Alcohols-buliding-blocks

Name: 2,6-PyridinedimethanolIn 2021 ,《Synthetic platform for mono-functionalised tridentate macrocycles as key precursors of mechanically-linked macromolecular systems》 appeared in Organic Chemistry Frontiers. The author of the article were Sharma, Atul Kumar; Malineni, Jagadeesh; Box, Simon; Ghiassinejad, Sina; van Ruymbeke, Evelyne; Fustin, Charles-Andre. The article conveys some information:

We report here a synthetic platform toward mono-functionalized tridentate macrocycles based on a pyridine-2,6-bis-carboxamide motif. These macrocycles bear a variety of functional groups at the fourth position of the pyridine, giving access to a wide range of synthetic methods for further derivatization or preparation of more complex structures such as mech. interlocked mols. or polymer materials. To illustrate the potential of this family of macrocycles a series of square planar palladium complex-based pseudorotaxanes, containing different axles and functional groups on the ring, are synthesized, and then used to prepare a macro-pseudorotaxane, i.e. a polymer containing a rotaxane junction, and mech.-linked gels by a one-pot and a polyrotaxane approach. The experimental part of the paper was very detailed, including the reaction process of 2,6-Pyridinedimethanol(cas: 1195-59-1Name: 2,6-Pyridinedimethanol)

2,6-Pyridinedimethanol(cas: 1195-59-1) belongs to pyridine. The basicity and metallophilic high donor number of these π-deficient systems has long favored them as ligands in metal catalysis. The last decade saw pyridine assume a stronger role as functional group for directed C–H oxidation/activation.Name: 2,6-Pyridinedimethanol

Referemce:
Alcohol – Wikipedia,
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COA of Formula: C6H13NOIn 2019 ,《An exploration of solvent-front region high affinity moiety leading to novel potent ALK & ROS1 dual inhibitors with mutant-combating effects》 appeared in Bioorganic & Medicinal Chemistry. The author of the article were Lei, Hongrui; Jia, Fang; Cao, Meng; Wang, Jie; Guo, Ming; Zhu, Minglin; Zuo, Daiying; Zhai, Xin. The article conveys some information:

The pyrimidine-2,4-diamine analogs exerted excellent activities in down-regulation of ALK phosphorylation. However, the prevalent drug-resistant site-mutation has gradually prevented the agents from being widely used. Herein, we conducted an exploration of high affinity moiety that bound to the solvent-front region (G1202R located) within the ATP binding site of ALK leading to the synthesis of thirty-five pyrimidine-2,4-diamine derivatives Among these compounds, urea group was extensively derivatized which finally resulted in the identification of the ‘semi-free urea’ compound 39. All compounds were assayed cytotoxicity and enzymic activities and 39 turned out to be the most potent one with IC50 values of 2.1, 0.91, 4.3 and 0.73 nM towards ALKwt, ALKL1196M, ALKG1202R and ROS1, resp. The performances of 39 on ALK- & ROS1-dependent cell lines were in good accordance with enzymic activities with IC50 values below 0.06μM. Besides, 39 induced cell apoptosis in a dose-dependent manner in H2228 cells. Finally, the binding models of 39 with ALKwt, ROS1, ALKL1196M and ALKG1202R were ideally established which further clearly elucidated their mode of action within the active site. In the experimental materials used by the author, we found trans-4-Aminocyclohexanol(cas: 27489-62-9COA of Formula: C6H13NO)

trans-4-Aminocyclohexanol(cas: 27489-62-9) belongs to anime. Primary amines having a tertiary alkyl group (R3CNH2) are difficult to prepare with most methods but are made industrially by the Ritter reaction. In this method a tertiary alcohol reacts with hydrogen cyanide (HCN) in the presence of a concentrated strong acid; a formamide, RNH―CHO, is formed first, which then undergoes hydrolysis.COA of Formula: C6H13NO

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Recommanded Product: (1S,2R)-1-Amino-2,3-dihydro-1H-inden-2-olIn 2020 ,《Catalyst-Controlled Regioselective Chlorination of Phenols and Anilines through a Lewis Basic Selenoether Catalyst》 appeared in Journal of Organic Chemistry. The author of the article were Dinh, Andrew N.; Maddox, Sean M.; Vaidya, Sagar D.; Saputra, Mirza A.; Nalbandian, Christopher J.; Gustafson, Jeffrey L.. The article conveys some information:

We report a highly efficient ortho-selective electrophilic chlorination of phenols utilizing a Lewis basic selenoether catalyst. The selenoether catalyst resulted in comparable selectivities to our previously reported bis-thiourea ortho-selective catalyst, with a catalyst loading as low as 1%. The new catalytic system also allowed us to extend this chem. to obtain excellent ortho-selectivities for unprotected anilines. The selectivities of this reaction are up to >20:1 ortho/para, while the innate selectivities for phenols and anilines are approx. 1:4 ortho/para. A series of preliminary studies revealed that the substrates require a hydrogen-bonding moiety for selectivity. The experimental part of the paper was very detailed, including the reaction process of (1S,2R)-1-Amino-2,3-dihydro-1H-inden-2-ol(cas: 126456-43-7Recommanded Product: (1S,2R)-1-Amino-2,3-dihydro-1H-inden-2-ol)

(1S,2R)-1-Amino-2,3-dihydro-1H-inden-2-ol(cas: 126456-43-7) belongs to anime. Amines can be classified according to the nature and number of substituents on nitrogen. Aliphatic amines contain only H and alkyl substituents. Aromatic amines have the nitrogen atom connected to an aromatic ring.Important amines include amino acids, biogenic amines, trimethylamine, and aniline. Inorganic derivatives of ammonia are also called amines, such as monochloramine (NClH2).Recommanded Product: (1S,2R)-1-Amino-2,3-dihydro-1H-inden-2-ol

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Alcohol – Wikipedia,
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Recommanded Product: 3,5-DihydroxybenzaldehydeIn 2018 ,《Synthetic resveratrol-curcumin hybrid derivative inhibits mitosis progression in estrogen positive MCF-7 breast cancer cells》 appeared in Toxicology In Vitro. The author of the article were Silva, Matheus de Freitas; Coelho, Leticia Ferreira; Guirelli, Isadora Mitestainer; Pereira, Rodrigo Machado; Ferreira-Silva, Guilherme Alvaro; Graravelli, Graciana Y.; Horvath, Renato de Oliveira; Caixeta, Ester Siqueira; Ionta, Marisa; Viegas, Claudio. The article conveys some information:

Curcumin (1) and resveratrol (2) are bioactive natural compounds that display wide pharmacol. properties, including antitumor activity. However, their clin. application has been limited due to their low solubility and bioavailability. Nevertheless, independent studies have considered these compounds as interesting prototypes for developing new chem. structures useful for anticancer therapy. Herein, we report the synthesis of novel curcumin-like hydrazide analogs (3a and 3b), and a series of curcumin-resveratrol hybrid compounds (4a-f), and the evaluation of their cytotoxic potential on three tumor cell lines MCF-7 (breast), A549 (lung), and HepG2 (liver). Cell viability was significantly reduced in all tested cell lines when compounds 4c-4e were used. The IC50 values for these compounds on MCF-7 cells were lower than those for curcumin, resveratrol, or curcumin combined with resveratrol. We evidenced that 4c promoted a drastic increase of G2/M population. The accumulation of cells in mitosis onset in treated cultures was due to, at least in part, the ability of 4c to modulate nuclear kinase proteins, which orchestrate important events in mitosis progression. We have also observed significant reduction of the relative RNAm abundance of CCNB1, PLK1, AURKA, AURKB in samples treated with 4c, with concomitant increase of CDKN1A (p21). Thus, compound 4c is a promising multi-target antitumor agent that should be considered for further in vivo studies. In the experiment, the researchers used 3,5-Dihydroxybenzaldehyde(cas: 26153-38-8Recommanded Product: 3,5-Dihydroxybenzaldehyde)

3,5-Dihydroxybenzaldehyde(cas: 26153-38-8) is a building block. It has been used in the synthesis of 2,4-dimethylbenzoylhydrazones with antileishmanial and antioxidant activities.Recommanded Product: 3,5-Dihydroxybenzaldehyde

Referemce:
Alcohol – Wikipedia,
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Recommanded Product: 3-HydroxybenzaldehydeIn 2020 ,《A highly efficient one-pot multicomponent synthesis of 3,4-dihydropyrimidin-2-(1H)-ones/thiones catalyzed by strontium pyroarsenate nano-plates》 was published in Journal of Molecular Structure. The article was written by Esmaeili, Rozhin; Kafi-Ahmadi, Leila; Khademinia, Shahin. The article contains the following contents:

The present work described the one-pot multicomponent synthesis of heterocyclic 3,4-dihydropyrimidin-2-(1H)-ones I [R1 = H, 2-Cl, 4-OH, etc.; R2 = OMe, OEt; X = O] and thiones II [X = S] (DHPMs) under via Biginelli reaction of benzaldehydes, alkyl acetates, urea/thiourea under solvent-free conditions by Sr2As2O7 nanocatalyst. Sr2As2O7 nanocatalyst was synthesized by solvothermal reactions at stoichiometric molar ratio. The characterizations of the as-prepared nanomaterials were performed by X-ray powder diffraction (XRPD) and fourier-transform IR (FTIR) techniques. According to Rietveld anal. data, it was found that reaction time had a considerable effect on crystal phase change from monoclinic to tetragonal crystal system. Field emission scanning electron microscope (FESEM) images showed that the morphol. of the obtained materials was changed by increasing the reaction time, from 24 to 120 h, from long-length rods to multigonal plates. Langmuir-Hinshelwood kinetic model revealed that the reactions followed a pseudo-first order kinetic model.3-Hydroxybenzaldehyde(cas: 100-83-4Recommanded Product: 3-Hydroxybenzaldehyde) was used in this study.

3-Hydroxybenzaldehyde(cas: 100-83-4) is used as an ionophore, during the development of an highly selective and sensitive PVC membrane sensor, which can be used as a Tb3+ ion selective electrode.Recommanded Product: 3-Hydroxybenzaldehyde

Referemce:
Alcohol – Wikipedia,
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Formula: C6H12OIn 2019 ,《Systematically Controlled Decomposition Mechanism in Phosphorus Flame Retardants by Precise Molecular Architecture: P-O vs P-N》 was published in ACS Applied Polymer Materials. The article was written by Markwart, Jens C.; Battig, Alexander; Zimmermann, Lisa; Wagner, Martin; Fischer, Jochen; Schartel, Bernhard; Wurm, Frederik R.. The article contains the following contents:

Flame retardants (FR) are inevitable additives to many plastics. Halogenated organics are effective FRs but are controversially discussed due to the release of toxic gases during a fire or their persistence if landfilled. Phosphorus-containing compounds are effective alternatives to halogenated FRs and have potential lower toxicity and degradability. In addition, nitrogen-containing additives were reported to induce synergistic effects with phosphorus-based FRs. However, no systematic study of the gradual variation on a single phosphorus FR containing both P-O and P-N moieties and their comparison to the resp. blends of phosphates and phosphoramides was reported. This study developed general design principles for P-O- and P-N-based FRs and will help to design effective FRs for various polymers. We synthesized a library of phosphorus FRs that only differ in their P-binding pattern from each other and studied their decomposition mechanism in epoxy resins. Systematic control over the decomposition pathways of phosphate (P=O(OR)3), phosphoramidate (P=O(OR)2(NHR)), phosphorodiamidate (P=O(OR)(NHR)2), phosphoramide (P=O(NHR)3), and their blends was identified, for example, by reducing cis-elimination and the formation of P-N-rich char with increasing nitrogen content in the P-binding sphere. Our FR epoxy resins can compete with com. FRs in most cases, but we proved that the blending of esters and amides outperformed the single-mol. amidates/diamidates due to distinctively different decomposition mechanisms acting synergistically when blended. The results came from multiple reactions, including the reaction of 5-Hexen-1-ol(cas: 821-41-0Formula: C6H12O)

5-Hexen-1-ol(cas: 821-41-0) is used in cyclization to a tetrahydropyran by phenylselenoetherification. It is also used as a building block in synthetic chemistry.Formula: C6H12O

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Alcohol – Wikipedia,
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《Alternatives to Phosphinooxazoline (t-BuPHOX) Ligands in the Metal-Catalyzed Hydrogenation of Minimally Functionalized Olefins and Cyclic β-Enamides》 was published in Advanced Synthesis & Catalysis in 2017. These research results belong to Biosca, Maria; Magre, Marc; Coll, Merce; Pamies, Oscar; Dieguez, Montserrat. Synthetic Route of C24H34O2 The article mentions the following:

A new series of readily accessible iridium- and rhodium-phosphite/oxazoline catalytic systems that can efficiently hydrogenate, for the first time, both minimally functionalized olefins and functionalized olefins, such as Et 3-phenylbut-2-enoate, Et (2Z)-3-cyclohexyl-3-phenylprop-2-enoate, [(1E)-1-methyl-1-propen-1-yl]benzene, etc. (62 examples in total), with high enantioselectivities (up to >99% ee) and conversions has been reported. The phosphite-oxazoline ligands, which are readily available in only two synthetic steps, are derived from previous privileged 4-alkyl-2-[2-(diphenylphosphino)phenyl]-2-oxazoline (PHOX) ligands by replacing the phosphine moiety by a biaryl phosphite group and/or the introduction of a methylene spacer between the oxazoline and the Ph ring. The modular design of the ligands has given the opportunity not only to overcome the limitations of the iridium-PHOX catalytic systems in the hydrogenation of minimally functionalized Z-olefins and 1,1-disubstituted olefins, but also to expand their use to unfunctionalized olefins containing other challenging scaffolds (e.g., exocyclic benzo-fused and triaryl-substituted olefins) and also to olefins with poorly coordinative groups (e.g., α,β-unsaturated lactams, lactones, alkenylboronic esters, etc.) with enantioselectivities typically >95% ee. Moreover, both enantiomers of the hydrogenation product could be obtained by simply changing the configuration of the biaryl phosphite moiety. Remarkably, the new catalytic systems also provided excellent enantioselectivities (up to 99% ee) in the asym. hydrogenation of another challenging class of olefins – the functionalized cyclic β-enamides, such as N-(6-bromo-3,4-dihydronaphthalen-2-yl)acetamide, N-(2H-chromen-3-yl)acetamide, N-(8-methoxy-3,4-dihydronaphthalen-2-yl)acetamide, etc. Again, both enantiomers of the reduced amides could be obtained by changing the metal from Ir to Rh. The environmentally friendly propylene carbonate which can be used with no loss of enantioselectivity was also demonstrated. Another advantage of the new ligands over the PHOX ligands is that the best ligands are derived from the affordable (S)-phenylglycinol rather than from the expensive (S)-tert-leucinol.(R)-3,3′-Di-tert-butyl-5,5′,6,6′-tetramethylbiphenyl-2,2′-diol(cas: 329735-68-4Synthetic Route of C24H34O2) was used in this study.

(R)-3,3′-Di-tert-butyl-5,5′,6,6′-tetramethylbiphenyl-2,2′-diol(cas: 329735-68-4) belongs to phenols. Phenols are more acidic than typical alcohols. The acidity of the hydroxyl group in phenols is commonly intermediate between that of aliphatic alcohols and carboxylic acids (their pKa is usually between 10 and 12).Synthetic Route of C24H34O2

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Alcohol – Wikipedia,
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《Atroposelective Total Synthesis of the Fourfold ortho-Substituted Naphthyltetrahydroisoquinoline Biaryl O,N-Dimethylhamatine》 was published in Chemistry – A European Journal in 2019. These research results belong to Slack, Eric D.; Seupel, Raina; Aue, Donald H.; Bringmann, Gerhard; Lipshutz, Bruce H.. Quality Control of (R)-Oxiran-2-ylmethanol The article mentions the following:

A stereoselective total synthesis of O,N-dimethylhamatine (I), an analog of an axially chiral naphthylisoquinoline natural biaryl product from tropical Ancistrocladus lianas, is reported. The route features a late-stage atropo-diastereoselective biaryl bond formation. Generation of this especially challenging, sterically hindered tetra-ortho-substituted array was achieved by using Nolan’s (IPr*NHC)PdCinCl pre-catalyst under mild Negishi coupling conditions. Discussion is offered regarding the selectivity obtained exptl. and predicted from DFT calculations on the key biaryl coupling step that leads to the desired M-diastereomer. In the experiment, the researchers used many compounds, for example, (R)-Oxiran-2-ylmethanol(cas: 57044-25-4Quality Control of (R)-Oxiran-2-ylmethanol)

(R)-Oxiran-2-ylmethanol(cas: 57044-25-4) is a chiral building block used to construct an epoxyvinyl iodide intermediate in a synthesis of a furanocembrane, a marine natural product.Quality Control of (R)-Oxiran-2-ylmethanol

Referemce:
Alcohol – Wikipedia,
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《Effects of substituents on bridging ligands on the single-molecule magnet properties of Zn2Dy2 cluster complexes》 was written by Liu, Cai-Ming; Hao, Xiang; Zhang, De-Qing. Name: 2,6-PyridinedimethanolThis research focused onzinc dysprosium salen Schiff base pyridinedimethanol cluster complex preparation; magnetic property zinc dysprosium salen Schiff base pyridinedimethanol; crystal structure zinc dysprosium salen Schiff base pyridinedimethanol. The article conveys some information:

Two new Zn2Dy2 complexes were constructed from Zn (II) salen-type Schiff base complex fragment and 2,6-pyridinedimethanol (H2pdm) or its Br-substituted analog (4-bromopyridine-2,6-diyl)dimethanol (H2Brpdm); their mol. formulas are [Zn2Dy2(L)2(pdm)2(MeOH)2](ClO4)2 [1, H2L = N, N’- bis(3-methoxysalicylidene)-1,3-diaminopropane] and [Zn2Dy2(L)2(Brpdm)2(MeOH)2](ClO4)2 [2], the Dy (III) ions of which have a NO7 triangular dodecahedral coordination sphere. The two complexes show not only ferromagnetic interaction but also field-induced single-mol. magnet (SMM) behavior, which are rare Dy (III)-containing cluster complexes with the NO7 triangular dodecahedral coordination sphere that can show good magnetic relaxation. The energy barrier value of complex 2 is higher than those of complex 1 and the Dy (III) complexes with the DyNO7 triangular dodecahedral coordination configuration reported in the literature.2,6-Pyridinedimethanol(cas: 1195-59-1Name: 2,6-Pyridinedimethanol) was used in this study.

2,6-Pyridinedimethanol(cas: 1195-59-1) belongs to pyridine. Pyridine-based materials are valued for their optical and physical properties as well as their medical potential. Additionally, pyridine-based natural products continue to be discovered and studied for their properties and to understand their biosynthesis.Name: 2,6-Pyridinedimethanol

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《Efficacy and safety of ambroxol hydrochloride in the treatment of secretory otitis media: a systematic review and meta-analysis》 was published in Annals of Translational Medicine in 2022. These research results belong to Zhou, Xufeng; Jin, Xiulin; Yang, Linhong; Wei, Xiaoli. Reference of trans-4-((2-Amino-3,5-dibromobenzyl)amino)cyclohexanol hydrochloride The article mentions the following:

Secretory otitis media is a very common nonsuppurative inflammatory disease in otorhinolaryngol. Ambroxol hydrochloride helps to improve ciliary movement in the ear canal and promote the dissolution and discharge of secretions. However, its effect still lacks systematic evaluation. We conducted a meta-anal. of clin. studies to systematically evaluate the application effect of ambroxol hydrochloride. A computer-based search of the Chinese Biomedical Database (CBM), China National Knowledge Infrastructure (CNKI), PubMed, and Web of Science databases was conducted using the keywords “”Ambroxol hydrochloride”” & “”secretory otitis media””. Randomized controlled trials published after 2015 were selected and then screened and analyzed using RevMan 5.4 software. Ten studies involving a total of 998 patients were included. Meta-anal. showed that adding ambroxol hydrochloride to the original glucocorticoid treatment improved therapeutic efficacy [odds ratio (OR) = 4.95, 95% confidence interval (CI): 3.27, 7.50, P<0.00001], reduced tympanic pressure after treatment [mean difference (MD) = -19.04, 95% CI: -22.72, -15.36, P<0.00001], and increased the pure tone threshold (MD =6.37, 95% CI: 5.36, 7.37, P<0.00001), without increasing adverse reactions (OR = 0.51, 95% CI: 0.14, 1.85, P=0.30). On the basis of the original treatment of secretory otitis media, adding ambroxol hydrochloride treatment improved the therapeutic effect, reduced tympanic pressure after treatment, and improved the pure tone threshold (hearing), without increasing adverse reactions. The experimental process involved the reaction of trans-4-((2-Amino-3,5-dibromobenzyl)amino)cyclohexanol hydrochloride(cas: 23828-92-4Reference of trans-4-((2-Amino-3,5-dibromobenzyl)amino)cyclohexanol hydrochloride)

trans-4-((2-Amino-3,5-dibromobenzyl)amino)cyclohexanol hydrochloride(cas: 23828-92-4) enhances pulmonary surfactant production and stimulates ciliary activity.Reference of trans-4-((2-Amino-3,5-dibromobenzyl)amino)cyclohexanol hydrochloride It promotes mucus clearance, facilitates expectoration and eases productive cough, allowing patients to breathe.

Referemce:
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