稠杂环化合物的研究（ⅩⅤⅠ）──1－芳基－1，2，3－连三唑［4，5－e］嘧啶酮及哌啶／氢化吖辛因［1，2－b］嘧啶酮类化合物的合成

研究了１－芳基－４－乙氧羰基－５－氨基－１，２，３－连三唑（１）同甲酰胺、异氰酸磺酰氯以及内酰亚胺醚等的反应，制得５－Ｈ－１－芳基－１，２，３－连三唑［４，５－ｅ］嘧啶－４－酮（２ａ－ｃ）、５－Ｎ－甲基－１－芳基－１，２，３－连三唑［４，５－ｅ］嘧啶－４－酮（３ａ－ｃ）、１－芳基－４－乙氧羰基－５－脲基－１，２，３－连三唑（４ａ，ｂ）、５－Ｈ－１－芳基－１，２，３－连三唑［４，５－ｅ］嘧啶－４，６－二酮（５＿（ａ，ｂ））、１－苯基－１，２，３－连三唑［４，５－ｅ］哌啶［１，２－ｂ］嘧啶－４－酮（６ａ）、１－苯基－１，２，３－连三唑［４，５－ｅ］氢化吖辛因［１，２－ｂ］嘧啶－４－酮（７ａ），并经元素分析、红外、核磁共振以及质谱等方法确认了它们的结构，初步筛选了其代表特的生物活性．     

稠杂环化合物的研究（XVI）—1—芳基—1,2,3—连三唑［4,5—…

研究了１－芳基－４－乙氧羰基－５－氨基－１，２，３－连三唑（１）同甲酰胺、异氰酸磺酰氯以及内酰亚胺醚等的反应，制得５－Ｈ－１－芳香－１，２，３－连三唑［４，５－ｅ］嘧啶－４－酮（２ａ－ｃ）、５－Ｎ－甲基－１－芳基－１，２，３－连三唑［４，５－ｅ］嘧啶－４－酮（３ａ－ｃ）、１－芳基－４－乙氧羰基－５－脲基－１，２，３－连三唑（４ａ，ｂ）、５－Ｈ－１－芳基－１，２，３－连三唑［４，５－ｅ］嘧啶－４，６     

朝藿甙－C的分离和结构

从朝鲜淫羊蕾的地上部分分离得到４个化合物。经化学和光谱方法鉴定它们为：５，７，３＇－三羟基－４＇－甲氧基－８－异戊烯基黄酮醇－３－Ｏ－α－Ｌ－鼠李吡喃糖甙（Ⅰ）、ＩｃａｒｉｓｉｄｅＣ１（Ⅱ）、Ｅｐｉｍｅｄｏｋｏｒｅａｎｏｓｉｄｅ－Ⅰ（Ⅲ）和Ｄｅｓｍｅｔｈｙｌｉｃａｒｉｔｉｎ（Ⅳ）。其中Ⅰ是未见报道的新化合物，命名为朝藿甙－Ｃ；Ⅱ、Ⅲ和Ⅳ首次从该植物中获得。     

螺噻唑并咪唑类化合物的合成

由螺［５．５］十一烷－３－酮与硫脲在碘的存在下反应，生成了４，５－二氢螺［苯并［ｄ］噻唑－６－（７Ｈ），１′－环己烷］－２－胺（３），３与溴甲基苯基甲酮在苯中缩合得到相应的酮４ａ～４ｃ，然后在醇中加热环化生成二氢螺［咪唑并［２，１－ｂ］苯并［ｄ］噻唑］化合物５ａ～５ｃ。新化合物５ａ～５ｃ的分子组成及结构经元素分析、１ＨＮＭＲ、１３ＣＮＭＲ证实，其中产物５ｂ的分子结构经Ｘ－射线衍射晶体分析确认。     

1—（5‘—甲氧羰基—2’—羟基苯甲酰基（—1—（2‘—甲氧苯甲酰基）甲烷与Ac2O和HC...

邻羟基二苯甲酰基甲烷与Ａｃ２Ｏ和ＨＣ（ＯＥｔ）３反应通常是ＨＣ（ＯＥｔ）３作为酰化剂，得到３－苯甲酰基色酮。本文报道５－甲氧羰基－２－羟基苯甲酰基－（２＇－甲氧苯甲酰基）甲烷与Ａｃ２Ｏ和ＨＣ（ＯＥｔ）ｓ反应时，是Ａｃ２Ｏ而不是ＨＣ（ＯＥｔ）作为酰化剂，生成３－苯甲酰基－２－甲基色酮。其结构经ＮＭＲ、ＭＳ、ＩＲ和ＥＡ证实。并对其反应机理作了讨论。     

鳙鱼心中电子载体泛醌化合物的研究

鳙鱼（Ａｒｉｓｔｉｃｈｔｈｙｓｎｏｂｉｌｉｓ）心脏提取物经硅胶柱色谱分离、制备薄层色谱纯化，得到二种泛醌化合物，用ＮＭＲ、ＩＲ、ＭＳ、ＵＶ、ＨＰＬＣ、ＴＬＣ等现代测试技术测定其化学结构为２，３－二甲氧基－５－甲基－６－１０聚异戊二烯基－１，４－苯醌（Ⅰ）和一种未见报道的新泛醌酯——２，３－二甲氧基－５－甲基－６－甲酯基－八聚异戊二烯基－１，４－苯醌（Ⅱ）。     

气相色谱-质谱法测定姜黄挥发油化学成分

采用水蒸气蒸馏法提取姜黄挥发油,用气相色谱－质谱联用技术分离和鉴定姜黄挥发油的化学成分。经计算机ＮＢＳ谱库检索,发现姜黄挥发油中至少有１５个峰,鉴定出α－姜黄烯、α－姜烯、桉叶油素和球姜酮等１５种组分;另外还有１－（３－环戊基醛）－２,４－二甲基苯、β－倍半水芹烯、大根香叶酮、大根香叶烷、顺双环［３,３,１］酮－２－烯－９－醇等成分。姜黄挥发油中主要成分为α－姜黄烯。     

铂－锇共显色衍生配合物的高效液相色谱研究

研究了Ｏｓ（Ⅱ）和４，４’二（二乙氨基）苯硫酮与Ｐｔ（Ⅱ）共显色所衍生的配合物，于ＮｕｃｌｅｏｓｉｌＣ＿８柱上，用含３×１０￣（－３）ｍｏｌ／ＬＤＬ－樟脑－１０－磺酸和０．０２ｍｏｌ／ＬＨＡｃ－ＮａＡｃ（ｐＨ３．５）的乙腈－丙酮－水（７２：５：２３，Ｖ／Ｖ）作流动相（１．０ｍＬ／ｍｉｎ）分离并检测。线性范围为０．２～４．０μｇ／ｍＬＰｔ；检测限为１．０ｎｇＰｔ。此方法已应用于抗癌药物顺铂和卡铂的分析。     

吡咯烷生物碱及相关化合物的不对称合成研究(Ⅰ)

吡咯烷生物碱及相关化合物的不对称合成研究（Ⅰ）黄培强,阮源萍（厦门大学化学系,厦门,３６１００５）关键词Ｐｒｅｕｓｓｉｎ,４－氨基－３－羟基－５－苯基戊酸,不对称合成,酰胺－α－烷基化,１．５－二苄基－４－苄氧基－２－吡咯酮（＋）－ｐｒｅｕｓｓｉｎ１...     

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、     

One new and several minor diarylheptanoids from Amomum muricarpum

A new natural diarylheptanoid, designated muricarpin, together with four diarylheptanoids were isolated from the rhizomes of Amomum muricarpum Elmer (Zingiberaceae) growing in Vietnam. Three known compounds, 1,7-bis(3,4-dihydroxyphenyl)heptan-3-yl acetate, 1-(4'-hydroxyphenyl)-7- (3″,4″-dihydroxyphenyl)heptan-3-yl acetate and 1-(3',4'-dihydroxyphenyl)-7-(4″-hydroxyphenyl)-heptan-3-one were isolated for the first time from the genus Amomum, meanwhile (5R)-5-hydroxy-1,7-bis(4-hydroxyphenyl)-heptan-3-one was found for the first time in plants. Their structures were determined using spectroscopic analyses.     

Two new phenylalkanoids from the rhizomes of Zingiber officinale

Two new phenylalkanoids, 5-hydroxy-1-(4',5'-dihydroxy-3'-methoxy-phenyl)-decan-3-one and 1-(4',5'-dihydroxy-3'-methoxy-phenyl)-dec- 4-en-3-one, were isolated from the rhizomes of Chinese ginger (Zingiber officinale Roscoe (Zingiberaceae)). The structures of these new phenylalkanoids were elucidated by chemical and physical evidence.     

New phenylalkanoids from Zingiber officinale

Two new phenylalkanoids, 3-hydroxy-1-(4'-hydroxy-3'-methoxy-phenyl)-hexan-5-one (1) and 3-hydroxy-1-(3',5'-dimethoxy-4'-hydroxyphenyl)-hexan-5-one (2) were isolated from the rhizomes of Chinese ginger (Zingiber officinale Roscoe (Zingiberaceae)). The structures of two new phenylalkanoids were elucidated by chemical and physical evidence.     

New diarylheptanoids from Amomum muricarpum ELMER

Two new diarylheptanoids, designated muricarpones A and B, together with three known diarylheptanoids, 1,7-di-(3',4'-dihydroxyphenyl)-4-hepten-3-one, 1-(3',4'-dihydroxyphenyl)-7-(4'-hydroxyphenyl)-4-hepten-3-one, and 1,7-bis(p-hydroxyphenyl)-4-hepten-3-one, were isolated from the rhizomes of Amomum muricarpum ELMER (Zingiberaceae). Their structures were determined using spectroscopic analyses.     

Alpha-glucosidase inhibitory constituents from Cuscuta reflexa

Two new compounds, 7'-(3',4'-dihydroxyphenyl)-N-[(4-methoxyphenyl)ethyl]propenamide (4), and 7'-(4'-hydroxy,3'-methoxyphenyl)-N-[(4-butylphenyl)ethyl]propenamide (5) have been isolated from Cuscuta reflexa along with five known compounds, 6,7-dimethoxy-2H-1-benzopyran-2-one (1), 3-(3,4-dihydroxyphenyl)-2-propen-1-ethanoate (2), 6,7,8-trimethoxy-2H-1-benzopyran-2-one (3), 3-(4-O-beta-D-glucopyranoside-3,5-dimethoxyphenyl)-2-propen-1-ol (6), 2-(3-hydroxy-4-methoxyphenyl)-3,5-dihydroxy-7-O-beta-D-glucopyranoside-4H-1-benzopyrane-4-one (7), reported for the first time from this species. Structures of these compounds were determined by spectral analysis. These compounds showed strong inhibitory activity against alpha-glucosidase.     

A new phenylalkanoid from the rhizomes of Zingiber officinale

A new phenylalkanoid, (E)-3-hydroxy-1-(4'-dihydroxy-3',5'-dimethoxy-phenyl)-dodecan-6-en-5-one (1) was isolated from the rhizomes of Chinese ginger (Zingiber officinale Roscoe (Zingiberaceae)). The structure of this new phenylalkanoid was elucidated by chemical and physical evidences.     

Determination of analogs of sildenafil and vardenafil in foods by column liquid chromatography with a photodiode array detector, mass spectrometry, and nuclear magnetic resonance spectrometry

Two analogs of sildenafil and vardenafil in food were detected by column liquid chromatography (LC) with a photodiode array detector. They were isolated by preparative LC; their structures were established by mass spectrometry and nuclear magnetic resonance spectrometry. One analog was found to be methisosildenafil (compound A), 5-(5-(3,5-dimethylpiperazin-1-ylsulfonyl)-2-ethoxy-phenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]-pyrimidin-7(6H)-one. It is a sildenafil analog with a dimethylpiperazine ring substituted for the methylpiperazine group. The second analog, hydroxyvardenafil (compound B) is reported for the first time in this study. Hydroxyvardenafil's International Union of Pure and Applied Chemistry name is 2-(2-ethoxy-5-(4-(2-hydroxyethyl)-piperazin-1-ylsulfonyl)phenyl)-5-methyl-7-propyl-imidazo[1,5-f][1,2,4]triazin-4(3H)-one. The novel vardenafil analog has a hydroxyl group added to the ethylpiperazine group.     

Triterpene and coumarins from Skimmia laureola

In the course of our studies on the chemical constituents of the leaves of Skimmia laureola, a new triterpene O-methyl cyclolaudenol (1) and a new coumarin, (+)-7-methoxy-6-(2'R-methoxy-3'-hydroxy-3'-methyl butyl) coumarin (2) were isolated. In addition five known coumarins, isogospherol (3), heraclenol (4), 5,8-dimethoxy coumarin-2H-1-benzopyran-2-one (5), 7-methoxy-6[2'-oxo-3'-methyl butyl] coumarin (6), and (+)-ulopterol (7) were also isolated for the first time from this plant. The structures were identified by spectroscopic studies and the stereochemistry at C-2' in compounds 3 and 4 were established by Horeau's procedure.     

Microbial metabolism. Part 7 : Curcumin

Microbial metabolism of the cancer chemopreventive agent, curcumin [(1E,6E)-1,7-bis(4-hydroxy-3-methoxyphenyl)hepta-1,6-diene-3,5-dione] (1) with Pichia anomala (ATCC 20170) yielded four major metabolites, 5-hydroxy-1,7-bis(4-hydroxy-3-methoxyphenyl)heptan-3-one (2), 5-hydroxy-7-(4-hydroxy-3-methoxyphenyl)-1-(4-hydroxyphenyl)heptan-3-one (3), 1,7-bis(4-hydroxy-3-methoxyphenyl)heptan-3,5-diol (4), 5-hydroxy-1,7-bis(4-hydroxyphenyl)heptane-3-one (5) and two minor products, 1-(4-hydroxy-3-methoxyphenyl)-7-(4-hydroxyphenyl)heptane-3,5-diol (6) and 1,7-bis(4-hydroxyphenyl)heptane-3,5-diol (7). The structures of compounds 2-5 were established on the basis of spectroscopic data. Compounds 6 and 7 were assigned tentative structures.     

Two new homoisoflavonoids from Caesalpinia pulcherrima

Two new homoisoflavonoids, (E)-7-methoxy-3-(4'-methoxybenzylidene)chroman-4-one (1) and (E)-7-hydroxy-3-(3',4',5'-trimethoxybenzylidene)chroman-4-one (5), along with three known homoisoflavonoids (Z)-7-hydroxy-3-(4'-methoxybenzylidene)chroman-4-one (isobon ducellin) (2), (E)-7-hydroxy-3-(4'-methoxybenzylidene)chroman-4-one (bonducellin) (3) and (E)-7-hydroxy-3-(2',4'-dimethoxybenzylidene)chroman-4-one (4) were isolated from the whole plant of Caesalpinia pulcherrima. The structures of these new compounds were elucidated by electron impact mass spectrometry (EI-MS) and 1D and 2D-NMR spectral studies. Antimicrobial activity of the new compounds was evaluated.