N-succinic acid mono-substituted indole (azole) spliced podophyllotoxin compound as well as preparation method and application thereof
A technology of podophyllotoxin and succinate, applied in the field of chemistry, can solve the problems of narrow anti-tumor spectrum, disorder, multi-drug resistance gastrointestinal function, etc.
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[0026] Embodiments of the present invention: 205.0mg indole 1a (1.75mmol), 297.5mg succinic anhydride (1.7eq, 2.975mmol), 21.5mg catalyst 4-dimethylaminopyridine (10%), 0.8 ml triethylamine and 5ml dichloromethane solution, reflux reaction for 12 hours, TLC detected that the reaction was basically complete, spin the solvent, add 40ml ethyl acetate to dilute, then add 1M hydrochloric acid solution, ethyl acetate repeated extraction, combined ethyl acetate layer , and the solvent was spin-dried and purified by silica gel column chromatography (eluent: V (petroleum ether): V (ethyl acetate) = 3:1 to 1:1) to obtain intermediate compound 2a. Take the above intermediate 2a (1.2mmol), 414.41mg podophyllotoxin (1mmol), 24.5mg catalyst 4-dimethylaminopyridine, 309.5mg dehydrating agent N,N'-dicyclohexylcarbodiimide, 8ml dichloromethane The solution was placed in the reaction tube and reacted for 2 hours. TLC detected that the reaction was basically complete. Add 50ml of dichloromethane...
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