Patent ID: 8759509

Claim:
A compound of general formula 1, where R 1 stands for H or CH 3 , O, NH, C 6 H 5 , CH 2 C 6 H 5 ; R 2 stands for H; R 3 , R 4 , R 5 , R 6 , R 7 are equal or different and stand for H or NH 2 , OH, OCH 3 , NO 2 , C(O)OCH 3 , C(O)OC 2 H 5 , a halogen; R 8 denotes CH 3 , OH or CH 2 OH, O, an alkene with the main chain containing 1-5 carbon atom(s), and with one double bond, CH(CH 3 )C 6 H 5 CH 3 CH 2 C 6 H 5 , CH 3 NR 9 , where R 9 stands for H or CH 3 , O, NH, C 6 H 5 , CH 2 C 6 H 5 .