The methionine analog, (Z)-L-2-amino-4-methylthio-3-butenoic acid (1) has been synthesized. The key intermediate, (Z)-(±)-methyl 2-acetamido-4-methylthio-3-butenoate (7) was converted to 1 by enantioselective ester hydrolysis using alcalase to give (Z)-L-2-acetamido-4-methylthio-3-butenoic acid (8), followed by enzymatic removal of the N-acetyl group using hog kidney acylase.
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氨酸类似物 (Z)-
L-2-amino-4-methylthio-3-butenoic acid (1)。关键的中间体(Z)-(±)-2-乙酰
氨基-4-甲
硫基-
3-丁烯酸甲酯(7)通过对映体选择性酯
水解(使用
乙醛酶)转化为 1,得到(Z)-
L-2-乙酰
氨基-4-甲
硫基-3-
丁烯酸(8),然后使用猪肾酰化酶酶解 N-乙酰基。