Synthesis of Tetraacetal Tetraoxa-Cage Compounds with Alkyl Substituents at Different Sites of the Oxa-Cage Skeleton

Tetraacetal tetraoxa-cage compounds 3a, 3b, 4a, 4b, 7, 13,14 , and 15 were synthesized by a short sequence. They were obtained from ozonolysis of endo adducts la, lb, 2a, 2b , and 6 in dichloromethane at ?78 °C followed by reduction with dimethyl sulfide. Ozonolysis of 7-anti-trimethylsilyl-5,6-bis-endo-diacetylnorbornene 8 under the same reaction conditions did not give the tetraoxa-cage 9 . The methylsulfinyl oxa-cage 13 derived from l-methylthio-5,6-bis-endo-diacetylnorbornene 11 was converted to compounds 14 and 15.     

Transannular Cyclizations in Caged Bislactones: Synthesis of Polyfunctional Cyclopentanes and Oxa-Cage Compounds

The reactions of dilactones based on bicycl[2.2.1] heptane and [2.2.2]octane systems with Grignard reagents and LiA1H₄ furnished polyfunctional cyclopentanes and oxa-cage compounds resulting from extensive transannular interactions.     

新型2'-溴-2-羟基联苯类化合物的合成

以Pd(PPh3)4为催化剂,Na2CO3为碱,反应温度为90℃,在甲苯/乙醇/水混合溶剂中实现了邻二溴苯类化合物与邻羟基苯硼酸类化合物的Suzuki偶联反应,合成了9个2'-溴-2-羟基联苯类化合物(3a~3i),其中3b~3i为新化合物,其结构经1H NMR,13C NMR和ESI-MS表征。     

新型苯并二氮卓类化合物的合成

分别以2-氯-3-硝基吡啶和4,6-二氯-5-硝基嘧啶为起始原料,经取代、还原、Bischler-Napieralski关环和氧化反应合成了新型含酮羰基的吡啶并苯并二氮卓类化合物(6a~6c)和嘧啶并苯并二氮卓类化合物(6d),其结构经1H NMR,13C NMR和ESI-MS表征。并重点考察了氧化反应条件,实验结果表明,合成6a~6c时,用乙腈作溶剂,硅藻土作载体,氧化效果较好;合成6d时,以THF为溶剂、活性炭为载体,效果较好。     

Synthesis of Novel Benzocyclobutene Compounds

Novel benzocyclobutene derivatives, 3-mercaptobicyclo[4.2.0]octa-1,3,5-triene (2), and 3-chlorosulfonylbicyclo[4.2.0]octa-1,3,5-triene (3), have been synthesized in good yields from easily accessible bromobenzocyclobutene 5.     

Synthesis and Anti-Proliferative Activity of Novel Tricyclic Compounds Derived from 2-Substituted 1,3-Indandione

A new series of fused 1,3-indandione derivatives has been synthesized and evaluated for anti-proliferative activity. 2-Alkene-1,3-indandione derivatives have been used as the precursors of a number of tricyclic compounds. The latter have been tested for anti-proliferative activity.     

The Synthesis of Novel Methotrexate-like Compounds

Summary. Methotrexate (MTX) is a folate antagonist used in treatment of several chronic inflammatory and neoplastic conditions. In this study, new MTX-like compounds that may-be potential anticancer agents were synthesized and their structures were determined by IR, UV, GC-MS, ¹H NMR, and ¹³C NMR spectra. Also, in this study, a series structurally related to MTX or folate analogous compounds were evaluated whether they have inhibitory properties on the dihydrofolate reductase activity (DHFR).     

新型咔唑取代乙炔化合物的合成

分别以咔唑和2-羟基咔唑为原料,通过Sonagashira偶联反应和N-烷基化反应合成了6个新型的咔唑取代乙炔化合物:2-乙炔基-9-苄基咔唑,2-乙炔基-9-正丁基咔唑,2-乙炔基-9-正己基咔唑,3-乙炔基-9-苄基咔唑,3-乙炔基-9-正丁基咔唑和3-乙炔基-9-{4·[4·(硝基)苯基偶氮苯]氧}亚丁基咔唑,其...     

Synthesis of Novel Antifungal Triazole Compounds

Based on our previous studies of 3D-QSAR, 38 novel objective compounds belonging to 4 series were designed and successfully synthesized directed by the idea of reconstructing the structure of non-pharmacophores while reserving essential ones in triazoles. In vitro pilot studies on their antifungal activities showed that most compounds have inhibitory effects on C.albicans and some inhibit S.cerevisiae also. The effects on C.albicans of 5 compounds are more potent than or equal to that of fluconazole or itraconazole.     

几个新型含氟化合物的合成

以3-硝基-4-氯三氟甲苯(1)为起始原料, 合成了新型含氟杂环化合物8和3个含氟中间体4, 5, 6. 通过IR, NMR, MS和元素分析对它们的结构进行了表征. 探讨了反应条件对产物结构的影响, 提出了化合物4可能的形成机理.     

一锅法合成新型羟基环戊烯酮化合物

以二芳基乙酮（4a~4f）和取代丙酮（5a~5c）为原料,KHCO₃为碱,100 ℃空气条件下,在DMSO中经二芳基乙酮氧化、羟醛缩合一锅法合成了12个羟基环戊烯酮化合物（6a~6l）,其中6d, 6h和6i为新化合物,其结构经¹H NMR, ¹³C NMR和HR-MS(ESI)表征。     

Synthesis of Novel Thioethers and Sulfoxide Compounds

Abstract

Thiosubstituted butadiene and butenyne compounds were synthesized from the reactions of 1,1,3,3,4,4-hexachloro-1-butene or 1,1,2,4,4-pentachlorobuta-1,3-diene with different thiols in EtOH/H₂O solution of NaOH. Tris(thio)substituted butadiene compound was treated with potassium tert-butoxide to obtain tris(thio)substituted butatrienyl halide compound. The novel sulfoxide compounds were synthesized from the reactions of polyhalobutadiene compounds with aliphatic thiols in CHCl₃ with m-CPBA at 0°C. The structures of the novel compounds were characterized by micro analysis, FT-IR, ¹H-NMR, ¹³C-NMR, and MS.     

新型苦参碱肟酯类化合物的合成

利用生物活性因子拼接法将活性基团肟酯引入植物源活性化合物苦参碱中对其结构进行修饰,以苦参碱为原料,与亚硝酸叔丁酯反应制得关键中间体肟（2）; 2与苯甲酰氯类化合物经酯化反应合成了8个新型的苦参碱肟酯类化合物,其结构经¹H NMR, ¹³C NMR和MS表征。     

新型吡唑并嘧啶并吡唑三元稠合化合物的合成

Novel fused heterotricyclic compounds 3—6 containing two different dipyrazolopyrimidine framework were prepared from 1a—1d. The reaction of 1 with K2CO3 in DMSO or NaH in DMF led to the formation of 2 or 3, respectively, which reacted further to afford 6 or 5, respectively.     

1,3,3-三甲基-2-亚甲基吲哚啉合成新工艺研究

１，３，３┐三甲基┐２┐亚甲基吲哚啉合成新工艺研究马新起李明静乔聪震（河南大学化学化工学院开封４７５００１）侯希峰（开封化学试剂总厂４７５００１）马新起男，３３岁，讲师，从事化学工程教学精细化学品的开发与研究。河南省教委资助研究项目１９９７－０６－３...     

苦参碱磺胺类拼合物的合成

以1-溴-2-氯乙烷或1-溴-3-氯丙烷为连接链,将苦参碱和磺胺类化合物连接起来合成了8个新型的苦参碱磺胺类拼合物,其结构经1H NMR,IR和MS表征。     

新型芳基丙炔酸乙酯类化合物的合成

以Pd(PPh3)Cl2/CuI为催化剂,K2CO3为碱,在THF中实现了芳基碘与丙炔酸乙酯(2)的Sonogashira偶联反应,合成了两个新型的芳基丙炔酸乙酯类化合物。而芳基硼酸与2的反应则是在Cu I/Ag2O的催化下,以Cs2CO3为碱,在DCE溶剂中经Suzuki偶联实现的。化合物的结构经1H NMR,13C NMR和HR-MS表征。     

区域和立体选择性合成新型螺羟吲哚类化合物

2-芳亚甲基苯并[4,5]咪唑并[2,1-b]噻唑-3-酮与甲亚胺叶立德(经靛红与肌氨酸反应在线生成)进行l,3-偶极环加成反应, 合成了8个新的螺羟吲哚类化合物. 采用元素分析, NMR, IR, 质谱以及X射线单晶衍射等多种谱学技术对产物进行详细表征, 而产物的晶体结构表明了此类反应具有高度的立体选择性和区域选择性.     

新型含氮杂环硼-二吡咯亚甲基染料类荧光化合物的合成

以对羟基苯甲醛和2,4-二甲基吡咯为原料,设计并合成了两个新型的8-位苯系取代的硼-二吡咯亚甲基染料类荧光化合物--4,4-二氟-8-[4′-(3-吗啉丙氧基)苯基]-1,3,5,7-四甲基-4-硼-3a,4a-二氮杂-s-引达省和1,4-二{4,4-二氟-8-[4′-(2-乙氧基)苯基]-1,3,5,7-四甲基-4-...     

新型氨基喹唑啉化合物的合成及其抗肿瘤活性

以2-氰基-4-硝基苯胺为原料,设计并合成了6个新型的氨基喹唑啉类化合物(5a~5c和6a~6c),其结构经1H NMR,13C NMR和ESI-MS表征。初步的抗肿瘤活性测定结果表明,6-(4-甲酸甲酯苯甲酰胺基)-4-(4-甲基-3-三氟甲基苯胺基)喹唑啉(5b)对人乳腺癌细胞MDA-MB-231和人宫颈癌细胞HELA的抑制活性较好,其IC50分别为4.50μM和3.3μM,优于阳性对照药Gefitinib。