Abstract
A convergent route to multigram quantities of a mineralocorticoid antagonist 3 is described. Starting from (R)-phenylglycinol, the synthesis of cis 2,5-morpholine 2 is accomplished utilizing a de-epimerization to install the second stereogenic center. The multigram synthesis of 3 was completed through a sequence of an SNAr reaction, Dakin oxidation, alkylation, and cyclization to provide a crystalline solid.
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