The biomimetic epoxide-opening cascades from squalene polyepoxides 4-6 to triterpene polyethers (oxasqualenoids) teurilene (1), glabrescol (2), and omaezakianol (3), respectively, were reproduced in a single event by chemical reaction. These cascades proceeded through the 5-exo tandem cyclization triggered by Brønsted acid-catalyzed hydrolysis of the terminal epoxide, mimicking the direct hydrolysis mechanism of epoxide hydrolases.
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| http://dx.doi.org/10.1021/ol401081e | DOI Listing |
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