Scheme 3 illustrates a method of synthesizing the R and S enantiomers of the starting materials of the formula VII wherein {HEAD ~ X} is {TAIL ~ sulfur} 
Scheme 3 illustrates a method of synthesizing the R and S enantiomers of the starting materials of the formula VII wherein { HEAD ~ X } is { TAIL ~ sulfur }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL