Percy Lavon Julian

Jerome Williams

Born in Montgomery, Alabama, the son of a railway mail clerk and the grandson of enslaved people. In an era when African Americans faced prejudice in virtually all aspects of life, not least in the scientific world, he succeeded against the odds. Inadequately prepared by his high school, he was accepted at DePauw University in Greencastle, Indiana, as a sub-freshman, meaning that he had to take high-school courses concurrently with his freshman courses. Majoring in chemistry, he graduated as valedictorian of his class in 1920. After graduation he taught chemistry at Fisk University for two years before winning an Austin Fellowship to Harvard University, where he completed a master’s degree in organic chemistry. After Harvard he returned to teaching at West Virginia State College and Howard University.
In 1929 Julian traveled to the University of Vienna, Austria, to begin doctoral studies on the chemistry of medicinal plants. Two years later, with degree in hand, he and a Viennese colleague, Josef Pikl, took positions back in the United States at Howard and two years later moved to DePauw. There they accomplished the first total synthesis of physostigmine, the active principle of the Calabar bean, used since the end of the 19th century to treat glaucoma. Physostigmine, an alkaloid, eases the constriction of outflow channels from the eye’s aqueous humor to relieve high pressure there, which, if left untreated, damages the retina and eventually causes blindness.
Meanwhile researchers in many countries were seeking innovative and cost-effective ways to synthesize steroids, including cortisone and the sex hormones. German chemists discovered that the steroid stigmasterol, which Julian had obtained as a by-product of the physostigmine synthesis but was also obtainable from soybeans, could be used in the synthesis of certain sex hormones, including progesterone, a female sex hormone that was important in helping pregnant women avoid miscarriages. In pursuit of this lead, in 1936 Julian wrote to the Glidden Company in Chicago, requesting samples of their soybean oil. Through a series of events he wound up being hired by Glidden instead, as their director of research in the Soya Division, where he set about figuring out ways to make new products from soybeans.
In 1948 scientists at the Mayo Clinic announced their landmark discovery of cortisone, which had remarkable effects on rheumatoid arthritis, and Julian jumped into the exciting competition to synthesize cortisone inexpensively. Cortisone is a cortical hormone of the adrenal gland. In 1949 Julian developed a new synthesis for a related substance (called “Substance S”) also present in the adrenal cortex and differing from cortisone by only an oxygen atom. From this substance he was able to synthesize both cortisone and hydrocortisone. Hydrocortisone and its derivatives today are more widely prescribed than cortisone products, and most industrial syntheses still begin along the same route that Julian pioneered.
Julian located a wild sweet potato in Guatemala. He figured out how to synthesize cortisone from yams, for pennies a gram. Julian remained at Glidden until 1954, when he founded his own company, Julian Laboratories of Franklin Park, Illinois, and Mexico City (which he eventually sold to Smith, Kline and French) for Millions of dollars. Throughout his life he was socially active in groups seeking to advance conditions for African Americans, helping to found the Legal Defense and Educational Fund of Chicago and serving on the boards of several other organizations and universities

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