A process 1, characterized in that {HEAD ~ the triphenylmethane} is {TAIL ~ the triphenylmethyl protecting group} 
A process 1 , characterized in that { HEAD ~ the triphenylmethane } is { TAIL ~ the triphenylmethyl protecting group }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL