共查询到17条相似文献,搜索用时 328 毫秒
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以脱氢枞胺为原料,经氨基酰化、12位乙酰化、与对甲苯磺酰肼形成对甲苯磺酰腙衍生物,再通过卡宾中间体与C60进行[2+1]环加成反应合成了C60-脱氢枞胺衍生物。目标化合物经IR,UV-Vis,1H NMR,13C NMR,MALDI-TOF MS表征,所得化合物为[6,6]闭环结构C60加成产物。 相似文献
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《有机化学》2019,(11)
根据活性叠加原理,在天然产物松香的改性产品光学纯脱氢枞胺(1)的B环和C环中引入不同的芳香杂环,合成了三个光学纯脱氢枞基杂环衍生物,乙酰脱氢枞胺-6,7-(3-巯基)-1,2,4-三嗪(5)、乙酰脱氢枞胺-6,7-吲哚(7)和12-(2-氨基噻唑)乙酰脱氢枞胺(10).荧光光谱和圆二色谱分析证明,化合物5、7和10均能够与DNA发生作用,且作用强度为5107.凝胶电泳实验结果表明, 5、7和10都能够对p BR 322质粒DNA进行单链切割且5的切割能力最强.另外,脱氢枞胺及化合物5、7和10与氯化铜的复配物(32 μmol/L)对人乳腺肿瘤细胞MCF-7的增殖抑制率,分别为86.0%(1),86.7%(5), 34.4%(7)和0 (10). 相似文献
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通过不同的方法在脱氢枞胺中引入酰腙、没食子酸、肟、异烟基等对清除自由基有效果的基团,设计合成了几种新型的脱氢枞胺衍生物.利用1H NMR,13C NMR,IR和HRMS对所有合成的化合物进行了结构表征.测试了所合成的化合物对清除超氧阴离子(O2-)和二苯代苦味酰基自由基(DPPH·)的活性,其中N-(3,4,5-三羟基苯甲酰基)-脱氢枞胺(6)对O-2的抑制率达到38.18%,是常用抗氧化药物Vc(18.35%)的两倍以上;对(DPPH·)的半数抑制浓度为0.002×103 mg/L,远优于Vc(0.236×103 mg/L). 相似文献
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ESI-MS研究N-苯甲酰基-脱氢枞胺衍生物与血管紧张肽Ⅲ的相互作用 总被引:1,自引:0,他引:1
采用电喷雾质谱法,考察了4种最新合成的N-苯甲酰基-脱氢枞胺衍生物(NBDD)——N-苯甲酰基-脱氢枞胺(NBD),N-邻氯苯甲酰基-脱氢枞胺(NClBD),N-苯甲酰基-脱氢枞胺-7-酮(NBDO),N-邻氯苯甲酰基-脱氢枞胺-7-酮(NClBDO)与具有重要生理作用的血管紧张肽Ⅲ(AngⅢ)的相互作用。结果表明,这4种化合物与AngⅢ以不同的摩尔比 (1:1,3:1,5:1)混合时,均可形成非共价复合物,并主要形成+2价复合物离子。对4种NBDD:AngⅢ为1:1的+2价复合物离子[NBDD-AngⅢ+2H]2+进行了2级质谱分析,并根据相对碰撞能的大小,比较了这4种复合物离子的稳定性。对NBDD:AngⅢ为2:1的+2价复合物离子[(NBDD)2-AngⅢ+2H]2+进行了2级和3级质谱分析,并探讨了(NBDD)2-AngⅢ复合物中NBDD分子与AngⅢ的结合方式。 相似文献
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运用高分子反应法,制备脱氢枞胺键合交联聚苯乙烯树脂,反应分三步进行:醚化反应,双键环氧化和脱氢枞胺与环氧基开环反应,探讨了每一步合成的最佳工艺条件,通过红外光谱对该功能高分子进行了结构表征,并对该合成产物进行对映体分离的初步应用。 相似文献
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Structural modification is still a popular and important route in the forest chemical field for finding novel tricyclic diterpenes with more potential bioactivities and broad bioactive spectra. In this study, a series of dehydroabietylamine derivatives containing tricyclic diterpene structures were synthesised through oxidation in the 7th position of ring B and nitrification in the 12th position of ring C using dehydroabietylamine as the starting material. Structures of the synthesised compounds were confirmed by IR, (1)H-NMR, (13)C-NMR, MS and HRMS. The cytotoxicities of these compounds against PC-3 (human prostate carcinoma cell line) and Hey-1B (human ovarian carcinoma cell line) cells by the MTT assay were investigated. The results showed that the presence of a nitro group at 12th position and a carbonyl group at 7th position resulted in an increase of cytotoxic activity. Our findings present more evidence, showing the relationship between the chemical structure and biological function. 相似文献
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Three kinds of O,O-diethyl N-dehydroabietic aminoarylmethylphosphonates were synthesized from natural product derivatives by two steps of solvent-free reactions through imines intermediates and their structures were characterized by IR, (1)H NMR and (31)P NMR spectroscopy. The solvent-free reactions afforded good yields of N-dehydroabietic imines and alpha-aminophosphonates although the strong space block of dehydroabietylamine to amino group. The green approaches resulted negligible waste and the reactions were environment friendly without using noxious solvents. 相似文献
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CHAI Xiang-Dong CHEN Si-Guang ZHOU Yong-Liang ZHAO Ying-Ying LI Tie-JinDepartment of Chemistry Jilin University Changchun Jilin ChinaLEHN Jean-MarieChimie des Interactions Moleculaires College de France Place Marcelin Berthelot Paris France 《中国化学》1995,13(5):385-390
Molecular recognition mechanism was introduced into the monolayer formation of two barbituric derivatives, B1 and B2, on a series of melamine derivatives containing water sub-phase. The recognition pattern was found that each barbituric(or melamine) group forms 3-fold H-bonds on its two edges, respectively, with two of its neighboring melamine(barbituric) cores in the ratio of 1:1 on air-water interface. The area per molecule in this pattern is about 60-65 A2 for both Bl and B2. Such recognition improves the monolayer formation of Bl by increasing the collapse pressure around 20 mN/M and modulates the intermolecular distance of B2 in monolayer. These effects should be quite meaningful for both theoretical research and practical application of Langmuir-Blodgett films, especially. 相似文献
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右旋脱氢松香酸降解胺的合成 总被引:17,自引:0,他引:17
报道了手性试剂右旋脱氢松香酸降解胺的合成,利用工业歧化松香,精制出脱氢松香酸,以此为原料,制备脱氢松香酰氯,再通过Curitus反应,得到右旋脱氢松香酸降解胺。 相似文献