SCH 900567 is a specific inhibitor of tumor necrosis factor-alpha converting enzyme and is a potential candidate for the treatment of rheumatoid arthritis. [3H]SCH 900567 was synthesized to support the initial drug metabolism and pharmacokinetics studies. Stable isotope-labeled [13C3, 15N]SCH 900567 was requested by the bioanalytical group as an internal standard for Liquid chromatography-tandem mass spectrometry (LC-MS/MS) method development as well as by the drug metabolism and pharmacokinetics group for a potential microdose study. [13C3, 15N]SCH 900567 is synthesized via a linear sequence of seven steps from commercially available materials in 2.6% overall yield. [14C]SCH 900567 was needed for a quantitative whole body autoradiography studies and was prepared from unlabeled Active Pharmaceutical Ingredient (API) via hydrolysis of the hydantoin moiety followed by rebuilding the hydantoin ring using potassium [14C]cyanate to give the desired product in 42.8% overall yield. Activation of the hydantoin moiety of SCH 900567 to achieve hydrolysis followed by derivatization of the resulting amino acid to avoid decarboxylation during cyclization is also discussed.
SCH 900567 是肿瘤坏死因子-α 转换酶的特异性
抑制剂,是治疗类风湿性关节炎的潜在候选药物。[3H]SCH 900567 的合成是为了支持最初的药物代谢和药代动力学研究。
生物分析小组要求将稳定同位素标记的[13C3, 15N]SCH 900567作为
液相色谱-串联质谱(LC-MS/MS)方法开发的内标,药物代谢和药代动力学小组则要求将其用于潜在的微剂量研究。[13C3,15N]SCH 900567 是由市售材料通过七个步骤的线性序列合成的,总产率为 2.6%。[14C]SCH900567是定量全身自显影研究的必需品,由未标记的活性药物成分(A
PI)通过
水解海因分子制备而成,然后使用[14C]
氰酸钾重建海因环,得到所需的产品,总产率为42.8%。此外,还讨论了如何活化 SCH 900567 的海因分子以实现
水解,然后对得到的
氨基酸进行衍生处理,以避免在环化过程中发生脱羧反应。