脱氢枞胺及其衍生物的研究与应用进展

脱氢枞胺及其衍生物在手性拆分、金属离子浮选、表面活性、杀菌、医药、染料等领域有着重要的用途。本文对脱氢枞胺的制备、脱氢枞胺成盐衍生物以及脱氢枞胺成键衍生物的研究与应用进展进行了综述,并对脱氢枞胺及其衍生物的研究及应用前景进行了展望。     

2-取代酰氨基-5-去氢枞基-1,3,4-噻二唑衍生物的合成及杀菌活性

为了寻找具有更高生物活性的新颖先导化合物,本文以去氢枞酸为原料,设计并合成了11个具有1,3,4-噻二唑骨架的新型去氢枞酸衍生物,通过1H NMR、13C NMR、IR、EI-MS和元素分析确认了目标产物的结构。初步的生物活性测试结果表明,大部分化合物具有一定的杀菌活性,其中,化合物2在浓度为50mg/L时对番茄早疫病菌的抑制率达88.9%。     

导数光谱法测定松香中枞酸和脱氢枞酸

本文用导数光谱法对松香中枞酸和脱氢枞酸的测定进行了方法研究和比较,并用四阶导数光谱对几种不同松香中枞酸和脱氢枞酸进行了同时测定,结果令人满意。该法灵敏度高,能较好地消除背景干扰。相对标准偏差0.17％;枞酸回收率99.17％;脱氢枞酸回收率96.27％。     

新型松香基酰基亚胺噻唑烷衍生物的合成

以脱氢枞酸或二氢枞酸为起始原料经酰卤化、硫氰酸根加成、有机胺加成异构、浓盐酸催化脱水成环合成了两个新型的松香基酰基亚胺噻唑烷衍生物,产率分别为29％和41.8％,其结构经1H NMR,13C NMR和IR表征.     

脱氢枞酸降解胺Schiff碱及其铜(Ⅱ)配合物的合成与表征

由水杨醛合成了四种取代水杨醛:5-溴水杨醛、5-氯水杨醛、5-硝基水杨醛、3,5-二硝基水杨醛,用从歧化松香中分离出的纯净的脱氢枞酸先合成脱氢枞酸酰氯,通过Curtius重排转化成脱氢枞酸降解胺,利用水杨醛和取代水杨醛与脱氢枞酸降解胺合成了五种Sch iff碱,并与铜离子配合制得铜配合物.用红外、核磁和元素分析进行了分析.     

C_(60)与N-羧甲基脱氢枞胺的1,3-偶极环加成反应研究

以脱氢枞胺的衍生物N-羧甲基脱氰枞胺与C60及多聚甲醛为原料,于N2保护下在甲苯中回流48h,经1,3-偶极环加成反应,得到脱氢枞胺基团加成度不同的三种C60吡咯烷衍生物,并对它们的结构进行了表征.     

脱氢松香酸β-萘酚酯的合成

松香是自然界极其丰富的一种天然树脂,利用松香等可再生天然资源代替石油发展精细化工已成为日益重要的研究课题[1]。但原料松香存在性能差,使用率低等缺点,因此对松香进行改性,使松香的化学利用由直接利用松香的初级产品向深度利用松香衍生物的方向发展已经成为松香利用的趋势[2]。脱氢松香酸(也叫去氢枞酸、去氢松香酸)主要由松香通过催化歧化后得到,具有芳香型三环二萜结构。它具有性质稳定,抗氧化能力强,比旋光度较大等一些其它的松香衍生物所不具备的独特的理化性质。因此脱氢松香酸具有极大的开发价值。本文以脱氢松香酸和β-萘酚为原…     

两亲性纤维素接枝聚脱氢枞酸共聚物的制备及性能研究

通过均相原子转移自由基聚合法(ATRP)将生物质基疏水性松香单体(脱氢枞酸(2-甲基丙烯酰氧基乙基)酯,MAEDA)接枝到纤维素骨架上合成了全生物质基两亲性的纤维素-g-聚脱氢枞酸接枝共聚物(cellulose-g-PMAEDA).ATRP反应过程动力学研究表明cellulose-g-PMAEDA接枝共聚物的合成过程是活性可控的;傅里叶红外光谱(FTIR)、核磁共振氢谱(1H-NMR)、凝胶色谱(GPC)和X射线衍射(XRD)结果证实了cellulose-g-PMAEDA接枝共聚物的成功合成;由于聚脱氢枞酸侧链的引入,cellulose-g-PMAEDA接枝共聚物的热稳定性,疏水性能明显提高,并且具有紫外吸收性能;动态光散射仪和透射电镜结果表明两亲性cellulose-g-PMAEDA接枝共聚物能够在水溶液中自组装成平均粒径约为200 nm左右的纳米微球,并且该纳米微球具有以纤维素为壳,聚脱氢枞酸酯为核的核壳结构.     

61-甲基-61-[12-(18-N-四氯邻苯二甲酰亚氨基)脱氢枞胺]-1,2-亚甲基富勒烯[60]的合成

以脱氢枞胺为原料,经氨基酰化、12位乙酰化、与对甲苯磺酰肼形成对甲苯磺酰腙衍生物,再通过卡宾中间体与C60进行[2+1]环加成反应合成了C60-脱氢枞胺衍生物。目标化合物经IR,UV-Vis,1H NMR,13C NMR,MALDI-TOF MS表征,所得化合物为[6,6]闭环结构C60加成产物。     

61-甲基-61-[12-(N,N-四氯邻苯二甲酰基)脱氢枞胺]-1,2-亚甲基富勒烯[60]的合成

以脱氢枞胺为原料,经氨基酰化、12位乙酰化、与对甲苯磺酰肼形成对甲苯磺酰腙衍生物,再通过卡宾中间体与C60进行[2+1]环加成反应合成了C60-脱氢枞胺衍生物。目标化合物经IR,UV-Vis,1H NMR,13C NMR,MALDI-TOF MS表征,所得化合物为[6,6]闭环结构C60加成产物。     

Synthesis and BK channel-opening activity of novel N-acylhydrazone derivatives from dehydroabietic acid

A series of hydrazone and N-acylhydrazone derivatives of dehydroabietic acid were synthesized and evaluated for BK channel-opening activities in an assay system of CHO-K1 cells expressing hBKa channels.The assay results indicated that the activities of the investigated compounds were influenced by the physicochemical properties of the substituent at hydrazone moiety.     

Amides of Dehydroabietic Acid Based on 5-Aminooxoindoles and Their Transformation Products

Chemistry of Natural Compounds - Amides of dehydroabietic acid based on 5-aminooxoindoles were synthesized. Further transformations of the oxoindole-functionalized dehydroabietic acid derivatives...     

13C and 1H NMR signal assignments of some new synthetic dehydroabietic acid derivatives

The (1)H and (13)C NMR signal assignments of a series of new synthetic derivatives of dehydroabietic acid are presented.     

Synthesis and antibacterial evaluation of New N-acylhydrazone derivatives from dehydroabietic acid

A series of new N-acylhydrazone derivatives were synthesized in good yields through the reactions of dehydroabietic acid hydrazide with a variety of substituted arylaldehydes. The structures of the synthesized compounds were confirmed by IR, 1H- and 13C-NMR, ESI-MS, elemental analysis and single crystal X-ray diffraction. From the crystal structure of compound 4l, the C=N double bonds of these N-acylhydrazones showed (E)-configuration, while the NMR data of compounds 4a-q indicated the existence of two rotamers for each compound in solution. The target compounds were evaluated for their antibacterial activities against four microbial strains. The result suggested that several compounds exhibited pronounced antibacterial activities. Particularly, compound 4p exhibited good antibacterial activity against Staphylococcus aureus and Bacillus subtilis comparable to positive control. The possible antibacterial metabolism and the strategy for further optimization of this compound were also discussed.     

New Resin Acid Derivatives: Diisocyanate,Diurethanes and Diureides

New difunctional resin acids derivatives, diisocyanate, diurethanes and diureides were obtained via nitration of dehydroabietic acid followed by catalytic hydrogenation or reduction; carbonylation of the resulting amine and further reaction of the new diisocyanate with alcohols or amines.     

ATRP法合成聚去氢枞酸丙烯酸乙二醇酯的研究

本研究从歧化松香中提取的去氢枞酸(DHA)出发,经酰氯化后与丙烯酸(2-羟基)乙酯反应,合成了去氢枞酸丙烯酸乙二醇酯(DHAAGE);并以此为单体,2-溴-异丁酸乙酯(EBr-iB)为引发剂,CuBr/2,2'-联吡啶(2,2'-bipyridine)为催化体系,在90 oC下,利用原子转移聚合(ATRP)法制备了聚去氢枞酸丙烯酸乙二醇酯(PDHAAGE).利用FT-IR、1H-NMR和GPC对所制备的单体和聚合物进行了表征,同时考察了单体转化率随聚合反应时间的变化.结果表明,聚合反应动力学曲线呈良好线性关系,表观聚合速率常数kp′为3.6 ×10-7 s-1;所得聚合物的分子量分布很窄.     

Synthesis,cytotoxicity and apoptosis-inducing activity of novel 1H-benzo[d]imidazole derivatives of dehydroabietic acid

With the expectation of finding new and effective antitumor drugs, a series of novel N-(1H-benzo[d]imidazole-2-yl)-benzamide/benzenesulfonamide derivatives of dehydroabietic acid were synthesized and evaluated for cytotoxic activity against three human cancer cell lines (MCF-7, HeLa, and HepG2 cells) and one human normal hepatocyte cell line (LO2). As a result, a number of derivatives showed moderate to good antitumor activities. Among them, compound 8h exhibited the most potent activities against three cancer cell lines with IC₅₀ values of 0.87 ± 0.18, 9.39 ± 0.72, and 8.31 ± 0.64 μM, respectively, and was less active to normal hepatocyte LO2 cells. Further mechanism studies revealed that compound 8h could arrest the cell cycle of MCF-7 cells at S phase and induce the apoptosis of MCF-7 cells in ROS-mediated mitochondrial pathway.     

去氢枞酸蔗糖酯的溶剂法合成

松香主要成分是二萜树脂酸(C29H29COOH,含量约为90％),可用作表面活性剂的合成原料。将松香树脂酸与蔗糖进行酯化反应,即可合成松香-蔗糖基非离子表面活性剂。目前关于高级脂肪酸蔗糖酯和松香基表面活性剂的研究有许多报道,但有关松香蔗糖酯的研究报道极少,工艺极不成熟,且都使用未经改性的松香,结构中仍保留两个易氧化的双键,不利于长时间储存和使用。从歧化松香中分离提纯去氢枞酸,