用R、S构型标记法标记化合物的构 型，并说明其相互关系 CH3 Br () H-Br (2) H-CH3 HC十H H3C-OH OH H CH3 CH3 CH3 () H-B 中 H-Br HO-H H3C- H十OH 中 Br-H OH CH3 CH3 (2R,3S) Br CH3 CH3 对映体 (2) H- CH3 OH H3C- OH 中 H Br H CH3 CH3 (2S,3R)想一想 用R、S构型标记法标记化合物的构 型，并说明其相互关系 (1) (2) (2R,3S) (2S,3R) 对 映 体 H CH3 Br H3C H OH (1) H CH3 Br H3C H OH H CH3 Br H OH CH3 HO CH3 H Br H CH3 Br CH3 H HO H CH3 H CH3 OH H Br CH3 H Br CH3 H3C OH H (2) H Br CH3 H3C OH H