哌啶

Described in chapter 3 is the immediate application of the Clemmensen reductive rearrangement reaction to the polycyclic system as illustrated in a elaboration of the 5-6-7 tricyclie core skeleton of Stemona alkaloids in 5 steps: N-alkylation, [3, 2] -sigmatropic rearrangement, Dieckmann condensation, oxidative cyclization, reductive rearrangement, starting from ethyl pipecolinate hydrochloride.

我们以哌啶酸乙酯为起始原料，经氮烷基化，[3，2]-σ重排，Dieckmann缩合，自由基环化，6-6-6元环系到5-6-7元环系的还原重排五步反应，高收率地构筑了百部生物碱的5-6-7氮杂三环骨架，并用X射线晶体衍射法确定了其结构。

The combination effect of hindered amine light stabilizers PDS copolymer of 2,2,6,6 tetramethyl 4 piperidinyl methacrylate(TMPM with styrene with several kinds of antioxidant in polypropylene under γ irradiation was studied in this article.

研究了受阻胺光稳定剂 PDS4-(甲基丙烯酸- 2 ，2 ，6 ，6 -四甲基哌啶醇酯和苯乙烯的共聚物与几种类型抗氧剂在γ-辐射下在聚丙烯中的并用效应。

Phenothiazines were also oxidized byiodine and 2, 2, 6, 6- tetramethyl - 4 - acetyloxypiperidineoxoammonium hexachloroantimonate to radical cations in the cavityof β-cyclodextrins in aqueous solution.

以吩噻嗪衍生物为底物，2，2，6，6-四甲基-4-乙酰氧基哌啶氧铵六氯锑酸盐、碘为氧化剂，二者在水相中β-环糊精腔内发生了单电子转移反应，产生了吩噻嗪衍生物正离子自由基。

Piperidine oxoammonium salts oxidize aromatic amines and N, S-containing heterocycles to the corresponding radical cations, and the isotope effects in electron transfer reactions between thianthrene and N-methylphenothiazine radical cations and their respective neutral parent molecules have been reported for the first time.

哌啶氧铵盐氧化芳香胺和含氮、硫芳杂环为相应的自由基正离子，首次报道了噻蒽及甲基吩噻嗪自由基正离子与其中性母体之间电子转移的同位素效应。

Sixty patients with Tourette syndrome were randomly divided into risperidone group and haloperidol group to treat for six weeks.

60例Tourette综合征患者分为两组，每组30例，分别给予利培酮和氟哌啶醇治疗。

Pomalidomide is a new IMiD with high in vitro potency.

3-氨基-N-(2，6-二氧代-3-哌啶基)邻苯二甲酰亚胺是一种体外高效力的新型IMiD。

Objective: To study the mechanism of N-n-butyl halopefidol iodide（ F2 ）attenuating myocardial ischemiareperfusion injury in rats.

目的：探讨碘化N-正丁基氟哌啶醇（F2）减轻大鼠心肌缺血再灌注损伤的分子生物学机制。

Methods Ninety ASA Ⅰ~Ⅱ patients undergoing UPPP surgery were randomly divided into three groups: F group (fentanyl 10 μg/kg), FL group (fentanyl 5 μg/kg + lornoxicam 0.4 mg/kg), or TL group (tramadol 5 mg/kg + lornoxicam 0.4 mg/kg). The drugs were diluted with normal saline to 100 mL (background 2 mL/h, PCIA bolos 1.5 mL, lockout time 15 min).

90例择期行UPPP的阻塞性睡眠呼吸暂停综合征（obstructive sleep apnea， syndrome， OSAS，即鼾症）患者，ASAⅠ~Ⅱ级，随机分为3组(n=30)，F组：芬太尼10μg/kg；FL组：芬太尼5μg/kg+氯诺昔康0.4mg/kg；TL组：曲马多5mg/kg+氯诺昔康0.4mg/kg；每组镇吐药物均为氟哌啶5mg，均以生理盐水稀释至100mL，背景剂量2mL/h，PCIA1.5 mL/次，锁定时间15min。

Objective:To discuss the compound doxylateiphen poising and first aid care experience.

目的：讨论复方苯乙哌啶中毒的急救措施和护理体会。

TANG Zi-long SONG Shi-zhe (Department of Materials, Tianjin University, Tianjin 300072)GUO Ying-kai (Tianjin Professional College, Tianjin 300402)Abstract : The corrosion behavior of type 304 stainless steel and industrially pure iron, chromium, nickel in 1.0mol/L HC1 and their corrosion inhibition by piperidine were investigated by atomic absorption spectrometry, current vs time relation at constant potential and polarization curve measurements.

采用原子吸收光谱，恒电位下电流～时间关系和极化曲线测试等方法研究了304不锈钢、纯铁、铬和镍四种材料在0.1mol/L HCl中的腐蚀行为及哌啶的缓蚀作用。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。