In one aspect, the invention relates to compounds having the formula:
where R1-R6, a, b, Z, and X are as defined in the specification, or a pharmaceutically acceptable salt thereof. These compounds have neprilysin inhibition activity. In another aspect, the invention relates to pharmaceutical compositions comprising such compounds; methods of using such compounds; and processes and intermediates for preparing such compounds.
[EN] PRODRUG OF ANTIVIRAL NUCLEOSIDE ANALOGUES, AND COMPOSITION AND USE THEREOF<br/>[FR] PROMÉDICAMENT D'ANALOGUES NUCLÉOSIDIQUES ANTIVIRAUX, COMPOSITION ET UTILISATION ASSOCIÉES<br/>[ZH] 一种抗病毒核苷类似物前药及其组合物、用途