| 摘要 |
There are described compounds of the general formula <IMAGE> in which X represents the 1,2,5,6- tetra-hydro-2-methyl-5,6-dioxo-as- triazin-3-yl group or its tautomeric form, viz. the 2,5-dihydro-6-hydroxy- 2-methyl-5-oxo-as-triazin-3-yl group, R represents a cleavable protecting group and the carboxy group can be present in protected form. These compounds, which themselves have pharmaceutically active properties, can be used to produce the pharmaceutically active compounds of the parent Application No. 7918655 (2022090A). |
