{HEAD ~ Za} is phenyl substituted with 0–3 Rc, naphthyl substituted with 0–3 Rc, or a heterocycle substituted with 0–3 Rc and selected from the group: pyridyl, quinolinyl, tetrahydroquinolinyl, isoquinolinyl, tetrahydro isoquinolinyl, imidazolyl, pyridoimidazolyl, benzimidazolyl, indolyl, indolinyl, 1,1 dioxido 2,3 dihydro 4H 1,4 benzothiazin 4 yl, 1,1 dioxido 3,4 dihydro 2H 1 benzothiopyran 4 yl, 3,4 dihydro 2H chromen 4 yl, 2H chromen 4 yl, pyrazolyl, and {TAIL ~ pyrazolopyridinyl} 
is selected from
{ HEAD ~ Za } is phenyl substituted with 0–3 Rc , naphthyl substituted with 0–3 Rc , or a heterocycle substituted with 0–3 Rc and selected from the group : pyridyl , quinolinyl , tetrahydroquinolinyl , isoquinolinyl , tetrahydro isoquinolinyl , imidazolyl , pyridoimidazolyl , benzimidazolyl , indolyl , indolinyl , 1,1 dioxido 2,3 dihydro 4H 1,4 benzothiazin 4 yl , 1,1 dioxido 3,4 dihydro 2H 1 benzothiopyran 4 yl , 3,4 dihydro 2H chromen 4 yl , 2H chromen 4 yl , pyrazolyl , and { TAIL ~ pyrazolopyridinyl }
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