Hydroxyamine hydrochloride → (S)-1-[3-Ethyl-5-(1-methyl-1H-tetrazol-5-yl)-phenyl]-3-{1-[2-(4-fluorophenyl)-2-hydroxyimino-ethyl]-piperidin-3-ylmethyl}-urea

HRID 896562Notes

Reaction equation

HRID 896562 reaction equation
[CH2:1]([C:3]1[CH:4]=[C:5]([NH:15][C:16]([NH:18][CH2:19][C@@H:20]2[CH2:25][CH2:24][CH2:23][N:22]([CH2:26][C:27]([C:29]3[CH:34]=[CH:33][C:32]([F:35])=[CH:31][CH:30]=3)=O)[CH2:21]2)=[O:17])[CH:6]=[C:7]([C:9]2[N:13]([CH3:14])[N:12]=[N:11][N:10]=2)[CH:8]=1)[CH3:2].Cl.[NH2:37][OH:38]>N1C=CC=CC=1>[CH2:1]([C:3]1[CH:4]=[C:5]([NH:15][C:16]([NH:18][CH2:19][C@@H:20]2[CH2:25][CH2:24][CH2:23][N:22]([CH2:26][C:27]([C:29]3[CH:34]=[CH:33][C:32]([F:35])=[CH:31][CH:30]=3)=[N:37][OH:38])[CH2:21]2)=[O:17])[CH:6]=[C:7]([C:9]2[N:13]([CH3:14])[N:12]=[N:11][N:10]=2)[CH:8]=1)[CH3:2]

Participants

4

Reactant 2

HCID 443297Hydroxyamine hydrochlorideHCID 69736343(S)-1-[3-ethyl-5-(1-methyl-1H-tetrazol-5-yl)-phenyl]-3-{1-[2-(4-fluorophenyl)-2-oxo-ethyl]-piperidin-3-ylmethyl}-urea

Product 1

HCID 86591726(S)-1-[3-Ethyl-5-(1-methyl-1H-tetrazol-5-yl)-phenyl]-3-{1-[2-(4-fluorophenyl)-2-hydroxyimino-ethyl]-piperidin-3-ylmethyl}-ureaYield 50%

Reagents, catalysts & solvents 1

HCID 1049PyridineSolvent

Procedure

A solution of (S)-1-[3-ethyl-5-(1-methyl-1H-tetrazol-5-yl)-phenyl]-3-{l-[2-(4-fluorophenyl)-2-oxo-ethyl]-piperidin-3-ylmethyl}-urea (20 mg, 42 μmol) in pyridine (0.5 mL) was treated with hydroxylamine hydrochloride (6 mg, 82 μmol) and stirred at room temperature for 16 hours. The solution was concentrated under vacuum, and the residue was purified by flash chromatography, eluting with 2.5% methanol in dichloromethane, containing 0.25% aqueous ammonia, to provide a white glassy solid (10 mg, 50%). 1H NMR (300 MHz, CDCl3) δ8.14 (s, 1H), 7.59 (s, 1H), 7.54 (m, 2H), 7.48 (s, 1H), 7.28 (s, 1H), 7.00 (t, J=9 Hz, 2H), 6.15 (bt, 1H), 4.16 (s, 3H), 3.78 (ab, J=15 Hz, 2H), 3.19 (m, 2H), 3.06 (m, 1H), 2.95 (m, 1H), 2.60 (q, J=8 Hz, 2H), 2.26 (m, 1H), 2.09 (m, 1H), 1.78 (m, 3H), 1.60 (m, 1H), 1.19 (t, J=8 Hz, 3H), 1.10 (m, 1H). Mass spec (ES+) m/z 495.4 (M+H+).

Workup

  1. concentrationThe solution was concentrated under vacuum
  2. customthe residue was purified by flash chromatography
  3. washeluting with 2.5% methanol in dichloromethane
  4. additioncontaining 0.25% aqueous ammonia

Sources & evidence

ORD record
ord-7ec81ed202824c56b0925935cef17b28
Source dataset
uspto-grants-2005_07
Patent number
US06919356B2

Reaction notes

Loading…