Grandiflorenic acid can reproduce the uterine responses induced by aqueous extract of zoapatle leaves. It is suggested that grandiflorenic acid may have an antifertility effect.
Rohitukine is an anti-cancer agent. It modulates apoptosis pathways through gastrin antagonism and H(+) K (+)-ATPase inhibition. Rohitukine ia an antiadipogenic, antidyslipidemic, gastroprotective, antifertility, and antileishmanial compound.
15(S)-15-methyl Prostaglandin D2 (15(S)-15-methyl PGD2) is a metabolically stable synthetic analog of PGD2 . In contrast to PGD2, 15(S)-15-methyl PGD2 induces vasoconstriction and increases systemic blood pressure with much reduced inhibitory activity on ADP-induced platelet aggregation. It also exhibits strong antifertility activity in hamsters (200-fold more potent than PGD2).
Prostaglandin F2β (PGF2β) is the 9β-hydroxy stereoisomer of PGF2α. It is much less active than PGF2α in antifertility and bronchoconstrictor activities. PGF2β exhibits bronchodilating activity in guinea pigs and cats and antagonizes the bronchoconstrictor activity of PGF2α.
17-phenyl trinor PGE2 ethyl amide is derived from 17-phenyl trinor PGE2, a synthetic analog of PGE2 that acts as an agonist of EP1 and EP3 receptors in mice (Ki = 14 and 3.7 nM, respectively) and EP1, EP3, and EP4 in rats (Ki = 25, 4.3, and 54 nM, respectively). 17-phenyl trinor PGE2 causes contraction of guinea pig ileum at a concentration of 11 μM and is 4.4 times more potent than PGE2 as an antifertility agent in hamsters. Modification of the C-1 carboxyl group to an ethyl amide serves to increase lipid solubility, thereby improving uptake into tissues and further lowering the effective concentration. Ethyl amide groups are then removed by amidases, regenerating the active free acid.
Azacosterol is a diaza derivative of cholesterol which acts as a hypocholesteremic agent by blocking delta-24-reductase causing accumulation of desmosterol. Azacosterol acts as an inhibitor of 24-dehydrocholesterol reductase (24-DHCR), preventing the formation of cholesterol from desmosterol. Although it primarily acts to inhibit 24-DHCR, the drug also inhibits other steps in cholesterol biosynthesis. The antifertility effects of the drug in birds are mediated by inhibition of steroid hormone production, steroid hormones being synthesized from cholesterol.
Prostaglandin F2α (PGF2α) 1,9-lactone, a lipid-soluble internal ester of PGF2α, demonstrates resistance to hydrolysis by human plasma esterases, maintaining its structure even after 20 hours of incubation under physiological conditions. Unlike PGF2α, this compound exhibits minimal antifertility and vasoactivity.
17-Phenyl trinor Prostaglandin E2 (17-phenyl trinor PGE2) is a synthetic analog of PGE2, functioning as an agonist at the EP1 and EP3 receptors. It induces contraction of the guinea pig ileum at a 11 µM concentration and displays slightly less potency than PGE2 in stimulating the gerbil colon and rat uterus. Notably, with an ED50 value of 350 µg kg, 17-phenyl trinor PGE2 exhibits 4.4 times greater antifertility efficacy in hamsters compared to PGE2.
Anwuweizonic acid may have inhibitory effects on 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced inflammation in mice. Mixture of coccinic acid and anwuweizonic acid has antifertility activity, shows significant inhibitory activity against human decidu
Coccinic acid shows inhibitory effects against colorectal carcinoma HCT-15 and oral epithelial cell line KB-3-1.Mixture of coccinic acid and anwuweizonic acid shows significant inhibitory activity against human decidual cells and rat luteal cells in vitro