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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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以L-α-氨基酸为起始原料,经酯化、氨基保护、肼解制得N-对甲苯磺酰基-L—α-氨基酸酰肼2,再与糖基异硫氰酸酯3~5反应,得到9种新型N-糖基-N'-酰氨基硫脲6~8,然后在Hg(OAc)2/EtOH条件下关环,合成了一系列新的2-对甲苯磺酰氨基烃基-5-糖氨基-1,3,4-噁二唑类化合物9~11.所有新化合物的结构均经IR,^1H NMR,MS谱和元素分析确证. 相似文献
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《有机化学》2015,(10)
以鸟苷(1)为原料,与乙酸酐经过糖环羟基保护反应,得到2',3',5'-三-O-乙酰基鸟苷(2);2与对甲苯磺酰氯反应,得到9-(2',3',5'-三-O-乙酰基-β-D-呋喃核糖)-2-氨基-6-对甲苯磺酰氧基嘌呤(3);3与亚硝酸异戊酯和二乙基二硫醚反应,得到9-(2',3',5'-三-O-乙酰基-β-D-呋喃核糖)-6-对甲苯磺酰氧基-2-乙硫基嘌呤(4);4经过胺解和脱糖环羟基保护反应得到10个未见报道的6-烷氨基-2-乙硫基嘌呤核苷化合物(5).化合物结构经1H NMR、13C NMR、IR和HRMS进行了表征,并对它们进行了抗血小板聚集活性测试,结果表明对抗血小板聚集显示一定的活性. 相似文献
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含1,2,4-三唑和1,3,4-噁二唑硫醚类化合物的合成及结构表征 总被引:2,自引:0,他引:2
在KOH溶液中,芳甲酰肼(2)与CS2生成钾盐3;然后3在水合肼作用下经过环化、取代、肼解得3-巯基-4-氨基-5-苯基-4H-1,2,4-三唑-乙酸酰肼(6),6再与CS2回流成环生成化合物5-(4-氨基-5-苯基-4H-1,2,4-三唑-3-硫烷基)-1,3,4-噁二唑-2-硫醇(7),最后7与取代苄基氯反应得目标化合物A1~A6,与芳基甲醛反应得终产物B1~B15.目标化合物的结构均经1H NMR,13C NMR,IR,MS或HRMS确证结构. 相似文献
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乙酰羟基酸合成酶(Acetohydroxyacid synthase,AHAS,EC 4.1.3.18)是植物和微生物中亮氨酸、异亮氨酸和缬氨酸合成途径的一个关键酶,以AHAS为靶标的磺酰脲类除草剂具有高效、高选择性和对环境友好的特点.通过2-氨基-4-甲基嘧啶溴代反应以及进一步的衍生、磺酰基异氰酸酯的胺解,合成了一系列含有5-溴嘧啶基的新磺酰脲.其结构经1H NMR、质谱和元素分析确定.生物活性测试表明目标化合物在离体水平对大肠杆菌乙酰羟基酸合成酶同工酶AHASⅡ表现出了与市售除草剂苯磺隆相当甚至更优的抑制活性,而盆栽除草活性低于苯磺隆. 相似文献
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含有甘氨酸的Keggin型杂多蓝的合成和抗艾滋病毒(HIV-1)活性研究 总被引:10,自引:0,他引:10
采用控制电位电解方法,制得8种含有甘氨酸的Keggin型钨系杂多蓝配合物.通过IR,UV-vis,^H NMR,^183W NMR,XPS等方法对其结构进行了表征.这类化合物具有较强的抗碱解能力.在MT4细胞内,对合成化合物进行了抗艾滋病毒(HIV-1)活性及毒性测定,发现该类化合物的抗艾滋病毒(HIV-1)活性随着还原电子数增多有增强的趋势,其中含有甘氨酸的十二钨锗酸4电子杂多蓝(代号HPBG-110)有较高的治疗指数(TI).初步的试验结果表明:该类化合物的抗HIV-1活性作用是在病毒感染早期,通过抑制艾滋病毒(HIV-1)在靶细胞表面吸附而发挥作用的. 相似文献
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ZHANG Shuai ZHENG Ziqi ZHANG Tong FU Xue SHI Shaojia JIANG Lin YIN Hongzong 《高等学校化学研究》2018,34(4):559-563
Pyrroloindoles, as a kind of promising small-melecular hole injetion materials, have attracted wide attention. Herein, we described a simple metal-free method for the synthesis of 4,8-dihydropyrrolo[2,3-f]indole compounds through the acid-catalyzed dimerization reaction of pyrroles. The structures of target 4,8-dihydropyrrolo-[2,3-f]indoles were confirmed by NMR spectrum and X-ray single crystal diffraction. Notably, pyrrole substrates were synthesized conveniently starting from available biological dipeptides. cis-Configuration was preferred when bulky p-toluene sulfonic acid(TsOH) was employed. Excessive aicds empoyed in dimerization would lead to the formation of quantitative pyrrolium chloride intermediate, restraining further conversion to target compounds. Furthermore, the dimerization process was monitored by 1H NMR spectrum, proving that it followed a second-order kinetics, providing significant insight to the mechanism of dimerization reaction. 相似文献
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Insights into the Crystallization and Structural Evolution of Glycine Dihydrate by In Situ Solid‐State NMR Spectroscopy 下载免费PDF全文
Dr. Paolo Cerreia Vioglio Dr. Giulia Mollica Marie Juramy Dr. Colan E. Hughes Dr. P. Andrew Williams Dr. Fabio Ziarelli Prof. Stéphane Viel Dr. Pierre Thureau Prof. Kenneth D. M. Harris 《Angewandte Chemie (International ed. in English)》2018,57(22):6619-6623
In situ solid‐state NMR spectroscopy is exploited to monitor the structural evolution of a glycine/water glass phase formed on flash cooling an aqueous solution of glycine, with a range of modern solid‐state NMR methods applied to elucidate structural properties of the solid phases present. The glycine/water glass is shown to crystallize into an intermediate phase, which then transforms to the β polymorph of glycine. Our in situ NMR results fully corroborate the identity of the intermediate crystalline phase as glycine dihydrate, which was first proposed only very recently. 相似文献
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本文合成了11种N-烃基-N-二甲基苯基硅亚甲基-2-呋喃甲酰胺化合物。合成方法简便,反应时间短。经IR、1 HNMR、13C NMR、MS和元素分析确定了它们的组成和结构。测定了它们对某些植物病原菌的杀菌活性和对植物生长的抑制作用。 相似文献
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本文合成了一系列1-(3-吡啶甲酰基)-4-芳基氨基硫脲和3-(3-吡啶基)-4-芳基-1,2,4-三唑啉-5-硫酮,研究了它们的IR、~1H NMR和MS波谱性质,并测试了这些新化合物的生物活性,发现其中大多数在低浓度能显著促进植物生长。 相似文献
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Zheng Bao Zhao Hui Xia Zheng Yuan Gui Wei Jiang Liu College of Pharmacy Shanxi Medical University Taiyuan China First Clinical College Shanxi Medical University Taiyuan China 《中国化学快报》2007,18(6):639-642
For searching a better 4-aminosalicylic acid derivative with higher activity and less side effects against the inflammatory bowel disease, 4-aminosalicylic acid (4-ASA) was protected by benzyloxycarbonyl and acetyl, respectively. The resultant was hydrogenized to remove protective group of amino group, then the product was reacted with NaNO2 to give diazonium salt, which was conjugated with salicylic acid, hydroxybenzene, TV-salicyloyl glycine acid to get azo derivatives of 4-ASA. The azo derivatives were hydrolyzed under the alkaline condition to get the target products. All compounds were characterized by FT-IR, 1H NMR, 13C NMR spectra in details. New derivatives of 4-ASA were characterized. The synthetic route was reasonable and feasible. 相似文献