Methyl (4E,7R)-7-hydroxyoctanoate was prepared in 71% yield from ethyl (R)-3-hydroxybutanoate and on reaction with a series of aldehydes in the presence of TMSOTf gave bicyclic oxygen heterocycles in good yields and with the creation of three new stereogenic centres in a single pot.
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Elsworth et al. (2008) studied this question.
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