α-Glucosidase Inhibitors with a 4, 5, 6, 7-Tetrachlorophthalimide Skeleton Pendanted with a Cycloalkyl or Dicarba-closo-dodecaborane Group
2001
Previous studies of α-glucosidase inhibitors derived from thalidomide revealed that 4, 5, 6, 7-tetrachloro-N-alkylphthalimide derivatives are superior lead compounds. Structure-activity relationship studies indicated that a hydrophobic group at the N(2) position is mandatory for potent activity. Accordingly, we have designed and synthesized some 4, 5, 6, 7-tetrachloro-N-cycloalkylphthalimide and 4, 5, 6, 7-tetrachloro-N-dicarba-closo-dodecaborane derivatives. The prepared compounds exhibited potent α-glucosidase-inhibitory activity. Among them, 4, 5, 6, 7-tetrachloro-N-cycloheptylphthalimide (9) showed the most potent activity, being approximately 30 times more active than the classical inhibitor, 1-deoxynojirimycin (1).
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