121659-03-8Relevant articles and documents
The synthesis of [18F]pitavastatin as a tracer for hOATP using the Suzuki coupling
Yagi, Yusuke,Kimura, Hiroyuki,Arimitsu, Kenji,Ono, Masahiro,Maeda, Kazuya,Kusuhara, Hiroyuki,Kajimoto, Tetsuya,Sugiyama, Yuichi,Saji, Hideo
, p. 1113 - 1121 (2015)
Fluorine-18 labeled radiotracers, such as [18F]fluorodeoxyglucose, can be used as practical diagnostic agents in positron emission tomography (PET). Furthermore, the properties of pharmaceuticals can be enhanced significantly by the introduction of fluorine groups into their original structures, and significant progress has been made during the last three decades towards the development of practical procedures for the introduction of fluorine. The replacement of the fluorine atoms present in pharmaceuticals with radioactive 18F atoms is a rational approach for designing novel PET tracers. As a fluorine-containing pharmaceutical agent, pitavastatin has attracted considerable interest from researchers working in the life sciences because it can act as an antihyperlipidemic agent as well as a substrate for hepatic organic anion transporting polypeptides (hOATP). With this in mind, it was envisaged that [18F]pitavastatin would be used as an excellent imaging agent for hOATP, which prompted us to investigate the synthesis of this agent. Herein, we report a practical method for the synthesis of [18F]pitavastatin by the Suzuki coupling reaction of p-iodofluorobenzene and a quinoline boronate derivative, with the desired product being formed in a radiochemical yield of 12 ± 3% (decay corrected from [18F]fluoride ions, n = 3). This journal is
Multi-substituted dihydroisoquinolines he the sandbank contains the fluorine derivative and use thereof
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Paragraph 0135; 0136, (2018/06/04)
The invention belongs to the field of pharmaceutical chemistry, and provides a 3-hydroxy-3-methylglutaryl-CoA reductase inhibitor. The 3-hydroxy-3-methylglutaryl-CoA reductase inhibitor is a polysubstituted miazine statin fluorine-containing modifier of 1-fluoro-3-hydroxypentanoic acid and its salt or ester formed after ring opening of 3-fluoro-caprolactone fragment and its lactone. The structural formula of the 3-hydroxy-3-methylglutaryl-CoA reductase inhibitor is shown in the specification. A result of test of like compounds shows that the compounds have an HMG-CoA reductase activity inhibition effect, and can be used as a new-generation latent HMG-CoA reductase inhibitor.
Method for preparing pitavastatin lactone impurity
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Paragraph 0007, (2016/11/17)
The invention discloses a method for preparing pitavastatin lactone impurity. 4-(1-(4-chlorobenzoyl))-6-imino-3-methyl-1,4,6,7-tetrahydropyrazolo[3,4-D][1,3]thiazol-4-yl)-2-methoxyphenol is one main impurity during production of pitavastatin calcium. The impurity can be prepared through dehydration condensation of a compound (E)-7-[2-cyclopropyl-4-(4-fluorophenyl)-3-quinolyl]-3R,5S-dihydroxy-6-heptenoic acid. The condensation reaction conditions are mild, the product purity is high, and research demand on pitavastatin calcium quality is satisfied.