Pregnene From Wikipedia, the free encyclopedia A pregnene is an alkene derivative of a pregnane.[1] An example is cortisone. Cortisone Ethisterone Spironolactone References [1]Pregnenes at the U.S. National Library of Medicine Medical Subject Headings (MeSH) See also Pregnanes This article about a pregnanes is a stub. You can help Wikipedia by adding missing information.vte Related Articles