4-Ethoxycarbonylphenylboronic acid → 4'-[3-methyl-4-((R)-1-phenyl-ethoxycarbonylamino)-isoxazol-5-yl]-biphenyl-4-carboxylic acid ethyl ester
Reaktionsgleichung
[C:1]1([C@H:7]([O:9][C:10](=[O:25])[NH:11][C:12]2[C:13]([CH3:24])=[N:14][O:15][C:16]=2[C:17]2[CH:22]=[CH:21][C:20](Br)=[CH:19][CH:18]=2)[CH3:8])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[CH2:26]([O:28][C:29]([C:31]1[CH:36]=[CH:35][C:34](B(O)O)=[CH:33][CH:32]=1)=[O:30])[CH3:27]>>[CH2:26]([O:28][C:29]([C:31]1[CH:36]=[CH:35][C:34]([C:20]2[CH:21]=[CH:22][C:17]([C:16]3[O:15][N:14]=[C:13]([CH3:24])[C:12]=3[NH:11][C:10]([O:9][C@@H:7]([C:1]3[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=3)[CH3:8])=[O:25])=[CH:18][CH:19]=2)=[CH:33][CH:32]=1)=[O:30])[CH3:27]Komponenten
3
Versuchsvorschrift
Following the procedure described in Example 17, Step 2, [5-(4-bromo-phenyl)-3-methyl-isoxazol-4-yl]-carbamic acid (R)-1-phenyl-ethyl ester and 4-ethoxycarbonylphenylboronic acid were reacted to provide 4′-[3-methyl-4-((R)-1-phenyl-ethoxycarbonylamino)-isoxazol-5-yl]-biphenyl-4-carboxylic acid ethyl ester, which was hydrolyzed to the acid as described in Example 17, Step 3.