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Ralph F. Hirschmann Award In Peptide Chemistry

by Linda Wang
March 10, 2014 | A version of this story appeared in Volume 92, Issue 10

Credit: Courtesy of Samuel Danishefsky
Photo of Samuel J. Danishefsky, professor of chemistry at Columbia University and Kettering Chair and Director of the Laboratory for Bioorganic Chemistry at the Sloan-Kettering Institute for Cancer Research
Credit: Courtesy of Samuel Danishefsky

Sponsored by Merck Research Laboratories

“Mechanism leads to method, and method leads to strategy. That’s the holy grail,” says Samuel J. Danishefsky, a professor of chemistry at Columbia University and Kettering Chair and director of the Laboratory for Bioorganic Chemistry at Sloan-Kettering Institute for Cancer Research.

It’s this guiding principle that has led Danishefsky to make such important discoveries as the synthesis of anticancer vaccines and the total synthesis of many small natural products, which he refers to as SNPs. His latest achievement is the synthesis of homogeneous versions of erythropoietin (Science 2013, DOI: 10.1126/science.1245095).

“Sam has made an enormous impact on the glycopeptide field, from the synthesis of both carbohydrates and peptides to their covalent connection,” says Julius Rebek Jr., a professor of chemistry and director of the Skaggs Institute for Chemical Biology at Scripps Research Institute, La Jolla, Calif.

“His approach is characterized by high architectural originality and a willingness to assume risks,” says colleague Madeleine M. Joullié, a professor of chemistry at the University of Pennsylvania, who has followed Danishefsky’s research over the years. “His program, from chemical design, through a complex series of steps, culminating in promising clinical trials, is a most remarkable accomplishment.”

Danishefsky’s discoveries are diverse because he isn’t content to focus on just one area of research. “I shift to what I think are the most important and timely problems that I can think of,” he says. “But the basics are still the same: mechanisms, methods, strategy.”

Yet he’s highly selective in what he chooses to focus on. “It’s better to work on an A problem with a B solution than to work on a B problem with an A solution,” he says, noting that he always tries to pick out challenging problems to solve.

Danishefsky is the youngest of four children, including two brothers and a sister. One of his older brothers, a biochemist, was the first in the family to go into the sciences, and this helped spark Danishefsky’s own interest in the field.

Danishefsky entered college as a premed student before deciding to focus on chemistry. He earned a B.S. in chemistry from Yeshiva University in 1956 and went on to receive a Ph.D. in organic chemistry under the guidance of Peter Yates at Harvard University in 1962. He completed a postdoc in the lab of Gilbert Stork at Columbia in 1963.

The following year, Danishefsky began his academic career as an assistant professor at the University of Pittsburgh and by 1971 had earned the title of professor. He joined the faculty at Yale University in 1979 and moved to Sloan-Kettering Institute for Cancer Research in 1991. In 1993, Danishefsky took up a joint appointment at Columbia, where he is now Centennial Professor of Chemistry. He is cofounder of the Laboratory for Bio­organic Chemistry.

In addition to his love of chemistry, Danishefsky found another kind of love in the lab as well. He met his wife, Sarah, while he was a postdoc in Stork’s lab at Columbia and she was a graduate student. Today, Sarah runs his lab, and they have two children, a son and a daughter.

Danishefsky will present the award address before the Division of Organic Chemistry


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