Synthesis, absolute configuration, stereoselectivity, and receptor selectivity of (.alpha.R,.beta.S)-.alpha.,.beta.-dimethylhistamine. A novel highly potent histamine H3 receptor agonist
作者:Ralph Lipp、Jean Michel Arrang、Monique Garbarg、Peter Luger、Jean Charles Schwartz、Walter Schunack
DOI:10.1021/jm00101a021
日期:1992.11
variations of the neurotransmitter histamine led to mixtures of alpha,beta-dimethylhistamines as well as to the corresponding pure optical isomers. One of these isomers, namely (alpha R,beta S)-alpha,beta-dimethylhistamine, proved to be a highly potent H3 receptor agonist with exceptional receptor selectivity. The absolute configuration of the compound was determined by X-ray structure analysis of its
取决于选择的合成途径,神经递质组胺的结构变化导致α,β-二甲基组胺的混合物以及相应的纯光学异构体。这些异构体之一,即(αR,βS)-α,β-二甲基组胺,被证明是一种高效的H3受体激动剂,具有出色的受体选择性。使用溴的反常分散体,通过对其二氢溴化物的X射线结构分析来确定化合物的绝对构型。用(R)-2-甲氧基-2-苯基乙酰氯将胺酰化后,通过1 HNMR研究检查赤型-α,β-二甲基组胺的两种对映体的光学纯度。正如预期的那样,H3受体在标题化合物与其α-S,β-R-对映体之间有非常强的区别。