Journal of the Chemical Society. Perkin transactions I p. 2411 - 2416 (1996)
Update date:2022-08-03
Topics:
Pettit, George R.
Holman, Jeffrey W.
Boland, Gerard M.
Practical total syntheses of axinastatins 2 2b and 3 2c were completed by employing Fmoc protection for the N-terminal, and tert-butyl ester blocking for the C-terminal, units of the amlno add and peptide intermediates. Generally, diethyl phosphorocyanidate proved effective for formation of the peptide bond, and in the one exception, asparagine, the o-nitrophenyl active ester proved to be useful. For the final cyclization reaction BOP-Cl was found especially effective. Copyright 1996 by the Royal Society of Chemistry.
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