CuI-Catalyzed Selective 3-Alkylation of Indoles with <i>N</i>
-Tosylhydrazones and the I<sub>2</sub>
-Mediated Further Cyclization to Chromeno[2,3-<i>b</i>
]Indoles
作者:Chun-Bao Miao、Yan-Fang Sun、He Wu、Xiao-Qiang Sun、Hai-Tao Yang
DOI:10.1002/adsc.201800206
日期:2018.7.4
The CuI‐catalyzed reaction of indoles with N‐tosylhydrazones derived from the ortho‐/para‐hydroxybenzaldhydes affords selectively the C‐3 alkylated products rather than the N‐alkylated products. In addition, the I2‐mediated cyclization of the generated C‐3 alkylated products allows the concise synthesis of chromeno[2,3‐b]indole derivatives.
吲哚与碘化亚铜催化反应Ñ -tosylhydrazones从派生邻- /对-hydroxybenzaldhydes得到选择性地将Ç -3烷基化产物,而不是Ñ烷基化产品。此外,生成的C-3烷基化产物的I 2介导的环化反应可简化chromeno [2,3- b ]吲哚衍生物的合成。
Molecular modeling parameters predict antioxidant efficacy of 3-indolyl compounds
作者:H. G. Shertzer、M. Wilson Tabor、I. T. D. Hogan、Stephen J. Brown、Malcolm Sainsbury
DOI:10.1007/s002040050346
日期:1996.10.14
Many dietary constituents, such as indole-3-carbinol, are chemoprotective in toxicity and carcinogenicity: bioassays, Indole-Li-carbinol and related congeners appear to prefect partly via radical and electrophile scavenging. To develop better chemoprotective indoles with lower intrinsic toxicity, we performed molecular graphic and quantum-mechanical analyses of model indolyl compounds to ascertain the determinant molecular features for antioxidant activity. We examined eight structurally related 3-indolyl compounds for relationships between antioxidation potential (using in vitro lipid peroxidation assays) and electronic, polar, and steric parameters, including bond dissociation energies, bond lengths, dipole moments, electronic charge densities, and molecular size parameters. Electronic features of the 3-methylene carbon and 1-nitrogen were not predictive of antioxidative potency due to extensive charge delocalization of the cation radical following electron abstraction from the nitrogen, Antioxidant efficacy of 3-indolyl compounds was most strongly predicted by molecular size parameters and by the energy of electron abstraction as calculated from the difference in heat of formation between the parent compound and its cation radical, A highly predictive multiple linear regression correlation model (r(2) = 0.97) was obtained using the parameters of heal of formation, molecular weight, log P, and diplole moment.
PROCESSES AND HOST CELLS FOR GENOME, PATHWAY, AND BIOMOLECULAR ENGINEERING
申请人:enEvolv, Inc.
公开号:EP3027754A1
公开(公告)日:2016-06-08
[EN] PROCESSES AND HOST CELLS FOR GENOME, PATHWAY, AND BIOMOLECULAR ENGINEERING<br/>[FR] PROCÉDÉS ET CELLULES HÔTES POUR INGÉNIERIE BIOMOLÉCULAIRE, GÉNOMIQUE ET DE LA VOIE
申请人:ENEVOLV INC
公开号:WO2015017866A1
公开(公告)日:2015-02-05
The present disclosure provides compositions and methods for genomic engineering.