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