14062-30-7Relevant academic research and scientific papers
Enantioselective Desymmetrization of 2-Aryl-1,3-propanediols by Direct O-Alkylation with a Rationally Designed Chiral Hemiboronic Acid Catalyst That Mitigates Substrate Conformational Poisoning
Estrada, Carl D.,Ang, Hwee Ting,Vetter, Kim-Marie,Ponich, Ashley A.,Hall, Dennis G.
supporting information, (2021/04/07)
Enantioselective desymmetrization by direct monofunctionalization of prochiral diols is a powerful strategy to prepare valuable synthetic intermediates in high optical purity. Boron acids can activate diols toward nucleophilic additions; however, the design of stable chiral catalysts remains a challenge and highlights the need to identify new chemotypes for this purpose. Herein, the discovery and optimization of a bench-stable chiral 9-hydroxy-9,10-boroxarophenanthrene catalyst is described and applied in the highly enantioselective desymmetrization of 2-aryl-1,3-diols using benzylic electrophiles under operationally simple, ambient conditions. Nucleophilic activation and discrimination of the enantiotopic hydroxy groups on the diol substrate occurs via a defined chairlike six-membered anionic complex with the hemiboronic heterocycle. The optimal binaphthyl-based catalyst 1g features a large aryloxytrityl group to effectively shield one of the two prochiral hydroxy groups on the diol complex, whereas a strategically placed "methyl blocker"on the boroxarophenanthrene unit mitigates the deleterious effect of a competing conformation of the complexed diol that compromised the overall efficiency of the desymmetrization process. This methodology affords monoalkylated products in enantiomeric ratios equal or over 95:5 for a wide range of 1,3-propanediols with various 2-aryl/heteroaryl groups.
OXIDATIVE COUPLING OF ARYL BORON REAGENTS WITH SP3-CARBON NUCLEOPHILES, AND AMBIENT DECARBOXYLATIVE ARYLATION OF MALONATE HALF-ESTERS VIA OXIDATIVE CATALYSIS
-
Paragraph 0478; 0512, (2018/07/29)
Described herein are methods of oxidative coupling of aryl boron reagents with sp3-carbon nucleophiles, and ambient decarboxylative arylation of malonate half-esters via oxidative catalysis.
Ambient Decarboxylative Arylation of Malonate Half-Esters via Oxidative Catalysis
Moon, Patrick J.,Yin, Shengkang,Lundgren, Rylan J.
supporting information, p. 13826 - 13829 (2016/11/06)
We report decarboxylative carbonyl α-arylation by coupling of arylboron nucleophiles with malonic acid derivatives. This process is enabled by the merger of aerobic oxidative Cu catalysis with decarboxylative enolate interception reminiscent of malonyl-CoA reactivity in polyketide biosynthesis. This method enables the synthesis of monoaryl acetate derivatives containing electrophilic functional groups that are incompatible with existing α-arylation reactivity paradigms. The utility of the reaction is demonstrated in drug intermediate synthesis and late-stage functionalization.
SUBSTITUTED AROMATIC COMPOUNDS AND PHARMACEUTICAL COMPOSITIONS FOR THE PREVENTION AND TREATMENT OF OSTEOPOROSIS
-
Paragraph 0099; 00100, (2016/05/02)
The present invention concerns the use of compounds for preventing and/or treating osteoporosis, for stimulating bone formation, for stimulating bone remodeling, for stimulating the differentiation and mineralization of osteoblasts, for inhibiting bone resorption and for modulating serum level of adiponectin in a subject. These uses have been found for compounds represented by Formula I and pharmaceutically acceptable salts thereof. wherein A is C5 alkyl, C6 alkyl, C5 alkenyl, C6 alkenyl, C(O)-(CH2)n-CH3 or CH(OH)-(CH2)n-CH3 wherein n is 3 or 4; R1 is H, F or OH; R2 is H, F, OH, C6 alkyl, C5 alkenyl, C6 alkenyl, C(O)-(CH2)n-CH3 or CH(OH)-(CH2)n-CH3 wherein n is 3 or 4; R3 is H, F, OH or CH2Ph; R4 is H, F, or OH; Q is 1) (CH2)mC(O)OH wherein m is 1 or 2, 2) CH(F)-C(O)OH, 3) CF2-C(O)OH or 4) C(O)-C(O)OH.
SUBSTITUTED AROMATIC COMPOUNDS AND PHARMACEUTICAL COMPOSITIONS FOR TISSUE SELF-REPAIR AND REGENERATION
-
Paragraph 0094, (2016/06/13)
Described herein are compounds of Formula I, or pharmaceutically acceptable salts thereof, or combinations thereof, as well as uses thereof. Such uses include promoting tissue self-repair or tissue regeneration of an organ, stimulating the generation of tissue growth, modulating (e.g. increasing) the level of a tissue-repair marker, treating physical injury in an organ, tissue, or cell, promoting wound healing as well as anti-aging applications. Corresponding compositions, methods and uses are also described. Formula I wherein A is C5 alkyl, C6 alkyl, C5 alkenyl, C6 alkenyl, C(0)-(CH2)n-CH3 or CH(OH)-(CH2)n-CH3 wherein n is 3 or 4; R1 is H, F of OH; R2 is H, F, OH, C5 alkyl, C6 alkyl, C5 alkenyl, C6 alkenyl, C(0)-(CH2)n-CH3 or CH(OH)-(CH2)n-CH3 wherein n is 3 or 4; R3 is H, F, OH, or CH2Ph; R4 is H, F or OH; Q is 1) (CH2),C(0)OH wherein m is 1 or 2 2) CH(CH3)C(0)OH, 3) C(CH3)2C(0)OH, 4) CH(F)-C(0)OH, 5) CF2-C(0)OH or 6) C(0)-C(0)OH.
HETEROCYCLIC INHIBITORS OF THE SODIUM CHANNEL
-
Page/Page column 77, (2015/09/28)
The invention relates to compounds useful in treating conditions associated with voltage-gated ion channel function, particularly conditions associated with sodium channel activity. More specifically, the invention concerns heterocyclic compounds (e.g., compounds according to any of Formulas (l)-(ll l) or Compounds (1 )-(65) of Table 1 ) that are that are useful in treatment of conditions such as epilepsy, cancer, pain, migraine, Parkinson's Disease, mood disorders, schizophrenia, psychosis, tinnitus, amyotropic lateral sclerosis, glaucoma, ischaemia, spasticity disorders, obsessive compulsive disorder, restless leg syndrome and Tourette syndrome.
Synthesis of α-aryl esters and nitriles: Deaminative coupling of α-aminoesters and α-aminoacetonitriles with arylboronic acids
Wu, Guojiao,Deng, Yifan,Wu, Chaoqiang,Zhang, Yan,Wang, Jianbo
supporting information, p. 10510 - 10514 (2016/02/18)
Transition-metal-free synthesis of α-aryl esters and nitriles using arylboronic acids with α-aminoesters and α-aminoacetonitriles, respectively, as the starting materials has been developed. The reaction represents a rare case of converting C(sp3)-N bonds into C(sp3)-C(sp2) bonds. The reaction conditions are mild, demonstrate good functional-group tolerance, and can be scaled up. Touch base: A transition-metal-free protocol for the synthesis of α-aryl esters and nitriles by deaminative coupling is presented. Strong bases and transition-metal catalysts are not needed. The new synthetic method uses readily available starting materials and demonstrates wide substrate scope.
SUBSTITUTED PYRIMIDINES
-
Page/Page column 99, (2013/04/10)
The present invention relates to substituted pyrimidines useful as HIF prolyl hydroxylase inhibitors to treat anemia and like conditions.
Substituted phenylimidazopyrazoles and their use
-
Paragraph 1328; 1329; 1330, (2013/07/31)
The present application relates to novel 1-phenyl-1H-imidazo[1,2-b]pyrazole derivatives, to processes for their preparation, to their use for the treatment and/or prevention of diseases and to their use for preparing medicaments for the treatment and/or prevention of diseases, in particular angiogenic disorders and hyperproliferative disorders, where neovascularization plays a role, such as, for example, neoplastic disorders and tumour disorders. Such treatments can be carried out as monotherapy or else in combination with other medicaments or further therapeutic measures.
SUBSTITUTED PYRIMIDINES
-
Page/Page column 99, (2013/04/10)
Disclosed are substituted pyrimidines useful as HIF prolyl hydroxylase inhibitors to treat anemia and like conditions.
