80912-56-7Relevant academic research and scientific papers
Cobalt-Catalyzed Desymmetric Isomerization of Exocyclic Olefins
Lan, Yu,Liu, Qiang,Liu, Shihan,Liu, Xufang,Rong, Xianle
, p. 20633 - 20639 (2021/12/17)
Chiral cyclic olefins, 1-methylcyclohexenes, are versatile building blocks for the synthesis of pharmaceuticals and natural products. Despite the prevalence of these structural motifs, the development of efficient synthetic methods remains an unmet challenge. Herein we report a novel desymmetric isomerization of exocyclic olefins using a series of newly designed chiral cobalt catalysts, which enables a straightforward construction of chiral 1-methylcyclohexenes with diversified functionalities. The synthetic utility of this methodology is highlighted by a concise and enantioselective synthesis of a natural product, β-bisabolene. The versatility of the reaction products is further demonstrated by multifarious derivatizations.
GLYCOLATE OXIDASE INHIBITORS FOR THE TREATMENT OF DISEASE
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Paragraph 00974-00976; 002080; 002081, (2021/01/22)
Described herein are compounds, methods of making such compounds, pharmaceutical compositions and medicaments containing such compounds, and methods of using such compounds to treat or prevent diseases or disorders associated with a defect in glyoxylate metabolism, for example a disease or disorder associated with the enzyme glycolate oxidase (GO) or alterations in oxalate metabolism. Such diseases or disorders include, for example, disorders of glyoxylate metabolism, including primary hyperoxaluria, that are associated with production of excessive amounts of oxalate.
Enantioselective baeyer-villiger oxidation: Desymmetrization of meso cyclic ketones and kinetic resolution of racemic 2-arylcyclohexanones
Zhou, Lin,Liu, Xiaohua,Ji, Jie,Zhang, Yuheng,Hu, Xiaolei,Lin, Lili,Feng, Xiaoming
, p. 17023 - 17026,4 (2012/12/12)
Catalytic enantioselective Baeyer-Villiger (BV) oxidations of racemic and meso cyclic ketones were achieved in the presence of chiral N,N'-dioxide-Sc III complex catalysts. The BV oxidations of prochiral cyclohexanones and cyclobutanones afforded series of optically active μ- and γ-lactones, respectively, in up to 99% yield and 95% ee. Meanwhile, the kinetic resolution of racemic 2-arylcyclohexanones was also realized via an abnormal BV oxidation. Enantioenriched 3-aryloxepan-2-ones, whose formation is counter to the migratory aptitude, were obtained preferentially. Both the lactones and the unreacted ketones were obtained with high ee values.
Enantioselective baeyer-villiger oxidation: Desymmetrization of meso cyclic ketones and kinetic resolution of racemic 2-arylcyclohexanones
Zhou, Lin,Liu, Xiaohua,Ji, Jie,Zhang, Yuheng,Hu, Xiaolei,Lin, Lili,Feng, Xiaoming
, p. 17023 - 17026 (2013/01/15)
Catalytic enantioselective Baeyer-Villiger (BV) oxidations of racemic and meso cyclic ketones were achieved in the presence of chiral N,N'-dioxide-Sc III complex catalysts. The BV oxidations of prochiral cyclohexanones and cyclobutanones afforded series of optically active μ- and γ-lactones, respectively, in up to 99% yield and 95% ee. Meanwhile, the kinetic resolution of racemic 2-arylcyclohexanones was also realized via an abnormal BV oxidation. Enantioenriched 3-aryloxepan-2-ones, whose formation is counter to the migratory aptitude, were obtained preferentially. Both the lactones and the unreacted ketones were obtained with high ee values.
The catalytic asymmetric Fischer indolization
Mueller, Steffen,Webber, Matthew J.,List, Benjamin
supporting information; experimental part, p. 18534 - 18537 (2012/01/31)
The first catalytic asymmetric Fischer indolization is reported. In the presence of a 5 mol % loading of a novel spirocyclic chiral phosphoric acid, 4-substituted cyclohexanone-derived phenylhydrazones undergo a highly enantioselective indolization. Efficient catalyst turnover was achieved by the addition of a weakly acidic cation exchange resin, which removes the generated ammonia. The reaction can be conducted under mild conditions and gives various 3-substituted tetrahydrocarbazoles in generally high yields.
GUANIDINE DERIVATIVES AND USE THEREOF AS NEUROPEPTIDE FF RECEPTOR ANTAGONISTS
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Page 51, (2010/02/08)
The invention relates to guanidine derivatives of formula (I) where: A = a chain of 3-c6 carbon atoms, one of which can be replaced by -N(R')- or -O- and R' = H or a substituent, where the ring skeleton only contains both double bonds of the thiazole component, the pharmaceutically-acceptable acid addition salts of basic compounds of formula (I), the pharmaceutically-acceptable salts of compounds of formula (I),, comprising acid groups, with bases, the pharmaceutically-acceptable esters of hydroxy or carboxyl group containing compounds of formula (I) and the solvates or hydrates thereof, which are partly known and partly novel and exhibit a neuropeptide FF receptor antagonist effect. The above are suitable for the treatment of pain and hyperalgesia, withdrawal symptoms in alcohol, psychotropic and nicotine dependencies, for improvement or cure of said dependencies, for regulation of insulin excretion, food intake, memory functions, blood pressure, electrolyte and energy management and for treatment of urinary incontinence. The above can be produced using generally used methods and processed to give medicaments.
Piperazinyl-cyclohexanes and cyclohexenes
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, (2008/06/13)
Novel non-dopaminergic antiischemic compounds have Formula I: wherein R=R1 and is independently H, C1-4 alky C1-4 alkoxy, C1-4 trihaloalkyl or halogen, or R and R1 may be taken together to form an -O(CH2)mO- (m=1 or 2); X=a 3-indolyl, phenyl, naphthalenyl or 2-benzothiazolyl residue; n=0, 1, 2 or 3; R2=R3 and is independently H or C1-4 alkyl; and R4=phenyl, 2-thienyl, 2-quinolinyl, 4-pyridinyl or substituted phenyl.
ANTIISCHEMIC PIPERAZINYL- AND PIPERIDINYL-CYCLOHEXANES
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, (2008/06/13)
Certain piperazinyl-and piperidinyl-substituted cyclohexanes have anti-ischemic properties.
1-(4-Aryl-cyclohexyl)piperidine derivatives, method of use thereof and pharmaceutical compositions thereof
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, (2008/06/13)
Novel 1-[1-(4-aryl-cyclohexyl)-4-piperidinyl]-1,3-dihydro-2H-benzimidazol-2-ones and 1-aryl-8-(4-aryl-cyclohexyl)-1,3,8-triazaspiro[4,5]decan-4-ones which are useful as antiemetic-and neuroleptic agents.
