It also discloses {HEAD ~ novel methods} for {TAIL ~ the preparation} of sugar substrates and methods for the preparation of anthracycline antibiotics 
It also discloses { HEAD ~ novel methods } for { TAIL ~ the preparation } of sugar substrates and methods for the preparation of anthracycline antibiotics
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH