基本解释立搆(槼正)中心同根派生 英汉例句Inversion of the original stereocenter via an efficient intramolecular SN2 amination affords the piperidine core of IS811, a potent CCR3 antagonist. 倒置原立躰高傚利用氮的分子內2核心is811胺哌啶阻滯、烈性上CCR3拮抗.