Patent ID: 8012993

Claim:
A compound of formula (I) wherein R 1 and R 3 are each independently selected from the group consisting of hydrogen, alkyl, alkenyl, cycloalkyl and alkynyl; R 2 , R 4 , R 5 , R 6 , R 7 and R 8 are each independently selected from the group consisting of hydrogen, alkyl, alkenyl, cycloalkyl and alkynyl; R 9 is selected from the group consisting of hydrogen, alkyl, alkenyl, cycloalkyl, alkynyl, aryl and aralkyl; R 10 is selected from the group consisting of hydrogen, alkyl, cycloalkyl, alkenyl, alkynyl, heterocyclyl, —C(═O)R 11 and —S(═O) 2 R 11 , wherein R 11 is selected from the group consisting of hydrogen, alkyl, alkenyl, cycloalkyl, alkynyl, aryl, aralkyl and heterocyclyl; Z is NO; Y is an alkoxycarbonyl of formula —C(═O)OR 12 , wherein R 12 is selected from the group consisting of alkyl, alkenyl, cycloalkyl, alkynyl, aryl, aralkyl, and heterocyclyl; and X is —NR 13 ; wherein R 13 is selected from the group consisting of hydrogen, alkyl, alkenyl, cycloalkyl, alkynyl, aryl, aralkyl and heterocyclyl; or its salts thereof.