Water → HCID 178519364, compound

HRID 455399Notes

Reaction equation

[H-].[Al+3].[Li+].[H-].[H-].[H-].C[O:8][C:9]([C:11]1[CH:35]=[CH:34][C:14]2[C@@H:15]3[C@H:20]([CH2:21][CH2:22][C:13]=2[CH:12]=1)[N:19]([C:23]([C:25]1[CH:33]=[CH:32][C:28]2[NH:29][CH:30]=[N:31][C:27]=2[CH:26]=1)=[O:24])[CH2:18][CH2:17][CH2:16]3)=O.O>O1CCCC1>[NH:29]1[C:28]2[CH:32]=[CH:33][C:25]([C:23]([N:19]3[C@@H:20]4[C@@H:15]([C:14]5[CH:34]=[CH:35][C:11]([CH2:9][OH:8])=[CH:12][C:13]=5[CH2:22][CH2:21]4)[CH2:16][CH2:17][CH2:18]3)=[O:24])=[CH:26][C:27]=2[N:31]=[CH:30]1

Participants

Conditions

Temperature: -10 °C

Procedure

Lithium aluminum hydride (1 mol/L in tetrahydrofuran, 0.5 mL) is added to a solution of cis-4-(1H-benzoimidazole-5-carbonyl)-1,2,3,4,4a,5,6,10b-octahydro-benzo[f]quinoline-8-carboxylic acid methyl ester (150 mg) in tetrahydrofuran (6 mL) cooled to −10° C. The resulting solution is stirred for 2 h while warming to ca. −3° C. in the cooling bath. Little water is added carefully and the resulting mixture is filtered over Celite. The filtrate is diluted with ethyl acetate and dried (MgSO4). The solvent is evaporated and the residue is triturated with ethyl acetate and dried to give the title compound as a solid. Yield: 56 mg (40% of theory); LC (method 1): tR=2.03 min; Mass spectrum (ESI+): m/z=362 [M+H]+.

Workup

temperaturewhile warming to ca. −3° C. in the cooling bath
filtrationthe resulting mixture is filtered over Celite
additionThe filtrate is diluted with ethyl acetate
dry with materialdried (MgSO4)
customThe solvent is evaporated
customthe residue is triturated with ethyl acetate
customdried

Sources & evidence

ORD record: ord-a915a2b96b8c423194c8266e22db229d
Source dataset: uspto-grants-2013_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08497281B2

Reaction notes

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