title: Recent progress in the improvement of the coupling efficiency of "difficult sequences" in peptide synthesis.
abstract: Even though chemistry is now in place that potentially allows high coupling efficiencies to be attained, successful coupling is usually a challenge when so-called "difficult sequences" is encountered in peptide synthesis. Some factors that affect the coupling efficiency have been discussed and related methods to overcome those obstacles have been introduced in present review. All suggestions proposed here are valuable and also feasible to improve the coupling completeness in both liquid-phase or solid-phase
authors.affiliation: Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
authors.forename: Xiang
authors.initials: X
authors.lastname: Han
authors.forename: De-xin
authors.initials: DX
authors.lastname: Wang
mesh_terms: D000215:Acylation; D000595:Amino Acid Sequence; D015394:Molecular Structure; D009943:Organophosphorus Compounds / Q000737:chemistry; D010446:Peptide Fragments / Q000138:chemical synthesis* / Q000737:chemistry; D010455:Peptides / Q000138:chemical synthesis* / Q000737:chemistry; D011392:Proline / Q000031:analogs & derivatives / Q000737:chemistry; D012117:Resins, Synthetic / Q000737:chemistry; D013696:Temperature; D013844:Thiazoles / Q000737:chemistry; D013861:Thiocyanates / Q000737:chemistry; D014230:Triazoles / Q000737:chemistry
chemical_list: D009943:Organophosphorus Compounds; D010446:Peptide Fragments; D010455:Peptides; D012117:Resins, Synthetic; D013844:Thiazoles; D013861:Thiocyanates; D014230:Triazoles; C496388:benzotriazol-1-yloxtri (pyrrolidinol)phosphonium hexafluorophosphate; C505976:pseudoproline; D011392:Proline; C009941:potassium thiocyanate