4-哌嗪基-6,7-二甲氧基喹唑啉的合成研究

以4,5-二甲氧基-2-氨基苯甲酸为起始原料,经环化、氯化和取代反应合成了4-哌嗪基-6,7-二甲氧基喹唑啉(3),其结构经1H NMR及MS(APCI)表征。分别对中间体1、2和产物3的合成方法进行了探索,结果表明,在优化合成路线下,目标化合物3的总收率为61%。     

新型喹唑啉类α1受体阻滞剂的合成研究

以二乙醇胺为起始原料,经卤代反应制得双（2-卤乙基）胺氢卤酸盐,通过与取代苯胺进行环合反应而制得取代苯基哌嗪,再与2-氯-4-氨基-6,7-二甲氧基喹唑啉反应生成目标化合物。     

一类酪氨酸激酶抑制剂的合成及抗肿瘤活性

以4-氯-6,7-二甲氧基喹唑啉、8-溴辛酸乙酯及溴代正丁烷等为原料,根据喹唑啉类化合物药效结构关系,对N-(3-氯-4-烷氧苯基)喹唑啉-4-胺类化合物（ARRY-334543）进行了结构修饰,合成了具有抗肿瘤细胞活性的酪氨酸激酶抑制剂。采用NMR和MS对化合物的结构进行了表征,并对其进行了抗肿瘤细胞活性测试。得到的化合物IX a ~ b均对MCF-7、BGC-823、A549、DU145和H1975细胞有一定的抗肿瘤活性,活性最好的是化合物IX a,其半数抑制浓度（GI50）为0.37μmol/L。     

酪氨酸激酶抑制剂的合成及抗肿瘤活性

以4-氯-6,7-二甲氧基喹唑啉、8-溴辛酸乙酯及溴代正丁烷等为原料,根据喹唑啉类化合物药效结构关系,对N-(3-氯-4-烷氧苯基)喹唑啉-4-胺类化合物(ARRY-334543)进行了结构修饰,合成了具有抗肿瘤细胞活性的酪氨酸激酶抑制剂(Ⅷa~c、Ⅸa和Ⅸb)。采用NMR和MS对抑制剂的结构进行了表征,并对其进行了抗肿瘤细胞活性测试。得到的化合物Ⅸa和Ⅸb均对MCF-7、BGC-823、A549、DU145和H1975细胞有一定的抗肿瘤活性,其中,活性最好的是化合物Ⅸa,其对MCF-7细胞的半数抑制浓度(GI50)为0.37μmol/L。     

9-氯-6,7-二甲氧基-2,3-二氢-1H-环戊二烯并[b]喹啉的合成

报道一种9-氯-6,7-二甲氧基-2,3-二氢-1H-环戊二烯并[b]喹啉的简便制备方法。以2-氨基-4,5-二甲氧基苯甲酸和环戊酮为原料,在三氯氧磷作用下"一锅法"合成目标化合物9-氯-6,7-二甲氧基-2,3-二氢-1H-环戊二烯并[b]喹啉。产物结构经~1H NMR和ESI-MS确证。最佳反应条件为:环戊酮用量为1.5当量,120℃反应12 h,产物收率76.4%。按照最佳反应条件对于底物进行拓展,2-氨基-4,5-二甲氧基苯甲酸和环己酮反应得到9-氯-6,7-二甲氧基-1,2,3,4-四氢吖啶,收率64.2%。     

盐酸阿夫唑嗪的改进合成方法

2-氨基-4,5-二甲氧基苯甲腈与DMF缩合得到6,7-二甲氧基-1H,3H-喹唑啉-2,4-二酮(Ⅱ),Ⅱ经过氯化、胺化、缩合和酸化得到目标产物盐酸阿夫唑嗪(Ⅰ),总产率38.5%。探讨了催化剂、反应温度和反应时间对中间体Ⅱ收率的影响。化合物的结构经IR、1HNMR和ESI-MS等进行了表征。     

3-甲氧基-5,6-二氨基-2-硝基吡啶的合成

研究了以3-氯-5-甲氧基-2,6-二硝基吡啶为原料,通过甲氧化、硝化、氨化合成3-甲氧基-5,6-二氨基-2-硝基吡啶,该化合物的结构通过IR,1H NMR,MS和元素分析进行了表征,确认为目标化合物。分析了3-甲氧基-5-氯-2,6-二硝基吡啶的氯基和硝基的反应活性。     

4-(3′-氯苯氨基)-6-甲氧基喹唑啉类衍生物的合成、表征及抗癌活性研究

以N′-(5-(3-氯丙氧基))-2-氰基-4-甲氧苯基-N,N-二甲基甲脒为原料,经过成环、醚化,合成了4个4-(3′-氯苯氨基)-6-甲氧基喹唑啉类化合物：N-(3′-氯苯基)-6-甲氧基-7-(3-(4-硝基苯氧基)丙氧基)喹唑啉-4-胺、N-(3′-氯苯基)-6-甲氧基-7-(3-(3-硝基苯氧基)丙氧基)喹唑啉-4-胺、4-(3-(4-(3′-氯苯胺基)-6-甲氧基喹唑啉-7-基氧基)丙氧基)-3-甲氧基苯甲醛、3-(3-(4-(3′-氯苯胺基)-6-甲氧基喹唑啉-7-基氧基)丙氧基)-4-甲氧基苯甲醛,收率分别为51.3%、60.3%、85.4%、79.4%。产物的结构经红外光谱、核磁共振氢谱、核磁共振碳谱、质谱和元素分析表征。采用MTT法进行化合物抑制Bcap-37细胞的体外活性测试,结果表明：合成的化合物具有不同程度的抑制Bcap-37细胞的活性, 其中化合物Ιa在10 μmol?L-1浓度下对Bcap-37细胞的抑制率为83.4%。     

4-(3'-氯苯氨基)-6-甲氧基喹唑啉类衍生物的合成、表征及抗癌活性

以N'-[5-(3-氯丙氧基)]-2-氰基-4-甲氧苯基-N,N-二甲基甲脒为原料,经过成环、醚化,合成了4个4-(3'-氯苯氨基)-6-甲氧基喹唑啉类化合物(Ⅰa～Ⅰd):N-(3'-氯苯基)-6-甲氧基-7-[3-(4-硝基苯氧基)丙氧基]喹唑啉-4-胺(Ⅰa)、N-(3'-氯苯基)-6-甲氧基-7-[3-(3-硝基苯氧基)丙氧基]喹唑啉-4-胺(Ⅰb)、4-{3-[4-(3'-氯苯胺基)-6-甲氧基喹唑啉-7-基氧基]丙氧基}-3-甲氧基苯甲醛(Ⅰc)、3-{3-[4-(3'-氯苯胺基)-6-甲氧基喹唑啉-7-基氧基]丙氧基}-4-甲氧基苯甲醛(Ⅰd),收率分别为51.3%、60.3%、85.4%、79.4%。产物的结构经IR、1HNMR、13CNMR、MS和元素分析表征。采用MTT法进行化合物抑制Bcap-37细胞的体外活性测试,结果表明,合成的化合物具有不同程度抑制Bcap-37细胞的活性,其中化合物Ⅰa在10μmol/L浓度下对Bcap-37细胞的抑制率为83.4%。     

4-氯-8-甲氧基喹啉的合成

以2-甲氧基苯胺与乙氧基亚甲基丙二酸二乙酯为起始原料,经缩合、环合、水解、脱羧、氯化反应制得目标化合物4-氯-8-甲氧基喹啉,总收率为33.81%(以2-甲氧基苯胺计,m/m)。对各步合成工艺进行了优化,目标产物结构经1H NMR和MS确证。     

2-氯-6，7-二氢喹啉-8（5H）-酮的合成研究

2-氯-6,7-二氢喹啉培（5H）-酮是四氢喹啉是一个重要的含氮杂环化合物。文章以2-氯-5,6,7,8-四氢喹啉为原料,经氧化、酯化、水解反应后得到2．氯-5,6,7,8-四氢喹啉-8-醇,再经Anelli氧化后得到总收率为57,8％的目标产物。所得化合物的结构均经核磁和质谱确证。     

Synthesis and field screening of chiral monounsaturated epoxides as lepidopteran sex attractants and sex pheromone components

Enantiomerically enriched forms of (Z)-6-cis-9,10-epoxymonoenes and (Z)-9-cis-6,7-epoxymonoenes of chain lengths C_17–20 were synthesized by Sharpless asymmetric epoxidation of allylic alcohol intermediates, followed by tosylation or halogenation and chain extension. The resulting monounsaturated epoxides were field tested as sex attractants for lepidopteran species.Euchlaena madusaria Walker males were attracted to blends of the enantiomers of (Z)-6- cis- 9,10-epoxynonadecene 6Z-cis-9,10-epoxy-19:H; IUPAC name [2,3(Z)]-2-pentyl-3-(2-dodecenyI)oxirane in combination with 6Z,9Z-19: H. The response was antagonized by 9Z-cis-6,7-epoxy-19: H. 6Z,9Z-19: H was tentatively identified in pheromone gland extracts.Xanthotype sospeta Drury male moths were attracted to lures containing 6Z-9S,10R-epoxy-19: H; the response was antagonized by the opposite enantiomer.Pal-this angulalis Hübner males were attracted to 9Z-6S,7R-epoxy-19:H; the opposite enantiomer was antagonistic. 6Z,9Z-19:H and 9Z-cis-6,7-epoxy-19:H and 9Z-cis-6,7-epoxy-19:H were tentatively identified in pheromone gland extracts fromAnacamptodes humaria Guenée females. In field trails, 9Z-6R,7S-epoxy-19:H proved to be the attractive enantiomer, and the response was potentiated by 6Z,9Z-19:H. Mechanisms by which unique chemical communication channels are maintained by each species are discussed.1 Issued as NRCC #32455.     

3-甲基-6，7-亚甲二氧基-2-喹啉酸的合成

采用胡椒醛为原料,经硝化、还原得到邻氨基胡椒醛,再在乙醇钠的催化下,与2-丁酮酸发生Friedland缩合反应,合成了新化合物3-甲基-6,7-亚甲二氧基-2-喹啉酸。通过^1H NMR、IR和元素分析表征了新化合物的结构。     

6,7-甲氧基香豆素冠醚双功能化杯【4】芳烃的合成与表征

以对叔丁基杯[4]芳烃为原料,经碱催化两步合成了26,28-二（6,7-二甲氧基香豆素-4-亚甲基）-5,11,17,23-四叔丁基杯[4]芳烃-25,27-冠-6,产物经IR、^1H NMR表征和元素分析表征,该衍生物为锥形结构并与设计思想一致。     

Aldisin及其衍生物的合成和表征

以五氧化二磷和甲基磺酸为环化试剂,N-(2-吡咯甲酰基)- β-丙氨酸经分子内酰化环化反应,合成了化合物Aldisin及其衍生物4-Bromoaldisin和 4,5-Dibromoaldisin,通过 1HNMR,13CNMR,IR,FABMS对其结构进行了表征.     

6,7-二甲基-2,3-二（2-吡啶基）-喹喔啉的合成及其与铜配位性能的研究

利用1,2-二（2-吡啶）-乙二酮与4,5-二甲基-邻苯二胺反应,合成了6,7-二甲基-2,3-二（2-吡啶基）-喹喔啉（MePyQ）作为配体,通过元素分析和1H NMR对其结构进行了表征,并初步研究了其与铜离子形成配合物的紫外吸收光谱。结果表明,MePyQ与铜离子形成1∶2的金属配合物。     

Identification of sex pheromone ofTetanolita mynesalis (Lepidoptera: Noctuidae), a prey species of bolas spider,Mastophora hutchinsoni

The bolas spider,Mastophora hutchinsoni, attracts adult males of four species of nocturnally active Lepidoptera through aggressive chemical mimicry of those species' sex pheromones. Here we report the identification of the sex pheromone of one prey species, the smoky tetanolita (Tetanolita mynesalis). In sex pheromone gland extracts, only two peaks stimulated an electrophysiological response as measured by a coupled gas chromatography-electroantennographic detection analysis. These two peaks had retention times identical to (3Z,6Z,9Z)-heneicosatriene (3Z,6Z,9Z-21:H) and (3Z,9Z)-cis-6,7-epoxy-heneicosadiene (3Z,9Z-cis-6,7-epoxy-21:H), respectively, and mass spectra identical to these two compounds. It was determined that 0.23±0.16 and 0.56±0.26 ng of 3Z,6Z,9Z-21:H and 3Z,9Z-cis-6,7-epoxy-21:H, respectively, were present in pheromone gland extracts from individual females. A 1:1 blend of 3Z,6Z,9Z-21:H and 3Z,9Z-6S,7R-epoxy-21:H was an effective attractant for adult males from feral populations. Blend ratios of these two components from 2:1 to 1:2 were equally effective as attractants. Greater deviation from the optimal blends resulted in diminished trap catches. The enantiomer 3Z,9Z-6R,7S-epoxy-21:H not only was not effective in attracting males, its presence in the effective blend shut down trap catches. These results indicate that the pheromone blend consists of 3Z,6Z,9Z-21:H and 3Z,9Z-6S,7R-epoxy-21:H. This is the first report of a hydrocarbon/epoxide pheromone for a prey species of this bolas spider. Sex attractants or pheromones for the other three prey species are composed of aldehydes or acetates.     

Microbial transformation of Isopimpinellin by Glomerella cingulata

Microbial transformation studies conducted on isopimpinellin (1) by the fungus Glomerella cingulata have revealed that 1 was metabolized to give the corresponding reduced acid, 5,8-dimethoxy-6,7-furano-hydrocoumaric acid (2). The structure of metabolite 2 was elucidated by high-resolution mass spectrometry (HR-MS), extensive NMR techniques, including (1)H NMR, (13)C NMR, (1)H-(1)H correlation spectroscopy (COSY), heteronuclear multiple quantum coherence (HMQC) and heteonuclear multiple bond coherence (HMBC). The biotransformed product 2 showed weak a in vitro β-secretase (BACE1) inhibitory effect.     

雷美替胺关键中间体2-（2,6,7,8-四氢-1H-茚并[5,4-b]呋喃-8-基）丙烯酸乙酯的合成

通过串联的C-H活化Heck反应和分子内迈克尔加成,我们完成了一种雷美替胺的关键中间体2-（2,6,7,8-四氢-1H-茚并[5,4-b]呋喃-8-基）丙烯酸乙酯的合成。