Polypropionate Synthesis 0.3mo% 500° quinidine THF.-78°C Me - OLi Meo Me N MeMe THF,-78° Me Me THF,-78°C oO OH Meo OHC N MeMe MeMe Me Me MeMeMeMe 55% yield siphonarienal Guo, X ; Liao, W; Calter, M. A. Org. Lett. 2001, 3, 1499Polypropionate Synthesis Guo, X.; Liao, W.; Calter, M. A. Org. Lett. 2001, 3, 1499. O Me O Me N MeO Li O Me H Me N O MeO Me OLi Me O H Me Me O O Me Me Me Me Me Me N O MeO Me O OH Me OHC Me Me Me Me 55% yield siphonarienal THF, -78 °C THF, -78 °C THF, -78 °C 0.3 mol% quinidine 2 500 °C