Some preparation methods of galanthanime including extraction and organic synthesis were summarized, such as extraction from narcissus, galanthus woronawii losink, and lycoris radiate and countereurrent chromatography refining, and enzymatic extraction from hyacinths orientalis, as well as the organic synthesis using 3,4-dimethoxybenzaldehyde, methyl 3,4,5-trihydroxybenzoate, isovanilin and tyramine as raw material.

概述了加蘭他敏從黃水仙亞洲精選精品黃色視頻、沃氏雪花蓮中提取99伦乱视频、石蒜中提取及逆流色譜法精制、喇叭水仙酶法中提取的方法、工藝激情五月丁香婷婷；以3欧美精品公开视频，4-二甲氧基苯甲醛、3h片在线观看视频免费播放，4榴莲视频ios网址链接，5-三羥基苯甲酸甲酯和異香草醛和酪胺為起始原料合成加蘭他敏的方法。

A sample-pretreated method of ether-extraction-precolumn-derivation was established, and the chromatographic conditions, which was used for determinating the derivant of extracted UDCA, were decided to be Hypersil C_(18) column(250×4.6mm, 10μm), acetonitrile-methol-0.005mol·L~(-1) phosphoric buffer-triethylamine(50:27:42:0.25, adjusted to pH3.0±0.1 by phosphoric acid) as mobile phase with detective UV wavelength at 247nm and column temperature at 35℃.

建立了乙醚提取-柱前衍生化血漿樣品預(yù)處理方法97人妻a，采用Hypersil C_(18)柱(250×4.6mmxxxx激情，10μm)，乙腈-甲醇-0.005mol·L~(-1)NaH_2PO_4緩沖液-三乙胺(50：27：42：0.25国产亚洲黄色视频，磷酸調(diào)節(jié)pH3.0±0.1)為流動(dòng)相的HPLC法国产无遮挡又黄又爽不卡，以溴苯乙酮為衍生化試劑，在247nm處測(cè)定家兔血漿中熊去氧膽酸衍生化產(chǎn)物免费视频,国产精品。

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.

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A series of UV curable waterborne hyperbranched polyester s with different acid/amine terminal rate,which contained -OH?-COOH and methacrylic chain end groups,and were partly neutralized with thertiary amine,were synthesized from trimellitic anhydride,epichlorohydrin,glycidyl methacrylate and triethylamine.

以偏苯三酸酐人人爽人人操人人在高潮、環(huán)氧氯丙烷、甲基丙烯酸縮水甘油酯亚洲精品综合欧美极品、三乙胺合成了末端羧基與氨基不同比例的一系列可UV固化的高支化聚酯你懂的视频在线播放，研究了末端官能團(tuán)對(duì)合成產(chǎn)物水溶性、粘度以及凝膠轉(zhuǎn)化率的影響舔操干视频。

First, the geometry optimization for 1-phenyldibenzophosphole and triphenylphosphine were carried out using quantum chemical AM1 method.

用量子化學(xué)AM1方法優(yōu)化了1-苯基二苯并膦和三苯基膦的幾何構(gòu)型无码爱爱视频网址，比較了兩種化合物的電子結(jié)構(gòu)和空間結(jié)構(gòu)，發(fā)現(xiàn)PDBP作為羰基合成銠膦催化劑的配體要優(yōu)于三苯基膦激情国产黄色；系統(tǒng)研究了PDBP的合成方法黄色在线视频永久免费，其最佳合成條件為：在無(wú)水無(wú)氧的條件下，采用二乙胺鋰與溴化四苯基膦摩爾比為3一级A片刺激高潮视频在线观看，反應(yīng)溫度為22 ℃十八禁的动漫视频网站，反應(yīng)5 h，反應(yīng)后酸化亚州天堂在线观看， pH值為1～2a级国产制服影院，產(chǎn)物收率可達(dá)到85％～88％。

Methods 2-(piperazin-1-yl)-1-(pyrrolidin-1-yl)ethanone (2) was synthesized from pyrrolidine via amidation and substitution, followed by treating with chloroacetyl chloride and triphenylphosphine in a "one pot" manner to give the corresponding phosphonium chloride 3 in a stable and pure form after crystallization from isopropanol.

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