- A Divergent Approach to Indoles and Oxazoles from Enamides by Directing-Group-Controlled Cu-Catalyzed Intramolecular C-H Amination and Alkoxylation
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A directing-group-controlled, copper-catalyzed divergent approach to indoles and oxazoles from enamides has been developed. The picolinamide-derived enamides undergo the intramolecular aromatic C-H amination in the presence of a Cu(OPiv)2 catalyst and an MnO2 oxidant to form the corresponding indoles in good yields. On the other hand, simpler aryl- or alkyl-substituted enamides are converted to the 2,4,5-trisubstituted oxazole frameworks via vinylic C-H alkoxylation under identical conditions. The copper catalysis can provide uniquely divergent access to indole and oxazole heteroaromatic cores of great importance in medicinal and material chemistry.
- Yamamoto, Chiaki,Takamatsu, Kazutaka,Hirano, Koji,Miura, Masahiro
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p. 9112 - 9118
(2017/09/11)
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- 17BETA-HYDROXYSTEROID DEHYDROGENASE TYPE 1 INHIBITORS FOR THE TREATMENT OF HORMONE-RELATED DISEASES
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The invention relates to the use of non-steroidal 17beta-hydroxysteroid dehydrogenase type 1 inhibitors for the treatment and prophylaxis of hormone-dependent, particularly estrogen-dependent, diseases.The invention further relates to suitable inhibitors and to a method for the production thereof.
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Page/Page column 17
(2010/08/18)
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- Antibacterial activity of a novel series of 3-bromo-4-(1H-3-indolyl)-2,5-dihydro-1H-2,5-pyrroledione derivatives - An extended structure-activity relationship study
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Compounds containing 3-bromo-2,5-dihydro-1H-2,5-pyrroledione and indole substructures were found to have antibacterial activity against resistant strains of Staphylococcus aureus and some other Gram positive bacteria. The investigated compounds exhibit mi
- Mahboobi, Siavosh,Eichhorn, Emerich,Winkler, Matthias,Sellmer, Andreas,Moellmann, Ute
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p. 633 - 656
(2008/09/19)
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- Design, synthesis, and biological evaluation of (hydroxyphenyl)naphthalene and -quinoline derivatives: Potent and selective nonsteroidal inhibitors of 17β-hydroxysteroid dehydrogenase type 1 (17β-HSD1) for the treatment of estrogen-dependent diseases
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Human 17β-hydroxysteroid dehydrogenase type 1 (17β-HSD1) catalyzes the reduction of the weak estrogen estrone (E1) to the highly potent estradiol (E2). This reaction takes place in the target cell where the estrogenic effect is exerted via the estrogen receptor (ER). Estrogens, especially E2, are known to stimulate the proliferation of hormone-dependent diseases. 17β-HSD1 is overexpressed in many breast tumors. Thus, it is an attractive target for the treatment of these diseases. Ligand- and structure-based drug design led to the discovery of novel, selective, and potent inhibitors of 17β-HSD1. Phenyl-substituted bicyclic moieties were synthesized as mimics of the steroidal substrate. Computational methods were used to obtain insight into their interactions with the protein. Compound 5 turned out to be a highly potent inhibitor of 17β-HSD1 showing good selectivity (17β-HSD2, ERα and β), medium cell permeation, reasonable metabolic stability (rat hepatic microsomes), and little inhibition of hepatic CYP enzymes.
- Frotscher, Martin,Ziegler, Erika,Marchais-Oberwinkler, Sandrine,Kruchten, Patricia,Neugebauer, Alexander,Fetzer, Ludivine,Scherer, Christiane,Müller-Vieira, Ursula,Messinger, Josef,Thole, Hubert,Hartmann, Rolf W.
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p. 2158 - 2169
(2008/12/20)
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- 2-Phenylindoles. Relationship between Structure, Estrogen Receptor Affinity, and Mammary Tumor Inhibiting Activity in the Rat
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A number of 2-phenylindole derivatives with one hydroxy group in the meta or para position of the phenyl ring and a second one in position 5, 6, or 7 of the indole nucleus were synthesized.In addition, different alkyl groups were introduced into positions
- Angerer, Erwin von,Prekajac, Jelica,Strohmeier, Josef
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p. 1439 - 1447
(2007/10/02)
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