Tamoxifen – Wikipedia, the free encyclopedia
https://en.wikipedia.org/wiki/Tamoxifen
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In the late 1950s, pharmaceutical companies were actively researching a newly discovered class of anti-estrogen compounds in the hope of developing a morning-after contraceptive pill. Arthur L Walpole was a reproductive endocrinologist who led such a team at the Alderley Park research laboratories of ICI Pharmaceuticals. It was there in 1966 that Dora Richardson first synthesised tamoxifen, known then as ICI-46,474.[59] Walpole and his colleagues filed a UK patent covering this compound in 1962, but patent protection on this compound was repeatedly denied in the US until the 1980s.[60]
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