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39 3 Vol. 39 No. 3
2009 6 Jun 2009

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Study on Synthesis of 24-Dimethyl-5-formyl-1H-pyrrole-3-carboxylic Acid
LIU Xiang-yu12DU Huan-da3WANG Lin1WANG YU-ling1LIU Ya-ru1MENG Fan-hao*1 1. School of PharmacyChina Medical UniversityShenyang 110001China2. Zhejiang Apeloa Kangyu Pharmaceutical Co.LtdJinhua 322118China3. Hangzhou Heta Pharm&Chem Co.LtdHangzhou 310030China
Abstract24-Dimethyl-5-formyl-1H-pyrrole-3-carboxylic acid is an important intermediate of sunitinib malateSutent. It was synthesized from t-butyl acetoacetate via the reactions of Knorr condensationdecarboxylationVilsmeier reaction and hydrolyzation. The overall yield was 55.4%. The factors influencing on the synthetic process were investigated and the optimum conditions were obtained. This was a promising industrial synthetic route
Key wordsintermediate24-dimethyl-5-formyl-1H-pyrrole-3-carboxylic acidSunitinib malatesynthesis
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“(lin) ϵ ˣϷƣ1965-E-mailfhmeng@cmu.edu.cn
ոڣ 2009-05-1
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