Abstract
It is shown that benz[f]isoquinolines can be readily obtained by Bischler–Napieralski cyclisation of N-acyl derivatives of 2-(1-naphthyl)ethylamines. Tricyclic imines obtained by this route, on reaction with mercapto-acetic acid led to (±)13-aza-15-thia-18-norequilenin and its deoxy analogue. Structure of these heterosteroids was established by n.m.r. spectroscopy.
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