作者:M. Suman、B. Vijayabhaskar、K. NageswaraRao、U. K. Syam Kumar、B. VenkateswaraRao
DOI:10.24820/ark.5550190.p010.891
日期:——
This article demonstrates an improved novel and practical synthesis of oral non-steroidal aromatase inhibitor (AI) Letrozole in a five-stage synthetic process in excellent yields. Key steps of the synthesis involve the condensation of 4-(chloro(4-cyanophenyl)methyl)benzamide with 1H-1,2,4-triazole and further its dehydration to Letrozole by using trifluoroacetic anhydride at low temperature.
本文展示了一种改进的新型和实用的口服非甾体芳香酶抑制剂 (AI) 来曲唑合成方法,该合成方法采用五步合成工艺,收率极佳。合成的关键步骤包括4-(氯(4-氰基苯基)甲基)苯甲酰胺与1H-1,2,4-三唑缩合,并在低温下使用三氟乙酸酐进一步脱水为来曲唑。