Patent ID: 6281355
Filing Date: 2001-08-28
Classification: C07D

Abstract:
A nitrogen-containing tetracyclic compound represented by the formula: ##STR12##wherein Y.sup.1 --Y.sup.2 --Y.sup.3 is N--C.dbd.N or a group represented by the formula: C.dbd.C--NR.sup.3 (wherein R.sup.3 is a hydrogen atom, a C.sub.1-5 alkyl group or a nitrogen-containing C.sub.2-10 alkyl group), Y.sup.4 is S, SO, SO.sub.2, CH.sub.2 or a group represented by the formula: NR.sup.4 (wherein R.sup.4 is a C.sub.1-5 alkanoyl group or a C.sub.1-5 alkyl group), R.sup.1 and R.sup.2 are the same or different, and are each a hydrogen atom, a C.sub.1-10 alkyl group, a C.sub.3-15 alkoxyalkyl group or a C.sub.3-15 alkylaminoalkyl group, or R.sup.1 and R.sup.2 taken together with the nitrogen atom to which they are attached form a cyclic amino group, X.sup.1 and X.sup.2 are the same or different, and are each a hydrogen atom, a C.sub.1-5 alkyl group, a C.sub.1-5 alkoxy group or a halogen atom, and n is 0, 1 or 2; or a pharmaceutically acceptable salt thereof.