Direct palladium-mediated on-resin disulfide formation from Allocam protected peptides
作者:Thilini D. Kondasinghe、Hasina Y. Saraha、Samantha B. Odeesho、Jennifer L. Stockdill
DOI:10.1039/c7ob00536a
日期:——
The synthesis of disulfide-containing polypeptides represents a long-standing challenge in peptide chemistry, and broadly applicable methods for the construction of disulfides are in constant demand. Few strategies exist for on-resin formation of disulfides directly from their protected counterparts. We present herein a novel strategy for the on-resin construction of disulfides directly from Allocam-protected
S-Allocam derivatives of thiols in general and of cysteine in particular are selectively and readily deprotected through palladium catalyzed hydrostanoolysis. They are perfectly stable in the basic conditions of Fmoc-removal. but only marginally stable in the acidic conditions of t-Bu, Boc removal.
GB780284
申请人:——
公开号:——
公开(公告)日:——
Allylic protection of thiols and cysteine: I: The allyloxycarbonylaminomethyl group