Sodium triacetoxyborohydride → alpha-(R)-(3-(S)-((4-(5-Fluoro-benzoimidazol-1-yl)-piperidin-1-ylmethyl))-4-(S)-phenylpyrrolidin-1-yl)-cyclohexaneacetic acid, 4-methoxy-benzyl ester

HRID 1068165Notes

Reaction equation

HRID 1068165 reaction equation
[CH:1]([C@@H:3]1[C@@H:7]([C:8]2[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=2)[CH2:6][N:5]([C@H:14]([CH:27]2[CH2:32][CH2:31][CH2:30][CH2:29][CH2:28]2)[C:15]([O:17][CH2:18][C:19]2[CH:24]=[CH:23][C:22]([O:25][CH3:26])=[CH:21][CH:20]=2)=[O:16])[CH2:4]1)=O.[NH:33]1[CH2:38][CH2:37][CH:36]([N:39]2[C:43]3[CH:44]=[CH:45][C:46]([F:48])=[CH:47][C:42]=3[N:41]=[CH:40]2)[CH2:35][CH2:34]1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>C1COCC1.CN(C=O)C>[F:48][C:46]1[CH:45]=[CH:44][C:43]2[N:39]([CH:36]3[CH2:35][CH2:34][N:33]([CH2:1][C@@H:3]4[C@@H:7]([C:8]5[CH:9]=[CH:10][CH:11]=[CH:12][CH:13]=5)[CH2:6][N:5]([C@H:14]([CH:27]5[CH2:32][CH2:31][CH2:30][CH2:29][CH2:28]5)[C:15]([O:17][CH2:18][C:19]5[CH:24]=[CH:23][C:22]([O:25][CH3:26])=[CH:21][CH:20]=5)=[O:16])[CH2:4]4)[CH2:38][CH2:37]3)[CH:40]=[N:41][C:42]=2[CH:47]=1

Participants

6

Reactant 3

HCID 5049666Sodium triacetoxyborohydrideHCID 211931111-Piperidin-4-yl-5-fluoro-1-H-benzoimidazoleHCID 53654320alpha-(R)-(3-(R)-formyl-4-(S)-phenylpyrrolidin-1-yl)-cyclohexaneacetic acid 4-methoxybenzyl ester

Product 1

HCID 86757026alpha-(R)-(3-(S)-((4-(5-Fluoro-benzoimidazol-1-yl)-piperidin-1-ylmethyl))-4-(S)-phenylpyrrolidin-1-yl)-cyclohexaneacetic acid, 4-methoxy-benzyl esterYield 73.3%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8028TetrahydrofuranSolvent

Procedure

The title compound was prepared from 40 mg of α-(R)-(3-(R)-formyl-4-(S)-phenylpyrrolidin-1-yl)-cyclohexaneacetic acid, 4-methoxy-benzyl ester (prepared above as Aldehyde 5), 40 mg 1-piperidin-4-yl-5-fluoro-1-H-benzoimidazole (from Step C ) and 60 mg of sodium triacetoxyborohydride in 4 mL of THF and 1 mL of DMF, using a procedure analogous to that described in Example 95, Step D to provide 43 mg of the title compound as an oil.

Sources & evidence

ORD record
ord-870ecb71469e44fa9ffa6f8faec9bdf1
Source dataset
uspto-grants-2001_06
Patent number
US06248755B1

Reaction notes

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