(R)-lactaldehyde + 3-hydroxypyruvate <=> (3S,4S,5R)-3,4,5-trihydroxy-2-oxohexanoate
(r)-lactaldehyde + 3-hydroxypyruvate <=> (3s,4s,5r)-3,4,5-trihydroxy-2-oxohexanoate
(R)-lactaldehyde + 3-hydroxypyruvate <=> (3S,4S,5R)-3,4,5-trihydroxy-2-oxohexanoate
(r)-lactaldehyde + 3-hydroxypyruvate <=> (3s,4s,5r)-3,4,5-trihydroxy-2-oxohexanoate