<http://webisa.webdatacommons.org/253461542> <http://www.w3.org/ns/prov#wasQuotedFrom> <freepatentsonline.com> . <http://webisa.webdatacommons.org/prov/118069639> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/253461542> . <http://webisa.webdatacommons.org/253461542> <http://www.w3.org/ns/prov#value> "enyl-9-methoxycarbonyl, cyclopentyloxycarbonyl, adamantyloxycarbonyl, cyclohexyloxycarbonyl, phenylthiocarbonyl, and the like, arylalkyl groups such as benzyl, triphenylmethyl, benzyloxymethyl, and the like and silyl groups such as trimethylsilyl, and the like." . <http://webisa.webdatacommons.org/253461542> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Entity> .