(4-chloro-benzylidene)-(6-methyl-8H-[1,3]dioxolo[4,5-g]quinazolin-7-yl)-amine
7-benzyloxycarbonylamino-6-methyl-[1,3]dioxolo[4,5-g]quinazolinium betaine
(8-hydroxy-6-methyl-8H-[1,3]dioxolo[4,5-g]quinazolin-7-yl)-carbamic acid benzyl ester
7,16-dimethyl-4bH,13bH-bis[1,3]dioxolo[4,5-g;4',5'-g'][1,2,4,5]tetrazino[1,6-c;4,3-c']diquinazoline-5,14-dicarboxylic acid dibenzyl ester