Abstract
The absolute configuration of 8-methyl-3-(-S-α-phenylethyl)-2,3,3a-S,4,5,6-hexahydro-1H-pyrazino-[3,2,1-jk]carbazole has been established on the basis of the stereospecificity of its 1H and 13C NMR parameters, which, taking into account the synthetic scheme, provides evidence for an S-configuration of the aymmetric C-3a atom in the original ( + )-pyrazidole.
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