构树叶的化学成分

为研究构树叶(Broussonetia papyrifera)的化学成分，用Diaion HP-20，Toyopearl HW-40C，Sephadex LH-20，silica gel等柱色谱方法进行分离，根据其理化性质和波谱数据鉴定化合物结构。分离得到了19个化合物，分别鉴定为芹菜素(1)，芹菜素-7-O-β-D-吡喃葡糖苷(2)，柯伊利素-7-O-β-D-吡喃葡糖苷(3)，芹菜素-7-O-β-D-吡喃葡糖醛酸苷(4)，牡荆素-7-O-β-D-吡喃葡糖苷(5)，木犀草素(6)，5,7,4′-三羟基-6-C-［a-L-鼠李糖(1→2)］-β-D-葡糖黄酮碳苷(7)，5,7,4′-三羟基-8-C-［α-L-鼠李糖(1→2)］-β-D-葡糖黄酮碳苷(8)，异牡荆素(9)，牡荆素(10)，苯甲酸苯甲酯-2,6-二-O-β-D-吡喃葡糖苷(11)，(2R,3R,5R,6S,9R)-3-羟基-5,6-环氧-β-紫罗兰醇-2-O-β-D-葡糖苷(12)，(2R,3R,5R,6S,9R)-3-羟基-5,6-环氧-乙酰-β-紫罗兰醇-2-O-β-D-葡糖苷(13)，ficustriol (14)，(6S,9S)-玫瑰花苷(15)，3β-羟基-5α,6α-环氧-β-紫罗兰酮-2α-O-β-D-葡糖苷(16)，icariside B₁ (17)，sammangaoside A (18)，3-羟基-5α,6α-环氧-β-紫罗兰酮(19)。化合物11、12、13为新化合物，其余化合物为首次从该属植物中分离得到。     

中药北刘寄奴中化学成分的分离与鉴定

目的研究中药北刘寄奴(Siphonostegia chinensis Benth.)的化学成分。方法采用正相硅胶、反相ODS、Sephadex LH-20等柱色谱及高效液相色谱等手段进行分离纯化,并通过理化性质与光谱分析方法鉴定化合物的结构。结果从北刘寄奴体积分数95%乙醇提取物中分离鉴定10个单体化合物,分别为反式对羟基肉桂酸((E)-p-hydroxycinnamic acid,1)、咖啡酸(caffeic acid,2)、syring-in(3)、(7S,8R)-dehydrodiconiferyl alcohol 9'-β-glucopyranoside(4)、vanillyl alcohol-4-O-β-D-gluco-pyranoside(5)、2,6-二甲氧基-4-羟基苯酚-1-O-葡萄糖苷(2,6-dimethoxy-4-hydroxyphenol 1-O-glu-copyranoside,6)、3,5-dimethoxy-4-hydroxybenzyl alcohol 4-O-β-D-glucopyranoside(7)、rubinaphthinA(8)、rel-5-(3S,8S-dihydroxy-1R,5S-dimethyl-7-oxa-6-oxobicyclo[3,2,1]-oct-8-yl)-3-methyl-2Z,4E-pentadienoic acid(9)、(6S,9R)-roseoside(10)。结论化合物2～10为首次从阴行草属植物中分离得到。     

杜仲叶中倍半萜及降碳倍半萜的分离与鉴定

目的研究植物杜仲(Eucommia ulmoides Oliver)叶中的化学成分。方法综合运用硅胶柱色谱、反相硅胶柱色谱和Sephadex LH-20凝胶柱色谱以及制备型高效液相色谱等方法进行系统分离,根据化合物的理化性质及其波谱数据确定化合物的结构。结果从杜仲叶80%(体积分数)乙醇提取物中分离得到了12个倍半萜和降碳倍半萜类化合物,分别鉴定为(3S,5R,6R,7E,9R)-megastigman-7-ene-3,5,6,9-tetrol(1)、(3S,5R,6R,7E,9S)-megastigman-7-ene-3,5,6,9-tetrol(2)、(3R,5R,6R,7E)-3,5,6-trihydroxy-7-megastigmen-9-one(3)、(3S,5R,6R,7E)-3,5,6-trihydroxy-7-megastigmen-9-one(4)、cis-3,4-dihydroxy-β-ionon(5)、3-hydroxy-5,6-epoxy-β-ionol(6)、(S)-3-hydroxy-8-ionone(7)、(6R,9S)-9,10-dihydroxy-4-megastigmen-3-one(8)、cucumegastigmane I(9)、(-)-菜豆酸(10)、(-)-2E-菜豆酸(11)、蚱蜢酮(12)。结论化合物11为新化合物,2~10和12为首次从杜仲中分离得到。     

Two new dammarane triterpene glycosides from the rhizomes of Panax notoginseng

Two new dammarane triterpene glycosides named notoginsenosides Rw 1 (1) and Rw 2 (2) were isolated from the rhizomes of Panax notoginseng, together with 20 known compounds including protopanaxadiol (3), protopanaxatriol (4), ginsenosides Rb1 (5), Rd (6), Re (7), Rg1 (8), Rg2 (9), 20-(S)-Rg3 (10), 20-(R)-Rg(3) (11), Rh1 (12), Rh4 (13), Rf (14), 20-O-glucopyranosyl Rf (15), notoginsenosides R1 (16), R2 (17), T5 (18), S (19), T (20), and Fa (21), and koryoginsenoside R1 (22). Based on FABMS, HRFABMS, IR, (1)H, 13C, and 2D-NMR (HSQC, HMBC, and COSY) spectral data, the structures of the new compounds were elucidated as 6-O-beta-d-xylopyranosyl-20-O-beta-d-xylopyranosyl-(1 --> 6)-beta-d-glucopyranosyldammar-24-ene-3beta,6alpha,12beta,20(S)tetraol (1) and 6-O-beta-d-xylopyranosyl-(1 --> 2)-beta-d-glucopyranosyldammar-22-ene-(trans)-3beta,6alpha,12beta,20(S), 25-pentaol (2). Compounds 3, 4, 13, and 22 were isolated from P. notoginseng for the first time.     

烈味脚骨脆的化学成分研究

目的：研究烈味脚骨脆的化学成分。方法利用硅胶柱色谱、高效液相等技术对烈味脚骨脆甲醇提取物进行分离纯化,通过波谱数据鉴定结构。结果从烈味脚骨脆中共分得7个化合物,分别鉴定为：balanspene B （1）、balanspene E（2）、rel －（2S,5R,8S,9S,10R,18S,19R）－18,19－diacetoxy －18,19－epoxy －2－（2ξ－methylbu-tanoy loxy）cleroda －3,13（16）,14－triene（3）、balanspene G（4）、caseabalansin G（5）、caseabalansin F（6）、caseamem-brin U（7）。结论化合物1～7均为首次从该植物中分离得到。     

Isolation and identification of chemical constituents from Taxus cuspidta Sibe et Zucc

Three compounds were isolated from the extract of Taxus cuspidta Sibe et Zucc with the column chromatography on silica gel and preparative HPLC methods. Their structures were identified according to the physicochemical properties and spectral analysis, and they were identified as (E)-1-methoxy-2-O-(p-coumaroyl)-myo-inositol (1), 2-deacetoxy-7beta, 9a, 10beta-trideacetyltaxinine J (2) and (3aS, 4aR, 6S, 8S, 8aS, 9R, 10R, 10aS)-benz[f]azulene-6, 8, 9, 10 (3H)-terol, 3a, 4, 4a, 5, 6, 7, 8, 8a, 9, 10-decahydro-10a-(1-hydroxyl-1-methylethyl)-1, 8a-dimethyl-5-methylene (3). Among them, compound 1 was a new compound, and compounds 2, 3 were two novel natural products.     

Sesquiterpene lactones from Inula hookeri

Four new sesquiterpene lactones, (1 S,5 R,6 S,7 S,8 R,9 R,10 S,11 S)-6-acetoxy-9-hydroxy-4-oxo-pseudoguai-2(3)-en-12,8-olide, (1 S,2 R,5 R,6 S,7 R,8 S,10 R)-6-acetoxy-2-ethoxy-4-oxo-pseudoguai-11(13)-en-12,8-olide, (1 S,2 R,5 R,6 S,7 R,8 S,10 R)-6-acetoxy-2-hydroxy-4-oxo-pseudoguai-11(13)-en-12,8-olide, and 14-acetoxy-1 β,5 α,7 αH-4 β-hydroxy-guai-9(10),11(13)-dien-12,8 α-olide, along with 26 known sesquiterpene lactones, were isolated from the whole plants of Inula hookeri C. B. Clarke. Their structures were established based on spectroscopic methods including HRESIMS, 1D and 2D NMR, and CD techniques. All compounds were evaluated for their cytotoxic activities against HepG2, HeLa, PC-3, and MGC-803 cell lines by CCK-8 assay. Some of the isolates, especiallly pseudoguaianolides and guaianolides, exhibited significant cytotoxicities against these four examined cell lines.     

Norsesquiterpenoid glucosides and a rhamnoside of pyrrolizidine alkaloid from Tephroseris kirilowii

Four new glycosylated compounds have been isolated from the whole plant of Tephroseris kirilowii, including (-)-(1R,5R,6S,7R,8S)-8-O-beta-D-glucopyranosyloxy-7-hydroxy-6-(2-hydroxypropan-2-yl)-9-methylenebicyclo[4.3.0]non-3-one (tephroside A, 1), (-)-(1R,5R,6R,8R)-6-(2-O-beta-D-glucopyranosyloxypropan-2-yl)-8-hydroxy-9-methylenebicyclo[4.3.0]non-3-one (tephroside B, 2), thesinine-4'-O-alpha-L-rhamnoside (3), and p-coumaric acid 4-O-alpha-L-rhamnoside (4), together with the known roseoside. The structures of the new compounds were established by means of spectroscopic analysis.     

鸡血藤化学成分的分离与结构鉴定

目的对中药鸡血藤(Spatholobus suberectus Dunn)中化学成分进行分离及结构鉴定。方法采用正相硅胶、反相ODS、Sephadex LH-20等柱色谱及高效液相色谱等手段进行分离纯化,并通过理化性质与波谱分析方法鉴定了化合物的结构。结果从鸡血藤体积分数为95%的乙醇提取物中分离鉴定了9个单体成分,分别为blumenol A(1)、(6S,7E,9R)-roseoside(2)、(6S,7E,9R)-6,9-dihydroxy-4,7-megastigman-3-one-9-O-[α-L-arabinopyranosyl-(1→6)-(β-D-glucopyranoside](3)、7S,8R-erythro-4,9,9'-trihydroxy-3,3'-dimethoxy-8-O-4'-neolignan-7-O-β-D-glucopyranoside(4)、(7S,8R)-dihydrodehydrodiconiferyl alcohol-4-O-(β-D-glucopyranoside(5)、(7S,8R)-3,3',5-trimethoxy-4',7-epoxy-8,5'-neolignan-4,9,9'-triol(6)、次黄苷(hypoxanthine-9-β-D-ribofuranoside,7)、烟酸(nicotinic acid,8)和丁二酸(amber acid,9)。结论其中2-8均为首次从密花豆属中分离得到的化合物。     

温郁金挥发油的化学成分

目的对温郁金(Curcuma wenyujin)挥发油的化学成分进行研究。方法采用硅胶柱色谱、正反相MPLC及HPLC等进行分离纯化,通过波谱分析鉴定其结构。结果从温郁金挥发油中分离得到10个化合物,鉴定为莪术醇(1)、莪术二酮(2)、(4S,5S)-germacrone-4,5-epoxide(3)、germa-crone-1,10-epoxide(4)、新莪术二酮(5)、(5R,6R,7αR)-5-isopropenyl-3,6-dimethyl-6-vinyl-5,6,7α-tetrahydro-4H-enzofuran-2-one(6)、hydroxyisogermafurenolide(7)、(5R,6R,7aS)-5-isopropenyl-3,6-dimethyl-6-vinyl-5,6,7,7-αtetrahydro-4-Hbenzo-furan-2-one(8)、脱-氢1,8-桉叶素(9)、p-menth-2-ene-1,8-diol(10)。并通过核磁共振手段对其碳氢信号进行了全归属。结论化合物6、7为新的天然产物;化合物4、8、10为首次从该属植物中分离得到;化合物4、6、7、8、10为首次从该种植物中分离得到。     

南重楼Paris vietnamensis活性物质的分离与鉴定

目的研究南重楼Paris vietnamensis (Takht.)中具有细胞毒活性的甾体皂苷类化学成分。方法采用柱色谱进行分离纯化，通过光谱分析和理化方法鉴定化合物结构，并进行体外细胞毒活性筛选。结果从南重楼中分离得到11个甾体皂苷类化合物，化合物1结构为：3β,5α,6α-三羟基-7(8)-烯-异螺甾烷醇-3-氧-β-D-葡吡喃糖基(1→3)［α-L-鼠李吡喃糖基(1→2)］-β-D-葡吡喃糖苷(1)，命名为南重楼皂苷A。化合物2～11分别为：25(R)-薯蓣皂苷元-3-氧-α-L-阿拉伯呋喃糖基(1→4)-β-D-葡吡喃糖苷(2)；25(R)薯蓣皂苷元-3-氧-α-L-鼠李糖吡喃基(1→2)-β-D-葡吡喃糖苷(3)；25(R)薯蓣皂苷元-3-氧-α-L-阿拉伯呋喃糖基(1→4)［α-L-鼠李吡喃糖基(1→2)］-β-D-葡吡喃糖苷(4)；25(R)薯蓣皂苷元-3-氧-β-D-葡吡喃糖基(1→3)［α-L-鼠李吡喃糖基-(1→2)］-β-D-葡吡喃糖苷(5)；25(R)薯蓣皂苷元-3-氧-α-L-鼠李吡喃糖基(1→4)-α-L-鼠李吡喃糖基(1→4)［α-L-鼠李吡喃糖基(1→2)］-β-D-葡吡喃糖苷(6)；25(R)偏诺苷元-3-氧-α-L-阿拉伯呋喃糖基(1→4)-β-D-葡吡喃糖苷(7)；25(R)偏诺苷元-3-氧-α-L-鼠李吡喃糖基(1→2)-β-D-葡吡喃糖苷(8)；25(R)偏诺苷元-3-氧-α-L-阿拉伯呋喃糖基(1→4)［α-L-鼠李吡喃糖基(1→2)］-β-D-葡吡喃糖苷(9)；25(R)偏诺皂苷元-3-氧-β-D-葡吡喃糖基(1→3)［α-L-鼠李吡喃糖基(1→2)］-β-D-葡吡喃糖苷(10)；25(R)偏诺苷元-3-氧-α-L-鼠李吡喃糖基(1→4)-α-L-鼠李吡喃糖基(1→4)［α-L-鼠李吡喃糖基(1→2)］-β-D-葡吡喃糖苷(11)，体外筛选表明部分甾体皂苷类化合物具有细胞毒作用。结论化合物1为一新化合物，化合物2，3，6～11均为首次从南重楼中获得。化合物3，4，6，8具有对肝癌HepG2和胃癌SGC-7901的细胞毒活性。     

荷叶中化学成分的分离与鉴定

目的研究荷叶中的化学成分。方法采用正相硅胶、反相ODS、Sephadex LH-20等柱色谱及PHPLC法进行分离纯化,并通过理化性质、光谱分析方法及与文献对比,鉴定化合物的化学结构。结果从荷叶体积分数为70%的乙醇提取物中分离鉴定了8个化合物,其中有4个木脂素类:(+)-松脂醇[(+)-pinoresinol,1]、(+)-表松脂醇[(+)-epipinoresinol,2]、sylvatesmin(3)、(+)-异落叶松树脂醇[(+)-isolariciresinol,4];4个降倍半萜类:(3S,5R,6S,7E)-5,6-epoxy-3-hydroxy-7-me-gastigmen-9-one(5)、4,5-dihydroblumenol A(6)、(E)-3-oxo-retro-α-ionol(7)、(3S,5R,6R,7E,9S)-megastigman-7-ene-3,5,6,9-tetraol(8)。结论化合物1-8均为首次从莲属植物中分离得到。     

Non-taxane compounds from the bark of Taxus yunnanensis

From the bark of Taxus yunnanensis , 15 non-taxane compounds were isolated. Through spectroscopic methods such as 1D and 2D NMR and MS experiments, one of them was determined as a new abietane-type diterpenoid named taxayunnin ( 1 ). The other 14 known compounds were identified as taxamairin C ( 2 ), taxamairin A ( 3 ), 3 g -hydroxy-sandaracopimaric acid ( 4 ), (+)-3-hydroxy-isodrimenin ( 5 ), rubrosterone ( 6 ), ponasterone A ( 7 ), ecdysterone ( 8 ), 20-hydroxy-echysone-20,22-monoacetonide ( 9 ), 7-oxositosterol ( 10 ), stigmast-4-en-6 g -ol-3-one ( 11 ), 5 f ,6 g -dihydroxy-daucosterol ( 12 ), g -sitosterol ( 13 ), daucosterol ( 14 ), 1- O - g - d -glucopyranosyl-(2 S , 3 R , 4 E , 8 Z )-2- N -(2'-hydroxypalmitoyl)-octadeca-sphinga-4,8-dienine ( 15 ), respectively. Compounds 4 - 6 , 9 - 12 and 15 were isolated from Taxus plants for the first time.     

A new bisabolane sesquiterpenoid from Euphorbia chrysocoma

The new sesquiterpenoid (6R)-2-chloro-6-[(1S)-1,5-dimethylhex-4-en-1-yl]-3-methylcyclohex-2-en-1-one (1), together with ten known compounds, (6R)-6-[(1S)-1,5-dimethylhex-4-en-1-yl]-3-methylcyclohex-2-en-1-one (2), bauerenol acetate (3), lupenone (4), alpha-amyrenone (5), beta-sitosterol (6), stigmasterol (7), beta-amyrin (8), ursolic acid (9), betulinic acid (10), scopolin (11), have been isolated from the roots of Euphorbia chrysocoma Lévl. et Vant. Their structures have been elucidated by spectroscopic data.     

Sesquiterpenes from Dysoxylum oliganthum and Dysoxylum excelsum

Three new sesquiterpenes (1-3), (6R,7S,11R,10S)-15-hydroxy-sesquisabinene hydrate (1), (6R,7R,11S,10S)-15-hydroxy-sesquisabinene hydrate (2), and (6R,7R,10S)-15-hydroxy-zingiberenol (3), along with three known compounds, were isolated from the stems of Dysoxylum oliganthum; and three new isodaucane (salvionane) sesquiterpenes, namely isodauc-6-ene-10β,14-diol (4), 4-epi-isodauc-6-ene-10β,14-diol (5), and 4-epi-6α,10β-dihydroxy-artabotrol (6) together with 15 known compounds were isolated from the twigs and leaves of D. excelsum. Their structures were established on the basis of extensive spectroscopic analysis and chemical shifts. The absolute configuration of C-10 in compounds 1-3 of a rare class was determined by using Snatzke's method.     

New sesquiterpene lactone and neolignan glycosides with antioxidant and anti-inflammatory activities from the fruits of Illicium oligandrum

Phytochemical investigations of the fruits of Illicium oligandrum resulted in a new sesquiterpene lactone, 3 beta-benzoyloxy-10-deoxyfloridanolide (1), and three new neolignan glycosides, including two dihydrobenzofuran neolignan glycosides, (7 R,8 S)-9-O-beta-D-xylopyranosyl-9'-O-alpha- L-rhamnopyranosyl-(1-->6)-beta-D-glucopyranosyldihydrodehydrodiconiferyl alcohol (2) and (7 R,8 S)-9-O-shikimoyl-4-O-beta-D-glucopyranosyldihydrodehydrodiconiferyl alcohol (3) and one 8- O-4' neolignan glycoside, (7 S,8 R)-1-[4-O-(beta-D-glucopyranosyl)-3-methoxyphenyl]-2-[4-(3-hydroxypropyl)-2,6-dimethoxyphenoxy]-1,3-propanediol (4), together with three known sesquiterpene lactones (5 - 7) and two known neolignan glycosides (8 and 9). Their structures were elucidated on the basis of 1D, 2D NMR, HR-MS and chemical evidence. Compounds 3 and 4 showed moderate antioxidant activity with the inhibitory rates 13.30% and 9.30% at 1.0 x 10(-5) M, respectively. Compounds 3 and 9 exhibited anti-inflammatory activity with the inhibitory rates 67.0% and 51.0% at 1.0 x 10(-5) M, respectively.     

Non-taxane compounds from the bark of Taxus yunnanensis

From the bark of Taxus yunnanensis, 15 non-taxane compounds were isolated. Through spectroscopic methods such as ID and 2D NMR and MS experiments, one of them was determined as a new abietane-type diterpenoid named taxayunnin (1). The other 14 known compounds were identified as taxamairin C (2), taxamairin A (3), 3beta-hydroxy-sandaracopimaric acid (4), (+)-3-hydroxy-isodrimenin (5), rubrosterone (6), ponasterone A (7), ecdysterone (8), 20-hydroxy-echysone-20,22-monoacetonide (9), 7-oxositosterol (10), stigmast-4-en-6beta-ol-3-one (11), 5alpha,6beta-dihydroxy-daucosterol (12), beta-sitosterol (13), daucosterol (14), 1-O-beta-D-glucopyranosyl-(2S, 3R, 4E, 8Z)-2-N-(2'-hydroxypalmitoy])-octadeca-sphinga-4,8-dienine (15), respectively. Compounds 4-6, 9-12 and 15 were isolated from Taxus plants for the first time.     

Speciosaperoxide, a new triterpene acid, and other terpenoids from Chaenomeles speciosa

Investigation on the EtOH extract of the fruits of Chaenomeles speciosa led to the isolation of a new triterpene acid bearing an unusual hydroperoxyl substitute group at C-11, speciosaperoxide (1), along with six known triterpenoids, 3beta-acetoxyurs-11-en-13beta,28-olide (2), 3-O-acetyl ursolic acid (3), oleanolic acid (4), ursolic acid (5), masilinic acid (6), and tormentic acid (7), and three known norsesquiterpenoids, roseoside (8), vomifoliol (9) and (6S,7E,9R)-6,9-dihydroxy-4,7-megastigmadien-3-one 9-O-[beta-d-xylopyranosyl (1 --> 6)-glucopyranoside] (10). Their structures were elucidated on the basis of spectroscopic data and comparison with reference data. Besides compound 1, compounds 2, 8-10 were obtained from this genus for the first time. None of these compounds exhibited inhibitory activity against T-and B-lymphocyte proliferation.     

Sesquiterpenes from the aerial parts of Artemisia vestita Wall.

A chemical investigation of the aerial parts of Artemisia vestita Wall. led to the isolation of 12 known sesquiterpenes, including 2 furan-containing sesquiterpenoids and 10 eudesmane sesquiterpene lactones. Their structures were identified as negunfurol (1), schensianol A (2), artemine (3), erivanin (4), 1,5-diepi-artemin (5), acetylartemin (6), naphtho[1,2-b]furan-2(3H)-one, 6-(acetyloxy)decahydro-9a-hydroxy-3,5a-dimethyl-9-methylene-(3S,3aS,5aS,6S,9aS,9bS) (7), naphtho[1,2-b]furan-2(3H)-one, 6-(acetyloxy)-3a,4,5,5a,6,7,8,9b-octahydro-8-hydroxy-3,5a,9-trimethyl- (3S,3aS,5aR,6S,8S,9bS) (8), isoerivanin (9), barrelierin (10), (11S)-1-oxoeudesm-4(14)-eno-13,6α-lactone (11), 1-epi-dehydroisoeranin (12), respectively. All of these compounds were isolated from Artemisia vestita for the first time, and compounds 1 and 2 were isolated from the genus Artemisia for the first time.     

海洋来源真菌草酸青霉(Penicillium oxalicum)次级代谢产物的分离与鉴定

目的研究海洋来源真菌草酸青霉(Penicillium oxalicum)的次级代谢产物。方法采用重结晶、硅胶柱色谱、Sephadex LH-20柱色谱、开放ODS柱色谱等方法进行分离纯化;根据理化性质及光谱数据确定化合物的结构。结果分离得到10个化合物,分别鉴定为N-acetyl-hydrazinobenzoic acid(1)、N-[2-cis-(4-hydroxyphenyl)ethenyl]formamide(2)、p-hydroxyphenylacetamide(3)、penipanoid A(4)、penipanoid C(5)、2-(4-hydroxybenzyl)quinazolin-4(3H)-one(6)、oxaline(7)、meleagrin(8)、(3R,4R)-3,4,8-trihydroxy-3,4-dihydro-1(2H)-naphthalenone(9)和(3R,4R)-3,4,6,8-tetrahydroxy-3,4-dihydro-1(2H)-naphthalenone(10)。结论化合物1为新天然产物,化合物9、10为首次从青霉属真菌中分离得到。