63-75-2Relevant articles and documents
Synthetic method of arecoline
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, (2021/04/26)
The invention discloses a synthetic method of arecoline. The synthetic method comprises the following steps: taking methyl 3-bromopropionate as an initial raw material, sequentially carrying out sodium methoxide claisen ester condensation, methylamine cyclization, sodium borohydride reduction and dehydration under alkaline conditions to obtain arecoline. According to the method, methyl 3-bromopropionate and a methylamine alcohol solution are used as the raw materials so that the problem that methyl iodide or highly toxic dimethyl sulfate with high cost is used in an N-methylation step, and the safety is controlled from the source is avoided.
Preparation method of arecoline
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Paragraph 0021, (2016/10/31)
The invention provides a preparation method of arecoline. On the presence of organic base, reaction raw materials such as nicotinic acid and the like have esterification and alkylation reactions with a compound capable of providing alkyl in the organic solvent, and arecoline can be prepared through a reduction reaction and aftertreatment. Two procedures including esterification and N-methylation are combined, and the process route of preparation of arecoline is shortened. According to the method, the operation conditions are simple, and the intermediate treatment is more convenient; expensive alkyl halide (such as methyl iodide) cannot be used as a reaction raw material, cheaper sulfolipid or phosphate ester compounds are selected, a good implementation effect is also obtained, and the product has a cost advantage.
N-Heteroarylmethyl-5-hydroxy-1,2,5,6-tetrahydropyridine-3-carboxylic acid a novel scaffold for the design of uncompetitive α-glucosidase inhibitors
Long, Sha,Stefani, Francesca Romana,Biondi, Stefano,Ghiselli, Giancarlo,Panunzio, Mauro
, p. 5811 - 5822 (2013/09/12)
Abstract The enzyme α-glucosidase has attracted interest owing to its involvement in the digestive process of carbohydrate, its role in intracellular glycoprotein trafficking, tumorigenesis and viral infection. In this study, several members of a new family of N-heteroarylmethyl substituted azasugars were synthesized and evaluated as α-glucosidase inhibitors. We systematically investigated the effect of different N-substituents as well as the role of hydroxyl and carboxylate moieties on the piperidine ring. The compounds N-heteroarylmethyl-5-hydroxy-1,2,5,6-tetrahydropyridine-3-carboxylic acid emerged as potent α-glucosidase inhibitors. Unlike Acarbose and other clinically relevant α-glucosidase inhibitors, these compounds act through a reversible uncompetitive mechanism of inhibition which make them attractive candidates for drug development.
CYCLIC AMINE AZAHETEROCYCLIC CARBOXAMIDES
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Page/Page column 50, (2012/02/13)
The invention provides novel cyclic amine azaheterocyclic carboxamide according to Formula (I), Formula (II) and Formula (III) their manufacture and use for the treatment of hyperproliferative diseases, such as cancer.
SULFONYLPYRAZOLE AND SULFONYLPYRAZOLINE CARBOXAMIDINE DERIVATIVES AS 5-HT6 ANTAGONISTS
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Page/Page column 36, (2008/06/13)
This invention concerns sulfonylpyrazoline carboxamidine derivatives as antagonists of 5-HT6 receptors, to methods for the preparation of these compounds and to novel intermediates useful for their synthesis. The invention also relates to the uses of such compounds and compositions, particularly their use in administering them to patients to achieve a therapeutic effect in Parkinson's disease, Huntington's chorea, schizophrenia, anxiety, depression, manic depression, psychoses, epilepsy, obsessive compulsive disorders, mood disorders, migraine, Alzheimer's disease, age related cognitive decline, mild cognitive impairment, sleep disorders, eating disorders, anorexia, bulimia, binge eating disorders, panic attacks, akathisia, attention deficit hyperactivity disorder, attention deficit disorder, withdrawal from abuse of cocaine, ethanol, nicotine or benzodiazepines, pain, disorders associated with spinal trauma or head injury, hydrocephalus, functional bowel disorder, Irritable Bowel Syndrome, obesity and type-2 diabetes. The compounds have the general formula (1), wherein the symbols have the meanings given in the description.
Beta-sulfonamide hydroxamic acid inhibitors of tace/matrix metalloproteinase
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Page/Page column 38-39, (2008/06/13)
This invention provides compounds of Formula I, having the structure: that are useful in treating diseases or disorders mediated by TNF-α, such as arthritis (rheumatoid arthritis (RA), juvenile RA, psoriatic arthritis, osteoarthritis etc), tumor metastasis, tissue ulceration, abnormal wound healing, periodontal disease, bone disease, diabetes (insulin resistance) and HIV infection, ankylosing spondylitis, psoriasis, sepsis, multiple sclerosis, Crohn's disease, degenerative cartilage loss, asthma, idiopathic pulmonary fibrosis, vasculitis, systemic lupus erythematosus, irritable bowel syndrome, acute coronary syndrome, hepatitis C, cachexia, COPD, stroke or type 2 diabetes, and for alleviation of symptoms thereof. The invention further provides methods for use of the compounds.
New carbamoylpiperidines as human platelet aggregation inhibitors
Guo, Zhengming,Zheng, Xiaozhang,Thompson, Walter,Dugdale, Marion,Gollamudi, Ram
, p. 1041 - 1058 (2007/10/03)
A series of 3-carbamoylpiperidines (nipecotamides) are designed, synthesized and tested for their inhibitory action against adenosine diphosphate (ADP)-induced aggregation of human platelets. A structure- activity analysis of the bis(nipecotamido)aralkane type showed that a substituent on the piperidine ring should preferably be an amide and that the electronegativity of the carbonyl oxygen and the orientation of the amide group affected activities. Based on the knowledge of factors influencing platelet activation and aggregation, a nitric ester moiety which could release nitric oxide (NO) in situ, is incorporated into the nipecotamide structure. These compounds exhibit increased activity compared to those having no -ONO2 function. They also show stereoselectivity, with the meso isomer being approximately twice as potent as the synthetic diastereomeric mixture. Replacement of the -ONO2 function with hydroxyl, ester or alkyl groups considerably diminishes aggregation-inhibitory potential. Nipecotamides are shown here to inhibit the basal and collagen-induced rise in platelet inositol trisphosphate (IP3) levels, as well as phosphoinositide turnover. A comprehensive mechanism of action is proposed taking earlier results into consideration. (C) 2000 Elsevier Science Ltd.
Preparation and Stereochemistry of Methyl 3-(and 4)-p-Chlorothiophenoxy-1-methylpiperidine-4-(and 3)-carboxylates, and Cyclization to Benzothiopyranopyridinones
Butt, Graeme L.,Deady, Leslie W.,Mackay, Maureen F.
, p. 321 - 326 (2007/10/02)
The title piperidines were prepared by (a) methanolysis of the corresponding nitriles and (b) addition of p-chlorothiophenol to the appropriate tetrahydropyridines.Three esters were obtained with stereochemistry assigned by nmr analysis: 2 , 5 , 6 .Compounds 2 and 6 cyclized in 70percent sulfuric acid.The product structures were established by X-ray crystallography and, suprisingly, both had trans-fused rings.Compound 5, however, did not cyclize but gave 4-(methylthio)chlorobenzene as the sole isolated product.