| abstract |
Kind Code: A1 Abstract: Prodrug compounds, their preparation and their use, such as the treatment of liver or non-liver diseases by intervening in the molecular pathways of the liver. A compound of formula IV, or a stereoisomer or pharmaceutically acceptable salt thereof. In the formula, R 41 is H; Z 4 is CR 46 R 47 and the like; R 42 to R 47 are specific substituents; M is a biological agent, or a part of a biological agent, or biological agent. A prodrug of the agent; X 4 is O, etc .; n is 0, 1, 2, or 3. [Selection diagram] None |