Phenylacetic acid derivatives of the formula: <IMAGE> wherein R1 is hydrogen or <IMAGE> wherein R5 is an alkyl group of 1-6 carbon atoms or an aryl group; R2 and R3 are independently hydrogen or an alkyl group of 1-4 carbon atoms; R4 is hydrogen or an alkyl group of 1-4 carbon atoms, have been found to possess immunomodulating activity.
申请公布号
US4720506(A)
申请公布日期
1988.01.19
申请号
US19870045161
申请日期
1987.05.04
申请人
NIPPON SHINYAKU COMPANY, LIMITED;MITSUBISHI CHEMICAL INDUSTRIES LIMITED
