The R enantiomer may be prepared in an analogous fashion by replacing the S enantiomer of the compound of {TAIL ~ formula} {HEAD ~ IX} depicted in scheme 3 and referred to in Example 3A with the corresponding R enantiomer  
The R enantiomer may be prepared in an analogous fashion by replacing the S enantiomer of the compound of { TAIL ~ formula } { HEAD ~ IX } depicted in scheme 3 and referred to in Example 3A with the corresponding R enantiomer
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH