“…Riligustilide, one of dimeric phthalides isolated from LC, displays a weak progesterone-like activity, whereas another dimeric phthalide compound, (3Z')-(3Z'R,6'R,3R,6R,7R)-3,8-dihydro-6.6' ,7.3a'-diligustilide, is a potent and specific activator of progesterone receptor. The in vivo progestogenic activity of LC extract in male Sprague-Dawley rats probably has utility for progesterone-replacement therapy (Lim et al, 2006a). These bioactive phthalides and their parent extracts may have utility for the treatment of conditions requiring progesterone action (Lim et al, 2006b).…”