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href="http://www.cdcfah.com/cp/second-_jxhxp/">精細(xì)化學(xué)品</a>?<a href="http://www.cdcfah.com/cp/third-jxhxp_ylykq/">原料藥</a>?Segphos哌啶結(jié)構(gòu) 上海畢得醫(yī)藥科技供應(yīng)</p><div id="m2m3cur" class="leftbox clearfix"><h1>Segphos哌啶結(jié)構(gòu) 上海畢得醫(yī)藥科技供應(yīng)</h1><div id="zi2suwy" class="proBig"><div id="yhry88t" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/shbdyykj/637439115818804027/4358182.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="zjgdfho" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/shbdyykj/637439115818804027/4358182.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="ktq7k8k" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>Segphos哌啶結(jié)構(gòu),哌啶</p><p><span>***更新：</span>2021-01-13 01:22:59</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="icu7vfb" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海畢得醫(yī)藥科技有限公司</a></p><p><span>聯(lián)系人：</span>邱鴻婷</p><p><span>郵箱: </span>3003495196@qq.com</p><p><span>電話: </span>13818398014</p><p><span>傳真: </span>021_</p><p><span>網(wǎng)址: </span>https://www.bidepharm.com</p><p><span>手機(jī): </span>021-61629020</p><p><span>地址: </span>翔殷路128號11號樓A座101室</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="odfcjl8" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="mlsjwn3" class="box"><p><p style="text-indent:25px">在堿性催化劑存在下，用適當(dāng)?shù)碾一衔?3a-c環(huán)化在堿性催化劑存在下產(chǎn)生相應(yīng)的6-（2-取代 - 吡啶蛋白-6-基）-2-苯基硫胺[2,3-d]嘧啶15a-c ?；衔?5C可以用適當(dāng)?shù)摩?鹵代羰基化合物16a-d來環(huán)化，得到相應(yīng)的6-（2-取代 - 咪唑[1,2-a]嘧啶-7-基-2-苯基硫蛋白-7-苯基硫蛋白-7-2 -2-苯基噻吩[2,3-D.嘧啶17A-D。另一方面，吡唑洛[1,5-A]嘧啶20a-c，吡啶（嘧啶[2,3：4,3]吡唑[1,5-a]嘧啶22a-c，pyrido [4,5： 4,3]吡唑啉[1,5-a]嘧啶24,1,2,4-三唑[1,5-a]嘧啶26a，1,2,3,4-四唑[1,5-a]嘧啶衍生物26b也通過烯胺酮衍生物1的髓鞘分衍生物1用適當(dāng)?shù)?（3） - 氨基 - 吡唑衍生物18a-c，21a-c，23,3-氨基-1，Segphos哌啶結(jié)構(gòu),2，Segphos哌啶結(jié)構(gòu),4-三唑25a和5-氨基 - 酸條件下的1H-四唑25B，Segphos哌啶結(jié)構(gòu)。6-Iodo-2-異丙基-4H-3,1-苯并惡化-4-1作為雜環(huán)合成的砌塊。Segphos哌啶結(jié)構(gòu)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="Segphos哌啶結(jié)構(gòu),哌啶" src="https://tyunfile.71360.com/WaterMark/UploadFile/shbdyykj/637439115818804027/4358182.png"></div><p style="text-indent:25px">β-酮砜已被確立為可用于制備多種含硫化合物的通用試劑。環(huán)狀β-酮砜是有前途的試劑之一，并且由于它們的可用性以及在合成各種范圍的多環(huán)砜中的可能應(yīng)用而特別有用。環(huán)狀砜基序存在于大量生物活性分子中。根據(jù)重要硫吡喃環(huán)的取代方式，這類化合物已顯示出多種生物活性，范圍從抵御炎癥和抗病毒到ATP敏感的鉀通道（KATP）開放劑?？骨喙庋蹌〥orzolamide和Metikran甚至成為市售藥物。由于其在多組分反應(yīng)（MCR）中的高反應(yīng)活性以及在各種S，N-雜環(huán)的合成中的廣適用性，研究人員對二氫2H-硫代吡喃-3（4H）-1,1-二氧化物1的興趣不斷增長。 MCR被公認(rèn)為是功能強大且高效的工具，它可以簡單且高通量地生成面向硫的雜環(huán)化合物的多樣性導(dǎo)向庫。在這項工作之前，酮砜1已成功用于各種硫代吡喃并[3,2-b]吡啶-1,1-二氧化物和硫代吡喃并[3,2-d]嘧啶的MCR合成中。通過易于使用的二氫-2H-硫噠卟啉-3（4H） - 1,1-二氧化氧化物，由一鍋多組分反應(yīng)（MCR）制備三系列新的環(huán)狀砜。PHOX哌啶原料藥P = C鍵作為三元雜環(huán)陽離子的砌塊：合成，結(jié)構(gòu)和機(jī)械研究。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="Segphos哌啶結(jié)構(gòu),哌啶" src="https://tyunfile.71360.com/WaterMark/UploadFile/shbdyykj/637439115825239454/6107741.png"></div><p style="text-indent:25px">N-雜環(huán)碳烯催化的硝基烯烴反應(yīng)參考資料描述了N-雜環(huán)卡賓（NHC）催化的?；庪x子當(dāng)量（Stetter反應(yīng)），均烯酸酯和烯醇酸酯與反應(yīng)性硝基烯烴作為Michael受體的新進(jìn)展。系統(tǒng)地介紹了使用硝基烯烴進(jìn)行NHC催化的C-C鍵形成反應(yīng)的獨特策略，用于合成合成構(gòu)件，特別是不對稱方法。還討論了單電子轉(zhuǎn)移反應(yīng)與將NHCs用作有機(jī)催化劑相結(jié)合的進(jìn)展，其中硝基烯烴充當(dāng)重要的偶聯(lián)伙伴。本段落所描述匯集了這一重要領(lǐng)域的成就以及未來需要的工作。通過5-Aminouracil，醛的一次性凝結(jié)合成了一系列6,7,8,10-四氫嘧啶[5,4-B]喹啉-2,4,9-（1H，3H，5H）。微波輻射下的DMF中的DIMEDONE，無催化劑。將產(chǎn)物6a，d氧化為7,8-二氫嘧啶-1,9-（1h，3h，6h） - 圖11a，b。在Anhydrons碳酸鉀存在下，在碳酸氫鉀存在下，用乙基碘處理6a，d和/或11a，b分別得到乙基化衍生物12a，b和13a，b。通過元素分析，IR，MS，（1）H和（13）C NMR光譜來確認(rèn)產(chǎn)品的結(jié)構(gòu)。</p><p style="text-indent:25px">一系列具有柔性二羧酸酯結(jié)構(gòu)單元和各種雜環(huán)共配體的Zn-II和Cd-II配合物，配制成{[Zn-2（pda）（2）（phen）（2）]中心點2H（2） O}（n）（1），{[Zn（pda）（dpe）]中心點H2O}（n）（2），[Zn（pda）（bpp）]（n）（3），{[Cd- 2（pda）（2）（2,2'-bipy）（2）]中心點2H（2）O}（n）（4），{[Cd（pda）（4,4'-bipy）（H2O ）]中心點H2O}（n）（5）和{[Cd-2（pda）（2）（bpp）（3）]中心點14H（2）O}（n）（6）（pda = 1 3-苯二乙酸酯，phen = 1,10-菲咯啉，dpe = 1,2-二（4-吡啶基）-乙烯，bpp = 1,3-二（4-吡啶基）丙烷，2,2'-聯(lián)吡啶= 2，已合成2'-聯(lián)吡啶和4,4'-聯(lián)吡啶= 4,4'-聯(lián)吡啶）并對其結(jié)構(gòu)進(jìn)行了表征。過程中,（H2O）（8）簇將環(huán)狀配位二聚體互連，通過氫鍵形成3D網(wǎng)絡(luò)。這些復(fù)合物的結(jié)構(gòu)比較表明，輔助配體的特征（從螯合到橋聯(lián)）在控制配位基元以及3-D超分子格中起關(guān)鍵作用。一種雜環(huán)砌塊的方法：合成含有[5,6]吡喃[2,3-C]吡唑-4（1H）- 酮部分的新型環(huán)形系統(tǒng)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="Segphos哌啶結(jié)構(gòu),哌啶" src="https://tyunfile.71360.com/WaterMark/UploadFile/shbdyykj/637439115867680637/3418900.png"></div><p style="text-indent:25px">使2-芳基肼基-3-氧代丁腈2與鹽酸羥胺反應(yīng)，得到酰胺肟3。在乙酸酐中回流時，將其環(huán)化成相應(yīng)的惡二唑4。當(dāng)在哌啶存在下在DMF中回流時，形成相應(yīng)的1,2,3-三唑胺5。通過加入乙酸酐將后者?；癁?，同時用丙二腈處理5，得到1,2,3-三唑并[4,5-b]吡啶8。用DMFDMA處理乙?；苌?，得到烯胺酮9。烯胺酮9 將其與氯化苯重氮鎓偶合，得到苯基偶氮-1,2,3-三唑并[4,5-b]吡啶10。嘗試通過在AcOH中回流將化合物14轉(zhuǎn)化為1,2,3-三唑并[4,5-d]嘧啶15。 / NH4OAc失敗。相反，形成了水解產(chǎn)物5。該雜環(huán)胺由包含五個亞甲基橋和一個胺橋的六元環(huán)組成。上海DuPHOS和BPE哌啶</p><p style="text-indent:25px">作為雜環(huán)合成中的一個砌塊的5- aminouracil。Segphos哌啶結(jié)構(gòu)</p><p style="text-indent:25px">提出了一種全合成擬蝶呤和相關(guān)擬蝶烷的逆合成策略。該方案取決于合適的2，5-二官能化的3-糠酸酯的早期加工。為此，一對有用的底物21和24易于由2，3-O-異亞丙基-D-甘油醛和4-（苯硫基）乙酰乙酸甲酯合成。接下來研究這兩種中間體向呋喃內(nèi)酯27的轉(zhuǎn)化。獲得適當(dāng)控制立體化學(xué)的方法是在三氟化硼催化條件下將24與3-甲?；峒柞タs合。接下來的五個步驟完成了27的（苯硫基）甲基取代基向所需的異戊烯基側(cè)鏈的轉(zhuǎn)化。因為*能以中等收率實現(xiàn)在46中內(nèi)酯羰基的烷基化-α，所以預(yù)期的大環(huán)的部分是通過較收斂的方式較早引入的。實際上，事實證明，將24與52耦合是有效的并且具有非對映選擇性。在精心設(shè)計丁烯醇內(nèi)酯亞基后引入異戊烯基側(cè)鏈的嘗試失敗后，化學(xué)順序被顛倒了。為此目的，用于兩個相關(guān)側(cè)基的氧化的雙亞硒基化策略特別有效。異丁烯基片段隨后在溴化物62上的化學(xué)特異性連接是通過鈀（0）催化偶聯(lián)至乙烯基錫烷的方法實現(xiàn)的，該方法具有相當(dāng)大的通用性。進(jìn)一步的化學(xué)操作產(chǎn)生了二十二碳四烯ane烷71，從而完成了假p烷環(huán)系統(tǒng)的總合成的中間階段。Segphos哌啶結(jié)構(gòu)</p><p> 上海畢得醫(yī)藥科技有限公司成立于2007年，總部位于上海市楊浦區(qū)理工大學(xué)國家大學(xué)科技園，是一家以醫(yī)藥中間體相關(guān)產(chǎn)品的研發(fā)、生產(chǎn)、銷售及合成定制為主的****。自公司成立以來，始終堅持信譽至上，質(zhì)量過硬的企業(yè)信條，產(chǎn)品被應(yīng)用于生命科學(xué)、有機(jī)化學(xué)、材料科學(xué)、分析化學(xué)與其他學(xué)科的研發(fā)及生產(chǎn)領(lǐng)域，銷售范圍遍及全球。目前，公司與諸多國內(nèi)**醫(yī)藥研發(fā)單位建立了合作伙伴關(guān)系。 </p> <p> 公司位于上海理工大學(xué)科技園的行政辦公中心面積達(dá)1,700平米，在藥谷設(shè)立的研發(fā)中心面積1,800平米，包括化學(xué)合成實驗室和公斤級實驗室，并配有現(xiàn)代化倉儲物流中心。公司優(yōu)勢產(chǎn)品包括特色雜環(huán)化合物、含氟化合物、手性化合物、氨基酸及其衍生物、硼酸及其衍生物等，已有多項科研項目獲得國家發(fā)明專利。 </p> <p> 為確保產(chǎn)品質(zhì)量，公司引進(jìn)了先進(jìn)齊全的分析測試設(shè)備，包括400MHz核磁共振儀(NMR)、電感耦合等離子體發(fā)射光譜儀(ICP)、液質(zhì)聯(lián)用儀(LCMS)等，并配以嚴(yán)格的質(zhì)量管理體系。公司簽有具備GMP資質(zhì)的合作工廠，配備專業(yè)的研發(fā)團(tuán)隊，形成了從小試、中試到工業(yè)化規(guī)模的生產(chǎn)能力，滿足客戶定制合成、目錄試劑采購及合成外包生產(chǎn)的需求。 </p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2819367.html</p></div></div></div></div></div><div id="s8f48km" class="page-right twoColRt"><div id="dc3c8y7" class="box01 margin10 clearfix"><h3><a 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