تفاعل #324425

معادلة التفاعل

water MeOtBu

Water

title compound

tert-butyl (S)-1-((S)-1-((2S,4S)-4-azido-2-((R)-1,2,3,4-tetrahydronaphthalen-1-ylcarbamoyl)pyrrolidin-1-yl)-3,3-dimethyl-1-oxobutan-2-ylamino)-1-oxopropan-2-yl(methyl)carbamate

Ph3P

→

title compound

tert-butyl (S)-1-((S)-1-((2S,4S)-4-amino-2-((R)-1,2,3,4-tetrahydronaphthalen-1-ylcarbamoyl)pyrrolidin-1-yl)-3,3-dimethyl-1-oxobutan-2-ylamino)-1-oxopropan-2-yl(methyl)carbamate

المذيبات

THF

ظروف التفاعل

المعالجة

1. 1
   workup.ADDITIONwas added
2. 2
   أخرىto quench
3. 3
   أخرىthe reaction
4. 4
   أخرىThe two phases were separated
5. 5
   استخلاصThe aqueous phase was extracted by EtOAc twice
6. 6
   غسيلthe combined organic phase was washed by brine
7. 7
   تجفيفdried over sodium sulfate
8. 8
   تركيزconcentrated under reduced pressure
9. 9
   أخرىThe residue was chromatographed on silica gel
10. 10
    غسيلeluting with EtOAc

الإجراء التجريبي

To a solution of the title compound of Example 3 (1.7 g, 2.9 mmol) in 10.6 mL dry THF was added Ph3P (765 mg, 2.9 mmol) at room temperature. Water (78.3 μL, 4.35 mmol) was added drop wise and the reaction mixture was allowed to stir for 16 hours at room temperature. A 1:1 mixture of water/MeOtBu was added to quench the reaction. The two phases were separated. The aqueous phase was extracted by EtOAc twice, and then the combined organic phase was washed by brine, dried over sodium sulfate and concentrated under reduced pressure. The residue was chromatographed on silica gel, eluting with EtOAc, the 5% to 15% MeOH/methylene chloride to give the title compound as a white foam-like solid. 1H NMR (CDCl3): consistent with proposed structure.

المصدر