作者:Per Sauerberg、June Chen、Elizabeth WoldeMussie、Henry Rapoport
DOI:10.1021/jm00126a030
日期:1989.6
the (S)-3-ethyl-4-[(4'-imidazolyl)methyl]-2-oxazolidinone (9) structural feature were synthesized from L-histidine. With 1-benzyl-L-histidine as the key intermediate, a regiospecific synthetic route was developed to the N pi-methyl derivative 8. The regiochemistry of the alkylation of the imidazole nucleus was determined by measuring proton cross-ring coupling constants in the high-field 1H NMR. The
从L-组氨酸合成了许多含有(S)-3-乙基-4-[(4'-咪唑基)甲基] -2-恶唑烷酮(9)结构特征的毛果芸香碱类似物。以1-苄基-L-组氨酸为主要中间体,开发了N pi-甲基衍生物8的区域特异性合成途径。咪唑核烷基化的区域化学通过在高温下测量质子交叉环偶联常数来确定场1 H NMR。在分离的豚鼠回肠上研究了这些各种烷基化衍生物6-10对毒蕈碱受体的影响。咪唑氮未被取代的衍生物(9),N tau甲基化的(10)和N pi甲基化的(8)是胆碱能毒蕈碱激动剂,其效价顺序递增。化合物6和7无效。