131666-49-4

Upstream product

• 124655-09-0 1,1-dimethylethyl (4R-cis)-6-hydroxymethyl-2,2-dimethyl-1,3-dioxane-4-acetate 
• 98-88-4 benzoyl chloride 
• 131666-50-7 ((4S,6R)-6-(2-tert-butoxy-2-oxoethyl)-2,2-dimethyl-1,3-dioxan-4-yl)methyl benzoate 
• 131690-27-2 (5S)-6-benzoyloxy-5-hydroxy-3-oxohexanoic acid tert-butyl ester 

Downstream Products

• 1235588-94-9 tert-butyl 2-((4R,6S)-6-(hydroxymethyl)-2-phenyl-1,3-dioxan-4-yl)acetate 
• 1235588-97-2 tert-butyl 2-((4R,6S)-6-((E)-2-(4-(4-fluorophenyl)-6-isopropyl-2-(N-methylmethylsulfonamido)pyrimidin-5-yl)vinyl)-2-phenyl-1,3-dioxan-4-yl)acetate 
• 355806-00-7 rosuvastatin tert-butyl ester 

Relevant academic research and scientific papers

New Statin intermediate, the preparation of the same and the preparation of Rosuvastatin using the same

The present invention provides a novel producing method for producing a core intermediate (chemical formula IV) of rosuvastatin, a novel intermediate used therefor and a producing method of rosuvastatin hemi-calcium salts using the same. The novel intermediate of the present invention can be prepared with high purity and in high yields in mild conditions, and thus the rosuvastatin intermediate and rosuvastatin hemi-calcium salts can be conveniently and efficiently mass-produced without complicated processes.

PROCESS FOR PRODUCING OPTICALLY ACTIVE 3,5-DIHYDROXYCARBOXYLIC ACID DERIVATIVE

A method for producing an optically active 3,5-dihydroxyhexanoic acid derivative by stereoselectively reducing an optically active 3-oxo-5-hydroxyhexanoic acid derivative is provided. The method, which requires neither an ultralow-temperature reactor, an