1H-Indolo(3, 2, 1-de)(1, 5)naphthyridin-6-ol, 2, 3, 3a, 4, 5, 6-hexahydro-6-ethyl-3-methyl-

1H-Indolo(3, 2, 1-de)(1, 5)naphthyridin-6-ol, 2, 3, 3a, 4, 5, 6-hexahydro-6-methyl-3-propyl-

1H-Indolo(3, 2, 1-de)(1, 5)naphthyridine, 2, 3, 3a, 4, 5, 6-hexahydro-3, 6-dimethyl-

1H-Indolo(3, 2, 1-de)(1, 5)naphthyridine, 2, 3, 3a, 4, 5, 6-hexahydro-3-ethyl-6-methyl-, methanesulfonate

1H-Indolo(3, 2, 1-de)(1, 5)naphthyridine, 2, 3, 3a, 4, 5, 6-hexahydro-3-methyl-

1H-Indolo(3, 2, 1-de)(1, 5)naphthyridine, 2, 3, 3a, 4-tetrahydro-3, 4-diethyl-, monohydrochloride

1H-Indolo(3, 2, 1-de)(1, 5)naphthyridine, 2, 3, 3a, 4-tetrahydro-3, 6-dimethyl-

1H-Indolo(3, 2, 1-de)(1, 5)naphthyridine, 2, 3, 3a, 4-tetrahydro-3-ethyl-6-methyl-

1H-Indolo(3, 2, 1-de)(1, 5)naphthyridine-4-carboxylic acid, 2, 3, 3a, , 4, 5, 6-hexahydro-6-oxo-3-(3-oxobutyl)-, methyl ester, cis-, monomethanesulfonate

1H-Indolo(3, 2, 1-de)(1, 5)naphthyridine-4-carboxylic acid, 2, 3, 3a, 4, 5, 6-hexahydro-10-chloro-6-oxo-, methyl ester

1H-Indolo(3, 2, 1-de)(1, 5)naphthyridine-4-carboxylic acid, 2, 3, 3a, 4, 5, 6-hexahydro-10-chloro-6-oxo-, methyl ester, cis-

1H-Indolo(3, 2, 1-de)(1, 5)naphthyridine-4-carboxylic acid, 2, 3, 3a, 4, 5, 6-hexahydro-10-chloro-6-oxo-, methyl ester, trans-

1H-Indolo(3, 2, 1-de)(1, 5)naphthyridine-4-carboxylic acid, 2, 3, 3a, 4, 5, 6-hexahydro-10-fluoro-3-methyl-6-oxo-, methyl ester, cis-

1H-Indolo(3, 2, 1-de)(1, 5)naphthyridine-4-carboxylic acid, 2, 3, 3a, 4, 5, 6-hexahydro-3-methyl-6-oxo-, ethyl ester, trans-, monomethanesulfonate

1H-Indolo(3, 2, 1-de)(1, 5)naphthyridine-4-carboxylic acid, 2, 3, 3a, 4, 5, 6-hexahydro-3-methyl-6-oxo-, methyl ester, cis-, monomethanesulfonate

1H-Indolo(3, 2, 1-de)(1, 5)naphthyridine-4-carboxylic acid, 2, 3, 3a, 4, 5, 6-hexahydro-3-methyl-6-oxo-, methyl ester, trans-, monomethanesulfonate

1H-Indolo(3, 2, 1-de)(1, 5)naphthyridine-6-carboxylic acid, 2, 3, 3a, 4-tetrahydro-3, 4, 4-triethyl-, methyl ester, monohydrochloride

1H-Indolo(3, 2, 1-de)(1, 5)naphthyridine-6-carboxylic acid, 2, 3, 3a, 4-tetrahydro-3, 4-diethyl-, methyl ester, monohydrochloride, with melting point of 219-220 degrees C

1H-Indolo(3, 2, 1-de)(1, 5)naphthyridine-6-carboxylic acid, 2, 3, 3a, 4-tetrahydro-3-ethyl-, methyl ester

1H-Indolo(3, 2, 1-de)(1, 5)naphthyridine-6-carboxylic acid, 2, 3, 3a, 4-tetrahydro-4, 4-diethyl-, methyl ester, monohydrochloride