488798-38-5Relevant articles and documents
Quantum Chemical Calculations (Ab Initio & DFT), Hirshfeld Surface Analysis, Crystal Structure and Molecular Docking Study of 2-Chloro-4-(4-fluoro-phenyl)-6-isopropyl-pyrimidine-5-carboxylic Acid Methyl Ester
Gandhi, Sahaj A.,Patel, Urmila H.,Modh, Rajesh D.,Naliyapara, Yogesh,Patel, Anil S.
, p. 387 - 398 (2016)
Abstract: Pyrimidine derivatives are well-known nitrogen containing heterocyclic compound which play an important role in medicinal and pharmaceutical applications. The synthesized compound, 2-chloro-4-(4-fluoro-phenyl)-6-isopropyl-pyrimidine-5-carboxylic
Efficient Construction of the Nucleus of Rosuvastatin Calcium
Zhou, Yingtao,Lin, Chenhui,Xing, Yuzhi,Chen, Ligong,Yan, Xilong
, p. 1898 - 1903 (2017/05/29)
A novel and efficient five-step synthetic route, including a Biginelli reaction, dehydrogenation, chlorination, sulfonamidation, and reduction, for the core of Rosuvastatin was established. All steps were systematically studied. Tert-butylhydroperoxide aqueous solution was applied in the dehydrogenation instead of nitric acid. N,N-dimethylaniline was employed as a catalyst to accelerate the chlorination proceeding smoothly, and its catalytic mechanism is discussed. In the sulfonamidation, the conversion of compound 5 was obviously improved by use of NaH and acetonitrile. In addition, two sulfonamidation side products 6 and 7 were detected and isolated. Thus, under the optimized reaction conditions, the target product was obtained in 60.4% total yield, much higher than the reported yield (36.4%).