Search results for "azulene"
showing 10 items of 21 documents
CCDC 1029369: Experimental Crystal Structure Determination
2015
Related Article: Adrian E. Ion, Simona Nica, Augustin M. Madalan, Sergiu Shova, Julia Vallejo, Miguel Julve, Francesc Lloret, Marius Andruh|2015|Inorg.Chem.|54|16|doi:10.1021/ic5025197
CCDC 1029370: Experimental Crystal Structure Determination
2015
Related Article: Adrian E. Ion, Simona Nica, Augustin M. Madalan, Sergiu Shova, Julia Vallejo, Miguel Julve, Francesc Lloret, Marius Andruh|2015|Inorg.Chem.|54|16|doi:10.1021/ic5025197
CCDC 949947: Experimental Crystal Structure Determination
2013
Related Article: Adrian E. Ion, Simona Nica, Augustin M. Madalan, Catalin Maxim, Miguel Julve, Francesc Lloret, Marius Andruh|2014|CrystEngComm|16|319|doi:10.1039/C3CE41592A
CCDC 910383: Experimental Crystal Structure Determination
2013
Related Article: Y.Inokuma,S.Yoshioka,J.Ariyoshi,T.Arai,Y.Hitora,K.Takada,S.Matsunaga,K.Rissanen,M.Fujita|2013|Nature (London)|495|461|doi:10.1038/nature11990
CCDC 910382: Experimental Crystal Structure Determination
2013
Related Article: Y.Inokuma,S.Yoshioka,J.Ariyoshi,T.Arai,Y.Hitora,K.Takada,S.Matsunaga,K.Rissanen,M.Fujita|2013|Nature (London)|495|461|doi:10.1038/nature11990
Chamazulene-Rich Artemisia arborescens Essential Oils Affect the Cell Growth of Human Melanoma Cells
2020
Artemisia arborescens is an aromatic shrub whose essential oils are considered a potential source of molecules with industrial and pharmaceutical interest. The chemical profile of A. arborescens essential oils (EOs) was shown to be quite variable and various chemotypes have been identified. In this study, we compared the EOs composition of A. arborescens leaves and flowers collected from four different locations in Sicily. The EOs were assayed for their antiproliferative activity against A375 human malignant melanoma cells, also testing cell viability and cell membrane integrity. The evaluation of DNA fragmentation and caspase-3 activity assay was employed for the detection of apoptosis. Th…
Proton‐Gated Ring‐Closure of a Negative Photochromic Azulene‐Based Diarylethene
2020
Abstract Proton‐responsive photochromic molecules are attractive for their ability to react on non‐invasive rapid optical stimuli and the importance of protonation/deprotonation processes in various fields. Conventionally, their acidic/basic sites are on hetero‐atoms, which are orthogonal to the photo‐active π‐center. Here, we incorporate azulene, an acid‐sensitive pure hydrocarbon, into the skeleton of a diarylethene‐type photoswitch. The latter exhibits a novel proton‐gated negative photochromic ring‐closure and its optical response upon protonation in both open and closed forms is much more pronounced than those of diarylethene photoswitches with hetero‐atom based acidic/basic moieties. …
Two-Dimensional Coordination Polymers Constructed Using, Simultaneously, Linear and Angular Spacers and Cobalt(II) Nodes. New Examples of Networks of…
2014
Two novel bidimensional coordination polymers, [Co(azbbpy)(4,4'-bipy)0.5(DMF)(NCS)2]·MeOH (1) and [Co(azbbpy)(bpe)0.5(DMF)(NCS)2]·0.25H2O (2), resulted from the assembling of cobalt(II) ions by 1,3-bis(4-pyridyl)azulene, using either 4,4'-bipyridyl or 1,2-bis(4-pyridyl)ethylene as neutral spacers. The cobalt(II) nodes in 1 and 2 act as single-ion magnets (SIMs).
One-dimensional coordination polymers constructed from di- and trinuclear {3d–4f} tectons. A new useful spacer in crystal engineering: 1,3-bis(4-pyri…
2014
Four new heterometallic 3d–4f complexes have been obtained using bi- and trinuclear building blocks: 1∞[Ni(L1)Gd(NO3)3(azbbpy)]·CH3CN (1), [Zn(L1)Eu(NO3)3(azbbpy)]·H2O (2), 1∞[(CuL2)2Gd(NO3)2(dca)] 3 and 1∞[(NiL2)2Dy(H2O)4(oxy-bbz)]NO3·3H2O (4), [H2L1 = 1,3-propanediyl-bis(2-iminomethylene-6-methoxyphenol), H2L2 = 2,6-di(acetoacetyl)pyridine, azbbpy = 1,3-bis(4-pyridyl)azulene, dca− = dicyanamide anion, and oxy-bbz = the dianion of the 4,4′-oxy-bis(benzoic) acid]. 1 and 2 represent the first complexes containing 1,3-bis(4-pyridyl)azulene as a ligand. 1, 3, and 4 are one-dimensional coordination polymers constructed from heterometallic nodes connected by the exo-dentate ligands. Helical chai…
Sesquiterpene lactones and lignans from Artemisia arborescens
1997
The aerial parts of Artemisia arborescens yielded, in addition to several known compounds, a new guaianolide, a new homoditerpene endoperoxide, a new lignan of the sesamin type and a new azulene derivative.