Heteroaromatic Analogs of Benzomorphan. Synthesis of Novel Thiazolo [4, 5-f] morphans

Abstract

Monothiazolization of ethyl 2-methyl-1, 3-dioxo-2-cyclohexaneacetate (I) afforded 2-aminothiazole derivative (IIa) corresponding to tetralone. In several steps, IIa was converted to some thiazolo [4, 5-f] morphans (X) via 9-oxothiazolo [4, 5-f] morphan (VIII).