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101.
102.
Indole-fused benzo-1,4-diazepines were synthesized by copper-catalyzed domino three-component coupling-indole formation- N-arylation under microwave irradiation from a simple N-mesyl-2-ethynylaniline. This method was also applicable to the formation of heterocycle-fused 1,4-diazepines. 相似文献
103.
Margadonna S Takabayashi Y McDonald MT Kasperkiewicz K Mizuguchi Y Takano Y Fitch AN Suard E Prassides K 《Chemical communications (Cambridge, England)》2008,(43):5607-5609
The newly discovered superconductor FeSe(1-x) (x approximately 0.08, T(c)(onset) approximately 13.5 K at ambient pressure rising to 27 K at 1.48 GPa) exhibits a structural phase transition from tetragonal to orthorhombic below 70 K at ambient pressure-the crystal structure in the superconducting state shows remarkable similarities to that of the REFeAsO(1-x)F(x) (RE = rare earth) superconductors. 相似文献
104.
Okano A Mizutani T Oishi S Tanaka T Ohno H Fujii N 《Chemical communications (Cambridge, England)》2008,(30):3534-3536
Treatment of allenic bromoalkenes bearing a nucleophilic moiety with a catalytic amount of palladium(0) in the presence of TBAF or Cs(2)CO(3) in MeCN affords bicyclic heterocycles in good to high yields, through zipper-mode cascade cyclisation. 相似文献
105.
The first total synthesis of mycestericin A (1) starting from tartrates is described. The Overman rearrangement of an allylic trichloroacetimidate generated a tetra-substituted carbon with nitrogen, and subsequent stereoselective transformations afforded the highly functionalized vinyl iodide. The cross-coupling of the vinyl iodide with a chiral organozinc species under Negishi conditions, followed by deprotection, completed the total synthesis of 1. 相似文献
106.
Oishi Y Kato T Narita T Ariga K Kunitake T 《Langmuir : the ACS journal of surfaces and colloids》2008,24(5):1682-1685
Atomic force microscopy observations of a (hydrocarbon guanidinium/fluorocarbon carboxylic acid) mixed monolayer revealed that a nanoscopic phase-separated structure was formed by a combination of attractive interaction between the oppositely charged head groups and repulsive phase separation of the hydrocarbon and fluorocarbon chains. 相似文献
107.
Kang JH Asai D Kim JH Mori T Toita R Tomiyama T Asami Y Oishi J Sato YT Niidome T Jun B Nakashima H Katayama Y 《Journal of the American Chemical Society》2008,130(45):14906-14907
We succeeded in cancer cell specific gene expression by using a polyplex responsive to protein kinase Calpha, which is activated in various types of cancer cells. 相似文献
108.
Oishi Tomohiro 《原子核物理评论》2016,33(2):203-206
We calculate the two-proton decay width of the 6Be nucleus employing the schematic densitydependent contact potential for the proton-proton pairing interaction. The decay width is calculated with a time-dependent method, in which the two-proton emission is described as a time-evolution of a threebody meta-stable state. Model-dependence of the two-proton decay width has been shown by comparing the results obtained with the two different pairing models, schematic density-dependent contact and Minnesota interactions, which have zero and finite ranges, respectively. 相似文献
109.
110.
The stereoselective total synthesis of (+)-vittatine 1 and (+)-haemanthamine 2 starting from d-glucose is described. The cyclohexene ring in 1 was prepared in an optically active form from d-glucose using Ferrier's carbocyclization reaction, and the critical quaternary carbon was stereoselectively generated via chirality transfer by the Claisen rearrangement of cyclohexenol 6. The hexahydroindole skeleton was effectively constructed by the intramolecular aminomercuration-demercuration of 14, followed by Chugaev reaction to provide 16. Finally, Pictet-Spengler reaction completed the first chiral synthesis of (+)-vittatine 1. On the other hand, the α-hydroxylation of the ester 5 stereoselectively proceeded to give α-hydroxy ester 19, to which was introduced an amino function to provide 4. A similar transformation of 4, as employed in the synthesis of vittatine, furnished (+)-haemanthamine 2. 相似文献