Strategies for the Solid-Phase Diversification of Poly-l-proline-Type II Peptide Mimic Scaffolds and Peptide Scaffolds Through Guanidinylation
摘要:
A strategy for the solid-phase diversification of PPII mimic scaffolds through guanidinylation is presented. The approach involves the synthesis N-Pinc-N'-alkyl thioureas as diversification reagents. Analogues of Fmoc-Orn(Mtt)-OH can be incorporated into a growing peptide chain on Wang resin. Side chain deprotection with 1% TFA/CH(2)Cl(2) followed by EDCI-mediated reaction of N-Pmc-N'-alkyl thioureas with the side chain amine affords arginine analogues with modified guanidine head groups. The scope, limitations, and incidental chemistry are discussed.
Strategies for the Solid-Phase Diversification of Poly-l-proline-Type II Peptide Mimic Scaffolds and Peptide Scaffolds Through Guanidinylation
摘要:
A strategy for the solid-phase diversification of PPII mimic scaffolds through guanidinylation is presented. The approach involves the synthesis N-Pinc-N'-alkyl thioureas as diversification reagents. Analogues of Fmoc-Orn(Mtt)-OH can be incorporated into a growing peptide chain on Wang resin. Side chain deprotection with 1% TFA/CH(2)Cl(2) followed by EDCI-mediated reaction of N-Pmc-N'-alkyl thioureas with the side chain amine affords arginine analogues with modified guanidine head groups. The scope, limitations, and incidental chemistry are discussed.
Strategies for the Solid-Phase Diversification of Poly-<scp>l</scp>-proline-Type II Peptide Mimic Scaffolds and Peptide Scaffolds Through Guanidinylation
作者:Stevenson Flemer、Alexander Wurthmann、Ahmed Mamai、José S. Madalengoitia
DOI:10.1021/jo8012258
日期:2008.10.3
A strategy for the solid-phase diversification of PPII mimic scaffolds through guanidinylation is presented. The approach involves the synthesis N-Pinc-N'-alkyl thioureas as diversification reagents. Analogues of Fmoc-Orn(Mtt)-OH can be incorporated into a growing peptide chain on Wang resin. Side chain deprotection with 1% TFA/CH(2)Cl(2) followed by EDCI-mediated reaction of N-Pmc-N'-alkyl thioureas with the side chain amine affords arginine analogues with modified guanidine head groups. The scope, limitations, and incidental chemistry are discussed.