<unk> s, also known as phytoprogestins, are phytochemicals (that is, naturally occurring, plant-derived chemicals) with progestogenic effects. Relative to their phytoestrogen counterparts,<unk> s are rare. However, a number have been identified, including kaempferol, diosgenin (found in yam), apigenin (found in chasteberry), naringenin, and syringic acid, among others. In addition, 3,8-dihydrodiligustilide from Ligusticum chuanxiong is a potent progestogen (EC50 = 90 nM), whereas riligustilide is a weak progestogen (EC50 ≈ 81 μM).
Phytoprogestogen
Antiprogestogen
Phytoestrogen
Estrogen conjugate
Conjugated estrogens
Nonsteroidal estrogen
Xenoestrogen
Progestogen ester