二酰脲

Methoxycarbonyl-4-(4-methoxyphenyl )-6-methyl-3, 4-dihydropyrimidine-2(1H)-one was synthesized from anisaldehyde, methyl acetoactate and urea in presence of HF-1O1 strong acidic ion-exchange membrane.

在HF-101强酸性离子交换膜的存在下，由对羟基苯甲醛、乙酰乙酸甲酯与脲一步合成了5－甲氧羰基－4－（4－甲氧苯基）－6－甲基－3，4－二氢嘧啶－2(1H)－酮。

In this thesis, a series of benzamides and thioureas derivatives have been designed and prepared. By reasonable photoreaction conditions, a series of benzophenone and quinazoline compounds have been synthesized and structurally determined by NMR, MS and X-ray crystallography, respectively.

本文设计并合成了一系列苯甲酰胺和硫脲衍生物，通过选择合理的光反应条件，合成了一系列二苯甲酮和喹唑啉类化合物，应用核磁、质谱以及X-射线衍射技术对这些化合物的结构进行表征。

Objective: To explore the effects of 1-4 -[2 -( 1- ethyl - 2,3 – dioxopiperazine-4- carboxamido ethyl] -phenylsulfonyl -3 -cyclohexyl urea on the fasting blood glucose and the blood lipemia in the streptozotocin -induced diabetic once and the glucose uptake in SMMC7721 cells.

目的：研究观察二氧代哌嗪苯磺酰环己脉对链脲佐菌素诱导的2型糖尿病小鼠血糖血脂的影响以及刺激SMMC7721细胞对3H-2-脱氧葡萄糖吸收影响。

We establish a microtechnique developed from cytochrome C spreading methods allowing the detection of minimal amounts of DNA through a calibrated composition of buffer、denaturing agents and cytochrome C in an extremely small volume of spreading mixture.

将变性剂脲、乙二醛、甲酰胺引入展开过程，我们在国内首次建立了可检测1×10〓--2×10〓ug以下量DNA样本的微量展层技术，能较好地展开dsDNA及ssDNA分子，DNA形态及长度与经典技术所制样本相似。

Nine kinds of compounds are synthesized with NTO〓, PA〓, TNR〓'used as acid radical, and CHZ, SCZ·HCl, AG·H〓CP〓 served as the materials. Among them eight kinds of compounds have been never reported in the literature and one has been prepared at home for the first time. The structures of these compounds are characterized by using the element analysis and the FT-IR measurements.

以3-硝基-1，2，4-三唑-5-酮离子、2，4，6-三硝基苯酚离子、2，4，6-三硝基间苯二酚离子为酸根，以碳酰肼、盐酸氨基脲、氨基胍重碳酸盐为原料合成富氮化合物，得到了8种未见文献报道的新富氮化合物，另有1种是国内首次合成的新型富氮化合物。

Eighty new Schiff bases of triazole, tetrazole and thiodiazole have been synthesized.

合成了40个新的含三唑、四唑和噻二唑的芳酰基脲类化合物。

A flame retarding and smoke suppressing agent polyphosphoric cyanamine urea was prepared with phosphoric acid,melamine and urea as the raw materials.

以磷酸、三聚氰胺、尿素为原料制备阻燃抑烟剂聚磷酰氰胺脲，然后将其应用于TDE-85#环氧树脂中，以顺丁烯二酸酐为固化剂制备了阻燃抑烟环氧树脂。

Two novel pyrazolone derivatives 2-ethylamino-6H-5-(1-phenyl-3-methyl/phenyl-5-pyrazolone-4-ylene)-1,3,4-thiadiazine (PMCP-ETSC/DPCP-ETSC) containing NNS six-membered heterocycles were synthesized by the condensation reaction of 1-phenyl-3-methyl/phenyl-4-chloroacetyl-pyrazolone-5 with 4-ethyithiosemicarbazide. The title compounds were characterized by elemental analysis, IR, 1H NMR, 13C NMR and single-crystal X-ray diffraction.

利用1-苯基－3-甲基／苯基－4-氯乙酰基－吡唑啉酮－5与4-乙基氨基硫脲发生缩合反应，生成了2个新的双杂环化合物2-乙氨基－6H-5-（1-苯基－3-甲基／苯基－5-吡唑啉酮－4-基）－1，3，4-噻二嗪(PMCP-ETSC/DPCP-ETSC)，并对其进行元素分析、红外光谱、核磁共振表征和晶体结构分析。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。