Norcystine, a New Tool for the Study of the Structure−Activity Relationship of Peptides
摘要:
Norcysteine ( Ncy) is an unnatural amino acid possessing an electronegative sulfur atom directly attached to the alpha-carbon atom. We describe the synthesis of Boc-D, L-Ncy( Mob)-OH, the resolution of its methyl ester, and the introduction of both D- and L-Ncy in GnRH analogues.
Norcystine, a New Tool for the Study of the Structure−Activity Relationship of Peptides
摘要:
Norcysteine ( Ncy) is an unnatural amino acid possessing an electronegative sulfur atom directly attached to the alpha-carbon atom. We describe the synthesis of Boc-D, L-Ncy( Mob)-OH, the resolution of its methyl ester, and the introduction of both D- and L-Ncy in GnRH analogues.