Task: Translation
Input (Czech): Deriv ty pyridinu obecn ho vzorce A, B, C a D, kde R.sub.1.n. je H; CH.sub.2.n.R.sub.y.n., kde R.sub.y.n. je alkyl s 1 a  10 C nebo cykloalkyl s 3 a  10 C, alkenyl s 2 a  10 C, nebo hydroxyalkyl s 1 a  6 C, alkoxyalkyl s 1 a  4 atomy C v alkoxylu a 1 a  6 atomy C v alkylu nebo fenylethyl; nebo -CH=CR.sub.z.n.R.sub.z.n., kde R.sub.z.n. je alkyl s 1 a  6 C nebo cykloalkyl se 3 a  6 atomy C; R.sub.2.n. je H, alkyl s 1 a  8 C, hydroxyalkyl s 1 a  6 C, alkoxyalkyl s 1 a  4 C v alkoxylu a 1 a  6 C v alkylu, benzyl,  (fenyl)ethyl nebo fenyl, p°i em  benzylov², (fenyl)ethylov² nebo fenylov² substituent je pop° pad  substituov n v benzenov m kruhu zbytkem zvolen²m ze souboru zahrnuj c ho methyl, methoxy a halogen; nebo morfolinoalkyl s 1 a  4 C v alkylu; R.sub.6.n. a R.sub.7.n. nez visle je v dy H nebo alkyl s 1 a  5 atomy C, p°i em : R.sub.6.n. a R.sub.7.n. dohromady neobsahuj  v ce ne  6 C; a kdy  R.sub.7.n. je H, R.sub.6.n. nen  H; R' je alkyl s 1 a  4 C, perfluoralkyl s 1 a  4 C, alkylfenyl s 1 a  4 C v alkylu nebo halogenfenyl; X je nitro nebo amino; a Bn je hydrogenolyzovateln² substituent aminoskupiny zvolen² z fenylmethylu, (4-methylfenyl)methylu a furylmethylu.\
Output (English): In the present invention there are disclosed pyridine derivatives of the general formulae A, B, C and D, in which Ri1 represents hydrogen; CHi2Riy wherein Riy denotes alkyl containing 1 to 10 carbon atoms or cycloalkyl having 3 to 10 carbon atoms, alkenyl containing 2 to 10 carbon atoms, or hydroxyalkyl containing 1 to 6 carbon atoms, alkoxyalkyl having 1 to 4 carbon atoms v in the  alkoxyl moiety and 1 to 6 carbon atoms in the alkyl moiety or phenylethyl; or -CH=CrizRiz wherein Riz represents alkyl containing 1 to 6 C carbon atoms or  cycloalkyl having 3 to 6 carbon atoms; Ri2 represents hydrogen, alkyl containing 1 to 8 carbon atoms, hydroxyalkyl having 1 to 6 carbon atoms, alkoxyalkyl containing 1 to 4 carbon atoms in the alkoxyl moiety and 1 to 6 carbon atoms in the alkyl moiety, benzyl, (phenyl)ethyl or phenyl, whereby the benzyl, (phenyl)ethyl or phenyl substituent can be optionally substituted in the benzene ring with a radical being selected from the group comprising methyl, methoxy and  halogen; or morpholinoalkyl containing 1 to 4 carbon atoms in the alkyl moiety; Ri6 and Ri7 represents independently on each other hydrogen or alkyl containing  1 to 5 carbon atoms wherein: Ri6 and Ri7 together do not contain more than 6 carbon atoms; and when Ri7 denotes hydrogen, Ri6 is not hydrogen; R' represents alkyl containing 1 to 4 carbon atoms, perfluoroalkyl containing 1 to 4 carbon atoms, alkylphenyl having 1 to 4 carbon atoms in the alkyl moiety or halophenyl; X denotes nitro or amino; and Bn represents a hydrolysable substituent of an amino group being selected from the group comprising phenylmethyl, (4-methylphenyl)methyl and furylmethyl.