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Chemical Structure| 917805-74-4 Chemical Structure| 917805-74-4

Structure of 917805-74-4

Chemical Structure| 917805-74-4

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Product Details of [ 917805-74-4 ]

CAS No. :917805-74-4
Formula : C26H39FN4O6S
M.W : 554.67
SMILES Code : CC(C)(N)C.OC(C[C@H](O)C[C@H](O)/C=C/C1=C(C(C)C)N=C(N(C)S(C)(=O)=O)N=C1C2=CC=C(C=C2)F)=O
MDL No. :N/A

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Application In Synthesis of [ 917805-74-4 ]

* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

  • Downstream synthetic route of [ 917805-74-4 ]

[ 917805-74-4 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 75-64-9 ]
  • [ 147118-40-9 ]
  • [ 917805-74-4 ]
YieldReaction ConditionsOperation in experiment
84% In water; at 25℃;Product distribution / selectivity; Example 4130.0 g (0.061 mol) of crystalline Form II rosuvastatin methylester are suspended in 150 cm3 of water with stirring at 25 °C. Into the suspension thus obtained, 61 cm of 1.0 M aqueous TBA solution are added. Thereafter in two hours periods, each time 12.2 cm3 of 1.0 M aqueous TBA solution added to the reaction mixture four times. After 16 hours reaction time, a further 12.2 cm3 portion of 1.0 M aqueous TBA solution are added and the reaction mixture is stirred for a further 24 hours. The product is filtered, washed with cold ethylacetate and dried. Thus 28.5 g (84 percent) of white product having purity (HPLC) of 99.98 percent are obtained.
10.5 g The resulting crude oil phase compound of formula III (R1 = Me) was dissolved in 50 mL of acetonitrile, 50 mL of a 1N NaOH aqueous solution was added dropwise to the reaction solution at 20°C. The reaction mixture was stirred at 17 to 22°C for 1 hour. After completion of the reaction, the pH of the mixture was adjusted to 5.2 with 10percent aqueous HCl solution and extracted with 100 mL of ethyl acetate. The aqueous layer was removed and the organic layer was washed twice with 70 mL of 10percent aqueous NaCl solution. The separated organic layer over anhydrous magnesium sulfate (MgSO4) 10 g of dehydrated and filtered, and were concentrated in vacuo at 45~50°C. The resulting yellow oil phase rosuvastatin crude product was dissolved in 50 mL of methylene chloride, followed by 3 mL of tert-butylamine. The reaction mixture was refluxed for 1 hour, the reaction mixture was cooled to room temperature, Subsequently, the mixture was cooled and stirred at 0 to 5°C for 2 hours, filtered and dried at 40°C for 4 hours to obtain 10.5 g of rosuvastatin tert-butylamine salt as a compound of the formula (II) as an off-white solid. 2-step yield 93percent, HPLC purity 99.7percent, diastereomer 0.05percent, enantiomer <0.02percent.
  • 2
  • [ 147118-40-9 ]
  • [ 917805-74-4 ]
 

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