37543-75-2

Upstream product

• 826-81-3 2-methyl-8-quinolinol 
• 100-52-7 benzaldehyde 
• 100-42-5 styrene 
• 1127-45-3 8-Hydroxyquinoline-N-oxide 
• 148-24-3 8-quinolinol 

Relevant academic research and scientific papers

Waste-minimized synthesis of C2 functionalized quinolines exploiting iron-catalysed C-H activation

Herein we present an efficient and regioselective iron-catalyzed methodology for the external oxidant-free functionalization of quinoline-N-oxides. The protocol, based on the use of inexpensive and easily accessible FeSO4, showed broad applicability to a wide range of substrates. An additional green feature of this synthetic methodology is H2O being the only by-product. Experimental and computational investigations provide support to a mechanism based on a facile C-H activation event. The green efficiency of the process has also been carefully assessed using: (i) metrics related to the synthetic process (AE, Yield, 1/SF, MRP and RME); (ii) safety/hazard metrics (SHZI and SHI); and (iii) metrics related to the metal used as the catalyst (Abundance, OEL and ADP). In addition to the many advantages of this protocol related to the green iron catalyst used and the safety/hazard features of the process, an E-factor value of ca. 0.92 (84 to >99% reduction compared to known protocols) evidently confirms the sustainable efficiency of the procedure presented. Practical utility has also been demonstrated by performing the reaction efficiently on a multi-gram scale. This journal is

Iodine-Catalyzed Direct C-H Alkenylation of Azaheterocycle N-Oxides with Alkenes

An efficient and regioselective alkenylation of azaheterocycle N-oxides with alkenes catalyzed by iodine under metal- and external oxidant-free reaction conditions has been developed. A variety of (E)-2-styrylazaheterocycles have been produced in moderate

Synthesis and antiproliferative evaluations of certain 2-phenylvinylquinoline (2-styrylquinoline) and 2-furanylvinylquinoline derivatives

The present study describes the synthesis of 2-phenylvinylquinoline (styrylquinoline) and 2-furanylvinylquinoline derivatives and evaluation for their antiproliferative activities. (E)-2-Styrylquinolin-8-ol (14a) was inactive against a 3-cell line panel consisting of MCF-7 (Breast), NCI-H460 (Lung), and SF-268 (CNS). Replacement of the phenyl ring with 5-nitrofuran-2-yl group significantly enhanced antiproliferative activity in which (E)-2-(2-(5-nitrofuran-2-yl)vinyl)quinolin-8-ol (14i) and its 4-substituted derivatives 15-19 exhibited strong inhibitory effects against the growth of all three cancer cells. These compounds were further evaluated for their IC50 against the growth of MCF-7, LNCaP, and PC3. Results indicated that a hydrogen bond donating oxime derivative 19a was more active than its hydrogen bond accepting methyloxime derivative 19b. For the inhibition of LNCaP, the potency decreased in an order 14i > 19a > 19b > 15 > 18 > 16. Compound 14i is the most active with an IC50 value of 0.35 and 0.14 μM, respectively, against the growth of LNCaP and PC3 cancer cells. Therefore, compound 14i was evaluated by flow cytometric analysis for its effects on cell cycle distributions. Results indicated that 14i effectively induced cell cycle arrest at S phase for both cell lines, which consequently trigger late apoptosis for both LNCaP and PC3 cells.

Analogues of the styrylquinoline and styrylquinazoline HIV-1 integrase inhibitors: design and synthetic problems.

In our work, leading to new styrylquinoline and styrylquinazoline inhibitors of HIV integrase, we analyzed virtual combinatorial library that includes these compounds. Using this method we were able to find interesting synthetic targets. We optimized synthetic procedure yielding such compounds and obtained a couple of new analogues. Their activity will be evaluated in the near future.

8-hydroxy-7-substituted quinolines as anti-viral agents

The present invention provides for 8-hydroxy-7-substituted quinoline compounds such as formula III These compounds are useful as anti-viral agents. Specifically, these compounds have anti-viral activity against the herpes virus, cytomegalovirus (CMV). Many of these compounds are also active against other herpes viruses, such as the varicella zoster virus, the Epstein-Barr virus, the herpes simplex virus and the human herpes virus type 8 (HHV-8).

Styrylquinoline derivatives: A new class of potent HIV-1 integrase inhibitors that block HIV-1 replication in CEM cells

On the basis of the fact that several polynucleotidyl transferases, related to HIV integrase, contain in their active site two divalent metal cations, separated by ca. 4 ?, new potential HIV integrase inhibitors were designed, in which a quinoline substructure is linked to an aryl nucleus possessing various hydroxy substitution patterns, by means of an ethylenic spacer. Although the most active compounds contain the catechol structure, this group is not essential for the activity, since compound 21 that lacks such a moiety is a potent drug, implicating the presence of a different pharmacophore. The most promising styrylquinolines thus synthesized inhibit HIV-1 integrase in vitro at micromolar or submicromolar concentrations and block HIV replication in CEM cells, with no significant cellular toxicity in a 5-day period assay. These inhibitors are active against integrase core domain-mediated disintegration, suggesting that fragment 50-212 is their actual target. These new styrylquinolines may provide lead compounds for the development of novel antiretroviral agents for AIDS therapeutics, based upon inhibition of HIV integrase. They might also be used in the elucidation of the mechanism of inhibition of this enzyme; e.g., they could serve as candidates for cocrystallization studies with HIV integrase.

Synthesis of 8-hydroxyquinolines by the cyclization of m-hydroxyphenethyl ketone O-2,4-dinitrophenyloximes

8-Hydroxyquinolines are synthesized from O-2,4-dinitrophenyloximes of m-hydroxyphenethyl ketones by the treatment with sodium hydride, and then with 2,3-dichloro4,5-dicyano-p-benzoquinone (DDQ).