SynthesisandBiologicalEvaluationofOleanolicAcidDerivativesasNovelInhibitorsofProteinTyrosinePhosphatase1B,李慧,邹慧,Aseriesofoleanolicacid(OA)derivativeshavebeensynthesizedandtheirinhibitoryeffectsonPTP1B,TCPTPandrelatedPTPsareevaluated.Somecompoundswit