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Updated: Aug 30, 2026

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Simple and efficient production of (Z)-4-hydroxytamoxifen, a potent estrogen receptor modulator
1Division of Molecular Medicine, The Beckman Research Institute, The City of Hope National Medical Center, Duarte, California 91010, USA.
Abstract:
A McMurry coupling reaction and selective crystallization were used to develop a simple and efficient two-step synthesis of (Z)-4-hydroxytamoxifen (2a). This compound is an active metabolite of tamoxifen, a selective estrogen receptor (ER) modulator widely used to treat breast cancer. The synthesis employed 1,1-bis(4-hydroxyphenyl)-2-phenylbut-1-ene (1) as a useful building block.
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