Application of terpenoid coumarins in the treatment of gastric cancer
A technology for gastric cancer and drugs, applied in the fields of active ingredients of heterocyclic compounds, organic chemistry, digestive system, etc.
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[0011] 1. Invention compound 4-methyl-8-nitro-Z-hesperidolide (1), 4-methyl-5-hydroxyl-Z-hesperidolide (2), 4-methyl- 5-O-Neryl-Z-hesperidolide (3), 4-hydroxy-5-methyl-Z-hesperidolide (4), 4-hydroxy-5-methyl-8- Synthesis experiment of hesperidyl-Z-hesperidone (5), 4-hydroxy-5-methyl-6-hesperidyl-Z-hesperidolide (6).
[0012] (1) Experimental raw material: nerolidol
[0013] (2) Method Add a certain amount of nerol, catalytic amount of pyridine (Py), and anhydrous ether into a 150ml three-necked flask, and slowly add phosphorus tribromide dropwise under conditions of ice-water bath and nitrogen protection, with the temperature controlled at 0°C Anhydrous ether solution, keep 0 ℃ reaction, prepare neryl bromide; with phloroglucinol and ethyl acetoacetate, in POCl 3 Under catalysis, the intermediate 4-methyl-5,7-dihydroxycoumarin is generated by pechmann condensation reaction; with 3,5-dihydroxytoluene and dimethylformamide (DMF) in POCl 3 Under catalysis, the intermediate com...
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