Xenobiotica p. 261 - 269 (2020)
Update date:2022-08-16
Topics:
Mizoi, Kenta
Takahashi, Masato
Sakai, Sachiko
Ogihara, Takuo
Haba, Masami
Hosokawa, Masakiyo
1. We investigated the structure-activity relationship of 31 kinds of synthesized atorvastatin esters, thioesters, amides and lactone, selected as prodrug models, for metabolic activation by microsomes and hydrolases. 2. The susceptibility to human carboxylesterase 1 (hCES1) was influenced not only by the size of the acyl group and alkoxy group but also by the degree of steric crowding around the alkoxy group. 3. The susceptibility to human carboxylesterase 2 (hCES2) increased with a decrease in electron density around the alkoxy group of the substrate. 4. Lactone was specifically hydrolyzed by paraoxonase 3 (PON3). 5. These findings should be useful in prodrug design for controlling metabolic activation.
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