p. 1589 - 1597
(1999)7-(4-Methoxy-phenyl)-2-{N'-[1-(4-methoxy-phenyl)-meth-(E)-ylidene]-hydrazino}-6-{5-[1-(4-methoxy-phenyl)-meth-(E)-ylidene]-4-oxo-4,5-dihydro-thiazol-2-yl}-pyrano[2,3-d]thiazol-5-one
7-(4-Methoxy-phenyl)-2-{N'-[1-(4-methoxy-phenyl)-meth-(E)-ylidene]-hydrazino}-6-(4-oxo-4,5-dihydro-thiazol-2-yl)-pyrano[2,3-d]thiazol-5-one
3,7-bis-(4-methoxy-phenyl)-6-(4-oxo-4,5-dihydro-thiazol-2-yl)-4-oxa-8-thia-1,2,3a-triaza-cyclopenta[a]inden-5-one
3,7-bis-(4-methoxy-phenyl)-5-oxo-5H-4-oxa-8-thia-1,2,3a-triaza-cyclopenta[a]indene-6-carbothioic acid amide
2-(3,5-dimethyl-pyrazol-1-yl)-7-(4-methoxy-phenyl)-5-oxo-5H-pyrano[2,3-d]thiazole-6-carbothioic acid amide