Word: ruzicka
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Dates: during 1934-1934
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...pure form the active principles of the endocrine glands. When Chemist Edwin Calvin Kendall of the Mayo Clinic isolated thyroxin, the essence of the thyroid, about 15 years ago, a loud cry of applause arose. Since then other hormones have been refined and analyzed. Last week Professor Leopold Ruzicka of Zurich significantly reported in Nature that he had synthesized the male sex hormone. To get it, this altogether reputable scientist attacked hydroxy-ketone, a substance related to acetone, with dihydrocholesterol which is a derivative of cholesterol found in bile, brains and eggs. Nicely controlled chemical procedure produced a modified hydroxy...