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Polycyclic Compounds (4)
Articles on Polycyclic Compounds
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Active chromatic control on the group velocity of light at arbitrary wavelength in benzocyclobutene polymer.
Opt Express 17(20):18292-303 (2009) PMID 19907620
A novel method is proposed to generate slow and fast lights at arbitrary signal wavelength in benzocyclobutene (BCB) polymer, which eliminates the requirement on the optical nonlinearity or the resonant effect at the signal wavelength with the help of the thermo-optic nonlinear effect induced by a c... -
Fused polycyclic nucleophilic carbenes - synthesis, structure, and function.
Dalton Trans (2009) PMID 20449128
Interest in stable nucleophilic carbenes has grown rapidly since the isolation of the first "bottle-able" example in 1991. Not only has the structural variation of this class of compounds seen an incredible expansion from laboratories around the world, but the chemical reactivity of these compounds... -
Remediation of PAH spiked soils: concentrated H2O2 treatment/continuous hot water extraction-oxidation.
J Hazard Mater 168(2-3):1359-65 (2009) PMID 19356845
Artificially contaminated soil with four different polynuclear aromatic hydrocarbons (acenaphthene, phenathrene, anthracene and fluoranthene) has been separately treated by two different processes: (A) concentrated hydrogen peroxide at mild conditions of temperature (343-393 K) and pressure (0.5 MPa... -
Intramolecular cyclopropene-furan [2 + 4] cycloaddition followed by a cyclopropylcarbinyl rearrangement to synthesize the BCD rings of corti...
Org Lett 11(17):3938-41 (2009) PMID 19655736
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Molecular Oxygen and Sulfur Reactivity of a Cyclotriveratrylene Derived Trinuclear Copper(I) Complex
Inorg Chem 48(17):8342-8356 (2009) PMID 19663454 PMCID PMC2917907
Our continuing efforts into developing copper coordination chemistry relevant to dioxygen-processing copper proteins has led us to design and synthesize a cyclotriveratrylene (CTV)-based trinucleating ligand, CTV-TMPA, which employs tetradentate tris(2-pyridylmethyl)-amine chelates (TMPA) for their... -
Air pollution in relation to U.S. cancer mortality rates: an ecological study; likely role of carbonaceous aerosols and polycyclic aromatic ...
Anticancer Res 29(9):3537-45 (2009) PMID 19667146
The air pollution index correlated with respiratory, digestive tract, urogenital, female, blood and skin cancer. Air pollution was estimated to account for 5% of male cancer deaths and 3% of female cancer deaths between 1970-1994. Solar UVB was inversely correlated with all these types of cancer exc... -
Alternethanoxins A and B, polycyclic ethanones produced by Alternaria sonchi , potential mycoherbicides for Sonchus arvensis biocontrol.
J Agric Food Chem 57(15):6656-60 (2009) PMID 19594161
Alternaria sonchi is a fungal pathogen isolated from Sonchus arvensis and proposed as a biocontrol agent of this noxious perennial weed. Different phytotoxic metabolites were isolated from solid culture of the fungus. Two new polycyclic ethanones, named alternethanoxins A and B, were characterized u... -
Total synthesis of (+)-lyconadin A and related compounds via oxidative C-N bond formation.
J Am Chem Soc 131(31):11187-94 (2009) PMID 19591469
We have discovered a highly efficient oxidative C-N bond forming reaction that relies on the union of a nitrogen anion and a carbon anion. Empirical evidence amassed during our synthetic studies suggests that the mechanism of the C-N bond forming process encompasses polar as well as radical processe... -
Schisandrin B protects rat cortical neurons against Abeta1-42-induced neurotoxicity.
Pharmazie 64(7):450-4 (2009) PMID 19694182
We investigated the neuroprotective effects of schisandrin B on amyloid-beta1-42-induced toxicity and its potential mechanisms in rat cortical neuron cells. Amyloid beta1-42 significantly reduced cell viability and increased apoptosis. Pretreatment with schisandrin B prior to amyloid-beta1-42 exposu... -
[Study on the chemical constituents of the fruit handles from Schizandra chinensis].
Zhong Yao Cai 32(7):1054-6 (2009) PMID 19873730
Eight compounds were isolated and identified as wuweizisu C (I), ganwuweizic acid(II), beta-sitosterol(III), gomisin A(IV), schizandrin(V), daucosterol(VI), wuweizisu A(VII), gamma-schizandrin (VIII). CONCLUSION: Compounds I - VIII are isolated from the fruit handles of Schizandra chinensis for the...
