Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... The title compound was prepared efficiently by O-alkylation of (R)-ethyl lactate with the O-trifluoromethylsulphonyl derivative of (S)-ethyl lactate and further transformations of the two ester functionalities of the homochiral ether thus obtained. ... Compound (+)-4 has been reported in literature 10 ; ...