Total synthesis of bovine pancreatic ribonuclease A. Part 4. Synthesis of the protected tetraoctacontapeptide ester (positions 41–124)
作者:Nobutaka Fujii、Haruaki Yajima
DOI:10.1039/p19810000811
日期:——
Commencing with the protectedhexapentacontapeptide corresponding to the sequence Z(OMe)-(69–124)-OBzl of bovinepancreatic RNase A, chain elongation was carried out to the tetraoctacontapeptide, Z(OMe)-(RNase 41–124)-OBzl, by seven successive azide condensations of the peptide fragments Z(OMe)-Cys(MBzl)-Lys(Z)-Asn-Gly-NHNH-Troc (16), Z(OMe)-Asn-Val-Ala-NHNH2(17), Z(OMe)-Val-Cys(MBzl)-Ser-Gln-Lys(Z)-NHNH2(18)