lv(2S,3S)-2,3-bis-(benzoiloksimetil)ciklobutanons en(2S,3S)-2,3-bis(benzoyloxymethyl)cyclobutanone en(1S,2S,3S)-2,3-bis(benzoyloxymethyl)cyclobutanol lv(1S,2S,3S)-2,3-bis-(benzoiloksimetil)ciklobutanols en(1R,2S)-(-)-chloroephedrine lv2S,3S)-3-(terc-butoksikarbonilamino)-2-hidroksi-4-fenilsviestskābe lv(1R,2S)-(-)-hlorefedrīns en(1R,2S,3S,6R)-[(S)-1-phenylethyl]-3,6-epoxytetrahydrophthalimide lv(1R,2S,3S,6R)-[(S)-1-feniletil]-3,6-epoksitetrahidroftalimīds en(1S,2S)-(+)-chloropseudoephedrine lv(1S,2S)-(+)-hlorpseidoefedrīns en2S,3S)-3-(tert-butoxycarbonylamino)-2-hydroxy-4-phenylbutyric acid