| 摘要 |
Novel herbicidal compounds of the general formula <CHEM> wherein A represents an optionally substituted alkyl, alkenyl, cycloalkyl, cycloalkenyl, aryl, heteroaryl, aralkyl or heteroaralkyl group; R<1> represents a hydrogen atom or an acyl group; and R<2> represents an optionally substituted alkyl, alkenyl, aryl, heteroaryl, aralkyl or heteroaralkyl group. |
