142355-83-7Relevant articles and documents
A method for one-step synthesis of carboxylic acids with two extended carbon chains from olefins
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Paragraph 0092-0093, (2020/10/12)
The invention relates to a method for one-step synthesis of carboxylic acid with two extended carbon chains from olefin, which comprises the following steps: under the protection of inert gas, sequentially adding an olefin substrate, a photocatalyst, a hydrogen atom transfer reagent, alpha-haloacetic acid, a reducing agent, a solvent and protonic acid into a reactor, and reacting at normal temperature under the irradiation of 25W blue light to obtain a reaction product; diluting, alkalizing, washing, acidifying and extracting the reaction product to obtain an organic phase; and finally, carrying out reduced pressure distillation and column chromatography on the organic phase to obtain a carboxylic acid product with two extended carbon chains; or carrying out reduced pressure distillation and column chromatography on the reaction product to obtain a carboxylic acid product with two extended carbon chains. The invention is simple to operate, direct synthesis conditions are mild, mutual conversion among various functional groups in the traditional carboxylic acid compound synthesis process is avoided, and the atom and step economy of the reaction is improved. Meanwhile, the method disclosed by the invention can also be applied to the simplified synthesis of the medicines cinacarbazide and tirofiban.
PIPERIDINE DERIVATIVES FOR USE IN THE TREATMENT OF PANCREATIC CANCER
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Page/Page column 21; 22; 60, (2018/03/01)
The present invention relates to novel piperidine derivatives having better cell growth inhibitory activities toward cancer cell cultures and, more particularly, PANC-1 cancer cell cultures than FK866. Accordingly, the present invention relates to compoun
Buspirone derivative and pharmacy composition comprising the same
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Paragraph 0101-0104, (2017/01/02)
The present invention relates to a buspirone derivative and a pharmaceutical composition containing the same and, more specifically, to a novel buspirone derivative and a pharmaceutical composition for treating or preventing hypertension. The buspirone derivative according to the present invention corresponds to a novel derivative of buspirone wherein buspirone have already been known to be effective in the treatment of stress-induced diseases and the novel derivative is effective in the treatment of other diseases. Also, the pharmaceutical composition for treating and preventing blood pressure disorders according to the present invention can treat or prevent blood pressure disorders such as hypertension by using the buspirone derivative to newly widen the use range of buspirone. Particularly, the buspirone derivative enables buspirone, which has been used to treat only stress-induced diseases, to be used for a new purpose of treating hypertension. Also, the present invention has an effect of treating or preventing hypertension as the cause of essential hypertension or primary hypertension is examined closely instead of artificially lowering blood pressure.
Metallaphotoredox-catalysed sp3-sp3 cross-coupling of carboxylic acids with alkyl halides
Johnston, Craig P.,Smith, Russell T.,Allmendinger, Simon,MacMillan, David W. C.
, p. 322 - 325 (2016/08/30)
In the past 50 years, cross-coupling reactions mediated by transition metals have changed the way in which complex organic molecules are synthesized. The predictable and chemoselective nature of these transformations has led to their widespread adoption across many areas of chemical research. However, the construction of a bond between two sp3-hybridized carbon atoms, a fundamental unit of organic chemistry, remains an important yet elusive objective for engineering cross-coupling reactions. In comparison to related procedures with sp2-hybridized species, the development of methods for sp3-sp3 bond formation via transition metal catalysis has been hampered historically by deleterious side-reactions, such as β-hydride elimination with palladium catalysis or the reluctance of alkyl halides to undergo oxidative addition. To address this issue, nickel-catalysed cross-coupling processes can be used to form sp3-sp3 bonds that utilize organometallic nucleophiles and alkyl electrophiles. In particular, the coupling of alkyl halides with pre-generated organozinc, Grignard and organoborane species has been used to furnish diverse molecular structures. However, the manipulations required to produce these activated structures is inefficient, leading to poor step-and atom-economies. Moreover, the operational difficulties associated with making and using these reactive coupling partners, and preserving them through a synthetic sequence, has hindered their widespread adoption. A generically useful sp3-sp3 coupling technology that uses bench-stable, native organic functional groups, without the need for pre-functionalization or substrate derivatization, would therefore be valuable. Here we demonstrate that the synergistic merger of photoredox and nickel catalysis enables the direct formation of sp3-sp3 bonds using only simple carboxylic acids and alkyl halides as the nucleophilic and electrophilic coupling partners, respectively. This metallaphotoredox protocol is suitable for many primary and secondary carboxylic acids. The merit of this coupling strategy is illustrated by the synthesis of the pharmaceutical tirofiban in four steps from commercially available starting materials.
Synthesis and biological evaluation of PEG-tirofiban conjugates
Desaubry, Laurent,Riche, Stephanie,Laeuffer, Patricia,Cazenave, Jean-Pierre
, p. 2028 - 2031 (2008/09/21)
We have conjugated tirofiban, an antagonist of the GPIIb/IIIa integrin receptor, to PEG, and shown that these polymers effectively inhibit platelet aggregation. This inhibition decreased with the size of the polymer. Our goal was to develop new cryoprotec
Structure-activity relationship studies of the chromosome segregation inhibitor, Incentrom A
Lee, Hee-Yoon,Jung, Yongsik,Kim, Wonyeob,Kim, Jin Hee,Suh, Min-Soo,Shin, Seung Koo,Yoon, Hye-Joo
scheme or table, p. 4670 - 4674 (2009/04/08)
A series of Incentrom A analogs that inhibit the chromosome segregation process in yeast were synthesized and tested for their effects on chromosome stability and cell proliferation. Pharmacophore and structure-activity relationship of Incentrom A for the anti-yeast activity were established.
Synthesis of cyclic prodrugs of Aggrastat and its analogue with a modified phenylpropionic acid linker
Song, Xiaoping,He, Henry T.,Siahaan, Teruna J.
, p. 549 - 552 (2007/10/03)
(formula presented) 1a, n=2; 1b, n=1 The objective of this work was to synthesize cyclic prodrugs 1a and 1b from Aggrastat 2a and its analogue 2b, respectively, to improve their membrane permeation. Cyclic prodrugs 1a and 1b were formed using an ester bond between the -COOH group of Aggrastat or its analogue and the phenylpropionic acid linker 3 and an amide bond between the piperidinylamine and the -COOH group of the linker 3, respectively, as outlined in Scheme 4.
Use of pyridyl alkane, pyridyl alkene and/or pyridyl alkine acid amides in the treatment of tumors or for immunosuppression
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, (2008/06/13)
The invention relates to the use of pharmacologically valuable pyridyl alkane, pyridyl alkene and/or pyridyl alkine acid amides according to general formula (I) in the treatment of tumors or for immunosuppression.
Pyrrolidine modulators of chemokine receptor activity
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, (2008/06/13)
The present invention is directed to pyrrolidine compounds of the formula 1: (wherein R1, R2, R3, R4, R5, R6and n are defined herein) which are useful as modulators of chemokine receptor activity. In particular, these compounds are useful as modulators of the chemokine receptors CCR-5 and/or CCR-3.
Non-Peptide Fibrinogen Receptor Antagonists. 2. Optimization of a Tyrosine Template as a Mimic for Arg-Gly-Asp
Egbertson, Melissa S.,Chang, Charles T.-C.,Duggan, Mark E.,Gould, Robert J.,Halczenko, Wasyl,et al.
, p. 2537 - 2551 (2007/10/02)
Inhibitors of platelet-fibrinogen binding offer an opportunity to interrupt the final, common pathway for platelet aggregation.Small molecule inhibitors of the platelet fibrinogen receptor GPIIb/IIIa were prepared and evaluated for their ability to prevent platelet aggregation.Compound 23m (L-700, 462/MK-383) inhibited in vitro platelet aggregation with an IC50 of 9 nM and demonstrated a selectivity of >24000-fold between platelet and human umbilical vein endothelial cell fibrinogen receptors.Dose-dependent inhibition of ex vivo platelet aggregation induced by ADP was achieved with iv infusions 0.1-10 μg/kg/min of 23m in anesthetized dogs, with 10 μg/kg/min completely inhibiting platelet aggregation during the entire 6 h infusion protocol.Platelet aggregatability returned rapidly after the termination of the 23m infusions.These features suggest that 23m may be useful in the treatment of arterial occlusive disorders.