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