二羟基苯

Dihydroxy-7, 4′-dimethoxy-dihydrflavonol and -3, 5, 7 -trihydroxy-4′-methoxy- dihydrflavonol were synthesized by selective protection, condensation, epoxidation, cyclization and deprotection from 2, 4, 6-trihydroxyacetophone and anisaldehyde.

以2，4，6-三羟基苯乙酮和茴香醛为起始原料，经选择性保护、缩合、环氧化、关环等步骤首次完成了-3，5-二羟基-7，4′-二甲氧基二氢黄酮醇和-3，5，7-三羟基-4′-甲氧基二氢黄酮醇全合成。

A series of novel dendrons with 1,3,5-triazine structure were synthesized by convergent strategy using cyanuric chloride, p-hydroxyazobenzene,β-naphthol, 1-hydroxyanthraquinone, 3,5-dihydroxybenzyl. They were the first generation p-phenyl-azo-phenyloxy-terminated dendron G1.0, the first generation naphthyloxy-terminated dendron G1.0, the first generation naphthyloxy-terminated and 1-anthraquinonoxy-cored dendron G, and the second generation naphthyloxy-terminated dendron G2.0.

以对羟基偶氮苯、β-萘酚为端基，三聚氯氰、3，5-二羟基苄醇为支化单体，1-羟基蒽醌为核心，用收敛法合成了一系列新型结构的含均三嗪环的树枝块：第一代端基为偶氮苯的树枝块G1.0、端基为萘氧基的树枝块G1.0、端基为萘氧基、中心为蒽醌的树枝块G、第二代端基为萘氧基的树枝块G2.0。

It includes the following steps: polymerizing 2, 4-dihydroxyl metaphenylene diamine hydrochloride, diamine monomer and dipic acid anhydride to gain the polyimide that contains hydroxy on the molecule chain, making the hydroxyl take esterification reacting with acyl chloride and acrylic acid to gain polyimide photosensitive material that has negative photonasty.

该聚酰亚胺光敏材料以2，4-二羟基间苯二胺盐酸盐，二胺单体和二酸酐为原料进行聚合，得到分子链上含羟基的聚酰亚胺，然后使羟基与丙烯酸及其衍生物的酰氯发生酯化反应，得到具有负性感光性能的聚酰亚胺光敏材料。

Furthermore, influences of different phosphate salts at various concentrations on the ionization efficiency of phosphopeptide were investigated systematically, finding that the signal intensity for phosphopeptide 48FQEEQQQTEDELQDK63 digested from β-casein were 5 to 8 times increased in an optimized condition with 10 mmol/L ammonium monobasic phosphate or 3 to 4 times increased with 10 mmol/L ammonium dibasic phosphate as additive to matrix 2,5-dihydroxybenzoic acid, respectively.

考察了两种适合于磷酸化肽离子化的基质类型2，5-二羟基苯甲酸和2，4，6-三羟基苯乙酮。用2，5-二羟基苯甲酸作为基质时，当加入10 mM 磷酸氢二铵时，磷酸化蛋白质β-casein的磷酸肽 48FQEEQQQTEDELQDK63的离子化效率可以增强5-8倍，当加入10 mM磷酸二氢胺时，磷酸肽的离子化效率可以增强3-4倍。

Evaluation of some Mannich bases of conjugated styryl ketones and related compounds versus the WiDr colon cancer in vitro.

朱志宏，徐秀娟。2，4-二羟基-3-芳氨基甲基苯乙酮和8-乙酰基-3-芳基-3，4-二氢-5-羟基-2H-1，3-苯并噁嗪的合成及其相互转化。

The compound of BNTMBP wassynthesized by the condensation reaction between 4-chloronitrobenzene (4CNB) and 4, 4'-dihydroxy-3, 3', 5, 5'-tetramethyl biphenyl in the presence of potassium carbonate in the mixture solvents of N, N-dimethylformamide and tolune.

4， 4'-二羟基－3， 3'， 5， 5'-四甲基联苯、4-氯硝基苯(4CNB)和碳酸钾在N， N-二甲基甲酰胺和甲苯的混合溶剂体系中回流反应，合成得到了4， 4'-双（4-硝基苯氧基）－3， 3'， 5， 5'-四甲基联苯；随后，在Pd/C-水合肼的还原体系中，被进一步还原，得到了4， 4'-双（4-氨基苯氧基）－3， 3'， 5， 5'-四甲基联苯。

Results Eleven compounds were obtained and identified as sarcodonin A, scabronine B, 3β-hydroxy-5α, 8a-epidioxyergosta-6, 22-dien,(22E, 24R)-ergosta-7, 22-diene-3β, 5α, 6β-triol,(22E, 24R)-ergosta-7, 22-diene-3β-ol, benzoic acid, 4-hydroxylben-zaldehyde, 4-monopropanoylbenzenediol, ethy1-β-D-glucopyranoside, thioacetic anhydride,(2S, 2'R, 3S, 4R)-2-(2-hydroxyoctadecanoylamino) docosane-1, 3, 4-triol.

结果共分离鉴定了11个化合物，分别是：sarcodonin A、scabronine B、3β羟－5α，5α-过氧麦角甾－6，22-二烯－3β-醇、(22E，24R)-麦角甾－7，22-二烯－3β，5α，6β三醇、(22E，24R)-麦角甾－7，22-二烯－3β-醇、苯甲酸、对羟基苯甲醛、对羟基苯甲酸乙酯、乙基－β-D-吡喃葡萄糖苷、硫代乙酸酐、（25，2'R，3S，4R）-2-（2-羟基－十八碳酰胺）二十二碳烷－l，3，4-三醇。

The experiment consist of two parts :the first one research nucleophilic addition of m-dinitrobenzene, nucleophilic reagent is benzyl cyanide; the second one synthesize 2,4-dihydorxybenzophenone from 2,4-dichlorobenzophenone and NaOH.

实验分为两部分：第一部分研究了间二硝基苯的亲核加成反应，亲核试剂为苄基腈；第二部分是用2，4-二氯二苯甲酮与氢氧化钠反应制备2，4-二羟基二苯甲酮。

By utilizing three benezenemulticarboxylate derivatives (H2chdc, H2aip, NaH2sip), we obtain 12 coordination polymers. Especially, compelexes 1 and 2 are based on one-dimensional ···OHInOHIn···chains as building units, while complex 3 is based on double four-ring [In8(μ2-O)4(μ2-H2O)8]16+, complex 4 is based on trinuclear In3(μ3-O)(CO2)6, complexes 11 and 12 are both based on nested bistranded helices.

选择了三类取代苯羧酸配体： 2，5-二羟基-1，4-对苯二甲酸(2，5-H2chdc)； 5-氨基间苯二甲酸(5-H2aip)； 5-磺酸基间苯二甲酸钠盐(5-NaH2sip)和InCl3反应合成了十二个配位化合物：其中1、2以···OHInOHIn···链为构筑单元， 3以双四元环[In8(μ2-O)4(μ2-H2O)8]16+为构筑单元，4以棱柱状三核铟In3(μ3-O)(CO2)6为构筑单元，而11、12以嵌套的双股螺旋链为构筑单元。

In these components, 2-methyl-1-propanol, ethyl acetate, 3-methyl-1- propanol, 2,3-butanediol, phenylethyl alcohol, butanedioic acid diethyl ester, ethyl hydrogen succinate, 2-hydroxy-ethyl propanoic acid and 4-hydroxy-benzeneethanol were main aroma components, these volatile componds provided the typical sensory style of wine.

其中，2-甲基-1-丙醇、乙酸乙酯、3-甲基-1-丙醇、2，3-丁二醇、2-羟基丙酸乙酯、苯乙醇、丁二酸二乙酯、乙基-氢化琥珀酸和4-羟基苯甲醇等成分构成了葡萄酒的主体香气，这些主体香气与其他风味成分一起构成葡萄酒的典型风味特征。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。