7-substituted-4-aryl coumarins compound, and preparation method and application thereof
A technology for aryl coumarins and compounds, applied in the field of 7-substituted-4-aryl coumarins and their preparation, can solve the problems of poor drug selectivity, toxic and side effects, etc., and achieve mild reaction conditions and cheap reagents , The effect of easy synthesis method
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0038] Example 1 N-[2-(8-methyl-2-carbonyl-4-phenyl-2H-benzopyran-7-oxygen)acetyl]-L-prolineamide (T 1 ) preparation
[0039] Synthetic route such as figure 1 Shown:
[0040] (1) Synthesis of ethyl benzoyl acetate (beta ketoester)
[0041] Weigh benzoic acid, add it to dissolve in absolute ethanol, slowly add concentrated H 2 SO 4 , stop the reaction after heating to reflux for 16h, remove ethanol by rotary evaporation, and use saturated Na 2 CO 3 Adjust the pH to 8-9, extract 3 times with ethyl acetate, combine the organic phases, anhydrous Na 2 SO 4 After drying, the ethyl acetate was removed by rotary evaporation to obtain a colorless oily liquid (ethyl benzoate), which was directly used in the next reaction.
[0042] Weigh ethyl benzoate, add NaOEt and ethyl acetate, heat to reflux for 10h, stop the reaction, remove ethyl acetate by rotary evaporation, adjust pH to 8-9 with 2mol / L HCl, extract 3 times with ethyl acetate, combine Organic phase, anhydrous Na 2 SO ...
Embodiment 2
[0052] Example 2 2-(8-Methyl-2-carbonyl-4-phenyl-2H-benzopyran-7-oxygen)acetamide (T 2 ) preparation
[0053] The preparation method is the same as in Example 1, replacing L-prolinamide with ammonium chloride. Yield: 51.28%, mp: 268-271°C.
[0054] 1 H-NMR (400MHz, DMSO-d 6 ): δ7.57-7.58(t, 3H, Ar-H), 7.46-7.53(m, 4H, Ar-H), 7.23-7.26(d, 1H, J=8.8Hz, -CON H 2 ), 6.91-6.93 (d, 1H, J=8.8Hz, -CON H 2 ), 6.26(s, 1H, Ar-H), 4.60(s, 2H, -CO-CH 2 -O-), 2.32(s, 3H, Ar-CH 3 )ppm. EI-MS (m / z): 309 (M + ).
Embodiment 3
[0055] Example 3 N-(2-(dimethylamino)ethyl)-2-(8-methyl-2-carbonyl-4-phenyl-2H-benzopyran-7-oxygen)acetamide (T 3 ) preparation
[0056] The preparation method is the same as in Example 1, except that L-prolineamide is replaced by N,N-dimethyl-1,2-ethylenediamine. Yield: 61.22%, mp: 238-241°C.
[0057] 1H-NMR (400MHz, DMSO-d 6 ): δ7.92-7.94 (t, 1H, -CH 2 CON H -), 7.56-7.58 (t, 3H, Ar-H), 7.50-7.52 (q, 2H, Ar-H), 7.22-7.24 (d, 1H, J=8.8Hz, 5'Ar-H), 6.93 -6.95(d, 1H, J=9.2Hz, 6'Ar-H), 6.26(s, 1H, 3'Ar-H), 4.64(s, 2H, -CO-CH 2 -O-), 3.22-3.25(t, 2H, -NHC H 2 CH 2 N(CH 3 ) 2 ), 2.30-2.33 (t, 5H, -NHCH 2 C H 2 N(CH 3 ) 2 and Ar-CH 3 ), 2.15(s, 6H, -NHCH 2 CH 2 N(C H 3 ) 2 )ppm. ESI-MS(m / z): 381.2[M+H] + .
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com