Concise synthesis of 2-methoxyestradiol through C(sp2)-H methoxylation
作者:Mo-Ran Sun、Ying-Ying Kang、Yong-Tao Duan、Hong-Min Liu
DOI:10.1016/j.steroids.2020.108697
日期:2020.10
palladium-catalyzed direct C(sp2)-H methoxylation of 2-aryloxypyridines. Using2-pyridyloxyl as the directinggroup, Pd(OAc)2 as the catalyst, PhI(OAc)2 as the oxidant and methanol as both the methoxylation reagent and solvent, the methoxy group could be handily installed at the 2-position of 3-(2-pyridoxy) estradiol (2). Subsequently, the pyridyl group could be easily removed by nucleophilic substitution
vivo was confirmed by zebrafish xenograft. Furthermore, 9i could effectively inhibit the proliferation and metastasis of MCF-7 cells in vitro and in zebrafish xenograft. The satisfactory physicochemical property and metabolic stability of 9i further indicated that it can act as a promising and potent anti-angiogenesis, inhibiting proliferation and metastasis of breast cancer agent via targeting tubulin