Dr. Percy Lavon Julian
(April 11, 1899 – April 19, 1975)
He was a research chemist and a pioneer in the chemical synthesis of medicinal drugs from plants.
Dr. Julian was the first to synthesize the natural product physostigmine.
Plus he was a pioneer in the industrial large-scale chemical synthesis of the human hormones progesterone and testosterone from plant 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.
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