<http://webisa.webdatacommons.org/163685028>	<http://www.w3.org/ns/prov#value>	"In the above scheme, R2, R4, R5, R6, R7, R9, R9a, A and B are as defined above, P is a nitrogen protecting group, and X is a carboxylic acid activating group." .
<http://webisa.webdatacommons.org/163685028>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/prov/516246970>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/163685028> .
<http://webisa.webdatacommons.org/163685028>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/52624461>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/163685028> .