INTERMEDIATE CHEMICAL COMPOUND Russian patent published in 2008 - IPC C07D498/08 

FIELD: chemistry.

SUBSTANCE: invention pertains to new layers of acidic compounds with Formula I , where R² is C_1-6alkyl (possibly substituted and/or ending with one or more substitute, chosen from -OH, halogen, cyano, nitro and aryl) or aryl, where each aryl group, if not specifically mentioned, is possibly substituted by one or more substitutes, including -OH, cyano, halogen, nitro, C_1-6alkyl, C_1-6alkoxy, -N(R^14a)R^14b, -C(O)R^14c, -C(O)OR^14d, -C(O)N(R^14e)R^14f, -N(R^14g)C(O)R^14h, -N(R^14m)S(O)₂R^13b, -S(O)₂R^l3c and/or -OS(O)₂R^13d, where radicals from R^13b to R^l3d independently represent C_1-6alkyl; R^14a and R^14b independently represent H, C_1-6alkyl, or jointly represent C_3-6alkene, as a result, yielding a four-heptatomic nitrogen containing ring; radicals from R^14c to R^14m independently represent H or C_1-6alkyl; A represents , where R¹⁶ represents unsubstituted C_1-4alkyl, C_1-4perfluoroalyl or phenyl, where the last group can be substituted with one or more substitutes, chosen from C_1-6alkyl, halogen, nitro and C_1-6alkoxy. The invention also relates to the method of obtaining Formula II compounds.

EFFECT: obtaining of new intermediate compounds and their use in special obtaining of formula II oxabispidin compounds, which can be used in the treatment of cardiac arrhythmia.

8 cl, 1 ex