C([NH:5][S:6]([C:9]1[CH:14]=[CH:13][C:12]([B:15]([OH:17])[OH:16])=[CH:11][CH:10]=1)(=[O:8])=[O:7])(C)(C)C>C(O)(C(F)(F)F)=O.CCOCC>[NH2:5][S:6]([C:9]1[CH:10]=[CH:11][C:12]([B:15]([OH:17])[OH:16])=[CH:13][CH:14]=1)(=[O:8])=[O:7]A solution of 4-t-butylaminosulfonylbenzene boronic acid (500 mg) in TFA (5 mL) was stirred at r.t. for 15 h. The mixture was diluted with ether and the solid material was filtered to provide the title compound.
Wird geladen…