Isoquinoline alkaloids possess broad pharmacological activities. In this study, the antifungal activity of twelve isoquinoline alkaloids, including berberine (1), jatrorrhizine (2), coptisine (3), corydaline (4), tetrahydroberberine (5), chelidonine (6), dihydrosanguinarine (7), chelerythrine (8...

Eight previously undescribed isoquinoline alkaloids, mucroniferanines H-M, together with 16 known isoquinoline alkaloids, were isolated from Corydalis mucronifera Maxim.. The structures of the previously undescribed compounds were elucidated by interpretation of 1D and 2D NMR spectroscopic and H...

This paper reports for the first time the strong cathodic electrochemiluminescence (ECL) behavior of quinoline, isoquinoline and their derivatives in aqueous solution with K2S2O8 as coreactant. The effects of K2S2O8 concentration, pH and scan rate on the ECL intensity have been studied in detail...

β-ionone is cyclized to 1,1,6-trimethyl-1,2,3,4-tetrahydronaphthalene in 80–95% yield. Selective derivatization at the 5- and/or 7-positions of 6-alkyl-1,1-dimethyl-1,2,3,4-tetrahydronaphthalenes was achieved by nitration, acylation, and reduction.

A series of novel dyes, whose structures are based on 5-phenyl-1,2,3,4-tetrahydronaphthalene skeleton have been fully synthesized and characterized. The dyes were prepared in two-stage synthesis reaction. The 2-cyano-3-[4-aminophenyl]-2-propenamide derivatives, and the final dyes were characteri...

A series of aryl cyclitols based on a 1,2,3,4-tetrahydronaphthalene scaffold have been synthesized in a stereocontrolled manner. These cyclitols possess four contiguous stereocenters amongst which one is a quaternary stereocenter, which has been constructed by applying enzymatic kinetic resoluti...

Fullerenes have been synthesized in sooting flames using a two-ring feedstock (1,2,3,4-tetrahydronaphthalene). Regardless of how yield is measured, dramatic improvement over a single-ring feedstock (toluene) was observed. Implications for the formation of fullerenes in sooting flames are briefly...

The detailed HF and B3LYP/6-311++G(d,p) comparative studies on the complete FT-IR and FT-Raman spectra of 6-methoxy-1,2,3,4-tetrahydronaphthalene [MTHN] have been studied. In view of the special properties and uses, the present investigation has been undertaken to provide a satisfactorily vibrat...

Sol-gel immobilized lipase from Burkholderia cepacia (Amano PS) was utilized for the first time as biocatalyst for kinetic resolution of 1,5-dihydroxy-1,2,3,4-tetrahydronaphthalene, by transesterification in batch and continuous-flow mode. The ternary silane precursor mixture of vinyltrimethoxys...

C60 crystals have potential applications in the optoelectronics, photoconducting devices and templated synthesis fields. However, their preparation is complex. A simple liquid-liquid interfacial precipitation method was used to fabricate hierarchically-organized C60 crystals with various topogra...

The methanol extract of Olax imbricata roots afforded one new sesquiterpenoid tropolone and three new 1,2,3,4-tetrahydronaphthalene derivatives, olaximbrisides A–D (1–4). Their structures were determined by 1D and 2D NMR experiments in combination of HRESIMS. The relative configurations were a...

This work reported a new strategy in producing synthetic diesel hydrocarbons from a mono-unsaturated fatty acid model compound, oleic acid and replacing high pressure molecular hydrogen with a hydrogen-rich donor solvent, 1,2,3,4–tetrahydronaphthalene for the first time. Under the absence of an...

Mismatch binding protein MutS binding to bulge structure in DNA duplexes was controlled by UV irradiation. 4-O-(2-Nitrobenzyl)thymidine or 4-O-[2-(2-nitrophenyl)propyl]thymidine was incorporated into DNA duplexes a bulged position. The MutS did not bind to the caged DNA duplexes but bound after ...

2-(4-Amino-substituted-3-nitrophenyl)-3-hydroxyquinolin-4(1H)-ones have been studied to evaluate their fluorescence properties and possible use as molecular fluorescent probes. The amino group was substituted with various alkyl moieties possessing a suitable terminal functional group (such as hy...

4-Nitrophenyl [sodium β-d-glucopyranosyluronate]-(1→3)-2-acetamido-2-deoxy-β-d-glucopyranoside (1) and 4-nitrophenyl [sodium β-d-glucopyranosyluronate]-(1→3)-2-acetamido-2-deoxy-β-d-galactopyranoside (2) were prepared from the zwitterions hyalobiuronic acid [β-d-glucopyranuronic acid-(1→...

Starting from (1S,2S)-2-amino-1-(4-nitrophenyl)propane-1,3-diol (p-nitrophenylserinol, a waste optical antipode product from chloromycetin production) or its 5-amino-1,3-dioxane derivatives, we report preliminary data concerning the conversion of these optically active substrates into novel N-mo...

The reactivity of thorium-phosphorus bonds was investigated with benzophenone. The insertion of two equivalents of benzophenone into both thorium-phosphorus bonds in (C5Me5)2Th[PH(2,4,6-R3C6H2)]2, R = Me or iPr, was observed. In addition, a new thorium polyphosphide complex, (C5Me5)2Th(P3Ph3) is...

Variation in the bitter taste of Cyclopia genistoides (honeybush) herbal tea and reported modulation between its major xanthones, mangiferin and isomangiferin, prompted further investigation into the potential modulatory effects of honeybush phenolics. Combinations of crude benzophenone (BF)-, x...

Ultrafiltration of Cyclopia genistoides extract was optimised to increase its benzophenone and xanthone content as quantified using HPLC-DAD. Regenerated cellulose (RC) and polyethersulphone membranes with molecular weight cut-offs of 10 and 30 kDa were evaluated in terms of compound enrichment,...

Benzophenones (BPs) of the type 2-R-BP and 2,2′-R-BP, carrying silicon- or germanium-containing substituents R (R = EY2X; E = Si, Ge; Y = H, Me, F, Cl; X = H, F, Cl, OTf) at one or at two ortho-positions of the arene rings, were theoretically designed. Among 26 compounds considered, only 10 mon...