Convenient syntheses of the in vivo carbohydrate metabolites of mycophenolic acid: reactivity of the acyl glucuronide
作者:Amy E. Jones、Helen K. Wilson、Paul Meath、Xiaoli Meng、David W. Holt、Atholl Johnston、Michael Oellerich、Victor W. Armstrong、Andrew V. Stachulski
DOI:10.1016/j.tetlet.2009.06.060
日期:2009.9
Following in vivo use of mycophenolic acid, the O-aryl and O-acyl glucuronides, as well as the recently discovered O-aryl glucoside (Scheme 1), are all found as metabolites. We describe convenient preparations of all three derivatives. The phenolic glycosides are obtained by phase-transfer-catalysed alkylation of methyl mycophenolate in very high yield, as an excellent alternative to the Königs-Knorr
在体内使用麦考酚酸后,O-芳基和O-酰基葡糖醛酸苷以及最近发现的O-芳基葡糖苷(方案1)均被发现是代谢产物。我们描述了所有三种衍生物的方便制备方法。酚类糖苷是通过相转移催化的麦考酚酸甲酯烷基化获得的,产率很高,可作为柯尼希斯-克诺尔反应的绝佳替代品。我们仔细优化了早期的酰基葡糖醛酸苷合成方法,从而以更高的收率获得了高纯度的产品。最后,我们描述了合成酰基葡糖醛酸苷在证明其对已知靶蛋白的反应性方面具有对天然获得的物质的优异响应的价值。