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《中国化学快报》1997,(2)
KadsllreIlinM(7s.8s-.1.4.3'-tril1letllop'-7"oxo-n0r-8'.9'-7.0.4'.8.5'-neolignan)u'asisolatedfrollltlleaerialpart0fPiperKadsl1ra(Cl1ois}')0l1\viI'].aCllinesetraditiol1aldrugusedf0rtlletreatll1el1tofil1naI11l11ati0nundrl1eul1laticcol1diti0l1s.Aspartof0urresearcl1xt,0rkontlletotals}'lltllcsisofbe11z0fura11oidncolignans,l"ereportl1eret11efirstlotalsi'ntl1esisofkadsurenil1Masitsrecel11icfonn.Tllep-lltlleticro[1leisdepic1edi1ltl1ef0lloxt'il1gsclleme.3.4-Dilnetl1on'cil1nam}'lcllloride6.readil}'a\… 相似文献
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不久前,Research and Markets发布最新研究报告,报告内容显示,与整个分子光谱系统的市场增长状况相比,小型化光谱仪器的增长速度更高.预计,2015~2021年之间,整个分子光谱市场年增长率为7%,而小型/微型光谱仪的复合年增长率将达11%,2021年市场将达3亿美元. 相似文献
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Feng Ke-Sheng Chen Ru-YuInstitute of Elemento-Organii Chemistry Nankai University Tianjin Wang Hong-Gen Wang Ru-JiCentral laboratory Nankai University Tianjin 《结构化学》1993,(5)
<正> Crystal of the title compound Mr=304. 80 belongs to the triclinic, space group P1, with a = 7. 282)2), b=9. 064(2), c=11. 737(5) A , α=75. 79 (3), β=78. 70(3), γ=88. 49(2)°, V-736. 21 A3, Z=2, Dx = l. 375 g/cm3. The final refinement is converged with R=0. 062 and Rw= 0. 069.The five-membered heterocycle is in envelope conformation. The P - N bond length (1. 68(1)) indicates that the dπ-Pπ bond between P and N of the title compound is stronger than that of the corresponding 4-phenyl compound. 相似文献
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0-Diketonecompoundshaveuniquephotochemicalandcoordinationchemicalproperties.Interestinpolymeric0-diketoneanditsmetal-containingpolymershavebeengreatlystimulatedbytheirpotentialuseinphotoresist',catalysis'andfluorescenceandlasertields'.Thustherehasbeenatrendtowardsthedevelopmentofpolymeric0-diketone.However,foemaleimide-basedcopolymercontaining0-diketoneunitshasnotbeenreportedsotar.Inthispaper.a11ovelcopolymeric6-diketonewaspreparedbyradicalcopolynlerizationofp-DBMIwithSt.thestructureandprope… 相似文献
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