Sodium borohydride → (S)-2-(Hydroxymethyl)-6,8-dihydrospiro[cyclopenta[g]quinoline-7,3'-pyrrolo[2,3-b]pyridin]-2'(1'H)-one

HRID 1623068Notes

Reaction equation

HRID 1623068 reaction equation
[O:1]=[C:2]1[NH:10][C:5]2=[N:6][CH:7]=[CH:8][CH:9]=[C:4]2[C@:3]21[CH2:24][C:13]1[CH:14]=[C:15]3[C:20](=[CH:21][C:12]=1[CH2:11]2)[N:19]=[C:18]([CH:22]=[O:23])[CH:17]=[CH:16]3.[BH4-].[Na+]>CO.CS(C)=O>[OH:23][CH2:22][C:18]1[CH:17]=[CH:16][C:15]2[C:20](=[CH:21][C:12]3[CH2:11][C@:3]4([C:4]5[C:5](=[N:6][CH:7]=[CH:8][CH:9]=5)[NH:10][C:2]4=[O:1])[CH2:24][C:13]=3[CH:14]=2)[N:19]=1

Participants

5

Reactant 2

HCID 4311764Sodium borohydrideHCID 59594285(S)-2'-Oxo-1',2',6,8-tetrahydrospiro[cyclopenta[g]quinoline-7,3'-pyrrolo[2,3-b]pyridine]-2-carbaldehyde2×

Product 1

HCID 67016575(S)-2-(Hydroxymethyl)-6,8-dihydrospiro[cyclopenta[g]quinoline-7,3'-pyrrolo[2,3-b]pyridin]-2'(1'H)-one

Reagents, catalysts & solvents 2

HCID 679Dimethyl SulfoxideSolventHCID 887MethanolSolvent

Procedure

To a stirred suspension of (S)-2′-oxo-1′,2′,6,8-tetrahydrospiro[cyclopenta[g]quinoline-7,3′-pyrrolo[2,3-b]pyridine]-2-carbaldehyde (80 mg, 025 mmol, described in Intermediate 6) in a mixture of MeOH (5 mL) and DMSO (1 mL) was added sodium borohydride (19 mg, 0.51 mmol). The resulting mixture was stirred at ambient temperature for 1 h, then the MeOH was removed in vacuo. The residue was partitioned between saturated aqueous NaHCO3 (20 mL) and CH2Cl2 (20 mL). The aqueous layer was extracted further with CH2Cl2 (2×20 mL). The combined organic extracts were dried over Na2—SO4, filtered, and concentrated in vacuo to give the title compound in sufficient purity for use in the next step. MS: m/z=318 (M+1).

Workup

  1. customthe MeOH was removed in vacuo
  2. customThe residue was partitioned between saturated aqueous NaHCO3 (20 mL) and CH2Cl2 (20 mL)
  3. extractionThe aqueous layer was extracted further with CH2Cl2 (2×20 mL)
  4. dry with materialThe combined organic extracts were dried over Na2—SO4
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-75b06855600944908b988edaa54d362f
Source dataset
uspto-grants-2014_07
Patent number
US08778957B2

Reaction notes

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