<http://webisa.webdatacommons.org/prov/375007018>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/233734728> .
<http://webisa.webdatacommons.org/233734728>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/233734728>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<docstoc.com> .
<http://webisa.webdatacommons.org/233734728>	<http://www.w3.org/ns/prov#value>	"This example illustrates preparation of compounds of Formula II wherein R.sup.1 is an alkyl group other than an alkyl group of a naturally occurring amino acid side chain. In particular R.sup.1 is a t-butyl group." .