| abstract |
(57) [Abstract] [PROBLEMS] There is a demand for a cysteine protease inhibitor having excellent oral absorbability, tissue transferability, cell membrane permeability, and the like. An oxygen-containing heterocyclic derivative represented by the following general formula (I), a salt thereof, a solvate thereof, or a hydrate thereof. Embedded image (R 8: alkyl C 1 -C 20, an aryl group, etc.) R 2, R 4, R 6: such as an alkyl group of a hydrogen atom, C 1 ~C 5 R 3, R 5: a hydrogen atom, C 1 ~ C 20 alkyl group, etc. (R 9 : C 1 -C 10 alkyl group) A: C 1 -C 3 alkylene group n: 0 or 1 |