Novel 2-oxo-heterocyclic compounds and the pharmaceutical compositions comprising the same
A compound, oxo technology, applied in the direction of active ingredients of heterocyclic compounds, drug combinations, antipyretics, etc., can solve problems such as side effects, limit the use of conventional drugs, and cannot achieve satisfactory results, and achieve a strong inhibitory effect
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Embodiment 1
[0225] Example 1. Preparation of 3-[1-(2,4-dimethoxybenzyl)-2-oxo-2,5-dihydro-1H-pyrrol-3-yl]-N-hydroxyl propionamide ( 1e)
[0226]
[0227] Step 1. Preparation of allyl-(2,4-dimethoxybenzyl)amine (1b )
[0228] Under stirring, 0.32 ml of allyl bromide (3.66 mM) and 0.7 ml of diisopropylethylamine (3.99 mM) were added to 500 mg of 2,4-dimethoxybenzyl dissolved in dichloromethane In the reaction solution of amine (3.33 mM), the solution was left alone at room temperature. After the reaction mixture was neutralized with 10% NaOH solution, the mixture was extracted with chloroform, washed with saturated NaCl solution, washed with MgSO 4 Dry, filter, and concentrate in vacuo. The formed compound was purified by silica gel column chromatography using a solvent mixture of methanol and chloroform (1:9) as eluent to obtain 276 mg of allyl-(2,4-dimethoxybenzyl)amine (1b) ( Yield: 40%).
[0229] 1 H-NMR (300MHz, CDCl 3 )δ7.12(d, J=8.1Hz, 1H), 6.44-6.39(m, 2H), 5.99-5.86(m, 1...
Embodiment 2
[0239] Example 2. Preparation of 3-(1-benzyl-2-oxo-2,5-dihydro-1H-pyrrol-3-yl)-N-hydroxyl-propionamide (2e)
[0240] 3-(1-Benzyl-2-oxo-2,5-dihydro-1H-pyrrol-3-yl)-N-hydroxy-propionamide (2e) was prepared in a similar manner to that described in Example 1 above 1 (see Table 1).
Embodiment 3
[0241] Example 3. Preparation of N-hydroxy-3-(2-oxo-1-phenethyl-2,5-dihydro-1H-pyrrol-3-yl)-propionamide (3e)
[0242] N-Hydroxy-3-(2-oxo-1-phenethyl-2,5-dihydro-1H-pyrrol-3-yl)-propionamide (3e) was prepared in a similar manner to that described in the above examples 1 (see Table 1).
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