海南粗榧新碱类似物芳环的反常氢化反应（英文）

报道了海南粗榧新碱类似物芳环的一种反常氢化反应，并提出了可能的反应机理。     

A generalization of the concept of <Emphasis Type="Italic">q</Emphasis>-fractional integrals

In this paper, we consider the fractional q-integral with variable lower limit of integration. We prove the semigroup property of these integrals, and a formula of Leibniz type. Finally, we evaluate fractional q-integrals of some functions. The consideration of q-exponential function in that sense leads to q-analogs of Mittag-Leffier function.     

核苷类似物5-杂环取代或1,5-二杂环取代-1-α/β-D-5脱氧呋喃核糖的合成

核糖在酸的作用下于甲醇中闭环得到呋喃核糖甲苷,将其2,3-二羟基形成异亚丙基后,与对甲苯磺酰氯作用生成5-O-对甲苯磺酰基-2,3-O-异亚丙基-1-α/β-D-呋喃核糖甲苷,最后与取代哌嗪或吗啉反应,再在酸的作用下除去2,3-保护基,得到5-脱氧-5-杂环取代-1-α/β-D-呋喃核糖甲苷.它们的结构经~1H NMR和MS确证.     

新型含氟姜黄素类似物的合成、晶体结构及抗肿瘤活性

采用活性基团拼接法将含氟苯甲醛与酮反应, 合成了5个含氟单羰基姜黄素类似物, 结构经IR, ¹H NMR及ESI-MS确认. 对所合成的化合物进行了抗肿瘤活性测试(MTT法), 结果表明, 部分化合物对肿瘤细胞有较强的选择性抑制活性, 其中2,6-二(4-氟亚苯基)环己酮(3a)和2,6-二(2-氟亚苯基)环己酮(3b)的抗肿瘤谱广, 活性较好, 就此对化合物3b作了单晶培养, 并就晶体结构进行了X衍射分析. 结构表明化合物3b属三斜晶系, 空间群 P-1. 晶胞参数 a＝0.9222(2) nm, b＝0.9732(2) nm, c＝1.0127(2) nm, α＝88.920(4)°, β＝75.672(3)°, γ＝62.404(3)°, V＝0.7755(3) nm³, Z＝2, D_c＝1.329 Mg•m^－3, μ＝0.097 mm^－1, F(000)＝324, 最终偏离因子R＝0.0590, wR＝0.1841.     

合成抗敏低聚核苷酸

介绍了抗敏低聚核苷酸抑制基因表达的机理，以此为基础的抗敏低聚核苷酸技术是治疗病毒性疾病和癌症的重要手段。由于天然低聚核苷酸存大着许我内在缺陷，本文着重介绍近几年来人工合成核苷酸类似物的成就。     

支载型分子印迹聚合物膜的制备及其透过选择性研究

以2-氨基吡啶为模板,采用聚四氟乙烯微孔膜为支载膜,甲基丙烯酸为功能单体,偶氮二异丁腈为引发剂,紫外光引发聚合,制备出支载型分子印迹膜,并研究了分子印迹膜对2-氨基吡啶及其结构类似物的透过选择性,并对甲基丙烯酸与2-氨基吡啶之间的相互作用和膜的形貌进行了表征。结果表明,甲基丙烯酸对模板分子能够形成摩尔比为1∶2的配合物,分子印迹膜能够实现2-氨基吡啶与其类似物的分离。     

Design and Synthesis of Muramyl Dipeptide Cyclic Analogue

A new conformationalloy restricted cyclic analogue of muramyl dipeptide was designed and manually synthesized by our “Meshed-Bag Gathered-Bunch” method with a combination of Fmoc,ally and N-1-(4,4-dimethyl-2,6-dioxocyclo-hexylidene) ethyl chemical protection strategy.     

Highly Efficient Regio- and Stereoselective Synthesis of β-（1 →6）-Branched β-（1 →3）-Linked Glucohexaose and Its Analogue

A β-（1→）6）-branched β-（1→）3）-linked glucohexaose （1） and its lauryl glycoside （2）, present in many biologically active polysaccharides from traditional herbal medicines such as Ganoderma lucidum, Schizophyllum commune and Lentinus edodes, were highly efficiently synthesized. Coupling of 2,3,4,6-tetra-O-benzoyl-β-D-glucopyranosyl- （1--）3）-2-O-benzoyl-4,6-O-benzylidene-a-D-glucopyranosyl trichloroacetimidate （7） with 3,6-branched acceptors 8 and 12 gave β-（1→）3）-linked pentasaccharides （9） and （13）, then via simple chemical transformation 4＇,6＇-OH pentasaccharide acceptors 10 and 14 were obtained. Regio- and stereoselective coupling of 3 with 10 and 14 gave β-（1→）3）-linked hexasaccharides （11） and （15） as the major products. Deprotection of 11 and 15 provided the target sugar 1 and 2. Thus, a new method for the preparation of this kind of compounds was developed.     

Efficient Synthesis of 2—Ethyl—A—ring Analogues of 19—Nor—1α,25—dihydroxy Vitamin D3

The novel 19-nor-1α,25-dihydroxy vitamin D3 analogues possessing an ethyl at the 2-position(4 and 5).were synthesized by coupling 25-hydroxy Windaus-Grundmann ketone derivative 20 with A-ring synthons(15 and 19)respectively.The enantioselective synthesis of substituted bicyclic[3,1,0]hexanes structure A-ring synthons,started from all-cis-3,5-dihydroxy-4-ethyl-1-(methoxycarbonyl)cyclohexane via lipase-catalyzd asymmetrization,was demonstratcd.     

含硫碳负离子的反应及其应用的研究: III, 合成戊烯二酸酯类的新方法

本文研究了在碳酸钙或碳酸钾存在下, 由Michael加成物与四氯化碳或甲苯一起加热, 以92-94%的产率得到戊烯二酸酯, 而Michael加成物与碳酸钾在上述溶剂中一起加热得70-100℃范围内, 可得到异构化的消除产物, 产率83-93%。