7340-23-0

Upstream product

• 1121-60-4 pyridine-2-carbaldehyde 
• 141-78-6 ethyl acetate 
• 1099-45-2 ethyl (triphenylphosphoranylidene)acetate 
• 64-17-5 ethanol 
• 109-09-1 2-chloropyridine 
• 140-88-5 ethyl acrylate 
• 109-04-6 2-bromo-pyridine 
• 867-13-0 diethoxyphosphoryl-acetic acid ethyl ester 
• 90922-50-2 (E)-ethyl 3-(N-oxypyridin-2-yl)acrylate 
• 110-86-1 pyridine 
• 623-47-2 propynoic acid ethyl ester 
• 26930-67-6 N-(pyrid-2-ylmethylene)-p-methoxyphenylamine 
• 24045-02-1 (benzothiazole-2-sulfonyl)-acetic acid ethyl ester 
• 2524-52-9 ethyl-2-picolinate 

Downstream Products

• 637012-61-4 ethyl 3-benzylamino-3-(2-pyridyl)propanoate 

Relevant academic research and scientific papers

A One-Pot Synthesis of α,β-Unsaturated Esters From Esters

A convenient method for reductive Horner–Wadsworth–Emmons (HWE) olefination is described. The E-selective HWE homologation of various esters to α,β-unsaturated esters was readily achieved and gave the desired products in good-to-moderate yields under mild conditions. The one-pot reaction proceeds through an in situ generated aldehyde, formed via the partial reduction of an ester with lithium diisobutyl-t-butoxyaluminum hydride. The formation of cyclized metal acetal and subsequent decompose to the aldehyde for the olefination was found to be a crucial step in this C2-carbon homologation protocol.

(E)-3-heteroaromatic propyl-2-enoic acid derivative as well as preparation and application thereof

The invention relates to a (E)-3-heteroaromatic propyl-2-enoic acid derivative, and also relates to a preparation method and pharmaceutical application thereof. The compound is a novel Nrf2 activatorand has the effects of resisting oxidative stress, resisting neuritis and enhancing mitochondrial functions and biogenesis by effectively activating an Nrf2 signal path, so that nerve cells are protected, and the compound can be used for treating neurodegenerative diseases and cerebral apoplexy. In addition, the novel Nrf2 activator can also be used to treat autoimmune diseases, diabetes and nephropathy, and other chronic diseases.

Gold-catalyzed partial hydrogenation of activated alkynes mediated by triphenylphosphine

Gold(I) can exhibit a cooperative effect with triphenylphosphine, accelerating the triphenylphosphine-mediated partial hydrogenation of activated alkynes. In this protocol, 3-arylpropiolates are selectively reduced to the Z -isomer when the aryl ring bears an electron-donor substituent, whereas 3-arylpropynones are reduced to the E-isomers.

Bioactivity and structure–activity relationship of cinnamic acid derivatives and its heteroaromatic ring analogues as potential high-efficient acaricides against Psoroptes cuniculi

A series of cinnamic acid derivatives and its heteroaromatic ring analogues were synthesized and evaluated for acaricidal activity in vitro against Psoroptes cuniculi, a mange mite. Among them, eight compounds showed the higher activity with median lethal concentrations (LC50) of 0.36–1.07 mM (60.4–192.1 μg/mL) and great potential for the development of novel acaricidal agent. Compound 40 showed both the lowest LC50 value of 0.36 mM (60.4 μg/mL) and the smallest median lethal time (LT50) of 2.6 h at 4.5 mM, comparable with ivermectin [LC50 = 0.28 mM (247.4 μg/mL), LT50 = 8.9 h], an acaricidal drug standard. SAR analysis showed that the carbonyl group is crucial for the activity. The type and chain length of the alkoxy in the ester moiety and the steric hindrance near the ester group significantly influence the activity. The esters were more active than the corresponding thiol esters, amides, ketones or acids. Replacement of the phenyl group of cinnamic esters with α-pyridyl or α-furanyl significantly increase the activity. Thus, a series of cinnamic esters and its heteroaromatic ring analogues with excellent acaricidal activity emerged.

One-Pot Synthesis of α,β-Unsaturated Esters, Ketones, and Nitriles from Alcohols and Phosphonium Salts

A general method for the synthesis of α,β-unsaturated esters, ketones, and nitriles is successfully achieved by a one-pot copper-catalyzed oxidation with O 2 in air as oxidant. The solvent mixture of acetonitrile and formamide (1:1) is optimized to ensure the oxidation of alcohols, deprotonation of phosphonium salt, and Wittig reaction occur efficiently in one pot. A broad range of substrates has been explored for this process, including three electron-withdrawing group (CO 2 Et, COPh, CN) functionalized phosphonium salts. They reacted not only with benzylic and heteroaromatic alcohols, but also with aliphatic alcohols, forming the corresponding α,β-unsaturated esters, ketones, and nitriles in moderate to excellent yields.

Facile synthesis of α, β-unsaturated esters through a one-pot copper-catalyzed aerobic oxidation-Wittig reaction

An efficient one-pot synthesis of α, β-unsaturated esters through the aerobic oxidation – Wittig tandem reaction of alcohols and phosphorous ylide is developed. This new method operates under mild reaction conditions, and uses CuI/TEMPO (TEMPO = 2,2,6,6-tetramethylpiperidine-N-oxyl) as co-catalyst and air (O2) as the oxidant. It tolerates a wide range of functionalized benzylic alcohol and aliphatic alcohols.

5,6-dihydropyrrolo[2,1-a]isoquinolines as alternative of new drugs with cytotoxic activity

In this study, the pyrrolo[2,1-a]isoquinolines 4a–n were synthesized in good yields in a three steps synthesis from the corresponding α,β-unsaturated esters starting materials. These compounds were tested on six human cancer cells lines to measure the cyt

Gold-Catalyzed [2,3]-Sigmatropic Rearrangement: Reaction of Aryl Allyl Alcohols with Diazo Compounds

A gold-catalyzed [2,3]-sigmatropic rearrangement reaction has been developed. The intermolecular rearrangement occurs between in situ generated donor-acceptor gold-carbenes and cinnamyl alcohols via tandem oxonium ylide formation. The desired rearranged product has been accomplished selectively over more conventional O-H insertion, cyclopropanation, cycloaddition, and C-H functionalization products under mild, open-air conditions. The scope of the work has been illustrated by synthesizing a new class of substrates that can be used for constructing complex molecular targets.

Synthesis and evaluation of N-heteroaromatic ring-based analogs of piperlongumine as potent anticancer agents

Piperlongumine (PL) selectively targets a wide spectrum of cancer cells and induces their death by triggering various pathways, including apoptosis, necrosis and autophagy. However, the poor solubility is a serious concern for intensive study and clinical application. We synthesized its analogs 1–9 by replacement of the trimethoxyphenyl of PL with an N-heteroaromatic ring and/or not introduction of 2-Cl. These compounds improved aqueous solubility and displayed potent anticancer activity. The most active compound 9 selectively enhanced ROS levels in colon cancer cells and inhibited the cell proliferation but sparing non-tumor colon cells. Importantly, 9 significantly repressed tumor growth in an HCT-116 xenograft mouse model, suggesting that these N-heteroaromatic ring-based analogs of PL warrant further investigation.

SPIROCYCLIC COMPOUNDS AS AGONISTS OF THE MUSCARINIC M1 RECEPTOR AND/OR M4 RECEPTOR

This invention relates to compounds that are agonists of the muscarinic M1 and/or M4 receptor and which are useful in the treatment of muscarinic M1/M4 receptor mediated diseases. Also provided are pharmaceutical compositions containing the compounds and the therapeutic uses of the compounds. Compounds provided are of formula. (I) where p, q, r, s, X, Z, Y, R1, R2, R3and R4 are as defined herein.