N. Kato et al., 9-DEOXY-15-HYDROXY-COTYLENOL AND 9-DEOXY-19-HYDROXYCOTYLENOL, Acta crystallographica. Section C, Crystal structure communications, 54, 1998, pp. 1165-1168
The title analogs (both C21H34O4) of cotylenol, a plant-growth regulat
or, both have a chair-sofa eight-membered ring, which has been recogni
zed as important for the biological activity of this class of compound
s.