ALBERICIO,
MIQUEL PONS,
ERNEST GIRALT,
期刊:
International Journal of Peptide and Protein Research
(WILEY Available online 1990)
卷期:
Volume 35,
issue 5
页码: 434-440
ISSN:0367-8377
年代: 1990
DOI:10.1111/j.1399-3011.1990.tb00070.x
出版商: Blackwell Publishing Ltd
关键词: acetamidomethyl;disulfide bridge;9‐fluorenylmethyl;penicillamine;solid‐phase peptide synthesis;thiol protection
数据来源: WILEY
摘要:
Synthesis of S‐acetamidomethyl and S‐fluorenylmethyl derivatives of penicillamine is described. Both groups are completely stable to all the usual reagents in solid‐phase peptide synthesis, including the HF cleavage step, and show an excellent degree of orthogonality to each other. Treatment of the protected peptides Ac‐L‐Pen(X)‐L‐Pro‐D‐Val‐L‐Cys(X)‐NH2with thallium (III) trifluoroacetate or iodine for X = Acm or piperidine/DMF (1:1) for X = Fm induced with good yield the formation of the intramolecular disulfide bridge. This cyclic peptide appears to assume a type II β‐turn conformation in d6‐DMSO a
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