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The Dieckmann condensation of 3,4-bis(methoxycarbonylmethyl) levoglucosenone derivative afforded two regioisomeric 9,11-dioxatricyclo[6.2.1.0 2,6 ]undecane derivatives at a ratio of 5: 3. The products can be used in the synthesis of iridoids.
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Искакова et al. (2014) studied this question.
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