Design and synthesis of 2,3,4,9-tetrahydro-1H-carbazole and 1,2,3,4-tetrahydro-cyclopenta[b]indole derivatives as non-nucleoside inhibitors of hepatitis C virus NS5B RNA-dependent RNA polymerase
A novel class of HCV NS5B RNA dependent RNA polymerase inhibitors containing 2,3,4,9-tetrahydro-1H-carbazole and 1,2,3,4-tetrahydro-cyclopenta[b]indole scaffolds were designed and synthesized. Optimization of the aromatic region showed preference for 5,8-disubstitution pattern in both the scaffolds examined while favoring the n-propyl moiety for the C-1 position. 1,2,3,4-tetrahydro-cyclopenta[b]indole
Versatile Alkylation of (Hetero)Aryl Iodides with Ketones via β-C(sp<sup>3</sup>)–H Activation
作者:Ru-Yi Zhu、Luo-Yan Liu、Han Seul Park、Kai Hong、Yongwei Wu、Chris H. Senanayake、Jin-Quan Yu
DOI:10.1021/jacs.7b09761
日期:2017.11.15
We report Pd(II)-catalyzed β-C(sp3)-H (hetero)arylation of a variety of ketones using a commercially available 2,2-dimethyl aminooxyacetic acid auxiliary. Facile installation and removal of the auxiliary as well as its superior scope for both ketones and (hetero)aryl iodides overcome the significant limitations of the previously reported β-C(sp3)-H arylation of ketones. The ready availability of ketones
A novelfreeradical initiated ring expansion of haloalkyl β-keto esters is described. Following alkylation of the β-keto ester with the appropriate dihalide, the resulting halide is treated at reflux with tri-n-butyltin hydride. Rearrangement to the homologated γ-keto ester occurs smoothly. An oxy radical intermediate is proposed for the reaction.
A systematic study of the diastereoselectivity of the radical carboazidation of methylenecyclohexane derivatives is presented. Several substitution patterns leading to a high level of stereocontrol have been identified. Axial attack is the preferred reaction pathway for cyclohexyl radicals, and excellent stereoselectivities can be obtained by introducing an axial substitutent at position 2. In this
A New Synthesis of 3-Alkyl-2-hydroxy-2-cyclohexen-1-ones
作者:Kikumasa Sato、Seiichi Inoue、Masao Ohashi
DOI:10.1246/bcsj.47.2519
日期:1974.10
one (Ia), a flavor component of coffee aroma, is described. The seleniumdioxideoxidation of ethyl 1-methyl-2-oxocyclohexanecarboxylate (IIa) gave α-diketone (IIIa), which was then hydrolyzed and decarboxylated to afford Ia. The treatment of IIa with cupric chloride in 50% aceticacid also yielded Ia. The dimethyl sulfoxide oxidation of ethyl 3-bromo-1-methyl-2-oxocyclohexanecarboxylate (IV) afforded