To convert PDF Documents to Word format.

wordOutputOptions = WordOutputOptions()

# Optionally convert only the first page
wordOutputOptions.SetPages(1, 1)

# Requires the Structured Output module
Convert.ToWord(filename, output_filename, wordOutputOptions)

To convert PDF Documents to Excel format.

excelOutputOptions = ExcelOutputOptions()

# Optionally convert only the first page
excelOutputOptions.SetPages(1, 1)

# Requires the Structured Output module
Convert.ToExcel(filename, output_filename, excelOutputOptions)

To convert PDF Documents to PowerPoint format.

powerPointOutputOptions = PowerPointOutputOptions()

# Optionally convert only the first page
powerPointOutputOptions.SetPages(1, 1)

# Requires the Structured Output module
Convert.ToPowerPoint(filename, output_filename, powerPointOutputOptions)

Convert PDF to Office
Full sample code which shows how to convert generic PDF documents to Word, Excel, PowerPoint format