麻黄碱是十分重要的生物碱。从苯丙酮 (2 )合成的产物中 ,含两对对映异构体 ,其中的左旋麻黄碱[化学名 (1 R,2 S) - 1 -苯基 - 2 -甲胺基丙醇 ]和右旋伪麻黄碱 [(1 R,2 R)异构体 ],均为中药草麻黄和木贼麻黄中的活性成分[1] ,其盐酸盐具有活性相似但程度不同的药理作用。另两种 Ephedrine is a very important alkaloid. The product synthesized from propiophenone (2) contained two pairs of enantiomers, of which the ephedrine [chemical name (1 R, 2 S) -1 -phenyl- 2 -methylaminopropanol] and Dex pseudoephedrine [(1 R, 2 R) isomer], all of the active ingredients in the Herba Ephedrae and Cirrhabadi [1], its hydrochloride with similar activity but varying degrees of pharmacological effects. The other two