1-benzyloxycarbonylamino-2,3-dimethoxy-5-(2-trimethylsilylethoxy)carbonylaminobenzene

1-benzyl-6,7-dimethoxy-3-etoxycarbonylmethyl-4-(2-trimethylsilylethoxy)carbonylaminoindole

6,7-dimethoxy-4-methylquinoline

7-Methoxy-2,4-dihydropyrrolo[4,3,2-de]quinolin-8(1H)-one

1,3,4,5-tetrahydro-7,8-dimethoxypyrrolo<4,3,2-de>quinoline