Enantioselective Construction of β-Substituted γ-Lactone through Catalytic Asymmetric Oshima–Utimoto Reaction: Divergent Total Syntheses of (−)-Podophyllotoxin and Its Eleven Congeners - Zhi-Juan He; Ma-Haoran Hong; Ling-Hui Zhang; Wen-Hui Xiong; Fu-Min Zhang (Journal of the American Chemical Society, 2025)