Total Synthesis of Hyperforin

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Total Synthesis of Hyperforin

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Title: Total Synthesis of Hyperforin
Author: Sparling, Brian Andrew
Citation: Sparling, Brian Andrew. 2013. Total Synthesis of Hyperforin. Doctoral dissertation, Harvard University.
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Abstract: Hyperforin is the component of the medicinal herb St. John's Wort (Hypericum perforatum) responsible for its antidepressant activity. It works by blocking the reuptake of a variety of neurotransmitters through a unique mechanism of action and may be a critical lead for the treatment of depression and possibly other human diseases. However, the therapeutic potential of hyperforin is severely handicapped by its poor water solubility, facile oxidative degradation, and potent activation of pregnane X receptor, leading to increased expression of many genes involved in xenobiotic metabolism. Access to a wide variety of hyperforin analogs is critical for mitigating these shortcomings while maintaining therapeutic activity. While limited semisynthetic manipulation of isolated hyperforin is feasible, total synthesis is the only possible means of obtaining diverse hyperforin analogs.
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