(2<i>S</i>,3<i>S</i>)- and (2<i>R</i>,3<i>S</i>)-2-[2-(benzyloxy)ethyl]-3-(6-chloro-9<i>H</i>-purin-9-yl)oxolane
作者:G. Balayiannis、I. Argiris、D. Papaioannou、C. Kavounis
DOI:10.1107/s0108270199002784
日期:1999.6.15
The title diastereomeric compounds, C18H19ClN4O2, are the products formed when the (2S,3S)- and (2R,3S)-3-(5-amino-6-chloropyrimidinyl)amino-2-(2-benzyloxy)ethyloxolanes are treated with triethyl orthoformate in the presence of 4-toluenesulfonic acid. The crystal structure determination unambiguously shows the cis and trans orientations, respectively, of the 2-benzyloxyethyl and the 6-chloropurinyl substituents of the oxolanyl ring.