Reaction #2370100

ord-35a6d95ae4c047ce99fb6c8107e6028c

Conditions

Detailed conditions
See reaction.notes.procedure_details.

Workup

  1. 1
    Otherbefore being quenched through the addition of water containing a small amount of TFA
  2. 2
    OtherReaction
  3. 3
    Otherpurified by reverse phase chromatography (Method J)
  4. 4
    ConcentrationThe appropriate fractions were concentrated
  5. 5
    OtherMaterial was then further purified by reverse phase chromatography (Method K) with the appropriate fractions
  6. 6
    Concentrationbeing concentrated (Genevac)

Procedure

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%).

Source

DOI: 10.6084/m9.figshare.5104873.v1Patent: US09138486B2uspto-grants-2015_09