{HEAD ~ Za} is {TAIL ~ 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 pyrazolopyridinyl 
is
{ HEAD ~ Za } is { TAIL ~ 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 pyrazolopyridinyl
HEAD HEAD HEAD HEAD HEAD REL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH