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1) Use of N-tritylamino acids and PyAOP1 for the suppression of diketopiperazine formation in Fmoc/tBu solid-phase peptide synthesis using alkoxybenzyl ester anchoring linkages
Jordi Alsina, Ernest Giralt and Fernando Albericio*
Tetrahedron Letters
Volume 37, Issue 24, 10 June 1996, Pages 4195-4198

DOI:

http://dx.doi.org/10.1016/0040-4039(96)00793-9

2)Synthesis of 2-, 4-, and 7-methylthio-substituted cephalosporins
H. E. Applegate, C. M. Cimarusti, J. E. Dolfini, P. T. Funke, W. H. Koster, M. S. Puar, W. A. Slusarchyk, M. G. Young
J. Org. Chem., 1979, 44 (5), pp 811–818

DOI:

http://dx.doi.org/10.1021/jo01319a033

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joc не видел что-то..