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In some cases, its epimer 4 was also obtained. 22 compounds were synthesized, among them 18 were new.3. Using the intramolecular Pictet-Spengler reaction to form the pentacyclic skeleton of Et-743, the byproducts 25 were obtained under various conditions. The structures of them were determined to be 1, 2-dihydro-isoquinoline compounds, and the mechanism of the reaction was proposed.B. The synthesis of the analogs of Et-743Because of the failure of removing the protective groups in compounds 14, the synthetic strategy was adjusted.

对于苄基保护的羟基化合物13a,顺利得到化合物30,然后与不同的羧酸反应得到18个酯化合物33-50;对于苄氧羰基保护的氨基化合物13b,由于脱除保护基的化合物31在空气中不稳定,所以我们采取不经分离纯化,直接与羧酸反应得到酰胺化合物53-62,然后再分别对其C-21位的羰基进行还原氰基化,得到10个酰胺目标化合物63-72,另外,我们还对羟基转化为氨基的反应进行了探索。3。

Urinary microalbumin was determined with immunoturbidimetry, urinary NacetylD-glucosaminidase,βDgalactosidase(GAL and glycyl proline dipeptidyl aminopeptidase were determined with rate, urinary creatinine was determined with Jaffe rate.

对127例糖尿病患者,采用免疫透射比浊法检测尿mA,速率法检测N乙酰βD氨基葡萄糖苷酶、βD半乳糖苷酶、甘氨酰脯氨酸二肽氨基肽酶,Jaffe速率法测尿肌酐。

Both the protection and deprotective group methods for the amino-group on side chain of a new N-pivot lariat crown ether were studied comparatively.

研究了一种新的氮支套素冠醚侧链上氨基的保护和脱保护基方法,结果表明,由过量乙二胺与对甲苯磺酰氯反应得到的单保护乙二胺(N-对甲苯磺酰基乙二胺4a),经N-烷基化环化反应,然后在氢化铝锂存在下脱除保护基,即可制得最佳产率的N-(2-氨基已基)单氮杂-12-冠-4(1)。

In order to obtained the six-membered ring compound and a thorough assignment of the spectra, and further to prove that the six-membered ring compound was formed from the hydrogen transfer, the compound N-butyl-4-(N-methylphenylamino)-5-amino- 1, 8-naphthalimide 6 was designed to obtained with N-butyl-4-bromo-5-amino-1, 8-naphthalimide and N-methyl phenylamine as the starting material. However it was difficult to obtain the desired product as the different solvent giving the different products except the desired product.

为了能够得到六元环化合物作为定标的物质及其确切的谱图分析结果,并且为了进一步证明由五元环产物通过氢转移得到六元环产物的正确性,设计用N-丁基4-溴-5-氨基-1,8-萘酰亚胺与N-甲基苯胺反应生成N-丁基-4--5-氨基-1,8-萘酰亚胺6,结果发现这种方法很难实现,选择不同的溶剂会生成不同的产物,却都不是目标产物。

Similarly, IVB〓 reacted with carboxylic acids in DCC/DMAP/DCM system to produce ten new 5-IVB〓 esters in 66-82% yield. AVB〓 or IVB〓 also reacted with carbamino chloride or phosphoryl chloride in IM/DMAP system to produce eight corresponding carbamates or phosphorylates in good yields.

阿维菌素B〓与氨基甲酰氯反应,合成了2个5-AVB〓氨基甲酸酯衍生物:阿维菌素B〓与膦酰氯反应,合成2个5-AVB〓膦酸酯衍生物;并改进了阿维菌素与酰氯的反应条件,缩短了反应时间,提高了产率和反应的选择性。

Through condensing o-aminobenzoic acid, ethyl oxalyl chloride and ethylenediamine(or 1,2-propylenediamine), two new ligands N-benzoato-N′-(2- aminoethyl)oxamido(H3oxbe) and N-benzoato-N-(2-amino-2-methylethyl)oxamido(H3oxbt) have been synthesized. Their mononuclear complexes Na·1.5H2O and Na·1.5H2O have also been obtained.

2以邻氨基苯甲酸、草酸乙酯酰氯和乙二胺(或1,2-丙二胺)缩合制得了两种具有不对称草酰胺结构配体N-(2-苯甲酰基)-N&-(2-氨乙基)草酰胺(H3oxbe)和N-(2-苯甲酰基)-N&-(2-氨丙基)草酰胺(H3oxbt),并得到了它们的单核配合物:Na·1.5H2O和Na·1.5H2O。

In order to decrease toxicities of retinods and enhance pharmacal effects and gain the relative derivatives with better curing effect and selectivity, structures of retinoic acids were modified by inducing glycosyl groups in this paper.

方法一是在氢氧化钾存在下,以4-二甲氨基吡啶做相转移催化剂,将溴代-O-乙酰基葡萄糖(5a)、溴代-O-乙酰基木糖(5b)、溴代-O-乙酰基乳糖(5c)和溴代-O-乙酰基麦芽糖(5d)分别与异维A酸反应制得1-O-异维A酰-乙酰基单糖(6a,6b)和1-O-异维A酰-乙酰基二糖(6c,6d),收率为53~65%。

A novel fluorescent acrylamide monomer, N-(4-Benzooxazol-2-yl-phenyl)- acrylamide, was prepared from o-aminophenol, p-aminobenzoic acid and acryloyl chloride, with polyphosphoric acid as dehydrating agent and triethylamine as deacidification agent.

以邻氨基苯酚、对氨基苯甲酸和丙烯酰氯为原料,以多聚磷酸为脱水剂、三乙胺为脱酸剂,研制了一种新的荧光丙烯酰胺单体N-[4-(苯并噁唑-2-)苯基]丙烯酰胺。

Bezaldehyde was used as protective agent in first method.S-Epichloeohydrin was aminated and acidulated to give(2S)-1-Amino-3-chloro-propanol Salts.The acetylation of (2S)-1-Amino-3-chloro-propanol by acetic anhydride produced the intermediate-N-[2--3-chloropropyl]acetamide.And then at 20℃,in the presence of lithium tert-butoxide,benzyl 3-fluoro-4-morpholinophenyl carbamate react with-N-[2--3-chloropropyl]acetamide to give linezolid in total yield of 43.6%.

路线一采用苯甲醛作保护剂,使S-环氧氯丙烷氨解、酸化生成S-1-氨基-3-氯-2-丙醇盐酸盐,然后经乙酰化反应后,生成中间体-N-[2-乙酰氧基-3-氯丙基]乙酰胺,再用N-(3-氟-4-吗啉苯基)氨基甲酸苄酯和中间体在催化剂叔丁醇锂存在下25℃反应生成利奈唑酮,总产率达到43.6%。

Synthesis and structural characterization of novel cycioplatinated complexes with 2-aryl imidazolines 2-arylimidazoline ligands 2a-2d were synthesized from benzoyl chloride or p-methoxybenzoyl chloride with aminoethanol or valinol and 2e was synthesized from 2-phenylimidazoline.

新型2-芳基咪唑啉环铂化合物的合成与结构表征以苯甲酰氯或4-甲氧基苯甲酰氯和氨基醇(2-氨基乙醇或外消旋的缬氨基醇)为原料,合成了四种2-芳基咪唑啉配体2a-2d,以2-苯基咪唑啉为原料合成了配体2e,其中2d为新化合物。

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The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

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