全部文献期刊学位论文会议报纸专利标准年鉴图书|学者科研项目
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作者:Ram P. Neupane , Stephen M. Parrish , Jayanti Bhandari Neupane ...
来源:[J].Marine Drugs(IF 3.978), 2019, Vol.17 (7)DOAJ
摘要:Several known sesquiterpenoid quinones and quinols ( 1 − 9 ), and kauamide ( 10 ), a new polyketide-peptide containing an 11-membered heterocycle, were isolated from the extracts of the Hawaiian marine sponge Dactylospongia elegans . The planar structure of 10 was determined...
作者:BOORUGA UMASEKHAR , PALLAB SAMANTA , TAMAL CHATTERJEE ...
来源:[J].Journal of Chemical Sciences(IF 1.298), 2016, Vol.128 (11), pp.1709-1715Springer
摘要:Abstract(#br)The oxasmaragdyrins containing one five membered heterocycle such as pyrrole, thiophene and furan in place of one of the meso-phenyl group were synthesized by acid-catalyzed oxidative coupling reaction of meso -heterocycle substituted dipyrromethane with 16-oxatripyr...
作者:Reza Ranjbar-Karimi , Asma Karbakhsh-Ravari , Alireza Poorfreidoni
来源:[J].Journal of the Iranian Chemical Society(IF 1.467), 2017, Vol.14 (11), pp.2397-2405Springer
摘要:In this paper, site reactivity of amidoximes with pentafluoropyridine under basic conditions in dry CH3CN was investigated. The aromatic nucleophilic substitution of pentafluoropyridine with amidoximes occurs in the 4-position of the pyridine ring by the oxygen si...
作者:Yuan Gao , Xin Guo , Xiaojing Li ...
来源:[J].Molecules(IF 2.428), 2010, Vol.15 (6), pp.4439DOAJ
摘要:Fifteen novel glycyrrhetinic acid derivatives containing a nitrogen heterocycle at C-30 and with different A-ring substituents were designed and synthesized. All of these derivatives have improved antiproliferative effects against human HL-60 leukemia cells. Compounds with a cyan...
作者:Yuan Gao , Xin Guo , Xiaojing Li ...
来源:[J].Molecules(IF 2.428), 2010, Vol.15 (6), pp.4439-4449DOAJ
摘要:Fifteen novel glycyrrhetinic acid derivatives containing a nitrogen heterocycle at C-30 and with different A-ring substituents were designed and synthesized. All of these derivatives have improved antiproliferative effects against human HL-60 leukemia cells. Compounds with a cyan...
作者:Xiu E Feng , De Peng Kong , Shu Rong Ban ...
来源:[J].Medicinal Chemistry Research(IF 1.612), 2019, Vol.28 (8), pp.1319-1337Springer
摘要:Abstract(#br)In the present study, we introduced the nitrogenated heterocycles and fluorine atoms into the 2,5′-dibromo-4,5,2′-trihydroxyl diphenylmethanone ( LM49 ), a bromophenol analog previously reported for its strong antioxidant ability involving in the Keap1–Nrf2...
作者:Yue Liu , Jiangnan Zhu , Yi Chen ...
来源:[J].Tetrahedron(IF 2.803), 2019Elsevier
摘要:Abstract(#br)In this paper, three novel bipolar host materials, 9,9′-Diphenyl-6-(4-pyridinyl)-3,3′-bicarbazole(BCz4Py), 9,9′-Diphenyl-6-(3-pyridinyl)-3,3′-bicarbazole(BCz3Py) and 9,9′-Diphenyl-6-(5-pyrimidinyl)-3,3′-bicarbazole(BCz5Pm), were synthesized by incorporation of bicarbazole as donor with pyridine/pyridimide based N-hexahydroxy nitric heterocycle...
作者:Qiong Wu , Weihua Zhu , Heming Xiao
来源:[J].Structural Chemistry(IF 1.772), 2013, Vol.24 (5), pp.1725-1736Springer
摘要:Abstract(#br)Density functional theory method was used to study the heats of formation (HOFs), electronic structure, energetic properties, and pyrolysis mechanism of a series of trinitromethyl-substituted heterocycle (including triazole, tetrazole, furazan, tetrazine, and fus...
作者:Maroua Bourkhis , Sameh Ayadi , Raoudha Abderrahim
来源:[J].Structural Chemistry(IF 1.772), 2017, Vol.28 (6), pp.1953-1958Springer
摘要:Amidines belong to the family of organic superbases; they are generally considered among the strongest useful synthetic auxiliary bases and are widely used in the synthesis of N-heterocycles. In this present work, we have studied the thermodynamic and the orbital recovery of the ...
作者:Hongtao Xu , Huanyu Tang , Huijin Feng ...
来源:[J].European Journal of Medicinal Chemistry(IF 3.499), 2014, Vol.73, pp.46-55Elsevier
摘要:Abstract(#br)Two series of novel C14 heterocycle substituted epi-triptolide derivatives as potential anticancer agents were synthesized and tested for their cytotoxicity against SKOV-3 and PC-3 tumor cell lines. The introduction of C14β-aryl heterocycle aminomethyl substituent ...

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