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