Scheme 9. Synthesis of CJ-16,264 Analogue (−)-13a.
aReagents and conditions: (a) DMP (3.0 equiv), CH2Cl2, 0 → 25 °C, 45 min, 61% (ca. 1:1 dr); (b) TASF (10 equiv), THF, 0 °C, 5 min, 33%.
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