201402-96-2

Upstream product

• 50623-73-9 (2R,3R)-2,3-dihydroxy-4-{[(4-methylphenyl)sulfonyl]oxy}butyl 4-methyl-1-benzenesulfonate 
• 98-59-9 p-toluenesulfonyl chloride 
• 51064-65-4 1,4-di-o-tosyl-2,3-isopropylidene-D-threitol 
• 231607-42-4 C₁₈H₂₀O₉S₃ 
• 1074-82-4 potassium phtalimide 
• 201402-92-8 C₁₈H₂₀O₁₀S₃ 

Downstream Products

• 201402-97-3 2-{(S)-4-[(R)-2-((3S,4aS,8aS)-3-tert-Butylcarbamoyl-octahydro-isoquinolin-2-yl)-1-hydroxy-ethyl]-4,5-dihydro-oxazol-2-yl}-benzoic acid methyl ester 

Relevant academic research and scientific papers

Optimization of an electrolyte system for the simultaneous separation of nelfinavir mesylate and two impurities by micellar electrokinetic chromatography

A methodology for the simultaneous determination of nelfinavir mesylate and the impurities 3-hydroxy-2-methylbenzoic acid and (2R,3R)-4-((3S,4aS,8aS)-3-(tert-butylcarbamoyl) octahydroisoquinolin-2(1H)-yl)-3-hydroxy-1-(phenylthio)butan-2-aminium benzoate by micellar electrokinetic chromatography, with an analysis time of 25 min, was proposed. An electrolyte composed of sodium tetraborate buffer (pH 9.24; 25 mmol L-1), sodium dodecyl sulphate (9 mmol L-1) and methanol (10percent, v/v) was optimized using a mixed-level factorial design, with direct detection at 200 nm. After evaluating some figures of merit, such as selectivity, linearity, precision, limit of detection, limit of quantification, accuracy and robustness (using Youden's test), the method was successfully applied to the analysis of nelfinavir mesylate and its impurities in a pharmaceutical formulation. The optimized methodology is demonstrated to be useful in the determination of these analytes in a synthesis monitoring process, in raw materials and in pharmaceutical formulations, while offering low solvent consumption, requiring a small sample and using non-specific columns as advantages.

A synthesis of the HIV-protease inhibitor nelfinavir from D-tartaric acid

This letter describes a new synthesis of the HIV-protease inhibitor nelfinavir. The synthesis features a selective opening of a D-tartaric acid-derived cyclic sulfate with nitrogen nucleophiles.