Systematic Study of the Synthesis of Macrocyclic Dipeptide β-Turn Mimics Possessing 8-, 9-, and 10- Membered Rings by Ring-Closing Metathesis
作者:Ramesh Kaul、Simon Surprenant、William D. Lubell
DOI:10.1021/jo0477648
日期:2005.5.1
A systematicstudy was performed to establish general synthesis protocols for forming enantiomerically pure macrocyclicdipeptide lactams. Focusing on macrocycles of 8-, 9-, and 10-memberedrings, effective syntheses were achieved by a sequence featuring peptide coupling of allyl- and homoallyl-glycine building blocks followed by ring-closingmetathesis. The 8-membered lactam-possessing cis-amide and
Synthesis of an Eight-Membered Cyclic Pseudo-Dipeptide Using Ring Closing Metathesis
作者:Christopher J. Creighton、Allen B. Reitz
DOI:10.1021/ol015530u
日期:2001.3.1
[GRAPHICS]Ring closing metathesis of diallylglycine 6 provided cyclic Z-olefin 7 in 80% yield, The reaction was promoted by substitution of the amide nitrogen with the 2,4-dimethoxybenzyl group allowing for the required cis diallylglycine amide rotamer, Removal of the protecting groups provided cyclic dipeptide 2, a constrained scaffold useful in peptidomimetic research.