The 20- and 21-membered macrolide subunits of merremoside-type resin glycosides with interesting bioactivity were synthesized via a macrolactonization approach using Corey-Nicolaou protocol in 14 steps with overall yields of 0.7% for 17 and 3.5% for 18 from (R)-glycidol. Further debenzylation of the macrolide 18 led to diol 19 that might act as the key substrate for transformation into merremosides A-G.
具有有趣
生物活性的梅瑞莫苷类
树脂糖苷的20和21-membered大环单元通过使用Corey-Nicolaou方案的宏环内酯化方法合成,完成了14个步骤,整体产率为17的0.7%和18的3.5%,原料为(R)-甘
油醇。对大环化合物18进一步去苄基化,得到二醇19,该二醇可能作为转化为梅瑞莫苷A-G的关键底物。