Ortho-selectivity in SNAr substitutions of 2,4-dihaloaromatic compounds. Reactions with anionic nucleophiles
作者:Michael D. Wendt、Aaron R. Kunzer
DOI:10.1016/j.tetlet.2010.03.124
日期:2010.6
in a variety of solvents. Substrates showed strong preferences for ortho substitution in most cases. Evidence is presented for activating group-dependent coordination, which contributes to very high ortho-selectivity in nonpolar solvents. This also drives the overall reaction rate in these solvents, and is of close to the same magnitude of rate increase derived from polar solvents. para-Products are
This invention relates to indole derivatives which have anti-cancer activity. According to the invention there is provided an indole derivative of the formula I :
in which X is an oxygen or sulphur atom, Ra is a phenyl radical which is optionally substituted by one or two groups selected from halogen atoms and 1-6C alkyl, 1-6C alkoxy and trifluoromethyl radicals and Rb is a hydrogen atom or a 2-6C alkoxycarbonyl radical. Manufacturing processes and pharmaceutical compositions are also described.
本发明涉及具有抗癌活性的吲哚衍生物。根据本发明,提供了一种式 I 的吲哚衍生物:
其中 X 为氧原子或硫原子,Ra 为苯基,可任选被一或两个选自卤素原子、1-6C 烷基、1-6C 烷氧基和三氟甲基的基团取代,Rb 为氢原子或 2-6C 烷氧羰基。还描述了制造工艺和药物组合物。
CARUSO, ANDREW J.;COLLEY, ALICE M.;BRYANT, GARY L., J. ORG. CHEM., 56,(1991) N, C. 862-865
作者:CARUSO, ANDREW J.、COLLEY, ALICE M.、BRYANT, GARY L.