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合霉素(消旋-I_a)可利用由D(-)-扁桃酸制成的α-乙酰氧基苯乙酰氯作为拆开剂拆开.L(+)-I_a的D(-)-α一乙酰氧基苯乙酸酯在乙醇中首先析出.合霉素前体(消旋-II)于应用(+)-酒石酸单甲酯为拆开剂时,获得L(+)-II的酒石酸单甲酯盐,从母液中分得不纯的D(-)-II.
Synthomycin (racemate-I_a) can be disassembled using α-acetoxyphenylacetyl chloride made from D (-) - mandelic acid as a disintegrant. The D (-) - α Monacetoxyphenylacetate first precipitated in ethanol.Chemomycin precursor (rac-II) Upon the use of (+) - monomethyl tartrate as a resolving agent, L (+) - II tartrate The monomethyl ester salt was separated from the mother liquor as impure D (-) - II.