摘要:
S-protected cysteine derivatives [Cys(Trt), Cys(MBzl), Cys(Dbs), Cys(Bzh)] as well as cysteine were converted to cystine by the action of DMSO/TFA; as examples, two model peptides, oxytocin and an alpha-human calcitonin gene-related peptide (alpha-hCGRP), were prepared by this reaction.