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磷代谢及维生素D的应用 酚羟基 R1 R2 -CH3 -CH3 α-生育酚 -CH3 -H β-生育酚 -H -CH3 γ-生育酚 -H -H δ-生育酚 结构特点 维生素E醋酸酯 Vitamin E Acetate R1 R2 R3 R4的不同分别代表K4-K7 萘环 侧链不同形成K1、K2系列 2-甲基-1,4-萘醌 K3、K4为化学合成品,其中 K3作为典型药物,其...