Stéroïdes

β-Sitosterol β-D-glucoside is a phytosterol glycoside, which is primarily derived from plant sources such as fruits, vegetables, nuts, and seeds. As a natural component of plant cell membranes, it exhibits bioactive properties. The compound functions by modulating cholesterol metabolism and has anti-inflammatory, immunomodulatory, and antioxidant effects. It achieves this by interfering with the absorption of cholesterol in the intestines and modulating the activity of enzymes involved in its metabolism.

Pregnanediol 3α-O-β-D-glucuronide is a steroid conjugate, which is primarily a urinary metabolite derived from the catabolism of progesterone. It represents an important biomarker in endocrinological studies with direct relevance to reproductive biology. The compound originates in the body during the breakdown of progesterone, where it is conjugated with glucuronic acid to increase its solubility for renal excretion. This transformation allows for convenient and non-invasive monitoring of progesterone levels in clinical and research settings.

Withaferin A is a bioactive compound, which is a steroidal lactone with antiproliferative properties. It is derived from the medicinal plant *Withania somnifera*, commonly known as Ashwagandha. Withaferin A exerts its effects by modulating various signaling pathways, including the inhibition of NF-kB and induction of oxidative stress, which lead to apoptotic cell death in cancer cells and reduced inflammation.

**Azedarachol** is a botanical compound, which is a natural product derived from the neem tree (Azadirachta indica). This compound is known for its role as a bioactive agent, working through mechanisms that involve disrupting insect endocrine systems and acting as an antifeedant. Azedarachol's mode of action is primarily through its interference with hormonal balance within target organisms, which can lead to decreased feeding, stunted growth, and interrupted reproduction, making it an area of interest for pest control research.

Phytosterol with anti-osteoarthritic activity; inhibits cholesterol biosynthesis

Formononetin-7-O-gentiobioside is an isoflavonoid glycoside, which is a type of naturally occurring compound often found in plants, specifically in the Fabaceae family. This compound is primarily sourced from various legumes and has been studied for its potential bioactive properties due to its unique chemical structure. The mode of action of formononetin-7-O-gentiobioside involves its interaction with biological pathways, where it may exhibit antioxidant, anti-inflammatory, or estrogen-like activities, similar to other isoflavonoids. These interactions are significant in modulating cellular pathways that can contribute to various physiological effects.

DHED is a neuroactive steroid precursor, specifically a bioprecursor prodrug of estradiol, which is derived from chemical synthesis pathways. It is unique in its targeted mode of action, as it selectively converts to the active hormone estradiol within the brain via enzymatic processes that occur in situ. This specificity is facilitated by 17β-hydroxysteroid dehydrogenase type 1, which catalyzes the conversion of DHED to estradiol exclusively in the brain, minimizing peripheral estrogenic effects.

Phytoestrogen with anti-cancer properties

Saponins are naturally occurring glycosides, which are compounds sourced primarily from various plant species, including legumes, herbs, and certain vegetables. These compounds are characterized by their unique structure, comprising a hydrophobic aglycone linked to hydrophilic sugar moieties. This dual nature endows saponins with surfactant-like properties, allowing them to interact with both hydrophilic and hydrophobic molecules.

1-Dehydroepiandrosterone is a steroid hormone and a metabolic intermediate in the biosynthesis of androgen and estrogen sex steroids, which is derived from cholesterol in the adrenal glands, gonads, and brain. Acting primarily as a prohormone, it facilitates the synthesis of active steroid hormones by serving as a precursor molecule that undergoes enzymatic conversion into potent androgens like testosterone and dihydrotestosterone, as well as estrogens such as estradiol within peripheral tissues.