<P>The structures and names of compounds
8 and
8′ were incorrectly represented as dimethoxytrityl-protected dinucleotide phosphates.
The correct structures and names are as follows:</P>
<P>
O-(2′-deoxythymidin-3′-yl)-
O′-(3′-azido-3′-deoxythymidin-5′-yl) H-phosphonate (
8)</P><P></P>
<P>
O-(2′-deoxythymidin-3′-yl)-
O-(2′,3′-didehydro-2′,3′-dideoxythymidin-5′-yl) H-phosphonate (
8′)</P><P></P><P>The authors apologize for these errors.</P>
