代谢
吉西霉素在吸收过程中通过非酶促水解转化为活性化合物红霉素胺。60至90%的剂量在给药后35分钟内转化为红霉素胺,1.5小时后转化几乎完全。红霉素胺几乎不经过肝脏生物转化。在血清中没有检测到吉西霉素的其他代谢物。
Dirithromycin is converted by nonenzymatic hydrolysis during absorption to the active compound, erythromycylamine. Sixty to 90% of a dose is hydrolyzed to erythromycylamine within 35 minutes after dosing, and conversion is nearly complete after 1.5 hours. Erythromycylamine undergoes little or no hepatic biotransformation. No other metabolites of dirithromycin have been detected in the serum.
来源:DrugBank