반응 #510182

반응 방정식

(S)-3-Amino-3-phenylpropan-1-ol hydrochloride

4-(tert-butoxycarbonylamino)-1-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)piperidine-4-carboxylic acid

Intermediate 21

4-(tert-butoxycarbonylamino)-1-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)piperidine-4-carboxylic acid

DIPEA

O-(7-azabenzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluorophosphate

→

(S)-tert-butyl 4-(3-hydroxy-1-phenylpropylcarbamoyl)-1-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)piperidin-4-ylcarbamate

수율 48.9%

용매

DMA

반응 조건

후처리

1. 1
   기타The reaction mixture was evaporated to dryness
2. 2
   workup.ADDITIONthen diluted with EtOAc (300 mL)
3. 3
   세척washed sequentially with water (50 mL) and saturated brine (50 mL)
4. 4
   건조The organic layer was dried over MgSO4
5. 5
   여과filtered
6. 6
   기타evaporated
7. 7
   기타to afford crude product
8. 8
   기타The crude product was purified by flash silica chromatography, elution gradient 2 to 6% MeOH with ammonia in DCM
9. 9
   기타Fractions were evaporated

실험 절차

(S)-3-Amino-3-phenylpropan-1-ol hydrochloride (260 mg, 1.38 mmol) was added in one portion to 4-(tert-butoxycarbonylamino)-1-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)piperidine-4-carboxylic acid (Intermediate 21) (500 mg, 1.38 mmol) and DIPEA (0.967 mL, 5.53 mmol) in DMA (5 mL). O-(7-azabenzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluorophosphate (579 mg, 1.52 mmol) was added and the resulting solution was stirred at 20° C. for 24 hours. The reaction mixture was evaporated to dryness then diluted with EtOAc (300 mL), and washed sequentially with water (50 mL) and saturated brine (50 mL). The organic layer was dried over MgSO4, filtered and evaporated to afford crude product. The crude product was purified by flash silica chromatography, elution gradient 2 to 6% MeOH with ammonia in DCM. Fractions were evaporated to afford (S)-tert-butyl 4-(3-hydroxy-1-phenylpropylcarbamoyl)-1-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)piperidin-4-ylcarbamate (334 mg, 48.8%) as a white solid. The product (334 mg, 0.67 mmol) was suspended in dioxane (5.00 mL) and 4M hydrogen chloride in dioxane (0.961 mL, 27.67 mmol) added. The reaction was stirred at ambient temperature for 2 hours. The crude product was purified by ion exchange chromatography, using an SCX column. The desired product was eluted from the column using 3.5N ammonia/MeOH and pure fractions were evaporated to dryness. The resulting gum was triturated with EtOAc to give a solid which was collected by filtration and dried under vacuum to give (S)-4-amino-N-(3-hydroxy-1-phenylpropyl)-1-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)piperidine-4-carboxamide (93 mg, 17.0%) as an off white solid.

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