Studies on Peptides. XLIII. Synthesis of Two Protected Peptides Related to the C-Terminal Portion of the Basic Trypsin Inhibitor from Bovine Pancreas (Kunitz and Northrop)
作者:HARUAKI YAJIMA、YOSHIAKI KISO、KOUKI KITAGAWA
DOI:10.1248/cpb.22.1079
日期:——
The protected nonadecapeptide and the C-terminal dipeptide corresponding to positions 38 through 56 and 57-58 of the basic trypsin inhibitor from bovine pancreas were prepared. Synthesis of the protected nonadecapeptide, Z (OMe)-Cys (Bzl)-Arg (Tos)-Ala-Lys (Z)-Arg (Tos)-Asn-Asn-Phe-Lys (Z)-Ser-Ala-Glu (OBzl)-Asp (OBzl)-Cys (Bzl)-Met-Arg (Tos)-Thr-Cys (Bzl)-Gly-OH, was achieved by condensation of three subunits : Z (OMe)-Cys (Bzl)-Arg (Tos)-Ala-Lys (Z)-Arg (Tos)-NHNH2 (positions 38-42), Z (OMe)-Asn-Asn-Phe-Lys (Z)-Ser-Ala-NHNH2 (positions 43-48) and Z (OMe)-Glu (OBzl)-Asp (OBzl)-Cys (Bzl)-Met-Arg (Tos)-Thr-Cys (Bzl)-Gly-OH (positions 49-56). The C-terminal dipeptide was prepared in a form of Z (OMe)-Gly-Ala-OH.
制备了对应于来自牛胰腺的碱性胰蛋白酶抑制剂的38至56和57-58位的受保护的九肽和C端二肽。受保护的九肽 Z (OMe)-Cys (Bzl)-Arg (Tos)-Ala-Lys (Z)-Arg (Tos)-Asn-Asn-Phe-Lys (Z)-Ser-Ala-Glu 的合成( OBzl)-Asp (OBzl)-Cys (Bzl)-Met-Arg (Tos)-Thr-Cys (Bzl)-Gly-OH,通过三个亚基缩合获得:Z (OMe)-Cys (Bzl)-Arg (Tos)-Ala-Lys (Z)-Arg (Tos)-NHNH2(位置 38-42),Z (OMe)-Asn-Asn-Phe-Lys (Z)-Ser-Ala-NHNH2(位置 43-48) )和Z(OMe)-Glu(OBzl)-Asp(OBzl)-Cys(Bzl)-Met-Arg(Tos)-Thr-Cys(Bzl)-Gly-OH(位置49-56)。 C端二肽以Z(OMe)-Gly-Ala-OH的形式制备。