Asymmetric Synthesis of the Diene Unit of Methyl Sartortuoate via a Temperature-Sensitive Intramolecular Horner-Wadsworth-Emmons (HWE) Reaction - Yao, Hequan; Gao, Yuan; Liu, Peng; Sun, Bingfeng; Xu, Xingxiang (Synlett, 2007)