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- W2236957059 abstract "Stressed soybeans produce a group of phytoalexins that belong to the 6a-hydroxypterocarpan family of flavonoids. Certain of the more prominent members, such as the glyceollins I, II, and III, have demonstrated potential antidiabetic properties and promising cytotoxicity in both human breast and prostate cancer cell cultures with preliminary studies in animals further demonstrating antitumor effects in estrogen-dependent, human breast cancer cell implants. Although syntheses of glyceollin I have been reported previously, this work constitutes the first total directed synthesis of (±)-glyceollin II. It involves 12 steps with an overall yield of 7% using practical methods that should be readily scalable to produce quantities needed for advanced biological characterization. Highlights include a novel intramolecular benzoin condensation, a chelation-controlled lithium aluminum hydride-mediated reduction, and an intramolecular cyclization via the formation of a transient epoxide intermediate to cap the construction of the 6a-hydroxypterocarpan system. Additionally, a dihydro analogue has been obtained, and several isolated intermediates have been made available for evaluation of their biological properties and possible contributions toward elaborating key structure-activity relationship data among this family of promising phytoalexins elicited from stressed soybeans." @default.
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- W2236957059 date "2015-12-11" @default.
- W2236957059 modified "2023-09-23" @default.
- W2236957059 title "Total Synthesis of (±)-Glyceollin II and a Dihydro Derivative" @default.
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- W2236957059 doi "https://doi.org/10.1021/acs.jnatprod.5b00607" @default.
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