肉豆蔻的化学成分研究

目的:研究肉豆蔻(Myristica fragrans Houtt)的化学成分。方法:采用反复硅胶柱色谱、Sephadex LH-20柱色谱、开放ODS柱色谱和HPLC等手段分离化合物,通过理化性质和波谱数据分析确定化合物的结构。结果:在肉豆蔻70%乙醇渗漉物中分离得到7个已知化合物,分别鉴定为:3-(3,4-二甲氧基苯基)-1,2-丙二醇(1)、反式-3,4-二甲氧基肉桂酸(2)、2-羟基-3-甲氧基-5-(2-丙烯基)苯酚(3)、去氢二异丁香酚(4)、愈创木素(5)、邻苯二甲酸(6)、熊果酸(7)。结论:化合物1～3、6为首次从肉豆蔻属植物中分离得到,化合物4、5用圆二色谱法测定了其绝对构型。     

肉豆蔻中新木脂素类化合物的定量分析

目的分析商品肉豆蔻中新木脂素类类化合物赤式-2(4烯丙基-2,6-二甲氧基苯氧基)-1-(3,5-二甲氧基-4-羟基-苯基)-丙烷-1-醇(1)、肉豆蔻木脂素(2)、(-)-(7S,8R)-爬树龙小脂素B(3)、去氢二民丁丁香油酚(4)和利卞灵B(5)的含量,为其质量评价提供科学依据.方法采川高效液相色谱法,Inertsil ODS-3色谱柱(250mm×4.6mm,5μm),流动相为四氢呋喃-乙腈-甲醇-水-冰醋酸(175151842),流速为0.8m1.·min-1,进样量为20μL,检测波长为270nm.结果化化物1～5分别为0.739～11.085,1.0～10.0,5.25～26.25,1.02～10.24,2.75～22.00μg呈现良好的线性关系;在9批次商品肉豆蔻中的含量分别为0.782～6.330,3.522～5.206,13.891～17.451,1.351～2.313,1.093～2.125mg/g生约.结论本文所建痒立方法简单,结果可靠,为肉豆蔻中非环二笨基丙醇型和苯骈呋喃型新木脂索的质量评价提供了一种办法.化合物1～5是肉豆蔻的质控成分.     

池杉的化学成分研究

目的 研究杉科植物池杉的化学成分.方法 运用硅胶、凝胶柱色谱进行分离纯化,根据波谱数据进行结构鉴定.结果 从池杉的枝叶中分离得到14个化合物.通过核磁共振谱、质谱等波谱分析手段鉴定了其中6个化合物的结构,分别为:四氢-2,4-二(4-羟基苯基)-2H-吡喃-3,5-二醇[tetrahydro-2,4-bis(4-hydroxyphenyl)-2Hpyran-3,5-diol,Ⅰ]、3,5-二(4-羟基苯基)-4-戊烯-1,2-二醇[3,5-bis(4-hydroxyphenyl)-4-pentene-1,2-diol,I]、3,5,7,3',5'-五羟基黄烷[3,5,7,3',5'-pentahydroxyflavan,Ⅲ]、4-(2,3-二氢-3-羟甲基-5-(3-羟丙基)-7-甲氧基苯并呋喃-2基)-2-甲氧基苯酚[4-(2,3-dihydro-3-hydroxymethyl-5-(3-hydroxypropyl)-7-methoxybenzofuran-2-yl)-2 methoxyphenol,Ⅳ]、2-(3,4-二甲氧基苯氧基)-四氢-6-羟甲基-2H-吡喃-3,4,5-三醇[2-(3,4-dimethoxyphenoxy)tetrahydro-6-(hydroxymethyl)-2H-pyran-3,4,5-triol,Ⅴ]、2,5-二氢-3,5-二(4-羟基苯基)-2-呋喃甲醇[2,5-dihydro-3,5-bis(4-hydroxyphenyl)-2-furanmethanol,Ⅵ].结论 化合物I为新化合物,命名为池杉吡喃醇(aseendenpyranol),其他化合物均为首次从该植物中分离得到.     

刺五加的化学成分研究

目的研究五加科五加属植物刺五加Acanthopanax senticosus的化学成分。方法利用各种色谱技术进行分离,根据光谱数据鉴定结构。结果从刺五加中分离得到12个已知成分,分别鉴定为刺五加酮(1)、刺五加苷B1(2)、4-羟基-2-甲氧基苯基-1-O-β-D-葡萄糖苷(3)、alimoxide(4)、赤式-1-(4-羟基-3-甲氧基苯基)-2-{4-[(E)-3-羟基-1-丙烯基]-2-甲氧基苯氧基}-1,3-丙二醇(5)、erythro-1,2-bis(4-hydroxy-3-methoxyphenyl)-1,3-propanediol(6)、tortoside A(7)、表丁香脂素4′-O-β-D-葡萄糖苷(8)、(+)-lyoniresinol(9)、苯甲基-O-α-L-鼠李吡喃糖基(1→6)-β-D-葡萄吡喃糖苷(10)、2,6-二甲氧基-4-(3-羟基丙烯基)苯基-1-O-α-L-鼠李吡喃糖基-(1→6)-β-D-葡萄吡喃糖苷(11)、β-氨甲酰基吡啶(12)。结论化合物3～5、10～12为首次从该植物中分离得到。     

鲜半夏中抑制肿瘤坏死因子-α产生的活性成分

目的:研究半夏Pinellia ternata鲜块茎中的生物活性成分,为其质量评价提供科学依据.方法:采用多种柱色谱方法进行分离纯化,根据理化性质和谱学方法鉴定其结构.利用微孔板紫外吸收比色法,体外测定化合物对脂多糖(LPS)刺激的小鼠腹腔巨噬细胞产生肿瘤坏死因子TNF-α的抑制作用.结果:从半夏鲜块茎中分离得到9个化合物,分别鉴定为反式-对-香豆醇(1),3,4-二羟基桂皮醇(2),阿魏酸(3),落叶松脂醇(4),赤式-1-(4-羟基-3-甲氧基苯基)-2-{2,6-二甲氧基-4-[1-(E)-丙稀-3-醇]-苯氧基}-丙烷-1,3-二醇(5),去氢二松柏醇(6),异落叶松脂醇(7),4-羟苯丙烯基-O-β-D-吡喃葡糖苷(8)和松柏苷(9).化合物1,2,3,8和9在10-5 mol·L-1浓度对LPS刺激的小鼠腹腔巨噬细胞产生TNF-α的抑制作用分别为24.1%,57.6%,40.2%,82.7%和62.0%.结论:化合物1,2和4～8系首次从半夏属植物分离得到,化合物9系首次从半夏分离得到.化合物1,2,8和9为苯丙素类化合物,化合物4～7为木脂素类化合物.半夏的抗炎作用可能与化合物1,2,3,8和9有关.     

山鸡椒水溶性成分的研究

通过MCI树脂、Sephadex LH-20和反相HPLC等多种色谱分离方法相结合,从山鸡椒乙醇提取物中的水溶性部位中分离得到25个芳香苷和3个紫罗兰苷类成分,经MS和NMR等波谱技术分别鉴定为(7S,8R)-去氢二松柏醇-4,9'-二-O-β-D-吡喃葡萄糖苷(1),(7S,8R)-5-甲氧基二氢去氢二愈创木基醇-4-O-β-D-吡喃葡萄糖苷(2),(7S,8R)-urolignoside(3),(7R,8S)-二氢去氢二愈创木基醇-4'-O-β-D-吡喃葡萄糖苷(4),(7S,8R)-二氢去氢二愈创木基醇-9-O-β-D-吡喃葡萄糖基(1→2)-O-β-D-吡喃葡萄糖苷(saposide B)(5),lanicepside A(6),罗汉脂素-4-O-β-D-吡喃葡萄糖苷(7),4-O-甲基罗汉脂素-4'-O-β-D-吡喃葡萄糖苷(tyraxjaponoside B)(8),(+)-南烛木树脂酚-9'-O-β-D-吡喃葡萄糖苷(9),(-)-(2R)-1-O-β-D-吡喃葡萄糖基2-{2,6-二甲氧基-4-[1-(E)-丙烯3-醇]苯氧基}丙烷-3-醇(alaschanisoside A)(10),紫丁香苷(syringin)(11),psoralenoside(12),isopsoralenoside(13),东莨菪苷(scopolin)(14),2,6-二甲氧基-4-羟基苯酚-1-O-β-D-吡喃葡萄糖苷(15),3-羟基-4,5-二甲氧基苯酚-β-D-吡喃葡萄糖苷(16),2-(3,4-二羟基苯基)-乙基-β-D-吡喃葡萄糖苷(17),2-(4-羟基苯基)-乙基-β-D-吡喃葡萄糖苷(18),(+)-儿茶素-7-O-β-D-吡喃葡萄糖苷(19),3'-甲氧基表儿茶素-7-O-β-D-吡喃葡萄糖苷(20),山奈酚-3,7-α-L-二鼠李糖苷(kaempferitrin)(21),槲皮素-3-O-α-L-鼠李糖苷(22),山奈酚-3-O-β-D-吡喃葡萄糖苷(23),山奈酚-3-O-β-D-吡喃葡萄糖基(1→2)-β-D-吡喃半乳糖苷-7-O-α-L-鼠李糖苷(24),槲皮素-3-O-α-L-鼠李糖基(1→6)-O-β-D-吡喃葡萄糖基(1→3)-O-α-L-鼠李糖基(1→2)-O-β-D-吡喃葡萄糖苷(25),staphylionoside D(26),吐叶醇-9-O-β-D-吡喃葡萄糖苷(27),二氢吐叶醇-O-β-D-吡喃葡萄糖苷(28),其中化合物1~21,24~28均为首次从该属植物中发现。     

麻叶荨麻中抑制5α-还原酶活性木脂素研究

采用制备HPLC、NMR、HR-MS等方法分离、鉴定麻叶荨麻根中的木脂素成分,体外方法评价其抑制5α-还原酶作用。结果从麻叶荨麻中首次分离鉴定了10个木脂素:(2R,4S)-2,4-二(3-甲氧基-4-羟基苯基)-3-丁氧基丙醇(1)、3,4-反-3-羟甲基-4-[二(3,4-二甲氧基苯基)甲基]-丁内酯(2)、3,4-反-3-羟甲基-4-[(3-甲氧基-4-羟基苯基)(3,4-二甲氧基苯基)甲基]-丁内酯(3)、3,4-反-3-羟甲基-4-[二(3-甲氧基-4-羟基苯基)甲基]-丁内酯(反式荨麻醇,4)、3,4-反-3-羟甲基-4-[二(3,4二甲氧基苯基)甲基]-丁内酯-3-O-β-D-吡喃葡萄糖苷(5)、3,4-反-3-羟甲基-4-[(3-甲氧基-4-羟基苯基)(3,4-二甲氧基苯基)甲基]-丁内酯-3-O-β-D-吡喃葡萄糖苷(6)、3,4-反-3-羟甲基-4-[二(3-甲氧基-4-羟基苯基)甲基]-丁内酯-3-O-β-D-吡喃葡萄糖苷(反式荨麻醇-7-O-β-D-吡喃葡萄糖苷,7)、环橄榄脂素-4-O-β-D-吡喃葡萄糖苷(8)、异落叶松脂素-4′-O-β-D-吡喃葡萄糖苷(9)、橄榄脂素-4′-O-β-D-吡喃葡萄糖苷(10),以及1个多酚类成分α-viniferin(11)。其中,化合物1为新化合物,化合物7具有良好的抑制5α-还原酶活性。     

狭叶金粟兰地上部分化学成分研究

目的研究狭叶金粟兰Chloranthus angustifolius地上部分的化学成分。方法使用多种柱色谱技术进行分离纯化,根据理化性质和波谱数据鉴定化合物的结构。结果从狭叶金粟兰地上部分甲醇提取物的醋酸乙酯萃取部位分离得到8个化合物,分别鉴定为1-乙酰氧基2,3,4,5-四羟基-5-对甲氧基苯基戊烷(1)、(E)-5-(4-甲氧基苯基)-4-烯-1,2,3-三羟基戊醇(2)、异嗪皮啶(3)、(-)-二氢脱氢二松柏醇(4)、(±)-赤式-愈创木酚基甘油-4'-二氢松柏醇醚(5)、(-)-rosiridol(6)、(4S)-对薄荷烯4,7-二醇(7)、地芰普内酯(8)。结论化合物1和2为新化合物,分别命名为金粟兰戊醇和金粟兰烯醇,化合物3~8均为首次从该植物中分离得到。     

三白脂B:三白草中1个新的木脂素成分

目的研究三白草Saururus chinensis全草的化学成分。方法采用多种柱色谱法分离,通过理化鉴别及波谱分析技术鉴定化合物的结构。结果从三白草全草95%乙醇提取物中分离得到了7个化合物,分别鉴定为反式-7,8-二氢-7-(3,4-亚甲二氧基)苯基-1′-(2-氧丙基)-3′-甲氧基-8-甲基苯并呋喃(1)、4-(3-甲氧基-4-羟基)苯基-3-甲基-3-丁烯-2-酮(2)、(+)-愈创木素(3)、(+)-反式-1,2-二氢脱氢愈创木脂酸(4)、异落叶松脂素-4-O-β-D-葡萄糖苷(5)、异甘密树脂B(6)和perseal F(7)。结论化合物1为新化合物,命名为三白脂B,化合物2~7均为首次从该植物中分离得到。     

鲜半夏中抑制肿瘤坏死因子-α产生的活性成分

目的：研究半夏Pinellia ternata鲜块茎中的生物活性成分,为其质量评价提供科学依据。方法：采用多种柱色谱方法进行分离纯化,根据理化性质和谱学方法鉴定其结构。利用微孔板紫外吸收比色法,体外测定化合物对脂多糖(LPS)刺激的小鼠腹腔巨噬细胞产生肿瘤坏死因子TNF-α的抑制作用。结果：从半夏鲜块茎中分离得到9个化合物,分别鉴定为反式-对-香豆醇(1),3,4-二羟基桂皮醇(2),阿魏酸(3),落叶松脂醇(4),赤式-1-(4-羟基-3-甲氧基苯基)-2-{2,6-二甲氧基-4-［1-(E)-丙稀-3-醇］-苯氧基}-丙烷-1,3-二醇(5),去氢二松柏醇(6),异落叶松脂醇(7),4-羟苯丙烯基-O-β-D-吡喃葡糖苷(8)和松柏苷(9)。化合物1,2,3,8和9在10-5 mol·L-1浓度对LPS刺激的小鼠腹腔巨噬细胞产生TNF-α的抑制作用分别为24.1%,57.6%,40.2%,82.7%和62.0%。结论：化合物1,2和4～8系首次从半夏属植物分离得到,化合物9系首次从半夏分离得到。化合物1,2,8和9为苯丙素类化合物,化合物4～7为木脂素类化合物。半夏的抗炎作用可能与化合物1,2,3,8和9有关。     

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??OBJECTIVE To study the chemical constituents from the rhizome of Saururus chinensis. METHODS The chemical constituents from the rhizome of Saururus chinensis were extracted by supercritical CO₂ extraction and isolated by various chromatographic methods, such as silica gel, MCI and pre-HPLC. Their structures were elucidated by physico-chemical constants and spectroscopic methods. RESULTS Seventeen compounds were isolated and identified as aurantiamide acetate (1), echinuline (2), (-)-(7R,8R)-7-O-acetylpolysphorin (3), elemicin (4), isoelemicin (5), 1,4-bis(3,4-dimethyoxyphenyl)-2,3-dimethyl-1,4-butanedione (6), saucerneol D (7), (2R)-3-(3??,4??,5??-trimethoxyphenyl)-1,2-propanediol (8), grandisin (9), rel-(7R,8R,7??R,8??R)-3??,4??-methylenedioxy-3,4,5,5??-tetramethoxy-7,7-epoxylignan(10), zanthopyranone (11), (??)-eritro-1-(3,4,5-trimethoxy)-1,2-propanodiol (12), threo-3,4,5-trimethoxy-7-hydroxy-1??-allyl-3??,5??-dimethoxy-8.O.4??-neolignan (13), (+)-(8R)-(2,6-dimethoxy-4-propenylphenoxy)-1-(3,4,5-trimethoxyphenyl)propan-1-one (14), meso-dihydroguaiaretic acid(15), (-)-galbacin (16), and (-)-(7R,8R)-7-O-acetylraphidecursinol B (17). CONCLUSION Compound 6 is a new natural compound. Compounds 1-2, 4-6, 8-9 and 11-13 are isolated from this plant for the first time.     

Bioactive compounds from Peperomia pellucida

Five new compounds (1-5), including two secolignans, two tetrahydrofuran lignans, and one highly methoxylated dihydronaphthalenone, were isolated from the whole plant of Peperomia pellucida. These compounds were accompanied by the known peperomins A, B, C, and E, 7,8-trans-8,8'-trans-7',8'-cis-7,7'-bis(5-methoxy-3,4-methylenedioxyphenyl)-8-acetoxymethyl-8'-hydroxymethyltetrahydrofuran, 7,8-trans-8,8'-trans-7',8'-cis-7-(5-methoxy-3,4-methylenedioxyphenyl)-7'-(4-hydroxy-3,5-dimethoxyphenyl)-8,8'-diacetoxymethyltetrahydrofuran, sesamin, and isoswertisin. New structures were elucidated mainly by NMR and MS techniques, and anticancer activities evaluated in HL-60, MCF-7, and HeLa cell lines. Compound 1 and peperomin E show growth inhibitory effects on the three cancer cell lines with IC(50) values ranging between 1.4 and 9.1 and between 1.8 and 11.1 microM, respectively. Compound 2 has a weak suppressive activity on HL-60 cells (IC(50) = 10.8 microM), while 7,8-trans-8,8'-trans-7',8'-cis-7,7'-bis(5-methoxy-3,4-methylenedioxyphenyl)-8-acetoxymethyl-8'-hydroxymethyltetrahydrofuran exhibits estrogen-like properties (EC(50) = 3.1 microM) in CV-1 cells transfected with human estrogen receptor (ERalpha).     

Five new phenolics from the roots of Ficus beecheyana

From the ethanolic extract of the roots of Ficus beecheyana, threo-2,3-bis(4-hydroxy-3-methoxyphenyl)-3-ethoxypropan-1-ol (1), erythro-2,3-bis(4-hydroxy-3-methoxyphenyl)-3-ethoxypropan-1-ol (2), trans-4,5-bis(4-hydroxy-3-methoxyphenyl)-1,3-dioxacyclohexane (3), threo-3-(4-hydroxy-3,5-dimethoxyphenyl)-3-ethoxypropane-1,2-diol (4), 2,3-dihydroxy-1-(4-hydroxy-3,5-dimethoxyphenyl)-1-propanone (5), and 3-hydroxy-1-(4-hydroxy-3,5-dimethoxyphenyl)-1-propanone (6) were isolated. The structures of the new compounds 1-5 were elucidated by the analysis of their spectroscopic data.     

Bromophenols coupled with nucleoside bases and brominated tetrahydroisoquinolines from the red alga Rhodomela confervoides

Three new bromophenols C-N coupled with nucleoside base derivatives (1-3) and three new brominated 1,2,3,4-tetrahydroisoquinolines (5-7), together with a new brominated tyrosine derivative (4), have been isolated from polar fractions of an ethanolic extract of the red alga Rhodomela confervoides. By spectroscopic and chemical methods including HRMS and 2D NMR data, their structures were determined as 7-[3-bromo-2-(2,3-dibromo-4,5-dihydroxybenzyl)-4,5-dihydroxybenzyl]-3,7-dihydro-1H-purine-2,6-dione (1), 7-(2,3-dibromo-4,5-dihydroxybenzyl)-3,7-dihydro-1H-purine-2,6-dione (2), 9-[3-bromo-2-(2,3-dibromo-4,5-dihydroxybenzyl)-4,5-dihydroxybenzyl]adenine (3), (-)-8S-(3-bromo-5-hydroxy-4-methoxy)phenylalanine (4), (-)-3S-8-bromo-6-hydroxy-7-methoxy-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid (5), methyl (-)-3S-8-bromo-6-hydroxy-7-methoxy-1,2,3,4-tetrahydroisoquinoline-3-carboxylate (6), and methyl (-)-3S-6-bromo-8-hydroxy-7-methoxy-1,2,3,4-tetrahydroisoquinoline-3-carboxylate (7). Compounds 5-7 were semisynthesized by using 4 as the starting material.     

New naphthopyranone glycosides from Paepalanthus vellozioides and Paepalanthus latipes.

Three new compounds-3, 4-dihydro-10-hydroxy-7-methoxy-3-(R)-methyl-1H-3,4-dihydronaphtho- ]2, 3c]-pyran-1-one-9-O-beta-D-glucopyranoside (1), 3, 4-dihydro-10-hydroxy-7-methoxy-3-(R)-methyl-1H-3,4-dihydronaphtho- [2, 3c]-pyran-1-one-9-O-beta-D-glucopyranosyl-(1-->6)-glucopyranoside (2), and 3,4-dihydro-10-dihydroxy-7-methoxy-3-(R)-methyl-1H-3, 4-dihydronaphtho-[2,3c]-pyran-1-one-9-O-beta-D-allopyranosyl (1-->6)glucopyranoside (3)-were isolated from the leaves of Paepalanthus vellozioides and Paepalanthus latipes and characterized by spectrometric methods, mainly electrospray mass spectrometry and 1D and 2D NMR experiments. These unusual glycosylated dihydronaphthopyranones may serve as taxonomic markers of the genus Paepalanthus, since these compounds were not detected in other genera belonging to the Eriocaulaceae family.     

New neolignans that inhibit DNA polymerase beta lyase

Bioassay-directed fractionation of a methyl ethyl ketone extract of the roots of Endlicheria aff. resulted in the isolation of four new neolignans (1-4) and eight known compounds, namely, canellin A (5), canellin C (6), 3'-methoxyguianin (7), (7S,8R,1'S,5'S,6'R)-Delta(2',8')-3',6'-dihydroxy-5'-methoxy-3,4-methylenedioxy-4'-oxo-8.1',7.5'-neolignan (8), armenin-B (9), dillapiole (10), 1-allyl-2,6-dimethoxy-3,4-methylenedioxybenzene (11), and omega-hydroxyisodillapiole (12). The structures of the new compounds (1-4) were established as (7S,8R,1'S,5'S,6'R)-Delta(2',8')-5',6'-dihydroxy-3'-methoxy-3,4-methylenedioxy-4'-oxo-8.1',7.5'-neolignan, (7S,8R,1'S,5'S,6'R)-Delta(2',8')-3',5',6'-trihydroxy-3,4-methylenedioxy-4'-oxo-8.1',7.5'-neolignan, 2,4-dimethoxy-5,6-methylenedioxy-1-(2-propenyl)benzene, and 2,6-dimethoxy-3,4-methylenedioxycinnamyl alcohol, respectively, on the basis of spectroscopic interpretation.     

乌桕叶化学成分研究

通过利用正相硅胶色谱、大孔吸附树脂柱色谱、葡聚糖凝胶LH-20色谱、制备薄层色谱和半制备HPLC等多种分离方法,运用现代波谱技术对所分离的化合物进行结构鉴定,从乌桕Sapium sebiferum叶中分离得到15个化合物,分别鉴定为(+)-(7R,7′R,7"S,7(')S,8S,8′S,8"S,8(')S)-4",4(')-dihydroxy-3,3′,3",3('),5,5′-hexamethoxy-7,9';7',9-diepoxy-4,8";4′,8(')-bisoxy-8,8′-dineo-lignan-7",7('),9",9(')-tetraol(1),1-(4′-hydroxy-3'-methoxyphenyl)-2-[4"-(3-hydroxy propyl)-2",6"-dimethoxyphenoxy]propane-1,3-dio1(2),苏式-2,3-二-(4-羟基-3-甲氧基苯)-3-甲氧基丙醇(3),threo-5-hydroxy-3,7-dimethoxyphenylpropane-8,9-diol(4),boropinol B(5),threo-8S-7-methoxysyringylglycerol(6),5-羟甲基糠醛(7),5-甲氧甲基-1H-吡咯-2-甲醛(8),槲皮素(9),山柰酚(10),没食子酸乙酯(11),松柏醛(12),香草醛(13),7-羟基-6-甲氧基香豆素(14),正二十七烷醇(15),除化合物9～ 11,14外,以上化合物均为首次从乌桕中分离得到.     

白茅根的化学成分研究

应用色谱法对白茅根的化学成分进行研究,应用波谱法结合文献报道的波谱数据鉴定化合物结构.结果分离鉴定了13个化合物,其中3个苯丙素类成分,1-(3,4,5-三甲氧基苯基)-1,2,3-丙三醇(1),1-O-对香豆酰基甘油酯(2),4-甲氧基-5-甲基香豆素-7-O-β-D-吡喃葡萄糖苷(3);4个有机酸类成分,对羟基苯甲酸(4),3,4-二羟基苯甲酸(5),香草酸(6),3,4-二羟基丁酸(7);1个酚类成分,水杨苷(8);以及5个三萜类成分,芦竹素(9),白茅素(10),羊齿烯醇(11),西米杜鹃醇(12),粘霉酮(13).其中1～8为首次从白茅属植物中分离得到.     

红毛丹果壳的化学成分研究

目的 研究红毛丹Nephelium lappaceum果壳的化学成分.方法 采用硅胶柱色谱与Sephadex LH-20凝胶柱色谱进行分离纯化,并运用波谱方法对分离的化合物进行结构鉴定.结果 从红毛丹果壳醋酸乙酯提取物中分离鉴定了14个化合物,经波谱解析鉴定为邻苯二酚(1)、4-甲氧基甲苯(2)、没食子酸乙酯(3)、3-(3,4-二甲氧基苯基)-2-丙烯醛(4)、异莨菪亭(5)、麦角甾醇(6)、滨藜叶分药花苷(7)、常春藤皂苷元(8)、二氢山柰酚(9)、山柰酚(10)、kaempferol-3-β-D-(6-O-trans-p-coumaroyl)-glucopyranoside(11)、山柰酚-3-α-L-吡喃鼠李糖苷(12)、山柰酚-3-O-(6-O-咖啡酰基)-β-D-吡喃葡萄糖苷(13)、β-谷甾醇(14).结论 所有化合物均为首次从红毛丹果壳中分离得到.     

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??OBJECTIVE To study the chemical constituents of Yao medicine, Zhongliuteng, the stems of Pileostegia tomentella. METHODS The chemical constituents were isolated and purified by silica gel chromatography repeatedly, and their structures were identified by spectral analysis and chemical METHODS. RESULTS Thirteen compounds were isolated from the stems of P. tomentella and the structures were identified as 1-O-(??-D-glucosyl)-2-[2-methoxy-4-(??-hydroxypropyl) phenoxy]propan-3-ol(1),(+)-lyoniresinol-3a-O-??-D-glucopyranoside (2),syringin (3),coniferin (4),dihydroconiferin (5),but-3-enyl-??-D-glucoside (6),4-(2,3-dihydroxypropyl)-2,6-dimethoxy phenyl ??-D-glucopyranoside (7),nikoenoside (8),protocatechuic acid ethyl ester (9),8-methoxy coumarin-7-O-??-D-glucopyranoside (10),6-O-R-L-rhamnopyranosyl-??-D-glucopyranoside methyl salicylate (11), nicotinamide (12), and 3,5-di-O-caffeoyl quinicacid methyl ester (13). CONCLUSION All compounds were obtained from the genus for the first time.