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    INDUSTRIAL PROCESS FOR THE SYNTHESIS OF 17alpha-ACETOXY-11beta-[4-(N,N-DIMETHYL-AMINO)-PHENYL]-19-NORPREGNA-4,9-DIENE-3,20-DIONE AND NEW INTERMEDIATES OF THE PROCESS
    1.
    发明申请
    INDUSTRIAL PROCESS FOR THE SYNTHESIS OF 17alpha-ACETOXY-11beta-[4-(N,N-DIMETHYL-AMINO)-PHENYL]-19-NORPREGNA-4,9-DIENE-3,20-DIONE AND NEW INTERMEDIATES OF THE PROCESS 有权

    公开(公告)号：US20090187032A1

    公开(公告)日：2009-07-23

    申请号：US12303160

    申请日：2007-05-18

    申请人： Lajosne Dancsi ,  Gyorgy Visky ,  Zoltan Tuba ,  Janos Csorgei ,  Csaba Molnar ,  Endrene Magyari

    发明人： Lajosne Dancsi ,  Gyorgy Visky ,  Zoltan Tuba ,  Janos Csorgei ,  Csaba Molnar ,  Endrene Magyari

    IPC分类号： C07J3/00 ,  C07D317/72

    CPC分类号： C07J21/006 ,  C07J31/006 ,  C07J41/0083 ,  C07J71/001

    摘要： The present invention relates to a new industrial process for the synthesis of solvate-free 17α-acetoxy-11β-[4-(N,N-dimethyl-amino)-phenyl]-19-norpregna-4,9-diene-3,20-dione [CDB-2914] of formula (I) which is a strong antiprogestogene and antiglucocorticoid agent. The invention also relates to compounds of formula (VII) and (VIII) used as intermediates in the process.The process according to the invention is the following:i) 3-(ethylene-dioxy)-estra-5(10),9(11)-diene-17-one of formula (X) is reacted with potassium acetilyde formed in situ in dry tetrahydrofuran by known method,ii) the obtained 3-(ethylene-dioxy)-17α-ethynyl-17β-hydroxy-estra-5(10),9(11)-diene of formula (IX) is reacted with phenylsulfenyl chloride in dichloromethane in the presence of triethylamine and acetic acid,iii) the obtained isomeric mixture of 3-(ethylene-dioxy)-21-(phenyl-sulfinyl)-19-norpregna-5(10),9(11),17(20),20-tetraene of formula (VIII) is reacted first with sodium methoxide in methanol, then with trimethyl phosphite,iv) the obtained 3-(ethylene-dioxy)-17α-hydroxy-20-methoxy-19-norpregna-5(10),9(11),20-triene of formula (VII) is reacted with hydrogen chloride in methanol, thenv) the obtained 3-(ethylene-dioxy)-17α-hydroxy-19-norpregna-5(10),9(11)-diene-20-one of formula (VI) is reacted with ethylene glycol in dichloromethane in the presence of trimethyl orthoformate and p-toluenesulfonic acid by known method,vi) the obtained 3,3,20,20-bis(ethylene-dioxy)-17α-hydroxy-19-norpregna-5(10),9(11)-diene of formula (V) is reacted with hydrogen peroxide in a mixture of pyridine and dichloromethane in the presence of hexachloroacetone by known method,vii) the obtained 3,3,20,20-bis(ethylene-dioxy)-17α-hydroxy-5,10-epoxy-19-norpregn-9(11)-ene of formula (IV), containing approximately a 1:1 mixture of 5α,10α- and 5β,10β-epoxides, is isolated from the solution and reacted with a Grignard reagent obtained from 4-bromo-N,N-dimethyl-aniline in tetrahydrofuran in the presence of copper(I) chloride catalyst without separation of the isomers by known method,viii) the obtained 3,3,20,20-bis(ethylene-dioxy)-5α,17α-dihydroxy-11β-[4-(N,N-dimethylamino)-phenyl]-19-norpregn-9(11)-ene of formula (III) is reacted with potassium hydrogensulfate in water by known method,ix) the obtained 11β-[4-(N,N-dimethylamino)-phenyl]-17α-hydroxy-19-norpregn-4,9-diene-3,20-dione of formula (II) is acetylated with acetic anhydride in the presence of perchloric acid by known method, finallyx) the solvate-free compound of formula (I) is liberated from the obtained solvate containing compound of formula (I) in a 1:1 mixture of ethanol and water at 70° C.