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    • 1. 发明专利
    • SK278225B6
    • 1996-04-03
    • SK95890
    • 1990-02-28
    • CABRI WALTERCANDIANI ILARIADE BERNARDINIS SILVIAFRANCALANCI FRANCO
    • CABRI WALTERCANDIANI ILARIADE BERNARDINIS SILVIAFRANCALANCI FRANCO
    • B01J31/12C07B61/00B01J27/128C07C46/00C07C49/423C07C49/727C07C50/36C07C50/38
    • METHOD FOR PREPARATION OF ANTHRACYCLINONES The preparation method of anthracyclinones of the general formula I, wherein R means group of the formula COOR1, in which R1 means a hydrogen atom or methyl, resides in following: in the first stage the 13-keto group of the 4-demethyl-3- -deoxydaunomycinone is protected by working up with the ethylene glycol; in the second stage the resultant 4-demethyl-13- -dioxolanyl-7-deoxydaunomycinone reacts with the sulphonatic agent of the formula R'-SO2-X, in which X means the halogene atom or the group of the formula -O-SO2-R' and R' means the trifluoromethyl, p-fluorophenyl or p-tolyl group; in the third stage the resultant 4-demethyl-13-dioxolanyl-7- -deoxydaunomycinone of the general formula V reacts with the nucleophilic agent of the general formula R1OH in which R1 has a meaning listed above, and with the carbon monoxyde under presence of the triethylamine and the catalitic amount of the palladium complex with chelating ligand; and in the fourth stage the resultant 4-demethyl-4-carboxyalkyl-7-deoxy-13- -dioxolanyldaunomycinone of the general formula VII reacts with the bromine solution in the carbon tetrachloride for introduction of the alpha-hydroxy group into the position 7 of the general formula VII compound, then the 13-dioxolanyl protective group is removal and, after chromatographic treatment the required pure compound of the general formula I is obtained.