The Synthesis of [4-Carboranylalanine, 5-Leucine]-Enkephalin (Including an Improved Preparation of<i>t</i>-Butoxycarbonyl-<scp>L</scp>-<i>o</i>-carboranylalnine, New Derivatives of<scp>L</scp>-Propargylglycine, and a Note on Melanotropic and Opiate Receptor Binding Characteristics)
作者:Jean-Luc Fauchère、Othmar Leukart、Alex Eberle、Robert Schwyzer
DOI:10.1002/hlca.19790620502
日期:1979.7.17
The title compound, an analogue of [Leu5]-enkephalin with L-o-carboranylalanine replacing L-phenylalanine in position 4, was prepared by fragment condensation. The analogue has a 3-fold higher affinity for rat brain opiate receptors in the [3H]naloxone competition assay than natural [Leu5]-enkephalin. Like [Leu5]-enkephalin and Na-acetyl-[Leu5]-enkephalin, the N-terminal tripeptide fragment, H · Tyr-Gly-Gly
通过片段缩合制备标题化合物,其为[Leu 5 ]-脑啡肽的类似物,在位置4上用L- o-碳烷基丙氨酸代替L-苯丙氨酸。在[ 3 H]纳洛酮竞争试验中,该类似物对大鼠脑阿片受体的亲和力比天然[Leu 5 ]-脑啡肽高3倍。像〔亮5 ] -脑啡肽和Ñ一个乙酰基- [亮氨酸5 ] -脑啡肽中,Ñ末端三肽片段,H·酪氨酸-甘氨酸-甘氨酸·OH,不得不在没有melanotropic活性蛙蚊青蛙皮肤测定。