The mixture is then treated with {TAIL ~ an anhydrous tertiary amine base}, such as for example, pyridine, followed by benzoyl chloride to acylate {HEAD ~ the resulting alcohol} 
The mixture is then treated with { TAIL ~ an anhydrous tertiary amine base } , such as for example , pyridine , followed by benzoyl chloride to acylate { HEAD ~ the resulting alcohol }
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD