灯台树叶中鸭脚树叶碱型生物碱

目的：研究云南当地药材灯台树的化学成分．方法：运用硅胶柱色谱分离，光谱技术（核磁共振，红外，紫外和质谱）鉴定结构。结果：从灯台树叶中分离到4个鸭脚树叶碱类型的单萜吲哚生物碱：5β-methoxyaspidophylline（1），鸭脚树叶碱（2），鸭脚树叶醛（3），5-methoxystrictamine（4）．结论：1是一个新化合物.     

Monoterpenoid derivatives from Paeonia delavayi

Three new monoterpene glycosides, 4- O -ethylpaeoniflorin ( 1 ), 6'- O -benzoyl-4"-hydroxy-3"-methoxy-paeoniflorin ( 2 ), 6'- O -benzoylalbiflorin ( 3 ), and a new monoterpenoid, 9-hydroxy-paeonilactone-A ( 4 ) were isolated from the root cortex of Paeonia delavayi . Their structures were elucidated on the basis of spectral methods.     

Modulation of human GABAA and glycine receptor currents by menthol and related monoterpenoids

Effects of common monoterpenoid alcohols and ketones were investigated on recombinant human gamma-aminobutyric acid A (GABAA; alpha1beta2gamma2s) and glycine (alpha1 homomers) receptors expressed in Xenopus oocytes. GABA currents were enhanced by coapplications of 10-300 microM: (+)-menthol>(-)-menthol>(-)-borneol>(-)-menthone=camphor enantiomers>carvone enantiomers, with menthol acting stereoselectively. By contrast, thujone diastereomers inhibited GABAA receptor currents while glycine currents were only markedly potentiated by menthol. Positive modulation by (+)-menthol was explored given its pronounced effects (e.g., at 100 microM, GABA and glycine EC20 responses increased by 496+/-113% and 135+/-56%, respectively). (+)-Menthol, 100 microM, reduced EC50 values for GABA and glycine from 82.8+/-9.9 to 25.0+/-1.8 microM, and from 98.7+/-8.6 to 75.7+/-9.4 microM respectively, with negligible effects on maximal currents. This study reveals a novel neuroactive role for menthol as a stereoselective modulator of inhibitory ligand-gated channels.     

Chemical constituents from Teucrium viscidum

A new monoterpenoid, 4,​5,​8-​trihydroxy-​6(7)-en-​decenoic acid γ-​lactone (1) and six known compounds, 3,7-dimethyloct-1-ene-3,6,7-triol (2), 2,8-bornanediol (3), 1-(4-hydroxyphenyl)ethane-1,2-diol (4),2-(3-methoxy-4-hydroxyphenyl)-propane-1,3-diol(5), indole-3-carboxylic acid (6), and 3-hydroxy-benzenemethanol (7) were isolated from the whole parts of Teucrium viscidum. Their structures were established by a combination of spectroscopic data analysis, besides comparison with literature data. Compounds 2–7 described above were isolated from this genus for the first time.     

Terpenoids and bisbibenzyls from Chinese liverworts Conocephalum conicum and Dumortiera hirsuta

Four new monoterpene esters, 2α,5β-dihydroxybornane-2-cinnamate (1), 2α,5β-dihydroxybornane-5-acetyl-2-cinnamate (2), 2α,5β-dihydroxybornane-2-p-hydroxycinnamate (3) and 2α,5β-dihydroxy-bornane-2-cis-p-hydroxycinnamate (4), together with a known compound 3,4-dimethoxystyrene (5) were isolated from Chinese liverwort Conocephalum conicum and six known compounds, 5,7-dihydroxycalamenene (6), 7-hydroxycalamenene (7), lunularin (8), riccardin C (9), marchantin C (10) and riccardin D (11) were isolated from Dumortiera hirsuta. Their structures were elucidated by extensive spectral analysis and chemical correlations. Compounds 1 and 8 showed moderate cytotoxicity against human HepG2 cells with IC₅₀ 4.5 μg/ml and 7.4 μg/ml, respectively, while compound 8 also showed antimicrobacterial activity against Pseudomonas aeruginosa with minimum inhibitory concentration at 64 μg/ml.     

Monoterpenoid derivatives from Paeonia delavayi

Three new monoterpene glycosides, 4- O -ethylpaeoniflorin ( 1 ), 6'- O -benzoyl-4"-hydroxy-3"-methoxy-paeoniflorin ( 2 ), 6'- O -benzoylalbiflorin ( 3 ), and a new monoterpenoid, 9-hydroxy-paeonilactone-A ( 4 ) were isolated from the root cortex of Paeonia delavayi . Their structures were elucidated on the basis of spectral methods.     

中国狗牙花中一个新单萜吲哚生物碱（英文）

目的：研究中国狗牙花的化学成分。方法：采用硅胶、Sephadex LH-20、Rp-18等多种层析柱分离手段,运用NMR和HR-ESI-MS等波谱技术鉴定化合物的结构。结果：从中国狗牙花全株中分离鉴定了6个生物碱：ervachinine E（1）,rutaecarpine（2）,1-methyl-2-nonyl-4（1H）-quinolone（3）,dihydroevocarpine（4）,evocarpine（5）,1-methyl-2-[（Z）-6-unde-cenyl]-4（1H）-quinolone（6）。结论：化合物1为新的单萜吲哚生物碱,显示中等强度的抗肿瘤活性;化合物2-6为首次从该植物中分离得到。     

圆二色谱在单萜和木脂体化合物结构分析中的应用

报道了10个化合物的CD谱,其中栀子酮(1)、栀二醇(2)和木脂体(3～7)均为新化合物。应用5种规则,确定了它们的绝对构型。     

合欢皮化学成分的分离鉴定

目的；研究合欢皮的化学成分。方法：用色谱法和波谱方法对合欢皮的化学成分进行分离和结构鉴定。结果：共得到5个化合物：（－）－丁香树脂酚－4－O－β－D－呋喃芹糖基－（1→2）－β－D－吡喃葡萄糖苷（1）（6R）－2－反式－2，6－二甲基－6－O－β－D－吡喃鸡纳糖基－2，7－辛二烯酸（2）、（6S）－2－反式－2，6－二甲基－6－O－β－D－吡喃鸡纳糖基－2，7－辛二烯酸（3）、5，5′-dimethoxy-7-oxolariciressinol(4)和（－）－丁香树脂酚（5）。结论：化合物2，3和4为首次从合欢皮中分离得到的新的天然产物。     

华北白前中的新单萜成分

从华北白前(Cynanchum hancockianum)干燥根的乙醇提取物中分离得到五个单萜类化合物,其中三个新化合物的结构为4-p-樟烷-1,7,8-三醇(4-p—menthane-1,7,8-triol,Ⅲ),华北白前新甙A(neohancoside A,IV)和华北白前新甙B(neohancoside B,V)。已知化合物为4-p-樟烯-1-8,9-二醇(4-p-menthene-1-8,9-diol,I)和4-p-樟烷-1,8,9-三醇(4-p-menthane-1,8,9-triol,II)。其中化合物V以全乙酰化物形式自植物中分得。