Synthesis of novel ring-substituted histidines and histamines
作者:Rahul Jain、Louis A. Cohen、Michael M. King
DOI:10.1016/s0040-4020(97)00177-4
日期:1997.3
Synthesis of novel 2-cycloalkyl-L-histidines and 2-cycloalkylhistamines via radical alkylation with cycloalkylcarboxylic acids and silver nitrate in the presence of 10% H2SO4 by ammonium persulfate is described. The method is also extended to the synthesis of 1,2-dialkyl-L-histidines and 1,2-dialkylhistamines.
描述了在过硫酸铵存在的10%H 2 SO 4存在下,通过与环烷基羧酸和硝酸银的自由基烷基化反应来合成新型的2-环烷基-L-组氨酸和2-环烷基组胺。该方法还扩展到1,2-二烷基-L-组氨酸和1,2-二烷基组胺的合成。
Regiospecific alkylation of histidine and histamine at N-1 (τ)
作者:Rahul Jain、Louis A. Cohen
DOI:10.1016/0040-4020(96)00187-1
日期:1996.4
Series of 1-alkyl histidines and histamines have been synthesized by the alkylation of the corresponding 5,6,7,8-tetrahydro-5-oxoimidazo[1,5-c]pyrimidines with alkyl halides in aprotic solvents. The method of conversion of the intermediate quaternary salt to the amino acid or amine depends on the nature of the alkyl group.