(3R,4R)-4,5-dihydroxy-L-isoleucine residue
(3r,4r)-4,5-dihydroxy-l-isoleucine residue
An <small>L</small>-isoleucine residue that is substituted by hydroxy groups at positions 4 and 5 (the 3<i>R</i>,4<i>R</i> diastereoisomer).