We investigated constituent of triterpenoid saponins ofAlbizzia, two new compounds together with two known compounds were isolated from Albizzia julibrissin Durazz. by using column chromatography (macroreticular resin, silica gel, Sephadex gel, reverse phase silica gel),preparative HPLC methods et al.On the basis of spectroscopic analysis, including IR,ESI-MS,~1H-NMR,~(13)C-NMR,HMBC,HMQC,~1H-~1HCOSY and chemical methods, the structure of two new compounds were identified as 3 - O -[β-D-xylopyranosyl(1→2)-β-D-fucopyranosyl (1→6)-β- D -2- deoxy - 2 - acetoamidoglucopyranosyl] -21-O-[(6S)-2- trans- 2,6-dimethyl - 6 - O-β- D - quinovopyranosyl -2,7- octadienoyl] - acacic acid- 28 - O-β-D-glucopyranosyl(1→3)[α-L-arabinofuranosyl(1→4)]-α-L-rhamnopyranosyl(1→2)-β-D-glucopyranoside acacic acid 3- O -β- D- glucopyranosy(1→3)-β- D- fucopyranosl(1→6) [β-D- xylopyranosyl (1→2)]-β-D-glucopyranoside ;two known compounds were acacic acid lactone 3- O -β-D- xylopyranosyl-(1→2)-β-D-fucopyranosl (1→6)- 2-deoxy -2 -acetoamido -β-D- glucopyranoside ; acacic acid lactone 3- O-β-D-xylopyranosyl(1→2)-α-L- arabinopyranosl (1→6)- 2- deoxy - 2- acetoamido -β-D-glucopyranoside . The study lays chemical foundation and chemical reference substance for enhancing quality standard of Albizzia julibrissin Durazz.

本研究論文在綜述國內(nèi)外對合歡屬Albizzia三萜皂苷化學成分和藥理作用研究進展的基礎上国产在线观看无遮挡无码Aⅴ，利用傳統(tǒng)植化分離手段和現(xiàn)代分離技術免费在线看a片网址，包括大孔樹脂禁止啪啪啪免费视频观看、硅膠日韩美女中文字幕高清、葡聚糖凝膠www.94se.com、反相硅膠等柱色譜黄网址免费，制備高效液相色譜法等技術從中藥合歡皮中分離得到了4個化合物，其中自拍另类图区亚洲制服，2個新化合物和2個己知化合物www.krttz.com，并進一步通過現(xiàn)代分析技術IR亚洲日本无吗在线视频，ESI-MS，~1H-NMRA片视频免费观看的网址，~(13C-NMR欧美日韩亚洲综合视频，HMBC，HMQC免费观看黄色国产一级视频，~1H-~1HCOSY等和化學方法鑒定了2個新化合物的結構分別是：3-O-[β-D-吡喃木糖基(1→2)-β-D-吡喃夫糖基(1→6)-β-D-2-去氧-2-乙酰氨基吡喃葡萄糖基]-21-O-[(6S)-2-反式-2无码专区免费大全在线观看，6-二甲基-6-O-β-D-吡喃雞納糖基-2，7-辛二烯酸基]-金合歡酸-28-O-α-L-呋喃阿拉伯糖基(1→4)[β-D-吡喃葡萄糖基(1→3)]-α-L-吡喃鼠李糖基(1→2)-β-D-吡喃葡萄糖苷又粗又硬又黄又长又爽的免费视频，金合歡酸3-O-β-D-吡喃葡萄糖基(1→3)-β-D-吡喃夫糖基(1→6)[β-D-吡喃木糖基(1→2)]-β-D-吡喃葡萄糖苷成人免费网站；2個已知化合物結構分別是：金和歡酸內(nèi)酯3-O-β-D-吡喃木糖基(1→2)-β-D-吡喃夫糖基(1→6)-β-D-2-去氧-2-乙酰氨基吡喃葡萄糖苷，金和歡酸內(nèi)酯3-O-β-D-吡喃木糖基(1→2)-α-L-吡喃阿拉伯糖基(1→6)-β-D-2-去氧-2-乙酰氨基吡喃葡萄糖苷动漫专区第一页。

The absorption bands in visible region are related to photoinduced electron transfer processes, and the dimethylfluorenyl amino benzofuran groups are major chromophore thatcontributed to the sensitization of photo-to-current conversion.

可見區(qū)的吸收帶都與光誘導電荷轉移過程有關亚洲色图10p，二甲基芴氨基苯并呋喃基團是在光電轉換敏化中起主要作用的基團。

In the medium of H_2SO_4 and catalyzed by potassium bromide, iodate can oxidize and decolorize methyl orange very well.

基于硫酸介質(zhì)中噜噜在线，碘酸根在溴化鉀的催化作用下對甲基橙有較好的氧化褪色作用淫AV片。

This paper reports the sensitizing effect on the fluorescence of Mo morin complex by CTMAB.

研究了十六烷基三甲基溴化銨對鉬－桑木色素絡合物熒光的增敏作用。

A process for preparingp-fluo-2-(2-methyl-3-propionyl)-4-oxy-N,3-diphenyl-phenylbutylamide includes such steps as Friedle-Craft acylating of newly prepared phenylacetyl chloride and fluorobenzene under catalysis of AlCl3 to obtain 4-fluoro-phenylbenzyl ketone, brominating at carbonyl alpha position under catalysis of less AlCl3 to obtain alpha-bromo-4-fluo-phenylbenzyl ketone, and condensing with isobutyryl acetanilide under action of sodium ethoxide.

本發(fā)明涉及一種制備對氟－2－(2－甲基－3－氧丙基)－4－氧－N欧洲熟妇色XXXX欧美老妇继续搜索搜索，3－二苯基－苯丁酰胺(1)的方法裸体美女成人性大片在线观看网站，其包括以下步驟：新制的苯乙酰氯與氟苯在AlCl3催化下進行Friedle－Craft酰化反應国产精品怕怕无码，得到對4－氟－苯基芐基酮(4)免费看的性爱视频；化合物(4)在少量AlCl3催化下進行羰基α位溴化，得到α－溴－4－氟－苯基芐基酮(5)超碰在线人妻免费；然后(3)異丁酰乙酰苯胺在乙醇鈉作用下與化合物(5)進行縮合www4438。

In the presence of alkalinity and tetraethyl ammonium bromide, 2,4-dihydroxy benzophenone reacts with allyl glycidyl ether to form an ethylenic derivative of benzophenone, 2-hydroxy-4-(β-hydroxy-γ-allyloxy) propyloxy benzophenone, which can further undergo hydrosilylation with polyhydromethylsiloxane.

在相轉移催化劑四乙基溴化按作用下，利用2男人网，4-二羥基二苯甲酮與烯丙基縮水甘油醚在堿性水溶液中的開環(huán)加成反應日韩午夜不卡免费毛片，合成了中間體4-丙氧基－2-羥基二苯甲酮，將其進一步與聚甲基氫硅氧烷進行硅氫化加成反應欧美激情性爱四射在线。

Surfactants of Hexadecyl trimethyl ammonium bromide and alkyl polyoxyethylene have a slow dying at a higher temperature and have accelerated dying at a lower temperature while leather dying with the curcuma dye.

而表面活性劑十六烷基三甲基溴化銨及平平加O對姜黃素在皮革的染色在較低溫度下有一定的促染作用日韩成人国语在线视频播放网站，在較高溫度下有一定的緩染作用。

Dot1 binding to chromatin occurs normally in the absence of H2B-K123 ubiquitylation, suggesting that ubiquitylation does not regulate enzyme recruitment but does regulate the processive activity of the histone methyltransferase.

Dot1結合到染色質(zhì)通常出現(xiàn)在H2B－K123沒有泛素化的狀態(tài)久久免费看妇高潮A级毛片按撑，暗示泛素化并不調(diào)節(jié)酶的募集欧美性爱蜜腚，但調(diào)節(jié)組蛋白甲基轉移酶后續(xù)作用的活性。

After superfusing the brain slice with guanylate cyclase inhibitor,MB(3 pmol/L) for 30 min,SDR of 10 units showed significant increase as compared with control. However,MB failed to abolish the effect of L-arg on hippocampal neurons.

3給腦片灌流鳥昔酸環(huán)化酶抑制劑亞甲基藍(3umol/L 30 min后亚洲日免费视频，10個單位的平均放電頻率較對照時明顯增加黄色视频污免费网站，但亞甲基藍不能消除L-arg對海馬神經(jīng)元的作用。

N-methylmaleimide was prepared by using dimethyl sulfate as methylation reagent.The paper investigated the addition of N-methyl-3,4-dibromomaleimide and indolylmagnesium bromide,and then 2-bromo-3-(1H-indolyl-3-yl)-N-methylmaleimide and 3,4-bis(1H-indolyl-3-yl-)-N-methyl-maleimide were obtained.

對吲哚在溴乙烷和鎂作用下生成吲哚溴化鎂，而后與3日韩欧美国产综合，4－二溴－N－甲基馬來酰亞胺的加成反應進行了研究放黄国产一区二区，合成了2－溴－3－(1H－吲哚－3)－N－甲基馬來酰亞胺，并對反應條件進行了改進欧美人人干，研究了反應溫度和原料配比對反應的影響美色色。