Реакция #162004

Уравнение реакции

#115

N,2-dimethylalanyl-N-{(1S,2R)-4-{(2S)-2-[(1R,2R)-3-{[(1S)-1-carboxy-2-phenylethyl]amino}-1-methoxy-2-methyl-3-oxopropyl]pyrrolidin-1-yl}-2-methoxy-1-[(1S)-1-methylpropyl]-4-oxobutyl}-N-methyl-L-valinamide-trifluoroacetic acid salt

5-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)pentanoic acid

HATU

Hunig's base

→

mv#115

Выход 3.3%

N-[5-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)pentanoyl]-N,2-dimethylalanyl-N-{(1S,2R)-4-{(2S)-2-[(1R,2R)-3-{[(1S)-1-carboxy-2-phenylethyl]amino}-1-methoxy-2-methyl-3-oxopropyl]pyrrolidin-1-yl}-2-methoxy-1-[(1S)-1-methylpropyl]-4-oxobutyl}-N-methyl-L-valinamide

Выход 3.3%

Растворители

dichloromethane

DMSO

dichloromethane

DMF

DMF

Условия реакции

Обработка

1. 1
   Другоеbefore being quenched through the addition of water containing a small amount of TFA
2. 2
   ДругоеReaction
3. 3
   Другоеpurified by reverse phase chromatography (Method J)
4. 4
   КонцентрированиеThe appropriate fractions were concentrated
5. 5
   ДругоеMaterial was then further purified by reverse phase chromatography (Method K) with the appropriate fractions
6. 6
   Концентрированиеbeing concentrated (Genevac)

Методика

To a stirring solution of 5-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)pentanoic acid (12 mg, 0.061 mM) in 0.4 mL of dichloromethane, and 0.1 mL of DMF, HATU (23.2 mg, 0.061 mM) was added followed by Hunig's base (0.033 mL, 0.188 mM). The reaction was allowed to stir for 5 minutes before #115 (39 mg, 0.047 mM) was added as a solution in 0.4 mL of dichloromethane, and 0.1 mL of DMF. The reaction was allowed to stir at room temperature for 3 hours and 15 minutes before being quenched through the addition of water containing a small amount of TFA. Reaction was then reduced down. Crude material was dissolved with DMSO and purified by reverse phase chromatography (Method J). The appropriate fractions were concentrated then (Genevac). Material was then further purified by reverse phase chromatography (Method K) with the appropriate fractions being concentrated (Genevac). Material was then transferred to a small vial using dichloromethane and methanol before being reduced down (Genevac) to afford mv#115 (1.4 mg, 3.3%) oil/solid mix. HPLC (Protocol A at 45° C.): m/z 897.5 [M+H+], retention time=9.149 minutes (purity >97%).

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