4-(3-Amino-8-chloro-5,6-dihydro-benzo[5,6]cyclohepta[1,2-b]pyridin-11-ylidene)-piperidine-1-carboxylic acid ethyl ester

8-Chloro-3-nitro-11-piperidin-4-ylidene-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridine

4-(3-bromo-8-chloro-5,6-dihydro-11H-benzo[5,6]cyclohepta(1,2-b)pyridin-11-ylidene)-piperidine

3,8-Dichloro-11-piperidin-4-ylidene-6,11-dihydro-5H-benzo[5,6]cyclohepta[1,2-b]pyridine

4-(3,8-Dichloro-5,6-dihydro-benzo[5,6]cyclohepta[1,2-b]pyridin-11-ylidene)-piperidine-1-carboxylic acid ethyl ester