P. Zubrzak et al., Search for new synthetic immunosuppressants. Antamanide analogues containing the tetrazole ring as a cis-peptide bond mimetic, POL J CHEM, 75(12), 2001, pp. 1869-1876
Linear and cyclic antamanide (ANT) analogues with dipeptide segments Pro(2)
-Pro(3), Pro(7)-Pro(8) and both of them replaced by their tetrazole analogu
e Pro-psi [CN4]-Ala, respectively, have been synthesized by SPPS method and
cyclization with TBTU reagent. The peptides were examined for their immuno
suppressive activity in a lymphocyte proliferation test (LPT).