Does this work?
Code:
Dim oPara As Paragraph
Dim oRng As Range, oParaRng As Range
Set oRng = ActiveDocument.Range
oRng.Text = Replace(oRng.Text, " ", Chr(39) & ", " & Chr(39))
For Each oPara In oRng.Paragraphs
Set oParaRng = oPara.Range
oParaRng.MoveEnd Unit:=wdCharacter, Count:=-1
oParaRng.Text = "('" & oParaRng.Text & "'),"
Next oPara