289042-10-0Relevant articles and documents
Palladium-Catalyzed Stereoselective Cyclization of in Situ Formed Allenyl Hemiacetals: Synthesis of Rosuvastatin and Pitavastatin
Spreider, Pierre A.,Breit, Bernhard
supporting information, p. 3286 - 3290 (2018/06/11)
A diastereoselective palladium-catalyzed cyclization of allenyl hemiacetals is described. It permits the selective synthesis of 1,3-dioxane derivatives, precursors for syn-configured 1,3-diols which make an appearance in all of the statin representatives. The reaction allows the total synthesis of Rosuvastatin and Pitavastatin in a straightforward fashion.
PROCESS FOR THE PREPARATION OF HMG-COA REDUCTASE INHIBITORS AND INTERMEDIATES THEREOF
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Page/Page column 20, (2012/01/14)
The present invention provides an improved process for preparing HMG-CoA reductase inhibitors such as rosuvasatin calcium, fluvastatin sodium, and pitavastatin calcium under a mild condition, using a novel amide-bond-containing compound having R2-N-O-R1 moiety as a key intermediate. And also, the present invention provides the novel compound, an intermediate useful for the preparation thereof, and a process for the preparation thereof.
Process for the production of tert-butyl (E)-(6-[2-[4-(-flourophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl]vinyl](4R,6S)-2, 2-dimethyl[1, 3]oioxan-4yl)acetace
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Page 2; 3, (2010/02/05)
The invention concerns a process for the manufacture of tert-butyl (E)-(6-[2-4-(4-fluorophenyl)-6-isopropyl-2-[methyl(methylsulfonyl)amino]pyrimidin-5-yl]vinyl}-(4R, 6S)-2,2-dimethyl[1,3-dioxan-4-yl) acetate, the novel starting material used in said process and the use of the process in the manufacture of a pharmaceutical.