... Targeting Carnitine Biosynthesis: Discovery of New Inhibitors against γ-Butyrobetaine Hydroxylase. ... (d) Amberlite IRA-410 (OH). (e) Aqueous HCl, dioxane, 40–70 °C, yield 70% (on 5d). Alicyclic methylamines 30a–c, necessary for the synthesis of aminobutanoates 5a–c ...