The development of norethisterone in 1951, a highly active progestin analogue effective when taken orally, established Carl Djerassi as a transformative figure in pharmaceutical chemistry. This synthetic breakthrough served as the foundation for one of the first successful combined oral contraceptive pills, fundamentally altering human reproductive health and social dynamics on a global scale.
Early Life and Migration
Born in Vienna in 1923 to parents Samuel Djerassi and Alice Friedmann, Carl Djerassi spent his early childhood in Bulgaria before returning to Austria. Following the Anschluss, he and his mother fled the Nazi regime in 1938, ultimately reaching the United States in 1939 as refugees. He adapted to American life, pursuing higher education through academic scholarships at institutions including Kenyon College and the University of Wisconsin–Madison, where he completed his PhD in 1945.
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Djerassi's career in industrial chemistry began at CIBA, where he contributed to the development of Pyribenzamine. In 1949, he joined Syntex in Mexico City as associate director of research. There, he spearheaded the synthesis of cortisone from diosgenin. His most significant achievement occurred in 1951, when he collaborated with Luis E. Miramontes and George Rosenkranz to create norethisterone, the primary component of the oral contraceptive pill.
Academic and Research Career
Transitioning to academia, Djerassi held a professorship at Wayne State University before joining the faculty at Stanford University in 1960. His research output spanned over 1,200 papers, largely focused on steroid hormones, alkaloids, and the structural elucidation of organic compounds. In collaboration with Joshua Lederberg and Edward Feigenbaum, he developed DENDRAL, an early expert system applying artificial intelligence to biomedical research.
Entrepreneurship and Later Pursuits
Beyond pharmaceuticals, Djerassi founded Zoecon in 1968 to develop environmentally conscious pest control using insect growth hormones. He also pursued interests as a writer and playwright, exploring the intersection of culture and science. An avid art collector, he amassed a significant collection of works by Paul Klee, which he arranged to donate to the Albertina in Vienna and the San Francisco Museum of Modern Art.
Fast facts
- Born: 1923, Vienna, Austria
- Died: 2015, San Francisco
- Notable Achievement: Co-inventor of norethisterone
- Academic Degrees: PhD in organic chemistry
- Key Employers: Syntex, Wayne State University, Stanford University
- Scientific Interests: Steroid chemistry, mass spectrometry, AI in medicine
- Awards: Wolf Prize in Chemistry (1978), Priestley Medal (1992)
- Citizenship: United States, Austria, Bulgaria
Questions readers ask
What was Djerassi's role in the development of the birth control pill?
He co-invented norethisterone, the first progestin analogue that was effective when taken orally, which became a core ingredient in early contraceptive pills.
Did Djerassi focus only on pharmaceuticals?
No, he also worked on pest control through his company Zoecon, engaged in artificial intelligence research, and was a prolific writer and art collector.
Achievements
- Commander's Cross of the Order of Merit of the Federal Republic of Germany — 2003
- Affiliated with Wayne State University, Stanford University and BASF Schweiz AG
- Educated at University of Wisconsin–Madison, Kenyon College and Tarkio College
- Worked as chemist, writer and university teacher
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