The tripentacontapeptide corresponding to the entire linear sequence of epidermal growth factor was synthesized by assembling 15 peptide fragments and one His residue (position 22), followed by deprotection with trifluoromethanesulfonic acid-thioanisole in trifluoroacetic acid. The deprotected peptide was subjected to air-oxidation. After purification by ion-exchange chromatography on diethyl aminoethyl cellulose followed by high performance liquid chromatography, a peptide with powerful anti-gastric activity was obtained.
                                    通过组装15个肽片段和一个组
氨酸残基(位置22),合成了对应于
表皮生长因子整个线性序列的三十五肽。随后,通过
三氟甲磺酸-
噻吩在
三氟乙酸中进行脱保护。脱保护的肽进行空气氧化。经过二乙
氨基
乙基纤维素上的离子交换色谱法纯化,接着用高效液谱法,获得了一种具有强大抗胃活性的肽。