ID 1.1.1.229 DE diethyl 2-methyl-3-oxosuccinate reductase. CA diethyl (2R,3R)-2-methyl-3-hydroxysuccinate + NADP(+) = diethyl 2-methyl- CA 3-oxosuccinate + H(+) + NADPH. CC -!- Also acts on diethyl (2S,3R)-2-methyl-3-hydroxysuccinate; and on the CC corresponding dimethyl esters. //