An efficient synthesis of 2,2′-arylmethylene bis-(3-hydroxy-5,5-dimethyl-2-cyclohexene-1-one) and 1,8-dioxooctahydroxanthenes using ZnO and ZnO-acetyl chloride

2,2'-Arylmethylene bis(3-hydroxy-5,5-dimethyl-2-cyclohexene-1-one) 4l-s produced from reaction between dimedone with various aldehydes in acetonitrile using ZnO as a catalyst;whereas in the presence of ZnO-acetyl chloride catalysts the reaction is limited to give only 1,8-dioxo-octahydroxanthenes 3a-k in very good yields.

A New Coordination Polymer Containing 4-[(8-Hydroxy-5-quinolinyl)azo]-benzenesulfonic Acid:Synthesis,Structure and Fluorescent Property

A new coordination polymer, {[CdL（en）]＇DMF}n （1, H2L = 4-[（8-hydroxy-5- quinolinyl）azo]-benzenesulfonic acid, en = ethylenediamine, DMF = N,N-dimethylformamide）, has been solvothermally synthesized and structurally characterized by single-crystal X-ray diffrac- tion, infrared （IR） spectra, elemental analysis, powder X-ray diffractions （PXRD） and thermo- gravimetric analysis （TGA）. Compound 1 crystallizes in monoclinic, space group P2Jc with a = 14.6525（9）, b = 13.3917（9）, c = 11.8838（8） A, β = 101.2290（10）°, V = 2287.2（3） A3, Z = 4, C20H24CdN6OsS, Mr = 572.91, Dc. = 1.664 mg-mm-3, F（000） = 1160, p = 1.091 mm-1, R = 0.0232 and wR = 0.0587 for 3597 observed reflections （I 〉 2σ（I））. Compound 1 exhibits a one-dimensional （1D） double-chain structure which is further connected through hydrogen bonding and π-π interactions into a three-dimensional （3D） supramolecular network. In addition, it exhibits blue fluorescence at room temperature in the solid state.

Synthesis, Structure and Properties of Two New Coordination Polymers Based on 4-[（8-Hydroxy-5-quinolinyl）azo]-benzenesulfonic Acid

Two new coordination polymers based on 4-[（8-hydroxy-5-quinolinyl）azo]-benzenesulfonic acid（H2L）,{[CdL（H2O）2]·H2O}n（1） and {[CdL（en）]·EtOH}n（2）（en=ethylenediamine）,were solvothermally synthesized and structurally characterized by single-crystal X-ray diffraction.Compounds 1 and 2 exhibit infinite 1D ladder-shaped chain structures,which are isostructural except that the two coordinating water molecules in compound 1 were replaced by one en molecule in compound 2 due to the use of different organic base.Compounds 1 and 2 were constructed into different supramolecular frameworks by hydrogen bonding and π…π stacking interactions.In addition,the fluorescent properties of compounds 1 and 2 were investigated.Furthermore,they were also investigated via IR spectral analysis,elemental analysis,powder X-ray diffraction（PXRD） and thermogravimetric analysis（TGA）.

Synthesis, Structure and Fluorescent Property of Coordination Polymer from 4-[（8-Hydroxy-5-quinolinyl）azo]-benzoic Acid

One new coordination polymer based on 4-[（8-hydroxy-5-quinolinyl）azo]-benzoic acid（H2L）, { [CdL（H20）]·H2O}n（1） was solvothermally synthesized and structurally characterized by single-crystal X-ray diffrac- tion, infrared spectrometry, elemental analysis, powder X-ray diffraction（PXRD） and thermogravimetric analysis （TGA）. In compound 1, L2- ligands link Cd（II） to form a sinusoidal ruffling layer, in which the carboxylic groups connect Cd（II） into an infinite Cd--O chain. And the layers are further stabilized by hydrogen bonding and π-π in- teractions, forming a three-dimensional（3D） supramolecular network. In addition, the fluorescent property of compound 1 was also investigated.

A New Chromone Derivative from Stellera chamaejasme L

A new chromone derivative, 3-[1- (2, 4, 6-trihydroxyphenyl) 3-di-(4-hydroxyphenyl) 1-propanone-2-yl] 5,7-dihydroxy-8-di(4-hydroxyphenyl)methyl-4H-1-benzopyran-4-one, named as isomohsenone was isolated from the roots of Stellera chamaejasme L. together with known chamaechromone. Its structure was determined by the analysis of MS and NMR data, especially 2D NMR spectra.

A New Halogenated Biindole and A New Apo-carotenone from Green Alga Chaetomorpha basiretorsa Setchell

A new halogenated biindole and a new apo-carotenone have been isolated from the ethanolic extract of the green alga Chaetomorpha basiretorsa Sethcell. On the basis of chemical and spectroscopic methods including 2D NMR technique, their structures have been elucidated as 4,4′-dichloro-5,5′-dibromo-7,7′-dimethoxy-2,2′-bi-1H-indole and 1′S*,4′R*-8-(4′-hydroxy-2′,6′,6′- trimethylcyclohex-2-enyl)-6-methyloct-3E,5E,7E-trien-2-one, respectively.

Determination of Cationic Surfactant by Laser Thermal Lens Spectrometry

A novel method for the determination of cationic surfactant by laser thermal lens spectrometry was developed. It was based on the reaction between 1-hydroxy-2-(5-nitro-2-Pyri- dylazo)-8-aminonaphthalene-3,6-disulfonic acid (5-NO2-PAH) and cationic surfactant to form 1:2 ionic association complex in a weakly basic medium (pH 9.44). The determination conditions and the mechanism were discussed. The method has been applied to the analysis of wastewater and moat water samples.

A New Oxoaporphine Alkaloid from Alphonsea Mollis Dun.

A new oxoaporphine alkaloid, 1,2-methylene-dioxy-8-hydroxy-5- oxoaporphine, was isolated from the stem barks of Alphonsea mollis . Its structure was established on the basis of spectral analysis and chemical correlation.

Behavioral Characteristics of Pharmacologically Selected Lines of Rats: Relevance to Depression

This brief review discusses the behavioral consequences of two pharmacologically selected lines of rats. Flinders Sensitive (FSL) and Flinders Resistant (FRL) Lines of rats were selected on the basis of differential hypothermic and behavioral responses to the anticholinesterase, diisopropylfluorophosphate (DFP). FSL rats are more sensitive to the hypothermic effects of cholinergic, serotonergic, and dopaminergic agonists but less sensitive to the locomotor or stereotypic effects of dopamine agonists. FSL rats exhibit greater immobility in the forced swim test and reduced social interaction compared with FRL rats, but do not differ in saccharin intake, behavior in the elevated plus maze, or responses for rewarding brain self-stimulation. The exaggerated immobility and reduced social interaction are counteracted by chronic treatment with antidepressants. Because FSL rats were more sensitive to 5-HT1A receptor agonists, high (HDS) and low (LDS) 8-OH-DPATsensitive lines were selectively bred for differential hypothermic responses to the 5-HT1A receptor agonist, 8-hydroxy-2-(di-N-propylamino)tetralin (8-OH-DPAT). HDS rats were also more sensitive to the hypothermic effects of oxotremorine, a cholinergic agonist, but selection for this response did not diverge with later selection. HDS rats exhibited greater immobility in the forced swim test than LDS rats and this correlated response could be seen early in selection (generation 3). HDS rats also showed reduced social interaction compared to LDS rats, but did not differ in behavior in the elevated plus maze. These findings confirm that selection for hypothermic responses to pharmacological agents do have behavioral consequences, notably the production of depressive-like phenotypes, which can be counteracted by chronic antidepressant treatment. Because increased 5-HT1A receptor sensitivity was common to both selected lines (FSL and HDS), neurobiological processes dependent on this receptor could contribute to the abnormal behaviors that manifest in these rat lines and thus suggesting a mechanism underlying depressive behaviors in humans. However, available human data are inconsistent with this hypothesis and suggest that other mechanisms underlie these behavioral abnormalities in HDS and FSL rats. These mechanisms as well as additional behavioral testing in these rat lines will be discussed.

羊耳蒜化学成分的研究

目的研究羊耳蒜(Liparis japonica)全草的化学成分。方法采用硅胶、ODS、Sephadex LH-20等柱色谱进行分离纯化,通过波谱学方法及与文献对照鉴定化合物结构。结果分离得到18个化合物,分别鉴定为acortatarin A(1),3β-hydroxy-5α,8α-epidioxyergosta-6,22-diene(2),13-epicupressic acid(3),3β-hydroxyolean-12-en-28-oic acid(4),白桦脂酸(5),gigantol(6),(2S)-3-O-octadeca-9Z,12Z,15Z-trienoylglyceryl-O-β-D-galactopyranoside(7),α-linolenic acid(8),hydroxydihydrobovolide(5-hydroxyl-3,4-dimethy-5-penty-12(5H)-furanone)(9),反式对羟基肉桂酸(10),(+)-丁香脂素(11),β-谷甾醇(12),2,5-二羟基-4-甲氧基-9,10-二氢菲(13),2,7-二羟基-3,4-二甲氧基菲(14),moscatin(15),山药素Ⅲ(16),亚油酸(17)和对羟基苯甲醛(18)。结论本实验首次从羊耳蒜属植物中分离得到结构独特的含吗啉片段的螺环生物碱,化合物2~11为首次从该属植物中分离得到。