毛果含笑的化学成分

目的：研究木兰科植物毛果含笑(Michelia spaerantha C.Y.Wu)地上部分的倍半萜等类化学成分。方法：用硅胶柱色谱法反复进行分离纯化，根据理化性质和光谱数据鉴定其化学结构。结果：分得8个化合物，分别鉴定为9,14-二羟基-1(10),4-吉马烷型-12,8-倍半萜内酯［1(10)E,4E,8α,9β］(I)、芥子醛(II)、丁香脂素(III)、丁香醛(IV)、3,3′-二甲氧基-4,4′-二羟基-9,9′-单环氧木脂素(V)、二十九烷(VI)、十六烷酸(VII)、β-谷甾醇(VIII)。结论：化合物I为新化合物，命名为含笑内酯A。     

雷公藤中的二萜内酯类成分

目的研究雷公藤(Tripterygium wilfordii Hook.F.)的化学成分。方法应用各种色谱技术进行分离纯化，用UV，IR，¹H NMR，MS，HRMS，¹H-¹H COSY，¹H-¹³C COSY和NOESY等光谱鉴定化合物的结构。结果共分离得到4个化合物：I为16-羟基雷公藤内酯醇(16-hydroxytriptolide)，II为15-羟基雷公藤内酯醇(雷醇内酯，triptolidenol)，III为雷公藤乙素(tripdiolide)，IV为雷公藤乙素的差向异构体，命名为2-表雷公藤乙素(2-epitripdiolide)。结论化合物IV为新二萜内酯化合物。     

月腺大戟中二萜化学成分的研究

从月腺大戟(Euphorbia ebracteolata Hayata)的干燥根中首次分得4种萜类化合物,根据理化数据和光谱分析,鉴定其中2种为新的二萜内酯,分别命名为月腺大戟甲素(ebracteolatanolide A)和月腺大戟乙素(ebracteolatanolide B),另2种为已知化合物Jolkinolide B和3-乙酰α香树脂醇。     

石椒草内酯成分的研究

从芸香科松风草属植物石椒草(Boennighausenia sessilicarpa Levl)全草的乙醚提取部分分离出两个内酯化合物,经理化常数和光谱分析确定为石椒草内酯A(shijiaocaolactone A,I),芸香内酯(rutamarin,Ⅱ),其中石椒草内酯A为未见报道的新化合物。     

金钱草中黄酮苷的分离与结构鉴定金钱草中黄酮苷的分离与结构鉴定

目的从金钱草中分离制备标准品。方法用硅胶柱色谱进行分离,通过理化方法及IR,UV,MS,¹HNMR,¹³CNMR,DEPT,HMQC,HMBC等光谱分析确定化合物结构。结果从金钱草中分离得到2个化合物,分别鉴定为鼠李酮酸γ-内酯(I)、山奈酚-3-O-α-L-鼠李糖(1→2)-β-D-木糖苷(II)。结论II为新化合物,命名为金钱草素,I为首次从该属植物中分离得到。     

马尾松松针中化学成分的分离与结构鉴定马尾松松针中化学成分的分离与结构鉴定

目的研究松科植物马尾松(Pinus massoniana Lamb.)松针的化学成分。方法应用色谱技术分离纯化,IR,NMR,MS等波谱方法解析化学结构。结果从马尾松松针中分离出4个化合物,分别鉴定为:3-甲氧基-9′-O-α-L-鼠李糖基-4′:7,5′:8-二氧环新木脂素-4,9-二醇(命名为massonianoside E,I),4,4′,8,8′,9-五羟基-3,3′-二甲氧基-7,9′-单环氧木脂素(II),伞花内酯(III),4-(4′-羟基-3′-甲氧基苯基)-2-丁酮(IV)。结论化合物I为新化合物,II,III和IV为首次从松科植物中分离得到。     

穿心莲中两种新的二萜内酯甙的分离和结构测定

本文报道了自穿心莲(Andrographis paniculata Nees)醇提取物中分得两种新的二萜内酯甙:14-去氧穿心莲内酯甙(14-deoxyandrographoside)[Ⅴ]及穿心莲内酯甙(andrographoside)[Ⅶ]。经紫外光谱、红外光谱、质谱及核磁共振氢谱分析,水解及衍生物的制备证明[Ⅴ]为14-去氧穿心莲内酯-19-β-葡萄糖甙,[Ⅶ]为穿心莲内酯-19-β-葡萄糖甙。     

管花马兜铃化学成分的研究

从管花马兜铃(Aristolchia tubflora Dunn)中分得一个新化合物,经光谱(IR,UV,HRMS,HNMR,NOEDS)鉴定为9,1O-二羟基-8-甲氧基-3,4-亚甲二氧基菲-1-羧酸-内酯,命名为马兜铃菲内酯I;另七个马兜铃菲类化合物是马兜铃酸Ⅰ,Ⅱ,Ⅲa,Ⅶa,马兜铃内酰胺Ⅰ,Ⅱ及青木香酸。     

雷公藤叶中二萜化合物的研究

从雷公藤(Tripterygium wilfordii)叶中分离出九个二萜化合物,经物理常数测定、化学反应、以及波谱数据分析,分别鉴定为雷公藤内酯酮(triptonide,1)、雷公藤内酯醇(triptolide,2)、雷公藤内酯二醇(tripdiolide,3);雷醇内酯(triptolidenol,4)、16-羟基雷公藤内酯醇(16-hydroxytriptolide,5)、雷公藤氯内酯醇(tripehlorolide,6)、雷藤内酯三醇(triptriolide,7),以及新化合物雷公藤内酯二醇酮(tripdiotolnide,8)和13,14-环氧9,11,12-三羟雷公藤内酯(13,14-epoxide 9,11,12-trihydroxytriptolide,9)。新化合物的生物活性正在研究。     

三棱的化学成分

为研究中药三棱(Sparganium stoleniferum Buch.-Ham)的化学成分，利用柱色谱技术进行分离纯化，得到5个化合物，根据理化性质、光谱数据鉴定其结构为：β-谷甾醇棕榈酸酯(I)、三棱双苯内酯(II)、三棱二苯乙炔(III)、6，7，10-三羟基-8-十八烯酸(IV)和胡萝卜苷棕榈酸酯(V)。化合物II、III为两个新化合物。     

番荔枝化学成分研究

从番荔枝(Annona squamosa)中分离得到12个化合物,分别鉴定为liriodenine(AS—1),穆坪马兜铃酰胺(moupinamide,AS-2),-(-)-kauran-16α-01-19-oic acid(AS-3),16β,17-dihydroxy-(-)-kauran-19-oic acid(AS-4),anonaine(AS-5),16α,17-dihydroxy-(-)-kauran-19-oic acid(AS-6),(-)-isokaur-15(16)-en-17,19-dioic acid(AS-7),番荔枝酰胺squamosamide(AS-8),16α-methoxy-(-)kauran-19-oicacid(AS-9),sachanoic acid(AS-10),(-)-kauran-19-al-17-oic acid(AS-11),daucosterol(AS-12)。其中,番荔枝酰胺(AS-8)是新化合物,AS-9是第一次从植物中得到的天然产物。     

傣药黑面神内生菌 Bacillus pumilus 化学成分研究

目的 研究一株从傣药黑面神（Breynia fruticosa）中分离得到的内生菌 Bacillus pumilus的化学成分。方法 采用正相硅胶柱色谱、反相硅胶柱色谱、凝胶柱色谱等方法进行分离,利用理化性质及波谱数据并结合文献对照确定化合物的结构。结果 从 Bacillus pumilus 发酵液中分离得到 23 个已知化合物,分别鉴定为12-羟基茉莉酮酸（1）、环-（色氨酸-缬氨酸）-二肽（2）、环-（色氨酸-异亮氨酸）-二肽（3）、环-（亮氨酸-异亮氨酸）-二肽（4）、环-（亮氨酸-亮氨酸）-二肽（5）、环-（亮氨酸-缬氨酸）-二肽（6）、吲哚-3-甲酸（7）、吲哚-3-甲醛（8）、黄豆醇B（9）、4,7-二羟基异黄酮（10）、4,7-二羟基-6-甲氧基异黄酮（11）、4,5,7-三羟基异黄酮（12）、对羟基苯乙酸（13）、N-(4-戊氧基)乙酰胺（14）、3-甲硫基-丙烯酸（15）、10-甲基-十一烷酸（16）、十三烷酸（17）、12-甲基-十四烷酸（18）、十五烷酸（19）、十六烷酸（20）、（Z）-9-十六烯酸（21）、10-甲基-11-羟基-正十二烷酸（22）、9, 10-亚甲基十八烷酸（23）。结论 化合物 1~8,13~23 为首次从黑面神内生菌 Bacillus pumilus 代谢产物中分离得到。 关键词： 中图分类号：     

乳香的化学成分

目的研究乳香的化学成分。方法应用色谱技术进行分离和纯化,IR,NMR,MS等波谱解析化学结构。结果从乳香中分离出6个化合物,分别鉴定为α-乙酰乳香酸(1),β-乙酰乳香酸(2),羽扇-20(29)-烯-3α-乙酰氧基-24-酸(3),α-乳香酸(4),β-乳香酸(5),11-羰基-β-乙酰乳香酸(6)。结论化合物3为新成分。     

Study of binding of 12(S)-hydroxy-5(Z),8(Z),10(E), 14(Z)-eicosatetraenoic acid to bovine serum albumin using dynamic surface tension measurements

In a recent paper,(1) we demonstrated that molecular interactions between biopolymers and other smaller molecules can be detected by means of dynamic surface tension measurements. In the present paper, we demonstrate that the same methodology can be employed for investigating dose effects and specificity of molecular interactions. Three similar lipids were chosen for this study: 12(S)-hydroxy-5(Z), 8(Z),10(E),14(Z)-eicosatetraenoic acid (12(S)-HETE-free acid), methyl 12(S)-hydroxy-5(Z),8(Z),10(E),14(Z)-eicosatetraenoate (12(S)-HETE-methyl ester), and 5(Z),8(Z),11(Z), 14(Z)-eicosatetraenoic acid (arachidonic acid-free acid). These substances were added to a fatty acid free bovine serum albumin (BSA) aqueous solution at different lipid concentrations. The characteristic tension response indicates that molecular interactions between 12(S)-HETE-free acid and BSA exist. The detected interactions are concentration dependent: at a molecular ratio of lipid to protein of 1:1, the binding of 12(S)-HETE-free acid to BSA is hydrophobic in nature; at the molecular ratio of lipid to protein of 10:1, a secondary binding occurs and is hydrophilic in nature. Similar molecular interactions were not detected between 12(S)-HETE-methyl ester or arachidonic acid-free acid and BSA, indicating that the interactions between 12(S)-HETE-free acid and BSA are specific. As an independent means, surface elasticity is used to probe the molecular interactions at the interface. In the case of 12(S)-HETE-free acid but not its methyl ester or arachidonic acid, distinct higher surface elasticities were observed at lipid concentrations in excess of a molecular ratio of lipid to protein of 1:1. This finding reinforces the above stipulations.     

Microbial transformation of glycyrrhetinic acid by Mucor polymorphosporus

Glycyrrhetinic acid (GA; 1) is one of the major constituents of a traditional Chinese medicine, the roots of Glycyrrhiza uralensis, called Gancao in Chinese. In the present paper, the biotransformation of GA by Mucor polymorphosporus (AS 3.3443) was investigated and eight metabolites were obtained. Based on their chemical and spectral data, the structures of the derivatives were respectively elucidated as 24-hydroxyglycyrrhetinic acid ( 2), 6beta-hydroxyglycyrrhetinic acid ( 3), 7alpha-hydroxyglycyrrhetinic acid ( 4), 7beta-hydroxyglycyrrhetinic acid ( 5), 3- O-acetyl-7beta-hydroxyglycyrrhetinic acid ( 6), 3-oxo-7beta-hydroxyglycyrrhetinic acid ( 7), 15alpha-hydroxyglycyrrhetinic acid ( 8), 3 -oxo -15alpha-hydroxyglycyrrhetinic acid ( 9), among which metabolites 3, 4, 6, 7 and 9 are new compounds.     

穆坪马兜铃化学成分的研究

自穆坪马兜铃(Aristolochia moupinensis Franch)根、茎中分得十三个化合物,其中化合物Ⅰ～Ⅻ经鉴定分別为马兜铃酸Ⅰ(aristolochic acid Ⅰ)(Ⅰ),尿囊素(allantoin)(Ⅱ),紫丁香酸(syringic acid)(Ⅲ),香豆酸(P-coumaric acid)(Ⅳ),马兜铃酸Ⅳ(aristolochic acid Ⅳ)(Ⅴ),β-谷甾醇(Ⅵ),木兰碱(magnoflorine)(Ⅶ),马兜铃酸Ⅳ甲醚aristolochic acid Ⅳmethyl ether(Ⅵ),棕榈酸(Ⅸ),马兜铃酸Ⅱ(aristolochic acid Ⅱ)(Ⅹ),N(Phydroxyphenethy1)P-coumaramide(Ⅺ),马兜铃酸Ⅳ甲醚甲酯(aristolochic acid Ⅳmethyl ether methyl ester)(Ⅻ),化合物ⅩⅢ为新化合物,经光谱分析和化学合成等方法证明其结构为N(P-hydroxyphenethyl)-ferulamide,命名为穆坪马兜铃酰胺(moupinamide)。初步药理试验表明穆坪马兜铃酰胺体外有抑制血小板聚集和影响血小板内前列腺素合成的作用。     

叶枯灵在大鼠尿内的代谢产物分析

大鼠ig叶枯灵后,用HPLC和TLC分离纯化尿提取液中的叶枯灵及其代谢产物,得到六个组分,经MS和UV初步鉴定为叶枯灵,苯甲酸,马尿酸和三个新化合物:肼叉-1.3-二噻茂烷,乙酰肼叉-1.3-二噻茂烷和丙酮酸缩肼叉-1.3-二噻茂烷,通过对代谢物的化学合成,进一步确证了它们的化学结构。     

Effects of di-(2-ethylhexyl)-phthalate (DEHP) and its metabolites on fatty acid homeostasis regulating proteins in rat placental HRP-1 trophoblast cells.

Di-(2-ethylhexyl)-phthalate (DEHP) is a widely used plasticizer and ubiquitous environmental contaminant. The potential health hazards, including teratogenicity, from exposure to DEHP may be related to the role of DEHP or its metabolites in the trans-activation of peroxisome proliferator-activated receptors (PPARs). Fetal essential fatty acid (EFA) homeostasis is controlled by directional transfer across the placenta through a highly regulated process, including PPAR activation. Using HRP-1 rat trophoblastic cells, the effects of DEHP and two of its metabolites, mono-(2-ethylhexyl)-phthalate (MEHP) and 2-ethylhexanoic acid (EHA), on the mRNA and protein expression of the three known PPAR isoforms (alpha, beta, and gamma), fatty acid transport protein 1 (FATP1), plasma membrane fatty acid binding protein (FABPpm), and the heart cytoplasmic fatty acid binding protein (HFABP) were investigated. This study also investigated the functional effects of exposure on the uptake and transport of six long chain fatty acids (LCFAs): arachidonic acid (AA), docosahexaenoic acid (DHA), linoleic acid (LA), alpha-linolenic acid (ALA), oleic acid (OA), and stearic acid (SA). In the presence of DEHP, MEHP, and EHA, the expression of PPARalpha, PPARgamma, FATP1, and HFABP were up-regulated in a dose- and time- dependent manner, while PPARbeta and FABPpm demonstrated variable expression. The uptake rates of EFAs (AA, DHA, LA, ALA) increased significantly upon exposure, and the transport of AA (omega-6) and DHA (omega-3) were directionally induced. These results suggest that DEHP, MEHP, and EHA can influence EFA transfer across HRP-1 cells, implying that these compounds may alter placental EFA homeostasis and potentially result in abnormal fetal development.     

小青杨树皮抗菌活性成份的研究

<正> 小青杨(Populus pseudosimonii kitag.)系杨柳科(Salicaceae)杨属植物,我国东北各地广有分布。据文献记载:“小青杨苦寒无毒,主治顽癣疮毒”。近年来,内蒙古自治区昭盟赤峰县老府公社兽医站首先试用小青杨树皮注射剂(由水醇法所制粗制剂)治疗家畜泌尿道感染和菌痢等收到良好效果。后来,民间用其粗制剂口服治疗人体泌尿道感染和菌痢等也收到良好效果。在此基础上,赤峰县二医院对小青杨粗     

青钱柳地上部分的化学成分研究

从青钱柳Cyclocarya paliurus(Batal)ljinskaja.地上部分分离出14个化合物,通过NMR波谱方法和理化性质考察分别鉴定为山柰酚(1),山柰酚-3-O-α-L-吡喃鼠李糖苷(2),山柰酚-3-O-β-D-吡喃半乳糖苷(3),山柰酚-3-O-β-D-吡喃葡萄糖苷(4),山柰酚-3-O-α-L-(4′′-E-p-香豆酰基)吡喃鼠李糖苷(5),青钱柳酸B(6),阿江榄仁酸(7),2α,3β,23-三羟基-12-烯-28-乌苏酸(8),2α-羟基乌苏酸(9),齐墩果酸(10),槲皮素(11),异槲皮苷(12),β-谷甾醇(13),胡萝卜苷(14)。化合物2、3、5和8为首次从青钱柳属中分离得到。