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    • 11. 发明申请
    • PROCESS FOR THE PREPARATION OF CGRP ANTAGONIST
    • 制备CGRP拮抗剂的方法
    • WO2007120591A1
    • 2007-10-25
    • PCT/US2007/008702
    • 2007-04-06
    • MERCK & CO., INC.BELYK, KevinRIVERA, Nelo
    • BELYK, KevinRIVERA, Nelo
    • C07D471/04
    • C07D471/04
    • An efficient synthesis for the preparation of N -[(3 R ,6 S )-6-(2,3-difluorophenyl)-2-oxo-1-(2,2,2-trifluoroethyl)azepan-3-yl]-4-(2-oxo-2,3-dihydro-1H-imidazo[4,5-b]pyridin-1-yl)piperidine -1-carboxamide, by coupling (3 R ,6 S )-3-amino-6-(2,3-difluorophenyl)-1-(2,2,2-trifluoroethyl)azepan-2-one and 2-oxo-1-(4-piperidinyl)-2,3-dihydro-1 H -imidazo[4,5-b]pyridine dihydrochloride with 1,1'-carbonyldiimidazole (“CDI”) as carbonyl source; and an efficient preparation of the potassium salt of N-[(3 R, 6 S )-6-(2,3-difluorophenyl)-2-oxo-1-(2,2,2-trifluoroethyl)azepan-3-yl]-4-(2-oxo-2,3-dihydro-1H-imidazo[4,5-b]pyridin-1-yl)piperidine -1-carboxamide.
    • 制备N - [(3R,6S)-6-(2,3-二氟苯基)-2-氧代-1-(2,2,2-三氟乙基)氮杂环庚烷-3-基] -4- (3R,6S)-3-氨基-6-(2,3-二氢-1H-咪唑并[4,5-b]吡啶-1-基)哌啶-1-甲酰胺, (2,2-二氟苯基)-1-(2,2,2-三氟乙基)氮杂环庚烷-2-酮和2-氧代-1-(4-哌啶基)-2,3-二氢-1H-咪唑并[4,5-b] 吡啶二盐酸盐与1,1'-羰基二咪唑(“CDI”)作为羰基源; 并且有效制备N - [(3R,6S)-6-(2,3-二氟苯基)-2-氧代-1-(2,2,2-三氟乙基)氮杂环庚烷-3-基] - 4-(2-氧代-2,3-二氢-1H-咪唑并[4,5-b]吡啶-1-基)哌啶-1-甲酰胺。