| 摘要 |
Phosphinic acid derivatives of the structural formula <IMAGE> or a pharmaceutically acceptable salt thereof, wherein R is H, alkyl or alkanoyloxymethylene; R1, R2, R3 and R4 are H, alkyl, alkenyl, alkenylalkyl, aryl, arylalkyl, heteroaryl, heteroarylalkyl, hydroxyalkyl, carboxyalkyl, thioalkyl, alkoxythioalkyl, aminoalkyl, alkylaminoalkyl, cycloalkyl-substituted alkyl or heterocycloalkyl; or R1 and R2 form a cycloalkyl ring of 3-8 members and R3 and R4 are as defined; or R3 and R4 form a cycloalkyl ring of 3-7 members and R1 and R2 are as defined; or R1 and R2 together, and R3 and R4 together, each form a cycloalkyl ring; R5 is -OR9 or -NHR9, wherein R9 is hydrogen or alkyl; n is 0 or 1; A1 is p-aminobenzoyl or p-aminobenzenesulfonyl, or A1 and R5 together form a radical of an alpha -aminoacyl derivative; and R6 is phenylmethoxycarbonyl, arylcarbonyl, heteroarylcarbonyl or -A2-R7, wherein A2 is a divalent alpha -aminoacyl radical, and R7 is a substituent on the alpha -amino atom selected from H, R8OCO-, R8SO2- and R8NHCO-, wherein R8 is aryl, arylmethyl or (C1-C8)alkyl; are disclosed for use as endothelin converting enzyme inhibitors; also disclosed are a genus of novel compounds wherein R3 and R4 form a cycloalkyl ring, and pharmaceutical compositions comprising said novel compounds.
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