Author's Organization：Institute of Physical and Chemical Research Institute of Physical and Chemical Research:(Present address)The Japan Defence Academy
Gas chromatography of the stereoisomers of ring system was investigated, using SE-30 and QF-1 phases. In all of the cases, di-, tri- and tetra-cyclic (steroids and alkaloids) compounds, the cis isomers which are more compact than trans isomers were eluted faster.
