dTDP-3,4-didehydro-2,6-dideoxy-alpha-D-glucose => dTDP-2,6-dideoxy-D-glycero-hex-2-enos-4-ulose
dtdp-3,4-didehydro-2,6-dideoxy-alpha-d-glucose => dtdp-2,6-dideoxy-d-glycero-hex-2-enos-4-ulose
dTDP-3,4-didehydro-2,6-dideoxy-alpha-D-glucose => dTDP-2,6-dideoxy-D-glycero-hex-2-enos-4-ulose
dtdp-3,4-didehydro-2,6-dideoxy-alpha-d-glucose => dtdp-2,6-dideoxy-d-glycero-hex-2-enos-4-ulose