| 摘要 |
FIELD: organic chemistry. SUBSTANCE: compound of the formulawhere R means hydrogen, hydroxy, C-C-alkoxy, group of the formula -O-(CO)-Rwhere means hydrogen, R-alkyl optinal substituted with amino, carbonyl, C-C-alkoxycarbonyl, C-C-alkanoylhydroxy, carbamoyl and/or aryl; or Rmeans C-C-alkenyl optional substituted with aryl; or Rmeans C-C-cycloalkyl; or Rmeans aryl optional substituted with hydroxy, C-C-alkyl, C-C-alkoxy, and/or halide; or Rmeans O-aryl where aryl is optional substituted with hydroxy, C-C-alkyl, C-C-alkoxy, and/or halide; or R means group of the formula -O-SO-Rwhere Rcan be C-C-alkyl or aryl optional substituted with C-C-alkyl; or R means carbamoylhydroxy where nitrogen can be substituted with one or two C-C-alkyls; or R means group of the formula (O-C)O(R-O-)C-C-alkyl) where Rmeans bond or C-C-alkanediyl; Rmeans halide, C-C-alkyl, C-C-alkyl substituted with C-C-alkyl, free or substituted C-C-cycloalkyl, or free or substituted C-C-cycloalkenyl; Rmeans O or CH; Rmeans CHor ; Rmeansor bond; and Rmeans amino, nitrilo optional substituted with one or two C-C-alkyls, or N-heterocyclic ring optional involving other heteroatoms taken from N, O or S in the indicated ring, or its pharmaceutically salt or its solvate. EFFECT: improved method of synthesis. |
