Category: tetrahydroisoquinoline

Related Products of 693-67-4. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 1-Bromoundecane, is researched, Molecular C11H23Br, CAS is 693-67-4, about Inhibition of bacterial growth and galactosyltransferase activity of WbwC by α, ω-bis(3-alkyl-1H-imidazolium)alkane salts: Effect of varying carbon content. Author is Kocev, Alexander; Melamed, Jacob; Wang, Shuo; Kong, Xianqi; Vlahakis, Jason Z.; Xu, Yaozu; Szarek, Walter A.; Brockhausen, Inka.

A series of compounds was designed and synthesized having two imidazolium rings separated by a polymethylene spacer and having alkyl substituents on each of the imidazolium rings. The compounds were assayed for their effects on the activity of galactosyltransferase WbwC, and also on the growth of Gram-neg. and Gram-pos. bacteria, as well as human cells. The inhibition observed on enzyme activities and cell growth was dependent on the total number of carbons in the spacer and the alkyl substituents on the imidazolium rings. These readily synthesized, achiral compounds have potential as antimicrobial and antiseptic agents.

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Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: cis-Dichlorobis(pyridine)platinum(II)( cas:15227-42-6 ) is researched.Related Products of 15227-42-6.Howle, Jerry A.; Gale, Glen R.; Smith, Alayne B. published the article 《Proposed mode of action of antitumor platinum compounds based upon studies with cis-dichloro([G-3H]-dipyridine)platinum(II)》 about this compound( cas:15227-42-6 ) in Biochemical Pharmacology. Keywords: chloropyridine platinum tumor; DNA dichlorodipyridine platinum; erythrocyte dichlorodipyridine platinum; RNA dichlorodipyridine platinum. Let’s learn more about this compound (cas:15227-42-6).

The antitumor and antimitotic action of the pyridine-tritiated square-planar Pt complex cis-dichloro(dipyridine)platinum(II) (I) [15227-42-6] seems to depend on the dissociation of 1 or both chlorine atoms from the platinum atom. The resulting cationic, aquated species subsequently forms a bond with nucleic acid. I associate avidly with calf thymus DNA, high mol. weight yeast RNA, and bacterial and yeast tRNA, but not with bovine serum albumin, dextran, or purified erythrocyte membranes. Dialysis of the Pt-nucleic acid complexes in distilled water or NaCl results in loss of a portion of the original radioactivity. The Pt-DNA bond is resistant to dissociation by solubilization in alkali followed by trichloroacetic acid (TCA) precipitation Bonding of I to DNA in vitro is inhibited by NaCl; however, prior alkylation of the DNA with nitrogen mustard does not influence its subsequent bonding with I. I associate with intact Ehrlich ascites tumor cells in vitro at 2.deg. and 37.deg. and resists dissociation by washing with saline or TCA as well as solubilization in alkali followed by re-precipitation with TCA.

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Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Tun Nur Iskandar, Nur Amanina Juniasari; Guan-Yeow, Yeap; Maeta, Nobuyuki; Ito, Masato M.; Nakamura, Yoshiyuki; Gas, Katarzyna; Sawicki, Maciej researched the compound: 1-Bromoundecane( cas:693-67-4 ).Application of 693-67-4.They published the article 《Anisotropic and magnetic properties in non-metal and non-radical organic aggregates of tri-substituted phenyl derivatives》 about this compound( cas:693-67-4 ) in New Journal of Chemistry. Keywords: alkoxy Ph imine biphenyl ester preparation anisotropic magnetic property. We’ll tell you more about this compound (cas:693-67-4).

A new series of tri-substituted Ph derivatives containing an aromatic imine unit and biphenyl ester possessing various numbers of carbon atoms at the terminal alkoxy chain, OCnH2n+1 (n = 7-12), along with a lateral o-ethoxy substituent have been successfully prepared and characterized by CHN microanal. along with spectroscopic techniques (FTIR, 1H- and 13C-NMR). The texture observation under polarized light revealed that all the soft condensed materials exhibited an enantiotropic nematic (N) phase. The current studies have shown that the mesomorphic behavior is greatly influenced by the length of the alkoxy chains wherein the thermal stability of a tri-substituted Ph derivative will decrease if the terminal alkoxy chain is increased from n = 7 to 12. For the first time, these materials which do not possess any magnetic species in their structure, demonstrate magnetic interaction through naked eye observation as well as quant. measurement using a SQUID magnetometer.

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Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

Product Details of 882562-40-5. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 3-(2,5-Dichloropyrimidin-4-yl)-1-(phenylsulfonyl)-1H-indole, is researched, Molecular C18H11Cl2N3O2S, CAS is 882562-40-5, about Targeting transcription regulation in cancer with a covalent CDK7 inhibitor. Author is Kwiatkowski, Nicholas; Zhang, Tinghu; Rahl, Peter B.; Abraham, Brian J.; Reddy, Jessica; Ficarro, Scott B.; Dastur, Anahita; Amzallag, Arnaud; Ramaswamy, Sridhar; Tesar, Bethany; Jenkins, Catherine E.; Hannett, Nancy M.; McMillin, Douglas; Sanda, Takaomi; Sim, Taebo; Kim, Nam Doo; Look, Thomas; Mitsiades, Constantine S.; Weng, Andrew P.; Brown, Jennifer R.; Benes, Cyril H.; Marto, Jarrod A.; Young, Richard A.; Gray, Nathanael S..

Tumor oncogenes include transcription factors that co-opt the general transcriptional machinery to sustain the oncogenic state, but direct pharmacol. inhibition of transcription factors has so far proven difficult. However, the transcriptional machinery contains various enzymic cofactors that can be targeted for the development of new therapeutic candidates, including cyclin-dependent kinases (CDKs). Here the authors present the discovery and characterization of a covalent CDK7 inhibitor, THZ1, which has the unprecedented ability to target a remote cysteine residue located outside of the canonical kinase domain, providing an unanticipated means of achieving selectivity for CDK7. Cancer cell-line profiling indicates that a subset of cancer cell lines, including human T-cell acute lymphoblastic leukemia (T-ALL), have exceptional sensitivity to THZ1. Genome-wide anal. in Jurkat T-ALL cells shows that THZ1 disproportionally affects transcription of RUNX1 and suggests that sensitivity to THZ1 may be due to vulnerability conferred by the RUNX1 super-enhancer and the key role of RUNX1 in the core transcriptional regulatory circuitry of these tumor cells. Pharmacol. modulation of CDK7 kinase activity may thus provide an approach to identify and treat tumor types that are dependent on transcription for maintenance of the oncogenic state.

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Tetrahydroisoquinoline – Wikipedia,
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Li, Kai; Sun, Hongjian; Yang, Wenjing; Wang, Yajie; Xie, Shangqing; Li, Xiaoyan; Fuhr, Olaf; Fenske, Dieter published the article 《Efficient dehydration of primary amides to nitriles catalyzed by phosphorus-chalcogen chelated iron hydrides》. Keywords: nitrile preparation; primary amide dehydration phosphorus chalcogen chelated iron hydride catalyst.They researched the compound: Picolinamide( cas:1452-77-3 ).Related Products of 1452-77-3. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:1452-77-3) here.

A series of phosphorus-chalcogen chelated hydrido iron (II) complexes, (o-(R’2P)-p-R-C6H4Y)FeH(PMe3)3I (R = H, Me; R’ = iPr, Ph; Y = O, S, Se) were synthesized. The catalytic performances of I for dehydration of amides to nitriles were explored by comparing three factors: (1) different chalcogen coordination atoms Y; (2) R’ group of the phosphine moiety; (3) R substituent group at the Ph ring. It is confirmed that I (R = H; R’ = Ph; Y = S) with S as coordination atom has the best catalytic activity and I (R = H; R’ = Ph; Y = Se) with Se as coordination atom has the poorest catalytic activity among complexes I (R = H; R’ = Ph; Y = O), I (R = H; R’ = Ph; Y = S) and I (R = H; R’ = Ph; Y = Se). Electron-rich complex I (R = Me; R’ = iPr; Y = O) is the best catalyst among the seven complexes and the dehydration reaction was completed by using 2 mol% catalyst loading at 60° with 24 h in the presence of (EtO)3SiH in THF. Catalyst I (R = Me; R’ = iPr; Y = O) has good tolerance to many functional groups. Among the seven iron complexes, new complexes I (R = H, Me; R’ = iPr; Y = O) were obtained via the O-H bond activation of the preligands o-iPr2P(C6H4)OH and o-iPr2P-p-Me-(C6H4)OH by Fe(PMe3)4. Both I (R = H, Me; R’ = iPr; Y = O) were characterized by spectroscopic methods and X-ray diffraction anal. The catalytic mechanism was exptl. studied and also proposed.

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Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: cis-Dichlorobis(pyridine)platinum(II)(SMILESS: [Cl-][Pt+2]([N]1=CC=CC=C1)([Cl-])[N]2=CC=CC=C2,cas:15227-42-6) is researched.Related Products of 1452-77-3. The article 《Experimental and theoretical study of the cytotoxic activity of new tetrazole-containing cisplatin analogues and their trans-isomers》 in relation to this compound, is published in Doklady Natsional’noi Akademii Nauk Belarusi. Let’s take a look at the latest research on this compound (cas:15227-42-6).

Quantum chem. calculations within the framework of DFT were carried out for a set of platinum (II) complexes with nitrogen-containing heterocycles. A phys. interpretable QSAR model was developed and a correlation between the biol. activity and structural properties was obtained by means of the multiple linear regression method. The range of new tetrazole-containing platinum (II) complexes was synthesized, and their cytotoxic activity was exptl. determined and compared with the values predicted by the QSAR model. Crucial properties of compounds and their relationship with the mode of action were discussed.

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Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: cis-Dichlorobis(pyridine)platinum(II), is researched, Molecular C10H10Cl2N2Pt, CAS is 15227-42-6, about Preparation and spectroscopic investigations of platinum complexes. I. Interpretation of the spectra of inverse electron transfer and ligand field transitions of platinum(II) complexes with halide and nitrogen ligands, the main research direction is platinum inverse charge transfer; halide pyridine platinum UV.Category: tetrahydroisoquinoline.

Inverse electron-transfer transitions of the type, 5d(Pt) → π(L), were detected in the electronic absorption spectra of cis- and trans-PtL2X2 complexes in which N-containing ligands have an internal π-electron system (L = pyridine, 3- or 4-chloropyridine, 3,5-dichloropyridine, 4-pentyl- or 4-cyanopyridine, or piperidine; X = Cl, Br, or I). In addition to ligand-field (d-d) and ligand π-π* transitions, 3 charge-transfer transitions were distinguished in the spectra of these complexes in CH2Cl2 or cyclohexane solutions Quant. correlation was established between energy of the ligand field transitions and energy of the inverse charge-transfer transitions.

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Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 15227-42-6, is researched, SMILESS is [Cl-][Pt+2]([N]1=CC=CC=C1)([Cl-])[N]2=CC=CC=C2, Molecular C10H10Cl2N2PtJournal, Inorganic Chemistry called Activation of the trans geometry in platinum antitumor complexes. Synthesis, characterization, and biological activity of complexes with the planar ligands pyridine, N-methylimidazole, thiazole, and quinoline. Crystal and molecular structure of trans-dichlorobis(thiazole)platinum(II), Author is Van Beusichem, Marijo; Farrell, Nicholas, the main research direction is antitumor platinum chloro nitrogen donor complex; crystal structure platinum chloro thiazole complex.Recommanded Product: cis-Dichlorobis(pyridine)platinum(II).

The presence of planar ligands in trans-[PtCl2(py)2] greatly enhances the cytotoxicity of such species, with respect both to their corresponding cis isomer and also to trans-[PtCl2(NH3)2]. The cytotoxicity of trans-[PtCl2(py)2] in murine tumor cell lines is equivalent to the anticancer drug cisplatin, cis-[PtCl2(NH3)2]. The generality of this effect was studied for a range of structures with planar ligands of formula trans-[PtCl2(L)(L’)]. Three distinct series were examined-(1) L = L’ = py, N-methylimidazole (N-MeIm), and thiazole (Tz), (2) L = quinoline (quin), L’ = MeRSO where (R = Me, CH2Ph, Ph), and (3) L = quinoline, L’ = NH3. The synthesis and chem. characterization of all new complexes are described. An x-ray crystal structure determination for trans-[PtCl2(Tz)2] confirmed the geometry with N-bound thiazole. The crystals are monoclinic, space group C2/c, a 8.088(3), b 14.964(4), c 8.847(2) Å, β 99.50(2), Z = 4, R = 0.0545, Rw = 0.0655. Pt has the expected square planar coordination with l(Pt-Cl) = 2.300(5) Å and l(Pt-N) = 2.024(18) and 2.077(17) Å. Bond angles are normal with N(1)-Pt-N(2) = 180.0(1)°, N(1)-Pt-Cl(1) = 90.4(1)°, and N(2)-Pt-Cl(1A) = 89.6(1)°. The intensity data were collected with MoKα radiation with λ = 0.71073 Å. The thiazole rings are not coplanar but slightly tilted to each other at an angle of 14.3°. The dihedral angles between the Pt coordination plane and the thiazole rings are 119.3 and 105.0°. The biol. studies confirm the generality of activation of the trans geometry using planar ligands. Cytotoxicity tests in murine leukemia (L1210) cell lines both sensitive and rendered resistant to cisplatin show that the complexes show equivalent cytostatic activity to that of cisplatin. The activity is an order of magnitude greater than trans-[PtCl2(NH3)2]. The cytotoxicity is further marked by consistent activity in the cisplatin-resistant cell line. Contrary to the well-established but empirical structure-activity relationships, the trans geometry can give platinum complexes with cytotoxicity equivalent to that of the analogous cis isomer. The results point to a further source of platinum antitumor complexes acting by a different mol. mechanism to cisplatin with potential for antitumor activity complementary to that of the clin. used drug.

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Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

Recommanded Product: 1452-77-3. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: Picolinamide, is researched, Molecular C6H6N2O, CAS is 1452-77-3, about Spectroscopic and electrochemical recognition of H2PO-4 based on a ruthenium complex with 2-picolinamide. Author is Gong, Zhong-Liang; Zhong, Yu-Wu.

A ruthenium polypyridyl complex 4(PF6) with 2-picolinamide as an anionic NN̂ bidentate ligand is synthesized and characterized, including single-crystal X-ray anal. As an effective anion receptor in CH2Cl2, complex 4(PF6) shows selective spectroscopic and electrochem. recognition towards H2PO-4 over other anions tested (F-, Cl-, Br-, I-, HP2O3-7, HSO-4, AcO- and NO-3). Job’s plot and mass spectral analyses support that an adduct is formed between 4 and H2PO-4 with a 1:2 binding stoichiometry. The absorption spectral titration of 4(PF6) with H2PO-4 yields a global association constant in the order of 108 L2·mol-2 and an optical detection limit of 1.4 x 10-6 mol·L-1. In response to the presence of H2PO-4, the Ru(II/III) redox couple of 4(PF6) displays a “”two-wave behavior”” accompanied by a large neg. shift from +0.74 to +0.45 V vs Ag/AgCl. 1H NMR spectral titration analyses suggest that effective hydrogen-bonding interactions are present between 4 and H2PO-4, which are believed responsible for the observed spectroscopic and electrochem. response of 4(PF6) toward H2PO-4.

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Tetrahydroisoquinoline – Wikipedia,
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Recommanded Product: 15227-42-6. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: cis-Dichlorobis(pyridine)platinum(II), is researched, Molecular C10H10Cl2N2Pt, CAS is 15227-42-6, about Synthesis, characterization and cytotoxicity of some palladium(II), platinum(II), rhodium(I) and iridium(I) complexes of ferrocenylpyridine and related ligands. Crystal and molecular structure of trans-dichlorobis(3-ferrocenylpyridine)palladium(II). Author is Rajput, Jaisheila; Moss, John R.; Hutton, Alan T.; Hendricks, Denver T.; Arendse, Catherine E.; Imrie, Christopher.

The preparation of a series of ferrocenyl nitrogen donor ligands including ferrocenylpyridines, ferrocenylphenylpyridines and 1,1′-di(2-pyridyl)ferrocene is described. Coordination studies of the substituted pyridines (L) were carried out with platinum, palladium, rhodium and iridium. This resulted in the preparation of the following types of complexes: [MCl(CO)2(L)] and [M(cod)(L)2]ClO4 where M = Rh or Ir, cod = 1,5-cyclooctadiene; [M’Cl2(L)2] where M’ = Pt or Pd. The X-ray crystal structure of trans-dichlorobis(3-ferrocenylpyridine)palladium was obtained. The complexes were screened for activity against two human cancer cell lines. At least two of the complexes displayed growth inhibition similar to that of the widely used chemotherapeutic agent, cisplatin.

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Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem