Xiao Xu-hua
2011
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Journal
Chinese Journal of Pharmaceuticals
Abstract
5-Nitroindole-2-carboxylic acid(2) was converted to the acyl chloride,then the latter was condensed with l-[3-(l-methylethylamino)-2-pyridinyl]piperazine to prepare l-(5-nitroindolyl-2-carbonyl)-4-[3-(1-methylethylamino) -2-pyridinyl]piperazine with an overall yield of about 56%(based on compound 2).