Percy Lavon Julian (April 11, 1899 – April 19, 1975) was a U.S. research chemist and a pioneer in the chemical synthesis of medicinal drugs from plants. He was the first to synthesize the natural product physostigmine, and a pioneer in the industrial large-scale chemical synthesis of the human hormones progesterone and testosterone fromplant sterols such as stigmasterol and sitosterol. His work laid the foundation for the steroid drug industry's production of cortisone, other corticosteroids, and birth control pills.
He later started his own company to synthesize steroid intermediates from the Mexican wild yam. His work helped greatly reduce the cost of steroid intermediates to large multinational pharmaceutical companies, helping to significantly expand the use of several important drugs.
Julian received more than 130 chemical patents. He was one of the first African-Americans to receive a doctorate inchemistry. He was the first African-American chemist inducted into the National Academy of Sciences, and the second African-American scientist inducted (behind David Blackwell) from any field.
A special thank you to Google for saluting Percy Julian today.