中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
Fmoc-O-叔丁基-L-酪氨酸 | Fmoc-Tyr(tBu)-OH | 71989-38-3 | C28H29NO5 | 459.542 |
The total synthesis of cyclic hexapeptide dichotomin A from linear peptide precursors containing penicillamine-derived pseudoproline residues is reported. The incorporation of a pseudoproline residue led to a faster reaction and higher head-to-tail cyclization yields in comparison to linear precursors containing the native valine residue. However, deprotection of the pseudoproline resulted in significant amounts of a by-product in which a threonine side chain had undergone dehydration, resulting in a low overall yield of the natural product.