Steroids

Anemarrhenasaponin Ia is a steroidal saponin that can be isolated from the rhizomes of Anemarrhena asphodeloides Bunge. Anemarrhenasaponin Ia inhibits platelet aggregation. Anemarrhenasaponin Ia induces mild concentration-dependent hemolysis. Anemarrhenasaponin Ia inhibits fMLP- and AA-induced superoxide anion production, while enhancing PMA-induced superoxide anion production. Anemarrhenasaponin Ia can be used in studies related to thrombosis.

Ophiopojaponin C is a naturally occurring C₂₉ steroidal glycoside isolated from the tubers of O. japonicas.

3-(2-Hydroxyethyl) thio withaferin A is a Withaferin A derivative. Withaferin A, a steroidal lactone, inhibits NF-kB activation and targets vimentin, with potent antiinflammatory and anticancer activities. Withaferin A is an inhibitor of endothelial protein C receptor (EPCR) shedding.

4,27-Dimethyl withaferin A is a synthetic analog of withanolide natural products. 4,27-Dimethyl withaferin A has the potential for the research of neurodegenerative diseases (extracted from patent WO2015077780A1).

27-TBDMS-4-Dehydrowithaferin A, a withaferin A derivative, exhibits potent antiproliferative effects on the tumor cells.27-TBDMS-4-Dehydrowithaferin A induces tumor cells apoptosis. 27-TBDMS-4-Dehydrowithaferin A is a anticancer agent.

4-epi-Withaferin A (compound 28) is the analogue of Withaferin A. 4-epi-Withaferin A enhances cytotoxicity and cytoprotective heat-shock-inducing activity (HSA). 4-epi-Withaferin A has the potential for the research of protein aggregation-associated diseases by stimulating cellular defense mechanisms.

27-O-(tert-Butyldimethylsilyl)withaferin A (compound 9a), a natural withanolide, is an apoptosis inducer. 27-O-(tert-Butyldimethylsilyl)withaferin A shows antiproliferative activity against HeLa, A-549 and MCF-7 human cancer cell lines, and against normal Vero cells.