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    • 2. 发明专利
    • DE69714875D1
    • 2002-10-02
    • DE69714875
    • 1997-01-23
    • DUPHAR INT RES
    • BUIZER NICOLAASKRUSE CHRIS GSCHENK KLARA MSHADID BELAL
    • C07D317/48C07C205/22C07C205/26C07C205/37C07C205/43C07C217/84C07D265/00C07D265/36C07D279/16C07D303/20C07D317/62C07D319/20C07D327/06
    • The invention relates to a method for the stereoselective preparation of a hetero-bicyclic alcohol enantiomer, characterized in that a substantially pure enantiomer of the general formula wherein X is O, S, NH or N-(C1-C4)alkyl; Y1 and Y2 are each independently hydrogen or substituents selected from halogen, (C1-C4)alkyl, (C1-C4)alkoxy, (C1-C4)haloalkyl, formyl, nitro and cyano; the C*-atom has either the R or the S configuration; is prepared from a compound of the general formula wherein R1 is hydrogen or a suitable protective group and R2 is hydrogen or wherein R1 and R2 together form an optionally mono- or di-(C1-C3)alkyl substituted methylene bridge; by the following successive reaction steps: (i) reaction with a compound of the general formula wherein Z is a hydroxy group or a suitable leaving group, R3 is a hydroxy-protective group and R4 is a halogen atom; or wherein R3 and R4 together constitute a valence bond or a biradical of the formula -C(R11)2-O-, wherein R11 is a straight or branched (C1-C4)alkyl group and wherein the C*-atom has either the R or the S configuration; (ii) subjection of the compound formed to a deprotection/ring-closure reaction; (iii) optionally deprotection of the hydroxy group of the ring-closed product. The invention further relates to enantiomerically pure intermediates, the preparation of these intermediates and the preparation of a starting compound.
    • 3. 发明专利
    • AT222902T
    • 2002-09-15
    • AT97200185
    • 1997-01-23
    • DUPHAR INT RES
    • BUIZER NICOLAASKRUSE CHRIS GSCHENK KLARA MSHADID BELAL
    • C07D317/48C07C205/22C07C205/26C07C205/37C07C205/43C07C217/84C07D265/00C07D265/36C07D279/16C07D303/20C07D317/62C07D319/20C07D327/06
    • The invention relates to a method for the stereoselective preparation of a hetero-bicyclic alcohol enantiomer, characterized in that a substantially pure enantiomer of the general formula wherein X is O, S, NH or N-(C1-C4)alkyl; Y1 and Y2 are each independently hydrogen or substituents selected from halogen, (C1-C4)alkyl, (C1-C4)alkoxy, (C1-C4)haloalkyl, formyl, nitro and cyano; the C*-atom has either the R or the S configuration; is prepared from a compound of the general formula wherein R1 is hydrogen or a suitable protective group and R2 is hydrogen or wherein R1 and R2 together form an optionally mono- or di-(C1-C3)alkyl substituted methylene bridge; by the following successive reaction steps: (i) reaction with a compound of the general formula wherein Z is a hydroxy group or a suitable leaving group, R3 is a hydroxy-protective group and R4 is a halogen atom; or wherein R3 and R4 together constitute a valence bond or a biradical of the formula -C(R11)2-O-, wherein R11 is a straight or branched (C1-C4)alkyl group and wherein the C*-atom has either the R or the S configuration; (ii) subjection of the compound formed to a deprotection/ring-closure reaction; (iii) optionally deprotection of the hydroxy group of the ring-closed product. The invention further relates to enantiomerically pure intermediates, the preparation of these intermediates and the preparation of a starting compound.
    • 6. 发明专利
    • NO315515B1
    • 2003-09-15
    • NO970281
    • 1997-01-22
    • DUPHAR INT RES
    • BUIZER NICOLAASKRUSE CHRIS GSCHENK KLARA MSHADID BELAL
    • C07D317/48C07C205/22C07C205/26C07C205/37C07C205/43C07C217/84C07D265/00C07D265/36C07D279/16C07D303/20C07D317/62C07D319/20C07D327/06
    • The invention relates to a method for the stereoselective preparation of a hetero-bicyclic alcohol enantiomer, characterized in that a substantially pure enantiomer of the general formula wherein X is O, S, NH or N-(C1-C4)alkyl; Y1 and Y2 are each independently hydrogen or substituents selected from halogen, (C1-C4)alkyl, (C1-C4)alkoxy, (C1-C4)haloalkyl, formyl, nitro and cyano; the C*-atom has either the R or the S configuration; is prepared from a compound of the general formula wherein R1 is hydrogen or a suitable protective group and R2 is hydrogen or wherein R1 and R2 together form an optionally mono- or di-(C1-C3)alkyl substituted methylene bridge; by the following successive reaction steps: (i) reaction with a compound of the general formula wherein Z is a hydroxy group or a suitable leaving group, R3 is a hydroxy-protective group and R4 is a halogen atom; or wherein R3 and R4 together constitute a valence bond or a biradical of the formula -C(R11)2-O-, wherein R11 is a straight or branched (C1-C4)alkyl group and wherein the C*-atom has either the R or the S configuration; (ii) subjection of the compound formed to a deprotection/ring-closure reaction; (iii) optionally deprotection of the hydroxy group of the ring-closed product. The invention further relates to enantiomerically pure intermediates, the preparation of these intermediates and the preparation of a starting compound.
    • 7. 发明专利
    • DK0786459T3
    • 2003-01-06
    • DK97200185
    • 1997-01-23
    • DUPHAR INT RES
    • BUIZER NICOLAASKRUSE CHRIS GSCHENK KLARA MSHADID BELAL
    • C07D317/48C07C205/22C07C205/26C07C205/37C07C205/43C07C217/84C07D265/00C07D265/36C07D279/16C07D303/20C07D317/62C07D319/20C07D327/06
    • The invention relates to a method for the stereoselective preparation of a hetero-bicyclic alcohol enantiomer, characterized in that a substantially pure enantiomer of the general formula wherein X is O, S, NH or N-(C1-C4)alkyl; Y1 and Y2 are each independently hydrogen or substituents selected from halogen, (C1-C4)alkyl, (C1-C4)alkoxy, (C1-C4)haloalkyl, formyl, nitro and cyano; the C*-atom has either the R or the S configuration; is prepared from a compound of the general formula wherein R1 is hydrogen or a suitable protective group and R2 is hydrogen or wherein R1 and R2 together form an optionally mono- or di-(C1-C3)alkyl substituted methylene bridge; by the following successive reaction steps: (i) reaction with a compound of the general formula wherein Z is a hydroxy group or a suitable leaving group, R3 is a hydroxy-protective group and R4 is a halogen atom; or wherein R3 and R4 together constitute a valence bond or a biradical of the formula -C(R11)2-O-, wherein R11 is a straight or branched (C1-C4)alkyl group and wherein the C*-atom has either the R or the S configuration; (ii) subjection of the compound formed to a deprotection/ring-closure reaction; (iii) optionally deprotection of the hydroxy group of the ring-closed product. The invention further relates to enantiomerically pure intermediates, the preparation of these intermediates and the preparation of a starting compound.