经分子内Mannich反应合成3,6—二取代—5,6—二氢—s—三唑并（3,4—b）—1, …

３－取代基－４－氨基－５－巯基－１，２，４－三唑在微量酸催化下与取代芳香醛经分子内Ｍａｎｎｉｃｈ反应合成了２９个新的３，６－二取代－５，６－二氢－ｓ－三唑并（３，４－ｂ）－１，３，４－噻二唑啉类化合物，其结构经元素分析，ＩＲ和＾１ＨＮＭＲ进行确证，并讨论了反应的立体选择性。     

1同基团2—二氰基—4,5—双十四烷氧基苯合成方法的改进

由邻苯二配合经溴代反应制得１，２－二溴－４，５－苯二酚，再与无水碳酸钾和１－工二四烷反应制得１，２－圩溴－４，５－双二四烷氧基苯，最后在ＤＭＦ－ＮａＩ体系中与氰化亚铜反应制得１，２－二氰基－４，５－双十无期基苯，新化合物的结构经元素分析，ＩＲ、ＨＮＭＲ等证实。     

3—芳基—5—巯基—1,2,4—均三唑的双—Mannich反应研究

研究了在氯化氢－乙醇溶液中，３－芳基－５－巯基－１，２，４－均三唑与甲醛和伯胺（芳胺或脂肪胺）的双Ｍａｎｎｉｃｈ反应，合成了１３的的稠杂环化合物３，５－二取代０四氢均三唑并「３，４－ｂ」「１，３，５」噻二嗪，经元素分析、Ｉ手ＭＳ确定了结构，初步测定了该类化合物的生物活性。     

3—苯基—4—氯—1,3,4—二氮磷杂环戊—2—硫酮的合成及其除…

报道了苯基硫脲与脂肪醋（酮）及三氯化磷进行的类Ｍａｎｎｉｃｈ反应，除生成预期产物３－苯－４－氯－４－氧代－１，３，４二氮磷杂环戊－２－硫酮（Ⅰ）外，还生成了少量３－苯基－４－氯－４－硫代－１，３，４－二氮磷杂环戊－２－硫酮（Ⅱ）。当Ⅰ与Ｌａｗｅｓｓｏｎ试剂在甲苯中反应时，可顺利地转化为Ⅱ，生物测定结果表明，Ⅱ具有较好的选择性除草活性，晶体结构测定表明，Ⅱ的五元磷杂环为平面结构。     

稠杂环化合物的研究（XV）：6—取代—3—（1H—苯并三唑—1—亚甲基）…

研究了３－（１Ｈ－苯并三唑－１－亚甲基）－４－氨基－５－巯基－１，２，４－三唑与取代苯甲酸在三氯氧磷催化下的反应，制得１０种新的３－（１Ｈ－苯并三唑－１－亚甲基）－１，２，４－三唑并［３，４－ｂ］－１，３，４噻二唑，通过元素分析，ＩＲ、＾１ＨＮＭＲ和ＭＳ确证了它们的结构并讨论了其波谱性质。     

1—甲苯磺酰基—3—芳基—4—苯基—1,4,2—二氮磷杂环戊—5—酮的合成及除草…

通过１－苯基－３－对甲苯磺酰基脲与亚磷酸三苯酯和取代苯甲苯在甲苯中进行的类Ｍａｎｎｉｃｈ反应合成１－对甲苯磺酰基－２－苯氧基－２－氧代－３－芳基－４－苯基－１，４，２－二氮磷杂环戊－５－酮。生物测定实验表明，某些产物具有良好的选择性除草活性。     

1—对甲苯磺酰基—2—氧代—2—苯氧基—3—芳基—1,4,2—二氮…

通过１－苯基本磺酰基硫脲（１）与亚磷酸三苯酯和取代苯甲醛在甲苯中进行的类Ｍａｎｎｉｃｈ反应合成１－对甲苯磺酰基－２－氧代－２－苯氧基－３－芳基－１，４，２－二氮磷杂环戊－５－硫酮（２）。本文对合成过程中所涉及到的副反应进行了初步探讨。     

（3—苄基—4—芳酰基—1,2,4—三唑—5—基）（5—苯基—1,3,4—E…

通过３－苄基－４－芳酰基－１，２，４－三唑－５－巯基负离子在２－甲磺酰基－５－苯基－１，３，４－Ｅ二唑环２－位上的亲核取代反应，制得１３个新的（３－苄基－４－芳酰基－１，２，４－三唑－５－基）（５－苯基－１，３，４－Ｅ二唑－２－基）硫醚衍生物。经元素分析、ＩＲ、＾１Ｈ ＮＭＲ和ＭＳ裂解碎片分析确认结构。初步观察了它们在０．０１％浓度时对大肠杆菌繁殖的抑制作用。     

3—吡唑基—6—取代均三唑并[3,4—6]—1,3,4—噻二唑的合成及生物活性

以１－甲基－３－乙基（４－氯）－５－哟唑甲作原料，经两步得到４－氨基－３－（１－甲基－３－乙基（４－氯）－５－吡唑基）－１，２，４－三唑－５－硫酮（３），３再与取代酸反应，得到一系列３（１－甲基－３－，乙基（－４－氯）－５－吡唑基）－６－取代均三并「３，４－ｂ」－１，３，４－噻二唑（４，５，６），元素分析、ＨＮＭＲ、ＩＲ和ＭＳ确定了它们的结构，初步生侧结果表明，３具有植物生长调节活性，４ｂ、４ｄ、     

1—（取代异恶唑基）—1,2,4—三唑和1—（取代嘧啶基）—1,2,4—…

合成了１５个新的１－（取代恶唑基）－１，２，４－三唑和１（取代嘧啶基）－１，２，４－三唑化合物，经元素分析、ＩＲ、ＨＮＭＲ和ＭＳ证实基，对其代表化合物进行抑菌及植物生长调节活性的初步观察。     

Bifunctional chelators for copper radiopharmaceuticals: the synthesis of [Cu(ATSM)-amino acid] and [Cu(ATSM)-octreotide] conjugates

Two new bifunctional chelators that are derivatives of the bis(thiosemicarbazone) ATSMH(2) proligand have been prepared, one with two phenyl carboxylate substituents on the exocyclic nitrogens (L(1)H(2)) and one with a single phenyl carboxylate (L(2)H(2)). The new ligands have been characterised by NMR spectroscopy, mass spectrometry and in the case of L(1)H(2) by X-ray crystallography. The copper, nickel and zinc complexes of the new ligands have been synthesised and characterised. Electrochemical measurements show that the copper(II) complexes undergo a reversible reduction attributable to a Cu(II)/Cu(I) process. The new proligands have been tethered to the N-alpha-Boc-protected amino acids lysine and ornithine using solution and solid phase methods. The new amino acid conjugates form copper complexes and the complexes have been characterised by mass spectrometry and electronic spectroscopy. The bifunctional chelator L(2)H(2) has been conjugated to the tumour targeting peptide octreotide and the new ATSMH(2)-octreotide conjugate and its copper complex have been characterized by mass spectrometry. These new systems have the potential to be used for new targeted copper radiopharmaceuticals for imaging and therapy.     

金属催化的不对称氢化反应研究进展与展望

手性过渡金属络合物催化的不对称氢化反应是合成光学活性化合物的重要方法. 本文从手性配体及手性催化剂、不对称催化新反应、新方法和新策略三个方面简要评述新世纪以来过渡金属催化的不对称氢化反应研究领域的新进展. 从新世纪初至今, 手性单磷配体得到了复兴, 出现了如MonoPhos、SiPhos、DpenPhos等高效单齿亚磷酰胺酯配体; 磷原子手性(P-手性)配体也得到了快速发展, 如BenzP*、ZhanPhos、TriFer等已成为新的高效手性双膦配体; 螺环骨架手性配体成为新世纪手性配体设计合成的亮点, 除了SiPhos、SIPHOX、SpinPHOX等高效手性螺环配体外, 手性螺环吡啶胺基磷配体SpiroPAP的铱催化剂成为目前最高效的分子催化剂. 不对称催化氢化新反应研究也取得了突破, 如非保护烯胺、杂芳环化合物及N-H亚胺的氢化等反应都实现了高对映选择性. 自组装手性催化剂、树枝状手性催化剂、铁磁性纳米负载的可回收手性催化剂, 以及“混合”配体手性催化剂等新方法和新策略也在不对称催化氢化反应中得到了应用. 然而, 手性过渡金属络合物催化的不对称氢化研究仍然充满挑战, 也期待新的突破.     

Terpenoids and aromatic compounds from the New Zealand liverworts Plagiochila, Schistochila, and Heteroscyphus species

A new clerodane- and two new ent-rosane-type diterpenoids have been isolated from the New Zealand liverworts Heteroscyphus billardierii and Plagiochila deltoidea, respectively. The known bisbibenzyl compounds and acetophenones have also been isolated from Schistochila glaucescens and Plagiochila fasciculata. Their structures were established by extensive NMR techniques. Chemosystematics of the Plagiochila species have been discussed.     

吲哚-6-酰腙类化合物的微波合成及其抗菌活性研究

把酰腙类结构引入吲哚环中, 合成一类新型的吲哚-6-酰腙化合物, 以期为新药筛选提供先导化合物. 在微波辐射条件下, 以较高的产率得到14个未见报道的新化合物, 其结构均经1H NMR, IR, MS及元素分析确证, 并测试了化合物的抑菌活性.     

Structure characterization and possible biogenesis of three new families of nortriterpenoids: schisanartane, schiartane, and 18-norschiartane

Four new, highly oxygenated nortriterpenoids with unique schisanartane skeletons, micrandilactones D-G (1-4), have been isolated from the leaves and stems of Schisandra micrantha, and their structures have been elucidated on the basis of extensive spectral studies. The postulated biogenetic sequences of sixteen highly oxygenated nortriterpenoids and bisnortriterpenoids with new skeletons from three Schisandra species are discussed and have been compared from a chemotaxonomic standpoint.     

New sterols and triterpenoids from four edible mushrooms

Four edible mushrooms, Panellus serotinus, Lepista nuda, Tricholoma matsutake and Naematoloma sublateritium, have been investigated chemically. Two new sterols, 5alpha,9alpha-epidioxy-(22E)-ergosta-7,22-diene-3beta,6alpha-diol (1) and 5alpha,9alpha-epidioxy-(22E)-ergosta-7,22-diene-3beta,6beta-diol (2), have been isolated from Panellus serotinus. Compound 2 was also isolated from Lepista nuda. A new sterol, 3beta,5alpha,9alpha,14beta-tetrahydroxy-(22E)-ergosta-7,22-dien-6-one (3), and compound 2 have been isolated from Tricholoma matsutake. Three new triterpenoids, sublateriols A-C (4-6), have been isolated from Naematoloma sublateritium. The structures of the new compounds were elucidated on the basis of their spectral data.     

Kinetic analysis of solid-state reactions: A new integral method for nonisothermal kinetics with the dependence of the preexponential factor on the temperature (A = A0Tn)

In this study, we have proposed a new approximation for the general temperature integral, which frequently occurs in the nonisothermal kinetics with the dependence of the preexponential factor on the temperature and has no exact analytical solution. The validity of the new approximation has been tested by some numerical analyses. As the solution of the general temperature integral, the new approximation is more accurate than other approximations. Based on the newly proposed approximation, the corresponding integral method has been given. The precision of the integral methods for the determination of the activation energy has been calculated, and the results have shown that the relative error involved in the activation energy obtained from the new integral method is smaller than that from other integral methods. For applications, nonisothermal data obtained by theoretical simulation have been successfully processed using the new integral method.     

Novel class of non-ionic monocatenary and bolaform alkylglycoside surfactants. Synthesis by microwave-assisted glycosylation and olefin cross-metathesis or by ‘click-chemistry’: physicochemical studies

We develop herein the synthesis of a new class of monocatenary and bolaform surfactants from d-glucose, d-galactose and lactose. Two main pathways have been investigated: microwave-assisted glycosylation followed by olefin cross-metathesis, and the one-step click-chemistry methodology. Tensioactive properties of these new compounds have been studied in order to characterize the physicochemical behaviour of these new carbohydrate-based compounds in water.     

A straightforward synthesis of indole and benzofuran derivatives

A new methodology for the synthesis of indole and benzofuran derivatives has been devised. The starting materials, ortho-substituted aryl diynes, have been easily converted into new unsaturated bis-indolyl and bis-benzofuran derivatives and into 2-ethynylindole and 2-ethynylbenzofuran. Both these products have been further elaborated into more complex unsaturated indole-benzofuran and bis-benzofuran derivatives.     

Four new polyoxygenated gorgosterols from the gorgonian Isis hippuris

Four new polyoxygenated steroids (1-4) together with four known ones (5-8) have been isolated from the gorgonian Isis hippuris. The structures of the new compounds have been elucidated by spectroscopic analysis and chemical conversion. All of the new steroids showed moderate cytotoxicity against cultured NBT-T2 cells.