羟基苯甲酸

Resorcin salicylic acid 2,2＇, 4-trihydroxybenzophenone ultraviolet absorbent

间苯二酚邻羟基苯甲酸 2，2'，4-三羟基二苯甲酮紫外线吸收剂

The ultraviolet absorbent 2,2′,4-trihydroxybenzophenone was prepared from resorcin ,salicylic acid and phosphorus oxychloride in solvent medium sulfolanc using zinc chloride anhydrous as catalyst.

以间苯二酚、邻羟基苯甲酸和三氯氧磷为原料，环丁砜为溶剂，无水氯化锌为催化剂，合成了紫外线吸收剂2，2′，4-三羟基二苯甲酮。

Sixteen compounds were separated from 80% ethanol extract of Plant A, they were:-lariciresinol,-isolariciresinol,-isolariciresinol 9-O-β-D-glucopyranoside, tanegoside B, apiginin, apigenin 7-O-β-D-glucoside, apigenin 7-O-β-neospheroside, quercetin 3-O-β-D-glucopyranoside, 1, 7-dihydroxy-3, 4-dimethoxyxanthone, 3-O- [α-L-rhamnopyranosyl (1-4 ] -β-D-glucopyranoside-(25S)-5β-spirostan-3β-ol , 3β-O-D-glucopyranoside quinovic acid, mangiferin , 3'-p-hydroxybenzoyl-mangiferin, physcion, benzenyl methanol β-D-glucopyranoside and Vanillic acid.

结果： 1。从植物A的80％乙醇提取物中共分离得到16个化合物，分别为：-落叶松脂醇、-异落叶松脂醇、异落叶松脂醇9-O-β-D-吡喃葡萄糖苷、tanegoside B、芹菜素、芹菜素7-O-β-葡萄糖苷、芹菜素7-O-β-新橙皮糖苷、槲皮素3-O-β-D-吡喃葡萄糖苷、1，7-二羟基-3，4-二甲氧基-口山酮、菝葜皂苷元-3-O-[α-L-吡喃鼠李糖基（1-4）]-β-D-吡喃葡萄糖苷、喹诺酸3β-O-D-葡萄糖苷、知母宁、3′-对羟基苯甲酸-知母宁、大黄素甲醚、苯甲醇-β-D-吡喃葡萄糖苷、香草酸。

The main metabolites in each reactor were detected by UV/VIS, infrared and high performance liquid chromatography and mass spectrometry. Probably, the mother dye molecule facultatively hydrolyzed to produce 1-NH2-2-hydroxy anthraquinon, OH-substituted anthraquinon and 3,4-dihydroxy-benzonic acid.

对各反应器中主要的代谢产物分别进行紫外-可见、红外和高效液相色-质联谱仪检测分析后发现，母体染料经兼氧水解首先生成1-氨基-2-羟基蒽醌以及还原态的—OH基取代蒽醌隐色体，进一步水解生成3，4-二羟基苯甲酸。

Results:From the extraction of 95% in the green peel of Juglans Mandshurica,we got five compounds,which were respectively:β-sitosterol;juglone;3,5-dimethoxy-4-hydroxybenzoic acid;regiolon;succinic acid 4-oxyethyl-5-hydroxide-β-tetralone;...

结果：从核桃楸的乙醇提取物中分离鉴定了5个化合物，分别是：β-谷甾醇；胡桃醌；3， 5-二甲氧基-4-羟基苯甲酸；regiolon；琥珀酸；4-乙氧基-5-羟基-β-四氢萘酮；胡桃酮。结论：化合物Ⅲ、Ⅶ、Ⅵ为首次从核桃楸青皮中分离得到，Ⅶ、Ⅵ为新的天然化合物。

Results: Nine compounds were obtained from the ethyl acetate fraction of C. speciosa and were identified as methyl chlorogenate, 5-O-cafeoyl quinic acid butyl ester, quinic acid butyl ester, 5-hydroxymethyl-furan-2-carbaldehyde, triacontanoic acid,-epicatichin, 7,8-dihydroxy-coumanrin, protocatechuic acid ethyl ester, and protocatechuic acid.

结果：从皱皮木瓜的乙酸乙酯萃取部位分离鉴定了9种化合物，分别为绿原酸甲酯，5-O-咖啡酰基－奎宁酸丁酯，奎宁酸丁酯，5-羟甲基－2-糠醛，三十烷酸，-表儿茶素，7，8-二羟基香豆素，3，4-二羟基苯甲酸乙酯，原儿茶酸。

Among them, p-coumaric acid, cis-aconitic acid, vanillic acid, citric acid were well known antiinflammation active components.

已知对羟基桂皮酸、顺式乌头酸、对羟基苯甲酸、香草酸、柠檬酸具有抗炎活性。

Characteristics: According to the principle of forming acnes and furuncles, the product which contains oil-controlling genes, can quickly remove the bacteria on the surface of furuncles and get rid of remaining oil and dirt by soaking into the skin deeply.

主要成份：鲸蜡醇、硬脂醇、对羟基苯甲酯丙二醇、对羟基苯甲酸丁酯等。产品特性：针对痤疮、暗疮的形成原理，采用控油因子，迅速清除痤疮表面细菌，并渗透至肌肤深层，排出残余油脂和污物。

A series of p hydroxybenzoic acid oligomers were synthesized of p acetoxybenzoic acid (4 ABA). Since the oligomers are insoluble in most organic solvent, we tried to analyze the degree of polymerization of the oligomers half stoichiometricly by the FT IR method.

用对乙酰氧基苯甲酸合成了一系列对羟基苯甲酸的齐聚物，由于这些齐聚物不溶于大部分有机溶剂，因此尝试用傅立叶红外谱半定量地分析齐聚物的聚合度。

Most sugars, organic acids, phenolic acids and most amino acids increased significantly with elevated CO_2. The treatment, 950±50μmol·mol-1 CO_2 enrichment for 6 h every day had more obvious effects than the treatment, 950±50μmol·mol-1 CO_2 enrichment for 3 h every day. Levan, sucrose, arginine, oxalic acid, alanine, malic acid, acetic acid, lactic acid cinnamic acid,ρ- hydroxybenzoic acid and benzoic acid increased significantly.

CO_2施肥黄瓜根系分泌有机酸、氨基酸、糖和酚酸的总量增加，上、下午均施肥的处理分泌数量最多；CO_2施肥显著促进了果聚糖、蔗糖、草酸、苹果酸、乙酸、乳酸、多数氨基酸、肉桂酸、对羟基苯甲酸和苯甲酸等组分的分泌；单位鲜重根系分泌糖和酚酸的数量增加，多数氨基酸保持不变或降低，但有机酸分泌规律不一致。

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。