The present invention relates to furazanopyrazine derivatives of the
general formula (I): 1
wherein:
R' represents --NR.sup.1R.sup.2 or --OR.sup.9
R" represents --NR.sup.5--NR.sup.3R.sup.4, --NR.sup.5--OR.sup.b,
--O--NR.sup.3R.sup.4;
wherein R.sup.1 to R.sup.9 in formula (I) represent independently of each
other a variety of different substituents comprising alkyl, aryl,
aralkyl, alkylaryl, heteroaryl groups and monofunctional moieties.