1-Hydroxybenzotriazole → (S)-2-[4-(2-chloro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-4-methyl-pentanoic acid [3-(4-methoxy-benzyl)-[1,2,4]thiadiazol-5-yl]-amide

HRID 19104Notes

Reaction equation

HRID 19104 reaction equation
OC(C)(C)CN1C=C[C:6]([NH:9][C:10](=[O:30])[C@@H:11]([N:16]2[CH2:20][C:19]([O:21][C:22]3[CH:27]=[CH:26][CH:25]=[CH:24][C:23]=3[Cl:28])=[CH:18][C:17]2=[O:29])[CH2:12][CH:13]([CH3:15])[CH3:14])=[N:5]1.Cl.CN(C)CCCN=C=NCC.ON1C2C=CC=CC=2N=N1.[CH3:55][O:56][C:57]1[CH:69]=[CH:68][C:60]([CH2:61][C:62]2N=C(N)[S:64][N:63]=2)=[CH:59][CH:58]=1>ClCCl>[CH3:55][O:56][C:57]1[CH:69]=[CH:68][C:60]([CH2:61][C:62]2[N:5]=[C:6]([NH:9][C:10](=[O:30])[C@@H:11]([N:16]3[CH2:20][C:19]([O:21][C:22]4[CH:27]=[CH:26][CH:25]=[CH:24][C:23]=4[Cl:28])=[CH:18][C:17]3=[O:29])[CH2:12][CH:13]([CH3:14])[CH3:15])[S:64][N:63]=2)=[CH:59][CH:58]=1

Participants

6

Reactant 4

HCID 757711-HydroxybenzotriazoleHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 44240794(S)-2-[4-(2-Chloro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-4-methyl-pentanoic acid [1-(2-hydroxy-2-methyl-propyl)-1H-pyrazol-3-yl]-amideHCID 613728873-(4-Methoxybenzyl)-1,2,4-thiadiazol-5-amine

Product 1

HCID 57920080(S)-2-[4-(2-chloro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-4-methyl-pentanoic acid [3-(4-methoxy-benzyl)-[1,2,4]thiadiazol-5-yl]-amideYield 49%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Conditions

Temperature
25 °C

Procedure

To a solution of (S)-2-[4-(2-chloro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-4-methyl-pentanoic acid (prepared as in Example 64, 60 mg, 0.19 mmol) in dichloromethane (1.00 mL) was added 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (40 mg, 0.21 mmol) and 1-hydroxybenzotriazole (27 mg, 0.20 mmol). The resulting solution was stirred for 5 min before 3-(4-methoxy-benzyl)-[1,2,4]thiadiazol-5-ylamine (50 mg, 0.23 mmol) was added and the resulting mixture stirred at 25° C. overnight. The mixture was washed with saturated ammonium chloride (1 mL), evaporated and the crude product purified by HPLC (Gilson semi-prep; Supelcosil ABZ+Plus 12 μM 25 cm×21.2 mm column 20-95% acetonitrile/water) which afforded (S)-2-[4-(2-chloro-phenoxy)-2-oxo-2,5-dihydro-pyrrol-1-yl]-4-methyl-pentanoic acid [3-(4-methoxy-benzyl)-[1,2,4]thiadiazol-5-yl]-amide (48 mg, 49%) as a light yellow solid: HR-ES-MS m/z calculated for C26H27ClN4O4S [M+H]+ 527.1515, observed 527.1514; 1H NMR MHz, DMSO-d6) δ ppm 0.88 (d, J=6.6 Hz, 3H), 0.91 (d, J=6.6 Hz, 3H), 1.22 (t, J=7.5 Hz, 3H), 1.44 (br. s., 1H), 1.54-1.71 (m, 1H), 1.71-1.90 (m, 1H), 2.76 (q, J=7.5 Hz, 2H), 4.25 (d, J=18.4 Hz, 1H), 4.48 (d, J=18.4 Hz, 1H), 4.79 (s, 1H), 4.97 (dd, J=10.9, 4.8 Hz, 1H), 7.33 (td, J=7.8, 1.5 Hz, 1H), 7.43 (td, J=7.8, 1.4 Hz, 1H), 7.50 (dd, J=7.8, 1.5 Hz, 1H), 7.62 (dd, J=7.8, 1.4 Hz, 1H), 13.24 (s, 1H).

Workup

  1. additionwas added
  2. washThe mixture was washed with saturated ammonium chloride (1 mL)
  3. customevaporated
  4. customthe crude product purified by HPLC (Gilson semi-prep; Supelcosil ABZ+Plus 12 μM 25 cm×21.2 mm column 20-95% acetonitrile/water) which

Sources & evidence

ORD record
ord-9756dab7764e4c98894ebe31d0c520e4
Source dataset
uspto-grants-2010_06
Patent number
US07741327B2

Reaction notes

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