- Expansion of substrate scope for nitroxyl radical/copper-catalyzed aerobic oxidation of primary alcohols: A guideline for catalyst selection
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Four distinctive sets of optimum nitroxyl radical/copper salt/additive catalyst combinations have been identified for accommodating the aerobic oxidation of various types of primary alcohols to their corresponding aldehydes. Interestingly, less nucleophilic catalysts exhibited higher catalytic activities for the oxidation of particular primary allylic and propargylic alcohols to give α,β-unsaturated aldehydes that function as competent Michael acceptors. The optimum conditions identified herein were successful in the oxidation of various types of primary alcohols, including unprotected amino alcohols and divalent-sulfur-containing alcohols in good-to-high yields. Moreover, N-protected alaninol, an inefficient substrate in the nitroxyl radical/ copper-catalyzed aerobic oxidation, was oxidized in good yield. On the basis of the optimization results, a guideline for catalyst selection has been established.
- Iwabuchi, Yoshiharu,Nagasawa, Shota,Sasaki, Ryota,Sasano, Yusuke,Yamaichi, Aoto
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p. 488 - 497
(2021/05/27)
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- Azacyclo diketone compound and preparation method thereof
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The invention provides an azacyclo diketone compound, which is a compound represented by the following structure defined in the specification, or a pharmaceutically acceptable salt thereof. The invention provides a compound having an inhibitory activity on influenza (flu) virus proliferation, particularly on influenza-related cap-dependent endonuclease to inhibit influenza virus proliferation so as to treat or prevent influenza. The present invention relates to a substituted azacyclo diketone compound having inhibitory activity on cap-dependent endonuclease, and a pharmaceutical composition containing the substituted azacyclo diketone compound.
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Paragraph 0730-0734; 0737-0738
(2020/06/17)
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- Discovery and Characterization of BAY 1214784, an Orally Available Spiroindoline Derivative Acting as a Potent and Selective Antagonist of the Human Gonadotropin-Releasing Hormone Receptor as Proven in a First-In-Human Study in Postmenopausal Women
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The growth of uterine fibroids is sex hormone-dependent and commonly associated with highly incapacitating symptoms. Most treatment options consist of the control of these hormonal effects, ultimately blocking proliferative estrogen signaling (i.e., oral contraceptives/antagonization of human gonadotropin-releasing hormone receptor [hGnRH-R] activity). Full hGnRH-R blockade, however, results in menopausal symptoms and affects bone mineralization, thus limiting treatment duration or demanding estrogen add-back approaches. To overcome such issues, we aimed to identify novel, small-molecule hGnRH-R antagonists. This led to the discovery of compound BAY 1214784, an orally available, potent, and selective hGnRH-R antagonist. Altering the geminal dimethylindoline core of the initial hit compound to a spiroindoline system significantly improved GnRH-R antagonist potencies across several species, mandatory for a successful compound optimization in vivo. In a first-in-human study in postmenopausal women, once daily treatment with BAY 1214784 effectively lowered plasma luteinizing hormone levels by up to 49%, at the same time being associated with low pharmacokinetic variability and good tolerability.
- Panknin, Olaf,Wagenfeld, Andrea,Bone, Wilhelm,Bender, Eckhard,Nowak-Reppel, Katrin,Fernández-Montalván, Amaury E.,Nubbemeyer, Reinhard,B?urle, Stefan,Ring, Sven,Schmees, Norbert,Prien, Olaf,Sch?fer, Martina,Friedrich, Christian,Zollner, Thomas M.,Steinmeyer, Andreas,Mueller, Thomas,Langer, Gernot
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p. 11854 - 11881
(2020/11/26)
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- Nickel-Catalyzed Selective Reduction of Carboxylic Acids to Aldehydes
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The direct reduction of carboxylic acids to aldehydes is a fundamental transformation in organic synthesis. The combination of an air-stable Ni precatalyst, dimethyl dicarbonate as an activator, and silane reductant effects this reduction for a wide variety of substrates, including pharmaceutically relevant structures, in good yields and with no overreduction to alcohols. Moreover, this methodology is scalable, allows access to deuterated aldehydes, and is also compatible with one-pot utilization of the aldehyde products.
- Iosub, Andrei V.,Morav?ík, ?tefan,Wallentin, Carl-Johan,Bergman, Joakim
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supporting information
p. 7804 - 7808
(2019/10/14)
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- Photochemical Homologation for the Preparation of Aliphatic Aldehydes in Flow
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Cheap and readily available aqueous formaldehyde was used as a formylating reagent in a homologation reaction with nonstabilized diazo compounds, enabled by UV photolysis of bench-stable oxadiazolines in a flow photoreactor. Various aliphatic aldehydes were synthesized along with the corresponding derivatized alcohols and benzimidazoles. No transition-metal catalyst or additive was required to affect the reaction, which proceeded at room temperature in 80 min.
- Chen, Yiding,Leonardi, Marco,Dingwall, Paul,Labes, Ricardo,Pasau, Patrick,Blakemore, David C.,Ley, Steven V.
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p. 15558 - 15568
(2019/01/04)
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- Selective Palladium(II)-Catalyzed Carbonylation of Methylene β-C?H Bonds in Aliphatic Amines
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Palladium(II)-catalyzed C?H carbonylation reactions of methylene C?H bonds in secondary aliphatic amines lead to the formation of trans-disubstituted β-lactams in excellent yields and selectivities. The generality of the C?H carbonylation process is aided by the action of xantphos-based ligands and is important in securing good yields for the β-lactam products.
- Cabrera-Pardo, Jaime R.,Trowbridge, Aaron,Nappi, Manuel,Ozaki, Kyohei,Gaunt, Matthew J.
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supporting information
p. 11958 - 11962
(2017/09/20)
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- Ugi-type reactions of spirocyclic indolenines as a platform for compound library generation
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A simple and efficient method for the synthesis of highly substituted spiroindoline derivatives is presented. A Fischer indolization is combined with Ugi-type reactions to explore the chemical space concerning this privileged structure. Moreover, spiropip
- Estévez, Verónica,Kloeters, Laura,Kwietniewska, Natalia,Vicente-García, Esther,Ruijter, Eelco,Orru, Romano V.A.
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supporting information
p. 376 - 380
(2017/02/10)
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- SPIROINDOLINE DERIVATIVES FOR USE AS GONADOTROPIN-RELEASING HORMONE RECEPTOR ANTAGONISTS
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Spiroindoline derivatives, processes for their preparation and pharmaceutical compositions thereof, their use for the treatment of diseases, and their use for the manufacture of medicaments for the treatment of diseases, especially sex-hormone-related diseases in both men and women, in particularly those selected from the group of endometriosis, uterine leiomyoma (fibroids), polycystic ovarian disease, menorrhagia, dysmenorrhea, hirsutism, precocious puberty, gonadal steroid-dependent neoplasia such as cancers of the prostate, breast and ovary, gonadotrope pituitary adenomas, sleep apnea, irritable bowel syndrome, premenstrual syndrome, benign prostatic hypertrophy, contraception, infertility and assisted reproductive therapy such as in vitro fertilization. The present application relates in particular to spiroindoline derivatives as gonadotropin-releasing hormone (GnRH) receptor antagonists.
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Page/Page column 37
(2014/10/29)
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- SPIROINDOLINE DERIVATIVES AS GONADOTROPIN- RELEASING HORMONE RECEPTOR ANTAGONISTS
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Spiroindoline derivatives, process for their preparation and pharmaceutical compositions thereof, their use for the treatment and/or prophylaxis of diseases, and their use for the manufacture of medicaments for the treatment and/or prophylaxis of diseases, especially sex-hormone-related diseases in both men and women, in particularly those selded from the group of endometriosis, uterine fibroids, polycystic ovarian disease, hirsutism, precocious puberty, gonadal steroid-dependent neoplasia such as cancers of the prostate, breast and ovary, gonadotrope pituitary adenomas, sleep apnea, irritable bowel syndrome, premenstrual syndrome, benign prostatic hypertrophy, contraception and infertility (e.g., assisted reprodudive therapy such as in vitro fertilization). The present application relates in particular to spiroindoline derivatives as gonadotropin-releasing hormone (GnRH) receptor antagonists.
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Page/Page column 49
(2013/07/31)
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- Discovery of vinylcycloalkyl-substituted benzimidazole TRPM8 antagonists effective in the treatment of cold allodynia
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Thermosensitive transient receptor potential melastatin 8 (TRPM8) antagonists are considered to be potential therapeutic agents for the treatment of cold hypersensitivity. The discovery of a new class of TRPM8 antagonists that shows in vivo efficacy in the rat chronic constriction injury (CCI)-induced model of neuropathic pain is described.
- Calvo, Raul R.,Meegalla, Sanath K.,Parks, Daniel J.,Parsons, William H.,Ballentine, Shelley K.,Lubin, Mary Lou,Schneider, Craig,Colburn, Raymond W.,Flores, Christopher M.,Player, Mark R.
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scheme or table
p. 1903 - 1907
(2012/04/04)
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- NOVEL COMPOUNDS
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The invention provides novel hydantoin derivatives; processes for their preparation; pharmaceutical compositions containing them; a process for preparing the pharmaceutical compositions; and their use in therapy.
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Page/Page column 60
(2009/03/07)
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- Bicyclo-octane and bicyclo-nonane derivatives, processes for their preparation and their use as herbicides
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Bicyclo-octane and bicyclo-nonane derivatives are described having herbicidal and plant growth regulating properties. The derivatives are based on the general formula
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- Condensed seven-membered ring compounds, their production and use
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Novel condensed seven-membered ring compounds of the formula: STR1 [wherein R1 and R2 are independently hydrogen, halogen, trifluoromethyl, lower alkyl or lower alkoxy, or both jointly form tri- or tetramethylene; R3 and R5 are independently hydrogen, lower alkyl or aralkyl; R4 is hydrogen or lower alkyl; R6 is a condensed or non-condensed hetero-alicyclic containing at least one atom of N, O and S as a ring-forming atom which may be substituted; A is an alkylene chain; n is 1 or 2] and salts thereof. These compounds exhibit inhibitory activity on angiotensin converting enzyme and so forth, and are of value as an agent for diagnosis, prevention and treatment of circulatory diseases, such as hypertension, cardiopathy and cerebral apoploxy.
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- 3-Amino-4-oxo-2,3,4,5-tetrahydro-1,5-benzoxazepine derivatives
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Novel 3-amino-4-oxo-2,3,4,5-tetrahydro-1,5-benzoxazepine derivatives of the formula STR1 [wherein R1 and R2 are independently hydrogen, halogen, trifluoromethyl, lower alkyl or lower alkoxy, or both jointly form tri- or tetramethylene; R3 is hydrogen, optionally substituted lower alkyl or optionally substituted aralkyl; R4 is hydrogen, optionally substituted alkyl, optionally substituted aralkyl or optionally substituted cycloalkylalkyl; Y is a carboxyl group which may be esterified or amidated; m is 1 or 2] and salts thereof. These compounds and salts thereof exhibits inhibitory activity on angiotensin converting enzyme and so forth, and are of value as an agent for diagnosis, prevention and treatment of circulatory diseases (e.g. hypertension, cardiopathy, cerebral apoploxy).
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