<http://webisa.webdatacommons.org/prov/407209158>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/275913714> .
<http://webisa.webdatacommons.org/275913714>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/275913714>	<http://www.w3.org/ns/prov#value>	"after treatment with dilute acid to remove the N-protecting group, a compound of the formula XIII wherein R6 has meaning as defined herein for R1 except for hydrogen or aryl." .
<http://webisa.webdatacommons.org/275913714>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .