裸花紫珠的化学成分研究

目的研究裸花紫珠的化学成分。方法应用各种柱层析方法分离纯化,运用光谱数据解析鉴定化合物结构。结果分离鉴定了11个化合物,分别为：2α,3α,24-三羟基-齐墩果烷-12-烯-28-酸（Ⅰ）,2α,3β,24-三羟基-齐墩果烷-12-烯-28-酸（Ⅱ）,2α,3β,19α-三羟基-齐墩果烷-12-烯-28-O-β-D-葡萄糖苷（Ⅲ）,2α,3α,19α,23-四羟基-齐墩果烷-12-烯-28-O-β-D-葡萄糖苷（Ⅳ）,岳桦素（Ⅴ）,芹菜素（Ⅵ）,木犀草素（Ⅶ）,无梗五加苷B（Ⅷ）,aurantiamide acetate（Ⅸ）,β-谷甾醇（Ⅹ）,β-胡萝卜苷（Ⅺ）。结论化合物Ⅱ～Ⅳ,Ⅷ和Ⅸ为首次从紫珠属植物中分离得到,化合物Ⅰ和Ⅴ为从裸花紫珠中首次分得。     

云南甘草中新三萜成分的研究

自云南甘草(Clycyrrhiza yunnanensis)根中分离出10个化合物,经化学方法和光谱解析,鉴定9个为五环三萜类化合物:3β,21α,24-三羟基-齐墩果-12-烯-29-羧酸(Ⅰ)、3β,21α-二羟基-齐墩果-12-烯(Ⅱ)、3β,21α,24-三羟基-齐墩果-12-烯(Ⅲ)、桦木酸(Ⅳ)、23-羟基桦木酸(Ⅴ)、齐墩果酸(Ⅵ)、3β-羟基-16-氧-11,13(18)-二烯-3O-羧酸(Ⅶ)、24-羟基甘草内酯(Ⅷ)和21α-乙酰氧基木栓烷-3-酮(Ⅸ);另一个为β-胡萝卜甙(Ⅹ)。其中Ⅰ和Ⅱ为新化合物,分别命名为云南甘草皂甙元B1和B2。其余7个是已知物,但Ⅴ和Ⅸ首次得自甘草属植物,Ⅳ,Ⅵ和Ⅷ首次自云南甘草中分离得到。     

黑柴胡中新三萜皂甙的结构鉴定

从黑柴胡(Bupleurum smithii Wolff)根中分离出10个化合物,均为首次由该植物中获得。其中二个新三萜皂甙,即柴胡皂甙k和l(saikosaponin k and l),其结构经紫外、红外、核磁共振氢谱,碳谱和质谱等波谱测定和解析,分别确定为3β,16β,23,28-四羟基齐墩果烷-11,13(18)-二烯-3-O-β-D-吡喃木糖基-(1→2)-β-D-吡喃葡萄糖基-(1→3)-β-D-吡喃呋糖甙和3β,16α,23,28,30-五羟基齐墩果烷-11,13(18)-二烯-3-O-β-D-吡喃葡萄糖基-(1→3)-β-D-吡喃呋糖甙。     

爪哇脚骨脆中三萜类化学成分研究(英文)

从大风子科植物爪哇脚骨脆的树干中分离得到11个已知三萜类化合物,经波谱解析及与文献对照方法,分别鉴定为木栓酮-2,3-内酯(1),木栓烷(2),表木栓醇(3),木栓酮(4),2α,3α,19α-三羟基-乌苏烷-12-烯-28-羧酸(5),2α,3β,19α-三羟基-乌苏烷-12-烯-28-羧酸(6),2α,3α,23-三羟基-乌苏烷-12-烯-28-羧酸(7),2α,3α,23-三羟基-齐墩果烷-12-烯-28-羧酸(8),2α,3α,19α,23-四羟基-乌苏烷-12-烯-28-羧酸(9),2α,3α,19α,23-四羟基-乌苏烷-12-烯-28-羧酸-28-O-β-D-葡萄糖酯(10),及3β,19α-双羟基-乌苏烷-12-烯-28-羧酸3-O-α-L-阿拉伯糖苷(11).其中化合物1为大风子科植物中稀有的裂环木栓烷三萜,所有化合物皆为首次从本植物中分离得到。     

柴胡皂甙q及其甙元的结构鉴定

从小叶黑柴胡(Bupleurum smithii Wolffvar;parvifolium ShanetY.Li)的根中得到3个化合物,柴胡皂甙元A和Q及柴胡皂甙q。柴胡皂甙元Q和柴胡皂甙q为新化合物,根据理化性质和波谱分析,确定其结构分别为齐墩果烷-11,13(18)-二烯-3β,16β,23,28,30-五醇和3β,16β,23,28,3O-五羟基齐墩果烷-11,13(18)-二烯-3-O-β-D-吡喃葡萄糖基(1→6)-[α-L-吡喃鼠李糖基(1→4)]-β-D-吡喃葡萄糖甙。     

通脱木叶的四种新的三萜化合物

新鲜通脱木(Tetrapanax papy-riferum)叶的室温醚提取液通过活性炭柱除去叶绿素,再反复在硅胶上层析,得到六个通脱木配质(papyriogenin),其中通脱木配质A和C为已知化合物,其余四个新的通脱木配质分别名为通脱木配质D、E、F和G。经光谱和化学反应确证它们的化学名分别为21α-羟基-3-氧代一齐墩果-11,13(18)-二烯-28-酸,3α,21α-,二羟基齐墩果-11,13(18)-二烯-28-酸,3α-羟基-21-氧代-齐墩果-12-烯-28-酸和3α,21α-二羟基齐墩果-11,13(8)-二烯-22β,28-内酯,结构式分别为:     

云南美登木愈伤组织化学成分的研究（英文）

采用RP-18中压柱、硅胶柱和Sephadex LH-20柱等色谱技术对云南美登木愈伤组织的干燥细胞和新鲜细胞提取物的乙酸乙酯部分进行分离纯化得到16个化合物。通过核磁共振和质谱等波谱技术鉴定化学结构为雷公藤内酯甲(1),雷公藤内酯乙(2), 3β,22α-二羟基齐墩果-12-烯-29-酸(3), 22α-羟基-3-氧-齐墩果-12-烯-29-酸(4), 3-表卡通酸(5),齐墩果-9(11),12-二烯-3-β-醇(6), 22α-羟基-3-氧-乌苏-12-烯-30-酸(7),雷公藤三萜酸C (8), 2α,3β-二羟基-木栓烷-29-酸(9),美登酮酸(10),3β-羟基豆甾-5-烯-7-酮(11), 7β-羟基谷甾醇(12),豆甾-4-烯-3-酮(13), β-谷甾醇(14), 1-β-D-glucpotyransyl-2,6-dimetoxi-4-propenyl-benzen (15)和腺苷(16)。除化合物10和14外,其余化合物均为首次从云南美登木植物细胞及其植株中分离得到。     

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。     

蒙古黄芪化学成分研究

目的研究蒙古黄芪的化学成分。方法采用硅胶柱色谱、凝胶柱色谱方法进行分离纯化,利用波谱分析法结合理化性质确定化合物结构。结果从蒙古黄芪的乙酸乙酯和正丁醇萃取部分中共分离得到14个化合物,分别鉴定为(6aR,11R)-9,10-二甲氧基紫檀烷-3-O-β-D-葡萄糖苷(1),(3R)-2′-羟基-3′,4′-二甲氧基异黄烷-7-O-β-D-葡萄糖苷(2),5′-羟基-3′-甲氧基异黄酮-7-O-β-D-葡萄糖苷(3),芒柄花苷(4),(6aR,11R)-3-羟基-9,10-二甲氧基紫檀烷(5),(3R)-7,2′-二羟基-3′,4′-二甲氧基异黄烷(6),5′,7-二羟基-3′-甲氧基异黄酮(7),芒柄花素(8),黄芪甲苷(9),黄芪皂苷II(10),蔗糖(11),腺嘌呤核苷(12),十六烷酸单甘油酯(13),十六烷酸(14)。结论化合物5,7,11～14为首次从黄芪属植物中分离得到,化合物6为首次从蒙古黄芪中分离得到。     

圆果甘草三萜成分的研究

从河南产圆果甘草(Glycyrrhiza squamulosa Franch.)的根中分离鉴定了五个三萜类化合物,即白桦酯酸(betulinic acid,S-8)、马其顿酸甲酯(methyl ester of macedonic acid,S-9)、黄豆醇B(soyasapoge nol B,S-10)、齐墩果13(18)-烯-22α-氯-3β,24-二醇(olean-13(18)-ene-22α-Cl-3β,24-diol,S-12)和圆果皂甙元(squasapogenol.S-11),均为首次从该植物中获得,其中S-10为首次在甘草属中发现,S-12为酸水解转变物,S-11是一个新的五环三萜类皂甙元,经光谱解析确定其结构为齐墩果-11,13(18)-二烯-3β,22β-二醇(olean-11,13(18)-diene-3β,22β-diol)。     

山楂叶的化学成分

目的对蔷薇科山楂属植物山楂(Crataegus pinnatifidaBge.)的叶子部分的化学成分进行研究。方法运用硅胶、Sephadex LH-20柱色谱?ODS柱色谱、制备HPLC等分离手段进行化学成分的分离纯化,根据理化性质及波谱数据鉴定其结构。结果从山楂叶体积分数为80%乙醇的提取物中分离得到7个化合物。分别鉴定为18,19-seco,2α,3β,-dihydroxy-19-oxo-urs-11,13(18)-dien-28-oic acid(1)、3,9-dihydroxy-megastigma-5-ene(2)、(3S,5R,6R,7E)-megatsigmane-7-ene-3-hydrox-y-5,6-epoxy-9-O-β-D-glucopyranoside(3)、(Z)-3-hexenyl-6-O-β-D-xylopyranosyl-(1″-6′)-β-D-gluco-pyranoside(β-primeveroside)(4)、苯甲酸(5)、对羟基苯丙酸(6)、反式对羟基桂皮酸(7)。结论化合物1-4为首次从该属植物中分离得到,5-7为首次从该种植物中分离得到。     

A new inositol derivative from Prenanthes macrophylla

A new chiro-inositol ester, 4-hydroxyphenylacetyl-3-d-chiro-inositol ester (1), was isolated from the whole plants of Prenanthes macrophylla Franch., along with 10 known compounds, 4-hydroxyphenylacetic acid (2), trans-ethyl caffeate (3), cis-ethyl caffeate (4), protocatechualdehyde (5), luteolin (6), luteolin-7-O-β-d-glucoside (7), 15-hydroxy-2-oxo-guai-3-en-1α,5α,6β,7α,10α,11βH-12,6-olide (8), 15-glucopyranosyloxy-2-oxo-guaia-3,11(13)-dien-1α,5α,6β,7α,10αH-12,6-olide (9), ursolic acid (10), and oleanolic acid (11). Their structures were elucidated on the basis of spectroscopic analyses including HR-ESI-MS, ESI-MS, (1)H and (13)C NMR, HSQC, HMBC, and ROESY, and chemical evidences.     

Biotransformation of oleanolic acid by Alternaria longipes and Penicillium adametzi

Microbial transformation of oleanolic acid (1) was carried out. Six transformed products (2-7) from 1 by Alternaria longipes and three transformed products (8-10) from 1 by Penicillium adametzi were isolated. Their structures were elucidated as 2α,3α,19α-trihydroxy-ursolic acid-28-O-β-d-glucopyranoside (2), 2α,3β,19α-trihydroxy-ursolic acid-28-O-β-d-glucopyranoside (3), oleanolic acid 28-O-β-d-glucopyranosyl ester (4), oleanolic acid-3-O-β-d-glucopyranoside (5), 3-O-(β-d-glucopyranosyl)-oleanolic acid-28-O-β-d-glucopyranoside (6), 2α,3β,19a-trihydroxy-oleanolic acid-28-O-β-d-glucopyranoside (7), 21β-hydroxyl oleanolic acid-28-O-β-d-glucopyranoside (8), 21β-hydroxyl oleanolic acid (9), and 7α,21β-dihydroxyl oleanolic acid (10) based on the extensive NMR studies. Among them, 10 was a new compound and compounds 5 and 8-10 had stronger cytotoxic activities against Hela cell lines than the substrate. At the same time, it was reported for the first time in this paper that the skeletons of compounds 2 and 3 were changed from oleanane to uranane and seven glycosidation products were obtained by biotransformation.     

Glyyunnansapogenins G and H: Two New Pentacyclic Triterpenoids of the 18alphaH-Oleana-9(11),12-diene Type from Glycyrrhiza yunnanensis Roots

Two new pentacyclic triterpenoid sapogenins of the 18alpha H-oleana-9(11),12-diene type named glyyunnansapogenins G and H were isolated from the roots of GLYCYRRHIZA YUNNANENSIS Cheng f. et L. K. Tai. Their structures were elucidated as 18alpha H-oleana-9(11),12-diene-3beta,21alpha,29-triol and 18alpha H-3beta,21alpha-dihydroxyoleana-9(11),12-dien-29-oic acid, respectively, by spectroscopic methods. This is the first report of the occurrence of the 18alpha H series of oleana-9(11),12-diene compounds in nature.     

Two new sesquiterpene polyol esters from the root barks of Celastrus angulatus

Angulatin F (1) and angulatin I (2), two new sesquiterpene polyol esters, were isolated from the root barks of Celastrus angulatus, together with six known compounds 1β,2β-diacetoxy-4α,6α-dihydroxy-8α-isobutanoyloxy-9β-benzoyloxy-15-(α-methyl) butanoyloxy-β-dihydroagrofuran (3), angulatin A (4), angulatin B (5), celangulatin E (6), 1β,2β,15-triacetoxy-4α,6α-dihydroxy-8α-isobutanoyloxy-9β-benzoyloxy-β-dihydroagrofuran (7), and celangulin I (8). The structures of 1 and 2 were elucidated as 1β,2β,6α,15-tetraacetoxy-4α-hydroxy-8β,9α-difuroyloxy-β-dihydroagrofuran and 1β,2β,6α,8β,15-pentaacetoxy-4α-hydroxy-9β-furoyloxy-β-dihydroagrofuran by spectroscopic means.     

板栗花的化学成分

目的对板栗花的化学成分进行分离和结构鉴定。方法采用硅胶柱色谱、凝胶柱色谱和重结晶等分离方法对板栗花体积分数为90%的乙醇溶液提取物进行化学分离;通过谱学分析方法结合化合物理化性质对化合物结构进行鉴定。结果分离得到11个化合物,分别鉴定为2α,3β,23-三羟基齐墩果烷-12-烯-28-酸(2α,3β,23-trihydroxyolean-12-en-28-acid,1)、4-喹啉酮-2-羧酸-正丁基酯(4-quinolinone-carboxylic-2-acidn-butyl ester,2)、槲皮素-3-O-β-D-半乳糖苷(quercetin-3-O-β-D-ga-lactopyranoside,3)、山柰酚(kaempferol,4)、槲皮素(quercetin,5)、山柰酚-3-O[6″-O-反式-对-香豆酰基]-β-D-吡喃葡萄糖苷(kaempferol-3-O-[6″-O-(E)-p-coumaroyl]-β-D-glucopyranoside,6)、山柰酚-3-O-[2″,6″-O-双-反式-对-香豆酰基]-β-D-吡喃葡萄糖苷(kaempferol-3-O-[2″,6″-di-O-(E)-p-coumaroyl]-β-D-glucopyranoside,7)、没食子酸(gallic acid,8)、原儿茶酸(protocatechuic acid,9)、5-羟甲基糠醛(5-hydroxymethylfurfuraldehyde,10)、槲皮素3-O-β-D-葡萄糖醛酸甲酯(quercetin-3-O-β-D-glucuronide6″-methyl ester,11)。结论化合物1,2,11为从栗属植物中首次分离得到,化合物3为从该植物中首次分离得到。