Option Explicit
Sub ExportDiapos()
Dim oTempPres As Presentation
Dim sFileName As String
Dim x As Long, y As Long
For x = 1 To ActivePresentation.Slides.Count
sFileName = ActivePresentation.Path & "\" & "Slide_" & x & ".pptx"
ActivePresentation.SaveCopyAs sFileName
Set oTempPres = Presentations.Open(sFileName, , , False)
For y = (x + 1) To oTempPres.Slides.Count
oTempPres.Slides(x + 1).Delete
Next y
For y = 1 To x - 1
oTempPres.Slides(1).Delete
Next y
oTempPres.Save
oTempPres.Close
Next x
End Sub