There is presented compounds of the formula ##STR1## wherein X represents the 1,2,5,6-tetrahydro-2-methyl-5,6-dioxo-as-triazin-3-yl group or its corresponding tautomeric form, the 2,5-dihydro-6-hydroxy-2-methyl-5-oxo-as-triazin-3-yl group, and the readily hydrolyzable esters, readily hydrolyzable ethers and salts of the compounds and hydrates of the compounds of formula I or of their esters, ethers and salts. Also provided is a method of their manufacture and intermediates therefor as well as corresponding pharmaceutical preparations.
给出了化合物的公式 ##STR1## 其中X代表1,2,5,6-四氢-2-甲基-5,6-二氧代-三嗪基团或其相应的互变异构体,2,5-二氢-6-羟基-2-甲基-5-氧代-三嗪基团,以及公式I或其酯,醚和盐的容易
水解酯,容易
水解醚和化合物的
水合物。还提供了其制造方法和中间体,以及相应的制药制剂。