A common synthetic route to alpha-tocotrienol and alpha-tocopherol has been accomplished by a biomimeticcyclization that yields the chromanol ring. The chirality at C2 of the chromanol was induced by a covalently attached chiral dipeptide. Its terminal Asp participates in the enantioface-selective protonation of the double bond of the alpha-tocotrienol precursor I. alpha-Tocotrienol was diastereoselectively
α-生育三烯酚和α-生育酚的常见合成路线是通过产生色原醇环的仿生环化完成的。色原醇 C2 处的手性是由共价连接的手性二肽诱导的。它的末端 Asp 参与了 α-生育三烯酚前体 I 的双键的对映选择性质子化。 α-生育三烯酚被非对映选择性氢化成 α-生育酚。