George Rosenkranz

From Wikipedia, the free encyclopedia
Jump to: navigation, search
George Rosenkranz
Miramontes rosenkranz 2001.jpg
George Rosenkranz (right) and Luis E. Miramontes, 2001 at the National Autonomous University of Mexico
Born (1916-08-20) August 20, 1916 (age 97)
Budapest, Hungary
Nationality Mexican
Fields Chemist
Known for Synthesis of norethisterone, the first orally highly active progestin, used in one of the first oral contraceptive pills

George Rosenkranz (born as György Rosenkranz, August 20, 1916, Budapest) is a pioneering Mexican scientist in the field of steroid chemistry, who used native Mexican plant sources as raw materials.[1][2][3] He was born in Hungary, studied in Switzerland and emigrated to Mexico to escape the Nazis.[1][4] At Syntex corporation, he headed the research groups that synthesized a progestin used in some of the first combined oral contraceptive pills and synthesized other useful steroids. Revolutionary advances in the intellectual understanding of steroid drugs and their production occurred under Dr Rosenkranz’s direction.[5] He was the Chairman of the Board of the Syntex from 1957 until his retirement in 1996.[3] In 2012, he was awarded the Biotechnology Heritage Award, in recognition of his significant contributions to the development of biotechnology through discovery, innovation, and public understanding.[6]

George Rosenkranz is also an ACBL Grand Life Master at his hobby of Contract bridge, with more than 13,000 masterpoints and 11 NABC titles.[7]

Scientific Research[edit]

External video
George Rosenkranz crop 2013 13-2744-1 1247.jpg
“Scientists You Must Know: Pioneering steroid researcher George Rosenkranzh”
“BIO 2013 Award Presentation to George Rosenkranz”, Chemical Heritage Foundation

Born in Budapest, Hungary, in 1916, Rosenkranz studied chemical engineering at the Swiss Federal Institute of Technology, where he received a Ph.D. degree.[3] His mentor, future Nobel Prize winner Lavoslav Ružička, began Rosenkranz's interest in steroid research. However, Nazi sympathizers were active in Zurich. Ružička shielded Rosenkranz and other Jewish colleagues, but the scientists soon realized that their stay was putting pressure on their mentor. "We got together and we decided to leave Switzerland to protect him," Rosenkranz said in a 2002 article for the Pan American Health Organization's magazine.[4]

He planned to go to Quito, Ecuador, and chair a university organic chemistry department. However, when while waiting in Havana, Cuba for his ship to Ecuador, the Japanese attacked Pearl Harbor. The United States immediately entered World War II, and the traveller was stuck. Rosenkranz decided to make the best of his situation. He accepted the Cuban president Fulgencio Batista's offer to let all refugees stay in the country and work. He found work at the Vieta Plasencia Lab, where he was asked to develop treatments for venereal disease.[2]

While there, he also continued his Zurich work on steroid research. The important role of hormones in human health was already acknowledged by the scientists, but an easy and cheap way to recreate them did not exist yet. Rosenkranz tried using vegetables. He attracted the interest of Syntex.[3] The company had been formed in 1944 by Russell Marker, Emerik Somolo, a Hungarian immigrant to Mexico, and Dr. Federico Lehmann, a German-trained scientist.[8] The Mexican company had discovered that cabeza de negro, a toxic yam from Mexican hills, produced a steroid that could be transformed into the hormone progesterone. However, after a year, the company's co-founders split, and professor Russell Marker left and took his steroid formulas with him. Rosenkranz was recruited to replace him, and moved to Mexico City in 1945.[4]

It was a huge challenge. Rosenkranz had to figure out how to recreate Marker's chemical production processes. He didn't have much help: Syntex employed nine lab assistants and only one other chemist. He started working backward, analyzing samples of Marker's work to tease out the ingredients. At the time, Mexico lacked a Ph.D. program in chemistry, so Rosenkranz recruited researchers from Mexico and around the world. When he couldn't find enough fully trained local chemists, he helped set up an Institute of Chemistry at the National Autonomous University of Mexico. He and his colleagues regularly worked at Syntex during the day and then spent the evenings teaching chemistry there. His team was soon reinforced with bright, young chemists, such as Carl Djerassi and Alejandro Zaffaroni. Rosenkranz also started the Institute for Molecular Biology in Palo Alto.

The hires paved the way for Syntex's next big discoveries. In the late 1940s, discovery of cortisone as an arthritis treatment was a hot topic, but no one had been able to create it cheaply and quickly. Rosenkranz's team started working in two shifts, and the long hours of work paid off—in 1951, Rosenkranz and his fellow researchers first submitted a paper on the synthesis of cortisone. Five months later, under the direction of Djerassi and Rosenkranz, Mexican chemistry student Luis E. Miramontes completed the last step of the synthesis of norethisterone (norethindrone).[4]

The company reached an agreement with American company Parke-Davis to market their "superhormone" as a pregnancy aid, Norlutin. Before the two firms were able to complete the deal, other parties had realized a wider use for norethindrone—as a pregnancy inhibitor. Parke-Davis, worried that groups opposed to birth control would boycott its other products, wouldn't market Syntex's product as a contraceptive. By 1962, Johnson & Johnson's Ortho division introduced Syntex's norethindrone product as a component of its birth control pill Ortho Novum. In 1964, Syntex came out with its own birth control product, Norinyl.[9]

Rosenkranz understood that peer recognition, not just commercial success, was a key to keep scientists happy and productive. Unlike other pharmaceutical companies, Syntex published most of its steroid research.[9] Between 1961 and 1962, scientists patented 1,378 new steroid compounds, 37% of those owned by Syntex. Rosenkranz gave up his executive positions at Syntex in 1982. Although technically retired for the past 25 years, Rosenkranz is still active in the industry. He is a member of the board of Digital Gene Technologies and president of the advisory board of ICT Mexicana.

Scientific Memberships[edit]

Scientific Awards[edit]


In addition to leadership in science, Rosenkranz is a world-class bridge player and one of the most successful in Mexico. He has won 12 North American Bridge Championships and has the rare distinction of having captured all four major team titles: the Grand Nationals, Reisinger, Spingold and Vanderbilt. He has represented Mexico and USA in dozens of world championship events since the early 1960s. In addition, he made significant contributions to bidding theory. He authored the Romex bidding system, an extension of Standard American with many gadgets. He also invented the Rosenkranz double and Rosenkranz redouble,[10] and wrote more than a dozen books on bridge.[4]

Edith Rosenkranz's kidnapping[edit]

In July 1984, Rosenkranz' wife Edith was kidnapped at the summer North American Bridge Championships in Washington, D.C. and ransomed for one million dollars. The FBI and the District of Columbia police captured the kidnappers and she was returned safely.[11]

Bridge Awards[edit]

  • ACBL Honorary Member 1990
  • Blackwood Award 2000
  • Precision Award 1976

Tournament record[edit]


  • North American Bridge Championships (12)
    • Master Mixed Teams (1) 1990
    • Open Swiss Teams (1) 1991
    • North American Swiss Teams (1) 1990
    • Grand National Open Teams (1) 1981
    • Men's Board-a-Match Teams (2) 1984, 1987
    • Reisinger Board-a-Match Teams (1) 1985
    • Spingold Knockout Teams (2) 1976, 1984
    • Vanderbilt Knockout Teams (3) 1975, 1976, 1982


  • North American Bridge Championships (15)
    • Blue Ribbon Pairs (1) 1974
    • Silver Ribbon Pairs (1) 1992
    • Master Mixed Teams (3) 1967, 1984, 1994
    • Open Swiss Teams (2) 1998, 2003
    • Men's Board-a-Match Teams (1) 1975
    • Open Board-a-Match Teams (2) 1990, 2000
    • Spingold Knockout Teams (1) 1967
    • Vanderbilt Knockout Teams (2) 1978, 2001
    • Reisinger Board-a-Match Teams (2) 1980, 1997
  • Other notable 2nd places:
    • USBC Bermuda Bowl qualifiers (1) 1982


  • Bid Your Way to the Top
  • Bridge – the Bidder's Game
  • Everything You Always Wanted to Know About Trump Leads and Were Not Afraid to Ask
  • More Tips for Tops
  • Our Man Godfrey
  • The Romex System of Bidding
  • Tips for Tops
  • Win with Romex

With Alan Truscott:

  • Modern Ideas in Bidding
  • Bidding on Target

With Phillip Alder:

  • Bid to Win, Play for Pleasure
  • Godfrey's Angels
  • Godfrey's Bridge Challenge
  • Godfrey's Stairway To The Stars


  1. ^ a b Ness, Roberta B. (2013). Genius unmasked. Oxford: Oxford Univ. Press. ISBN 9780199976591. 
  2. ^ a b "Scientists You Must Know: Pioneering steroid researcher George Rosenkranzh (Video)". Chemical Heritage Foundation. Retrieved 7 February 2014. 
  3. ^ a b c d e f "George Rosenkranz (Oral History)". Chemical Heritage Foundation. Retrieved 6 February 2014. 
  4. ^ a b c d e Cohen, Gerald S. (2002). "Mexico's Pill Pioneer". Perspectives in Health Magazine: The Magazine of the Pan American Health Organization 7 (1). Retrieved 6 February 2014. 
  5. ^ "Steroid pioneer gets Heritage Foundation, BIO award". BioSpectrum. 22 April 2013. Retrieved 7 February 2014. 
  6. ^ a b "George Rosenkranz to Receive 2013 Biotechnology Heritage Award". April 21, 2013. Chemical Heritage Foundation. Retrieved 10 December 2013. 
  7. ^ "George Rosenkranz ACBL Hall of Fame Biography". American Contract Bridge League (ACBL). Retrieved 6 February 2014. 
  8. ^ Mandy, Redig (2005). "Yams of Fortune: The (Uncontrolled) Birth of Oral Contraceptives". Journal of Young Investigators. Retrieved 7 February 2014. 
  9. ^ a b Mandaro, Laura (8 August 2005). "Scientist George Rosenkranz; Innovate: His determination helped millions ease their pain, plan their families". Investor's Business Daily. Retrieved 7 February 2014. 
  10. ^ Francis, Henry G., Editor-in-Chief; Truscott, Alan F., Executive Editor; Francis, Dorthy A., Editor, Sixth Edition (2001). The Official Encyclopedia of Bridge (6th ed.). Memphis, TN: American Contract Bridge League. p. 392-3. ISBN 0-943855-44-6. OCLC 49606900. 
  11. ^ Kay-Wolff, Judy (3 December 2011). "Time Marches On...". BRIDGEBLOGGING. Retrieved 6 February 2014. 

External links[edit]