885693-20-9Relevant academic research and scientific papers
Multigram Synthesis of Heterabicyclo[n.1.0]alkan-1-yl Trifluoroborates
Kleban, Ihor,Krokhmaliuk, Yevhen,Reut, Sofiia,Shuvakin, Serhii,Pendyukh, Vyacheslav V.,Khyzhan, Oleksandr I.,Yarmoliuk, Dmytro S.,Tymtsunik, Andriy V.,Rassukana, Yuliya V.,Grygorenko, Oleksandr O.
, p. 6551 - 6560 (2020/09/17)
An approach to the synthesis of oxa- and azabicyclo[n.1.0]alkan-1-yl trifluoroborates on a multigram scale was developed. Two synthetic strategies were evaluated: the first based on the lithiation–borylation of the corresponding 2-bromoallyl derivatives, and the other relying on regioselective hydroboration of the appropriate hetera-substituted enynes. The second method appeared to be more efficient in terms of scalability and substrate scope. Further steps included ring closing-metathesis, mild palladium-catalyzed cyclopropanation with diazomethane, and reaction with KHF2 and furnished the title compounds in up to 50 g scale in a single run (10–41 % overall yield, 4–5 steps).
gem-Difluorocyclopropanation of Alkenyl Trifluoroborates with the CF3SiMe3–NaI System
Grygorenko, Oleksandr O.,Hryshchuk, Oleksandr V.,Kuchkovska, Yuliya O.,Tymtsunik, Andriy V.,Varenyk, Anatolii O.,Yurov, Yevhen
supporting information, p. 2217 - 2224 (2020/04/29)
Difluorocyclopropanation of alkenyl trifluoroborates using TMSCF3–NaI system was reported for the first time. The developed method allowed preparation of monocyclic, spiro- and fused-bicyclic gem-difluorocyclopropanes bearing additional functio
Preparation method of N-substituted-tetrahydropyridine-3/4-boric acid/ester
-
Paragraph 0041-0043, (2020/04/22)
The invention discloses a preparation method of N-substituted tetrahydropyridine-3/4-boric acid/ester, and belongs to the technical field of organic boric acid chemistry. The method comprises the following steps: carrying out a reaction on pyridine-3/4-boric acid/ester and a halide to form a quaternary salt, and reducing the quaternary salt with sodium/potassium borohydride in an aprotic solvent to generate N-substituted-tetrahydropyridine-3/4-boric acid/ester. According to the method, easily-synthesized pyridine-3/4-boric acid/ester is used as a raw material, the product can be obtained through two continuous steps, and the reaction selectivity is high, so that the defect that palladium-catalyzed coupling or ultralow temperature is needed when substituted piperidone is adopted as a raw material is overcome, the method is verified on the hectogram scale, and a concise and efficient synthesis path is provided for preparation of the compound.
Sodium channel blockers (by machine translation)
-
, (2020/11/05)
The invention belongs to the field of medicines, and particularly relates to a compound shown as a formula (I). A pharmaceutical composition comprising the compound, a pharmaceutically acceptable salt, a solvate or an isomer thereof, a pharmaceutically ac
Triazolo[1,5-a]pyrimidine Phosphodiesterase 2A Inhibitors: Structure and Free-Energy Perturbation-Guided Exploration
Tresadern, Gary,Velter, Ingrid,Trabanco, Andrés A.,Van Den Keybus, Frans,MacDonald, Gregor J.,Somers, Marijke V. F.,Vanhoof, Greet,Leonard, Philip M.,Lamers, Marieke B. A. C.,Van Roosbroeck, Yves E. M.,Buijnsters, Peter J. J. A.
, p. 12887 - 12910 (2020/11/13)
We describe the hit-To-lead exploration of a [1,2,4]triazolo[1,5-A]pyrimidine phosphodiesterase 2A (PDE2A) inhibitor arising from high-Throughput screening. X-ray crystallography enabled structure-guided design, leading to the identification of preferred substructural components. Further rounds of optimization used relative binding free-energy calculations to prioritize different substituents from the large accessible chemical space. The free-energy perturbation (FEP) calculations were performed for 265 putative PDE2A inhibitors, and 100 compounds were synthesized representing a relatively large prospective application providing unexpectedly active molecules with IC50′s from 2340 to 0.89 nM. Lead compound 46 originating from the FEP calculations showed PDE2A inhibition IC50 of 1.3 ± 0.39 nM, a 100-fold selectivity versus other PDE enzymes, clean cytochrome P450 profile, in vivo target occupancy, and promise for further lead optimization.
CHEMOKINE RECEPTOR MODULATORS AND USES THEREOF
-
, (2018/05/03)
Disclosed herein, inter alia, are compounds and methods of use thereof for the modulation of chemokine receptor activity.
ANTI-AMYLOID COMPOUNDS CONTAINING BENZOFURAZAN
-
, (2017/07/14)
In general, among other things, compounds of Formula I are provided: in which R11 is e.g., 4-(pyrrolidin-1-yl)piperidin-1-yl, N-methyl-3-(pyrrolidin-1-yl)propan-1-amino, N1,N1,N3-trimethylpropane-1,3-diamino, N,N-dimethylpiperidin-4-amino, 3-(pyrrolidin-1-ylmethyl)azetidin-1-yl, 3-(pyrrolidin-1-ylmethanon)azetidin-1-yl, or 3-(morpholin-1-ylmethyl)azetidin-1-yl; R13 is, e.g., phenyl optionally substituted with one or more substituents; and R12 and R14 are each independently hydrogen or alkyl. Methods of treatment are also provided.
Method for synthesizing N-substitute-1, 2, 3, 6-tetrahydropyridine-5-boric acid ester
-
Paragraph 0024, (2016/11/07)
The invention discloses a method for synthesizing N-substitute-1, 2, 3, 6-tetrahydropyridine-5-boric acid ester. According to the method, N-substitute-1, 2, 3, 6-tetrahydropyridine-5-carboxylic acid (ester) serves as the raw material, conducts addition with halogen and then is subjected to alkaline condition elimination to form alkenyl halide and then subjected to coupling with al boron ester under the condition of metal palladium catalyzation, and the N-substitute-1, 2, 3, 6-tetrahydropyridine-5-boric acid ester is obtained. According to the method, the obtained midbody alkenyl halide does not contain isomer, separation is easy to conduct, purity of an obtained product is high, and the method provides a simple way for synthesis of compounds of the type.
INHIBITORS OF BRUTON'S TYROSINE KINASE
-
, (2016/01/25)
Disclosed herein are compounds that inhibit Bruton's tyrosine kinase (Btk). Also described are irreversible inhibitors of Btk. In addition, reversible inhibitors of Btk are also described. Also disclosed are pharmaceutical compositions that include the compounds. Methods of using the Btk inhibitors are disclosed, alone or in combination with other therapeutic agents, for the treatment of autoimmune diseases or conditions, heteroimmune diseases or conditions, cancer, including lymphoma, and inflammatory diseases or conditions.
Pyrimidin-4-one derivatives and their use in the treatment, amelioration or prevention of a viral disease
-
, (2013/05/08)
The present invention relates to a compound having the general formula II, optionally in the form of a pharmaceutically acceptable salt, solvate, polymorph, prodrug, tautomer, racemate, enantiomer, or diastereomer or mixture thereof, which is useful in treating, ameloriating or preventing a viral disease. Furthermore, specific combination therapies are disclosed.
