Scheme 60.
Biomimetic synthesis of (−)-longithorone A. Reagents and conditions: (i) Me2AlCl, CH2Cl2, −20 °C, 70%, 1:1.4 diastereomers; (ii) TBAF, THF, 0 °C; (iii) PhI(O), MeCN/H2O, 0–25 °C, 90% two steps.
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