Total synthesis of cordatanine, structural reassignment of drymaritin, and anti-inflammatory activity of synthetic precursors
作者:Hsin Wei Fang、Yu-Ren Liao、Tsong-Long Hwang、Po-Chuen Shieh、Kuo-Hsiung Lee、Hsin-Yi Hung、Tian-Shung Wu
DOI:10.1016/j.bmcl.2015.07.074
日期:2015.9
study, cordatanine, with a canthin-6-one skeleton, was totally synthesized in four steps via a Pictet–Spengler reaction using tryptamine and methyl glyoxylate with a total yield of 8%. The NMR spectra of synthesized cordatanine compared well with those of drymaritin isolated by Hsieh et al., confirming the need to revise the original structural assignment. In addition, kumujian A, a synthetic intermediate
在这项研究中,使用色胺和乙醛酸甲酯通过Pictet-Spengler反应通过四个步骤完全合成了具有canthin-6-one骨架的Cordatanine,总产率为8%。合成的金刚烷胺的NMR光谱与Hsieh等人分离的干马里汀的NMR光谱相比较,证实需要修改原始结构。此外,合成中间体kumujian A显示出显着的抗炎作用,既抑制了超氧阴离子的产生(IC 50 4.87μg/ mL),又抑制了弹性蛋白酶的释放(IC 50 6.29μg/ mL)。