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Spectroscopic data

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Summary of chemistry doctoral thesis: Study on chemical constituents and biological activities from the leaves of Excoecaria agallocha L. and Excoecaria cochinchinensis Lour.

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Physical properties and spectroscopic data of the isolated compounds. Physical properties and spectroscopic data of the isolated compounds from E. This section presents physical properties and spectroscopic data of 09 compounds from E. This section presents physical properties and spectroscopic data of 13 compounds from E. Results on cytotoxic activities of isolated compounds III.2.1. The effects of the MeOH extract from E. Results on antimicrobial activity of compounds from E..

Synthesis and spectroscopic properties of (N/O) mono- and dispirocyclotriphosphazene derivatives with benzyl pendant arms: Study of biological activity

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Analytical and spectroscopic data of the phosphazenes were consistent with their suggested structures. Antimicrobial activities of the benzyl-pendant-armed cyclotriphosphazenes were scrutinized against G. Minimum inhibitory concentrations and minimal bacterial concentrations were in the range of 125–500 µ M.

Praesalide E, a new phenolic compound from the lichen Parmotrema praesorediosum (nyl.) Hale

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Their chemical structures were established primar- ily by NMR, MS spectroscopic data, optical rotations analysis as well as deduced from the methylated prod- uct. Table 1: NMR data of the compounds 1 and 1a. 11 10.42 brs 6.15 dd . interpreted NMR and MS data as well as searched the bibliog- raphy. T gave final approval of the manuscript to be submitted.. 1996;Available from: https://doi.org . New phenolic compounds from the lichen Parmotrema praesore- diosum (Nyl.) Hale.

A new monoaromatic compound from the lichen parmotrema tsavoense (Krog & swinscow) Krog & swinscow (Parmeliaceae)

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These spectroscopic data were suitable with those reported in the literature [4].. A new compound methyl (E)-2,4-dihydroxy-6-methyl-3-(3-oxobut-1-en-1- yl)benzoate (1), together with two known ones, atranol (2) and 2-O-methylatranol (3), were isolated from the lichen Parmotrema tsavoense collected in Binh Thuan province.. P., “New meta-depsidones and diphenyl ethers from the lichen Parmotrema tsavoense (Krog &. Swinscow) Krog &

Deposition and characterization of Cu9S5 nanocrystals from unsymmetrical [(Hex)(Me)NC(S)NC(O)C6H3(NO2)2-3,5]2Cu(II) and [(Et)(Bu)NC(S)NC(O)C6H4-4-NO2]2Cu(II) complexes by colloidal thermolysis method

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The spectroscopic data clearly indicate the loss of the proton originally bonded to the nitrogen atom of the (NH–CO) amide groups. Another prominent change is observed for the carbonyl functional group stretching vibrations.

Zr(IV), Ti(IV), and V(III) complexes of some benzimidazole, benzothiazole, and benzoxazole ligands: characterization and catalyst efficiency in ethylene polymerization

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NMR and mass spectroscopic data of ligands 1–5 and complexes 6–20.. 11.82 (br, 2H, NH), 6.95 (d, 2H, J = 8.1 Hz), 6.91(s, 2H). 6.82 (d, 2H, J = 8.1 Hz), 2.23 (s, 6H, CH 3. 3 a 7.93 [d, 2H, J = 7.6 Hz] 7.73 [d, 2H, J = 7.6 Hz], 7.51 [t, 4H, J = 7.6 Hz]. 7.63 (s, 2H), 7.11 [d, 2H, J = 7.8 Hz], 6.98 [d, 2H, J = 7.8 Hz]. 8.15 [d, 2H, J = 7.8 Hz], 7.96 [d, 2H, J = 7.8 Hz], 7.54 [d, 2H, J = 7.8 Hz], 7.47 [t, 2H, J = 7.8 Hz]. 6 12.50 (br, 2H, NH), 7.40 [d, 4H,.

New soluble amidoamine substituted phthalocyanines: synthesis, characterization, and investigation of their solution properties

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The yield was 73% and the formation of 1 was confirmed by the combination of IR, NMR, elemental analysis, and MS spectroscopic data. The IR spectrum of compound 1 indicated that the aliphatic O–H peak, the N–H peak belonging to the amide group, and the carbonyl peaks of amide and COO groups are at and 1256 cm − 1 respectively. The 8 peaks in the 13 C NMR spectrum, elemental analysis, and mass spectra results supported the proposed structure as well..

Convenient synthesis of new polysubstituted isoindole-1,3-dione analogues

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For the synthesis of another norcantharimide derivative, the imide 5 was reacted with dichloroketene under microwave irradiation. 1 H and 13 C NMR spectroscopic data confirmed the addition of dichloroketene to the C=C bond.. We assume that the ketene approaches the C=C double bond from the less congested side to give the tricyclic compound 12, similar to the hydroxylation reaction of alcohol 7. The structure of 12 was assigned by 1 H and 13 C NMR spectra.

Summary of chemistry doctoral thesis: Study on chemical constituents and inhibitory activities of enzymes α-glucosidase and α amylase of Gymnema sylvestre (RETZ.) R.BR. EX SM. and Gymnema latifolium wall. EX wight

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Physical properties and spectroscopic data of the isolated compounds. Physical properties and spectroscopic data of the isolated compounds from G. Results on α-glucosidase inhibitory activity of compounds. latifolium were tested for α-glucosidase inhibitory activity in vitro (Table 2.2). The results of α-glucosidase inhibitory activity of 23 compounds (GS1-GS16 and GL1-GL8) are shown in the table below..

Limonoids from fruits of melia dubia cav. in Viet Nam

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Based on ESI-MS, 1 H-, 13 C-NMR, DEPT, 1 H- 1 H COSY, NOESY, HSQC and HMBC spectral data and comparison with the reported spectral data of 21α- O-methylmelianodiol [13], compound 1 had been identified as 21α-O-methylmelianodiol.. Both the 1 H- and 13 C-NMR spectroscopic data of compound 2 (Table 1) were comparable to those of 1, suggesting it was also a triterpene possessing a methoxy group.

Synthesis, characterization, and biological evaluation of new copper complexes of naphthyl pyrazole ligands

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Analytical and spectroscopic data of the synthesized complexes are given in Table 5. The experimental magnetic moment of the complex was found to be 1.75 and 2.27 B.M. According to the ICP-OES results, wt % Cu of the complexes were found and compared well with their theoretical values..

Synthesis and evaluation of catecholase activities of metal complexes of 1,4-substituted piperazine Mannich base of 4-acetamidophenol

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The Mannich base herein studied has been encountered in the series of compounds reported by Agrawal and Sharma with the spectroscopic data unreported. 30 was adopted in the. The progress of the reaction was monitored with TLC and cooling the reaction mixture upon completion led to the formation of a crystalline solid. H, 6.84. H, 7.16. Synthesis of metal complexes. All the four metal complexes (1–4) were prepared by a general procedure.

Water-soluble phthalocyanines containing azo dye; microwave-assisted synthesis and photochemical properties of ZnPcs

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Characterization of the phthalocyanine compounds was achieved by analysis of spectroscopic data from 1 H NMR, 13 C NMR, IR, UV/vis, mass spectroscopy, and elemental analyses. 1 H NMR and 13 C NMR spectra of the metallophthalocyanines (M: Cu, Co) were precluded due to having paramagnetic metal atom. In the FT-IR spectra, disappearance of the OH band at about 3300 cm − 1 and the appearance of the CN band at and 2236 cm − 1 clearly indicate the formation of compounds 2, 3, 5, and 6.

Flavonoids and their cytotoxic activity from Tithonia diversifolia

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The complete 1 H- and 13 C NMR spectroscopic data of 1-3 and HMBC correlations of 2 are shown in Table 1.. KB, Hep, Lu1 and MCF7 human cancer cell lines were chosen for screening their inhibition effect using MTT method [8, 9]. Compounds 1-3 were initially screened at a fixed concentration of 100g/mL and subsequently assayed at four concentrations and 0.16g/mL), and IC 50 value for each compound was calculated.

Synthesis, characterization, and DFT calculation of a Pd(II) Schiff base complex

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The H 2 L Schiff-base ligand and its Pd(II) complex were characterized by elemental analysis, spectroscopic data (IR, UV-Vis), and molar conductance. The electronic spectra of the ligand and complex were recorded in DMSO (see Figures 3 and 4). The UV-Vis spectrum of the free ligand H 2 L exhibits 3 absorption bands, at 280, 308, and 376 nm. The absorption at 280 nm can be assigned to the π – π* transition of the benzene rings.

Convenient method for synthesis of various fused heterocycles via utility of 4-acetyl-5-methyl-1-phenyl-pyrazole as precursor

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The assigned structures of the latter new products 8 were consistent with their spectroscopic data (IR, MS, 1 H NMR) and elemental analyses (see Experimental). Moreover, the 1 H NMR spectra of compounds 8 revealed, in addition to the aromatic proton signals, a characteristic singlet signal in the region δ assignable to H-5 of the isoxazole ring residue.

Investigation of zinc oxide thin film by spectroscopic ellipsometry

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In the process of fitting parameters of model and sample, by using the Marquardt – Levenberg algorithm [5] one can get the difference between the experimental values (from the measurement) and calculated values (from the model).. where σ i is the standard deviation of the i -th data point N is the number of data points. Mes i is the i -th experimental data point. Th i is the i -th calculated data point from assumed theoretical model. The first fitting model of ZnO sample..

Synthesis and spectroscopic characterization of new phthalocyanine derivatives: application as photocatalysts for the degradation of Orange G

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Literature k obs data for different concentrations of OG degraded in the presence of Pcs as compared to those obtained in the present work.. Overall, the spectroscopic characteristics of new sets of Pcs with moderate singlet oxygen quantum yield ( Φ. These Pcs were found to show considerably high photodegradation rates for the degradation of OG in DMSO when compared to some Pcs reported earlier in aqueous media.

Spectroscopic and thermodynamic approach to the interaction of nonperipherally substituted cationic phthalocyanines with calf thymus (CT)-DNA

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Based on the data given in Tables 1 and 2, 1Q–3Q react with DNA spontaneously with high affinity.. The self-association of the compounds (1Q–3Q) is disrupted by the addition of DNA that acts as surfactant and increases the tendency towards monomers.. The spectra show that with the in- crease in interaction the absorption of 1Q–3Q decreases and at a certain amount of DNA the complexation of Pc–DNA occurs..

Synthesis, spectroscopic characterization, and genotoxicity of a new group of azo-oxime metal chelates

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The structures of the compounds were elucidated from the elemental analysis data and spectroscopic studies. Elemental analyses of the chelates suggested that the metal to ligand ratio was 1:2. It was found that the ligand acts as a bidentate bending through the phenolic oxygen and nitrogen atom of the C = N-OH group similar to most oximes. One of the major characteristics of azo dyes is the presence of one or more azo (-N = N-) groups.