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- Polyhydroxylated pyrrolidine 多羟基吡咯烷
- It mainly deals in amino acid derivatives, indole, pyrrolidine, piperidine and piperazine series. 主营:氨基酸衍生物系列,吲哚系列,吡咯烷系列、哌啶系列,哌嗪系列。
- Polyhydroxylated polybutadiene(PHPB) was synthesized, when hydroxyl terminated polybutadiene (HTPB) was epoxidized and ring opened with performic acid. 采用过氧甲酸原地法对端羟基聚丁二烯(HTPB)进行环氧化及开环,合成了多羟基聚丁二烯(PHPB)。
- In this paper the various methods of forming pyrrole, dihydropyrrole and pyrrolidine compounds were reviewed. 根据母环氧化状态的不同,吡咯衍生物单体可分为吡咯、二氢吡咯以及四氢吡咯等三类化合物。
- Briefly investigated the effect of different active component on synthesizing pyrrolidine. 简要考察了不同活性组分对合成四氢吡咯的影响。
- Recently, many polyhydroxylated sterols with different biological activities have been found in the soft corals,sponges,algae and star fish.Zeng L. 近年来,从软珊瑚,海绵,海藻和海星等中都发现不少有生理活性的多羟基甾醇。
- On investigation of the soft coral Sarcophyton digitatum for the first time a new polyhydroxylated sterol S-D-1 was obtained. 本论文首次对指状肉芝软珊瑚(Sarcophyton digitatum)进行了化学研究,从中分离并鉴定了一个新的多羟基甾醇(S-D-1)和鲨肝醇(S-D-2)。
- Objective To investigate the role of pyrrolidine dithiocarbamate (PTDC) in intestinal ischemia /reperfusion injury. 目的:观察四氢化吡咯二硫代氨基甲酸酯(PTDC)对大鼠肠缺血再灌注后肠组织损伤的影响。
- This methodology provides an easy to use, efficient yet flexible procedure for the formation of pyrrolidine and piperidine ring containing compounds. 在研究中我们发现了一种新的孤立双键的溴代氮环化方法,并成功利用该方法进行了不对称诱导形成新的手性中心的研究。
- Polyhydroxylated polybutadiene (PHPB) was synthesized, when hydroxyl terminated polybutadiene (HTPB) was epoxidized and ring opened with performic acid. 摘要采用过氧甲酸原地法对端羟基聚丁二烯(HTPB)进行环氧化及开环,合成了多羟基聚丁二烯(PHPB)。
- Compared with the known synthetic routes for pyrrolidine derivatives, our method shows impressive efficiency and high stereoselectivity. 该方法可以同时构建三个手性中心,高度立体选择性地合成syn-anti相对构型的3-(1-羟烷基)-吡咯烷酮。
- Objective To investigate the protective effect of pyrrolidine dithiocarbamate(PDTC)on erythrocytes during canine cardiopulmonary bypass (CPB). 目的研究犬体外循环(CPB)中吡咯烷二硫氨基甲酸酯(PDTC)对红细胞的保护作用。
- The synthesis of clathrate compound in a near non-aqueous system comprising pyrrolidine and mepiquat chloride was investigated. 研究了吡咯烷与甲哌嗡复合有机近非水体系中笼形类沸石材料的合成规律。
- PU surface is m0dified with Send-inmpnetrating network systems of Polyviny pyrrolidine -polyurethaneurea with different mass rates. 采用不同质量比的聚乙烯基吡咯烷酮一聚氨酯半互穿网络体系修饰聚氨酯表面。
- A diastereoselective version for the synthesis of chiral pyrrolidine and piperidine ring containing compounds was also developed. 利用由本项目拓展的方法,我们成功全合成了生物碱石蒜碱及单萜化合物紫牡丹内酯,合成了蛙皮毒素的重要合成中间体。
- The nanosized nickel-based catalyst exhibits catalytic activity for the hydrogenation of pyrrole, pyrrolidine and pyrrolidone at normal temperature and pressure. 常温常压下纳米镍基催化剂对吡咯、吡咯烷和吡咯烷酮的加氢反应显示一定的催化活性;
- According to the types of marine organisms,polyhydroxylated sterols with different biological activities isolated recently from the marine organisms have been reviewed with 20 refs. 按不同的海洋生物分类,介绍了近年来从这些海洋生物中分离得到的具有不同生理活性的多羟基甾醇。
- The smectites interlarded with polyhydroxyl Al prepared according to the method in this paper are used as catalysts in the reaction of the de sec butylation of 2 sec butylphenol. The results are better. 用该法制备的柱撑羟基铝蒙脱石在 2 仲丁基苯酚脱丁基化反应中作催化剂 ,效果良好