R is phenyl, W substituted phenyl, naphthyl, W substituted naphthyl, benzodioxolyl, heteroaryl, W substituted heteroaryl, benzofused heteroaryl and W substituted benzofused heteroaryl, wherein heteroaryl is selected from the group consisting of pyrrolyl, pyridinyl, pyrimidinyl, pyrazinyl, triazinyl, imidazolyl, thiazolyl, pyrazolyl, thienyl, oxazolyl and furanyl, and for {HEAD ~ nitrogen} containing heteroaryls, {TAIL ~ the N oxides} thereof 
containing
R is phenyl , W substituted phenyl , naphthyl , W substituted naphthyl , benzodioxolyl , heteroaryl , W substituted heteroaryl , benzofused heteroaryl and W substituted benzofused heteroaryl , wherein heteroaryl is selected from the group consisting of pyrrolyl , pyridinyl , pyrimidinyl , pyrazinyl , triazinyl , imidazolyl , thiazolyl , pyrazolyl , thienyl , oxazolyl and furanyl , and for { HEAD ~ nitrogen } containing heteroaryls , { TAIL ~ the N oxides } thereof
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