| abstract |
General formula (Ⅰ)n n n n n n n n Wherein R 1 represents a lower alkyl group unsubstituted or substituted with halogen, a lower alkylsulfonyl group unsubstituted or substituted with halogen, a nitro group or a cyano group, and R 2 and R 3 are the same as or different from each other; An atom or a lower alkyl group, or combine with an adjacent carbon to represent a 3 to 6 ring, R 4 represents a hydrogen atom or a lower alkyl group or an acyl group which may be substituted, and R 5 represents a hydrogen atom or a lower alkyl group which may be substituted, Lower alkenyl group, lower alkoxy group, aryl group, aryloxy group or heterocyclic group, Y represents oxygen or sulfur atom, provided that R 2 and R 3 are each methyl group, R 4 is hydrogen atom, and R 3 is When 1 is a 3-chloropropyl group and Y is an oxygen atom, R < 1> is not a nitro group or a cyano group), The 1 , 4- benzoxazine derivative or its salt represented by these are disclosed. |