| abstract |
(57) [Summary] (Modified) [Purpose] Novel oxetanones, methods for their preparation, pharmaceutical preparations containing such oxetanones, and the preparation of these oxetanones in the preparation of pharmaceutical preparations. Provide use. [Structure] The following formula I Wherein, Q is the following formula (R 3, R 4) NCO (X) n -CO- Q 1 (R 3, R 4) NCO-X'- Q 2 or , R 1 and R 2 represent an alkyl group substituted with a halogen atom, etc.], and novel pancreatic lipase-inhibiting oxetanones are prepared starting from the corresponding β-hydroxycarboxylic acid. |