A substantially hydrophilic conjugate is provided having a peptide that is capable of passing the blood-brain barrier covalently linked to a water-soluble nonpeptidic polymer such as polyethylene glycol. The conjugate exhibits improved solubility and in vivo stability and is capable of passing the blood-brain barrier of an animal.
A substantially hydrophilic conjugate is provided having a peptide that is capable of passing the blood-brain barrier covalently linked to a water-soluble nonpeptidic polymer such as polyethylene glycol. The conjugate exhibits improved solubility and in vivo stability and is capable of passing the blood-brain barrier of an animal.
A rapid and facile method for the preparation of peptide disulfides
作者:Toshihiro Maruyama、Takayoshi Ikeo、Massaki Ueki
DOI:10.1016/s0040-4039(99)00926-0
日期:1999.7
efficient method for disulfide bond formation in peptides utilizing carbontetrachloride in dichloromethane in the presence of tetrabutylammonium fluoride (TBAF) is described. The reaction proceeded rapidly and no side reaction was observed with nucleophilic amino acids such as Met, His, Tyr or Trp. This method has been applied to three model peptides using solution and on-the-resin disulfide formation.