Two new acetylenic compounds from Asparagus officinalis

Two new acetylenic compounds, asparoffins A (1) and B (2), together with two known compounds, nyasol (3) and 3″-methoxynyasol (4), were isolated from stems of Asparagus officinalis. The structures of two new compounds were elucidated on the basis of detailed spectroscopic analyses (UV, IR, MS, 1D, and 2D NMR). All compounds were evaluated for their cytotoxicities against three human cancer cell lines.     

Two new neuroprotective phenolic compounds from Gastrodia elata

Two new phenolic compounds 4-(4′-hydroxybenzyl) phenyl glucoside (gastrodin B, 1) and 1′-hydroxymethyl-phenyl 4-hydroxy-3-(4″-hydroxybenzyl) benzyl ether (gastrol B, 2) were isolated from the rhizomes of Gastrodia elata. Their structures were elucidated on the basis of spectroscopic data and chemical reaction. All compounds exhibited potent neuroprotective activity against H₂O₂-induced PC12 cell damage.     

Two new phenolic compounds from the seeds of Machilus yunnanensis

Chemical constituents investigation on the seeds of Machilus yunnanensis led to two new phenolic compounds 8-O-acetyl-phenylethanoid-4-O-β-D-glucopyranoside (1) and (E)-2,3-bis(4-hydroxyphenyl)acrylaldehyde (2), together with 16 known compounds. Their structures were elucidated on the basis of spectroscopic data analysis (IR, MS, 1D, and 2D NMR). Meanwhile, compounds 1–3, 6–13, 17, and 18 were evaluated for vasorelaxant effects on the rat endothelium-intact thoracic aorta rings precontracted with phenylephrine (PE) or KCl. The bioassay results showed that compound 17 had significant vasorelaxant effect on the endothelium-intact thoracic aorta rings precontracted with KCl.     

Three new phenolic compounds from Dalbergia odorifera

Three new phenolic compounds (1–3) were isolated from the heartwood of Dalbergia odorifera T. Chen. (Leguminosae). Their structures were established based on spectroscopic methods including 1D and 2D NMR (HSQC, COSY, HMBC and ROESY). Compound 2 exhibited cytotoxicity against BEL-7402 tumor cell lines.     

Two new secoiridoid glycosides from Verbena officinalis

Two new secoiridoid glycosides, verbenoside A (1) and verbenoside B (2), have been isolated from the ethanol extract of the aerial parts of Verbena officinalis L. Their structures were elucidated on the basis of spectroscopic evidences, especially 1D, 2D NMR, and MS experiments.     

Two new indole alkaloids from Nauclea officinalis

Two new indole alkaloids, naucleactonin A and B, along with two known compounds, naucleficine and nauclefidine, were isolated from the bark and wood of Nauclea officinalis, which has been used as an anti-inflammatory and anti-bacterial agent in folk medicine. Their chemical structures were elucidated by the spectral data, especially 1D and 2D NMR experiments.     

石刁柏药材的质量标准研究

目的:建立石刁柏药材的质量标准。方法:按2010年版《中国药典》(一部)规定对石刁柏药材进行显微和薄层色谱(TLC)鉴别,并对10批石刁柏药材的水分、灰分、酸不溶性灰分进行检查;在570 nm波长处采用紫外-可见分光光度法对石刁柏药材中的菝葜皂苷元进行含量测定。结果:确定了石刁柏药材的显微特征,建立了其TLC鉴别方法,拟定了其水分、灰分、酸不溶性灰分限量。菝葜皂苷元的进样量在0.037 3⁰.111 8 mg范围内与吸光度呈良好的线性关系(r=0.999 6);精密度、稳定性、重复性试验的RSD<2%;平均加样回收率为99.58%,RSD=1.81%(n=9)。结论:所建标准可用于石刁柏药材的质量评价。     

Asparosides A and B,two new steroidal saponins from Asparagus meioclados

Asparosides A ( 1 ) and B ( 2 ), two new saponins, were isolated from the roots of Asparagus meioclados . On the basis of chemical and spectroscopic evidence, their structures were elucidated as 23- O - f -arabinopyranosyl-(5 g ,25s)-spirostan-3 g ,23 f -diol-3- O -[ g - d -xylopyranosyl(1 M 4)]- g - d -glucopyranoside and 26- O - g -glucopyranosyl-5 g -furost-20(22)-ene-3 g ,26-diol-3- O -[ g - d -xylopyranosyl(1 M 4)]- g - d -glucopyranoside, respectively.     

The effect of Asparagus officinalis polysaccharide on erythrocyte of S180 mice played in immunological reaction of lymphocytes

Objective To contrast the roles of Asparagus officinalis polysaccharide on erythrocyte of S180 mice played in immunological reaction of lymphocytes.To study the effect of Asparagus officinalis polysaccharide on the erythrocyte function of S180 mice.Methods Suspensions of lymphocytes(1×106/mL)and autologous plasma were respectively separated from anticoaguted whole blood of healthy mice with the lymphocyte separation medium.The erythrocytes(1×108/mL)were separated from whole blood of Asparagus officinalis polysaccharide mice.Using the autologous plasm as reactive medium,the role of erythrocytes in regulating the immunological reaction of lymphocytes was appraised.The expression of CD25 on lymphocytes was detected using flow cytometry.Results The immunogical regulating ability of erythrocyte in mice with control groups is much lower than that of normal groups,and the immunogical regulating ability of erythrocyte in mice with Asparagus officinalis polysaccharide groups is much higher than that of control groups.Conclusions According to the effects of erythrocyte CD35 on the immuno-response of lymphocyte and the different of the expression of CD25 on lymphocytes,we prove that Asparagus officinalis polysaccharide can improve the erythrocyte function of S180 mice.     

芦笋抗肿瘤作用研究进展

目的：芦笋是天门冬科天门冬属多年生草本植物,具有极高的营养价值,含有大量的营养物质和活性成分,同时具有多种生理活性,该文综述了芦笋抗肿瘤作用的研究进展。     

Phenolic compounds from Nicotiana tabacum and their biological activities

Three new phenolic compounds, nicotphenols A–C (1–3), together with 14 known phenols (4–17), were isolated from the leaves of Nicotiana tabacum. Their structures were established by means of spectroscopic methods, including extensive 1D and 2D NMR techniques. Compounds 1–3 were tested for their anti-HIV-1 activities and cytotoxicities. They all showed significant cytotoxic abilities and modest anti-HIV-1 activities, respectively.     

HPLC法同时测定芦笋黄酮中5个黄酮苷的含量

目的:建立反相高效液相色谱法同时测定芦笋黄酮中槲皮素-3-O-葡萄糖-芸香糖苷、芦丁、异鼠李素-3-O-葡萄糖-芸香糖苷、烟花苷和水仙苷的含量。方法:采用Diamonsil(钻石)C18柱(200 mm×4.6 mm,5μm),流动相为乙腈-甲醇-0.1%醋酸水(8∶16∶76),流速1.0 mL.min-1,柱温30℃,检测波长260 nm。结果:芦笋黄酮中槲皮素-3-O-葡萄糖-芸香糖苷、芦丁、异鼠李素-3-O-葡萄糖-芸香糖苷、烟花苷和水仙苷浓度分别在30.38～70.88μg.mL-1(r=0.9996)、60.75～141.75μg.mL-1(r=0.9995)、29.40～68.60μg.mL-1(r=0.9997)、29.63～69.13μg.mL-1(r=0.9996)、18.00～42.00μg.mL-1(r=0.9998)范围内与峰面积呈良好的线性关系。方法的加样回收率(n=6)分别为99.4%,99.2%,99.2%,102.6%,101.4%;RSD分别为2.0%,1.6%,1.8%,1.3%,2.2%。结论:本法快速、简便、准确,重复性好,适用于芦笋黄酮的质量控制。     

天门冬中的两个新呋甾皂苷aspacochinoside L和aspacochinoside M(英文)

从天门冬的根中分离得到两个新呋甾烷型皂苷aspacochinoside L(1)和aspacochinoside M(2),通过化学和波谱学方法确定了化合物1和2的结构。利用脂多糖(LPS)诱导的小胶质细胞(BV-2)炎症模型,测试了化合物的抗炎活性,其中aspacochinoside M的IC50值为32.26μM。     

中药大血藤中酚类化学成分及其抗肿瘤活性

目的阐明中药大血藤中抗癌活性成分.方法以细胞周期抑制、坏死性细胞毒活性为抗癌指标,采用硅胶、Sephadex LH-20、大孔树脂HP-20等色谱方法,跟踪分离活性成分,利用理化性质及波谱方法鉴定了化学结构,用SRB法及流式细胞术评价其抗癌活性.结果与结论从大血藤茎中分离得到7个酚酸类化合物:3,5-O-二甲基-没食子酸(1)、原儿茶酸(2)、绿原酸(3)、N-(对-羟基苯乙基)阿魏酸酰胺(4)、对-羟基苯乙醇(5)、(-)-表儿茶素(6)、缩合鞣质B2(7).化合物3对人慢性髓性白血病K562细胞的半数抑制浓度(IC50)为97.2 μg/mL,化合物4在100 μg/mL浓度下对K562细胞的增殖抑制率为46.6%.流式细胞术检测表明,化合物7对小鼠乳腺癌tsFT210细胞和K562细胞均显示G2/M期抑制作用,为一新的细胞周期抑制剂.除化合物2外,其余6个化合物均为首次从该属植物中分离得到.     

Two new terpenoid benzoates with antitumor activity from the roots of Ferula dissecta

Two new sesquiterpene benzoates, syreiteate A (1) and syreiteate B (2), were isolated from the roots of Ferula dissecta (Ledeb.) Ledeb. Their structures were elucidated by extensive spectroscopic methods including 1D (¹H and ¹³C) NMR, 2D (HSQC, HMBC, DQF-COSY, and NOESY) NMR, and ESI-TOF-MS. Their configurations were determined on the basis of the analysis of the coupling constants, NOESY correlations, and circular dichroism spectrum. Compounds 1 and 2 showed potent growth inhibitory activity against cervical cancer HeLa cell line with the IC₅₀ values of 13.2 and 19.3 μM, respectively.     

Three new iridoids from leaves of Cornus officinalis

Three new iridoids, cornifins A–C (1–3), together with a known iridoid, were obtained from EtOAc layer of leaves of Cornus officinalis. The structures of new compounds were elucidated on the basis of extensive spectroscopic analyses. Compound 2 showed weak inhibitory activity against lung cancer cell line A-549 with IC₅₀ value of 29.1 μM.     

Isoprenylated phenolic compounds with tyrosinase inhibition from Morus nigra

A new isoprenylated sanggenon-type flavanone, nigrasin K (1), together with three known analogs (2–4) and five known Diels–Alder adducts (5–9), were isolated from the twigs of Morus nigra. Their structures were elucidated by spectroscopic methods. Sanggenon M (2), chalcomoracin (5), sorocein H (6), kuwanon J (7), sanggenon C (8), and sanggenon O (9) showed significant inhibitory effects on mushroom tyrosinase.     

Effects of blending wheatgrass juice on enhancing phenolic compounds and antioxidant activities of traditional kombucha beverage

Traditional kombucha is a fermented black tea extract and sugar. Sweetened black tea (10% w/v) and wheatgrass juice (WGJ) were mixed in various ratios and used as fermentation substrate for enhancing phenolic compounds and antioxidant activity. Starter, comprising of yeast (Dekkera bruxellensis) and acetic acid bacteria (Gluconacetobacter rhaeticus and Gluconobacter roseus), was inoculated at 20% (v/v), and fermented statically at 29 ± 1°C for 12 days. The results showed that the total phenolic and flavonoid contents and antioxidant activity of the modified kombucha were higher than those of traditional preparations. All WGJ-blended kombucha preparations were characterized as having higher concentrations of various phenolic compounds such as gallic acid, catechin, caffeic acid, ferulic acid, rutin, and chlorogenic acid as compared to traditional ones. Addition of WGJ resulted in the 1,1-diphenyl-2-picrylhydrazyl (DPPH) scavenging ability of kombucha being > 90%, while the oxygen radical absorbance capacity increased from 5.0 μmol trolox equivalents/mL to 12.8 μmol trolox equivalents/mL as the ratio of WGJ increased from 0% to 67% (v/v). The highest antioxidant activity was obtained using a 1:1 (v/v) black tea decoction to WGJ ratio and 3 days of fermentation, producing various types of phenolic acids. These results suggest that intake of fermented black tea enhanced with wheatgrass juice is advantageous over traditional kombucha formulas in terms of providing various complementary phenolics and might have more potential to reduce oxidative stress.     

HPLC-MS法测定首乌丸中五种蒽醌类成分的含量

目的建立首乌丸中芦荟大黄素、大黄酸、大黄素、大黄酚以及大黄素甲醚等五种蒽醌类成分的含量测定方法。方法 HPLC-MS联用法对首乌丸中五种蒽醌类物质的含量同时测定。色谱条件为:Phenomenex Luna C18(3μm,150 mm×2 mm)柱,流动相:甲醇-5 mmol/L醋酸铵溶液(90∶10),流速:0.2 mL/min,电喷雾型质谱检测器。结果大黄酸、芦荟大黄素、大黄素、大黄酚、大黄素甲醚分别在0.18～56.6,0.016～10.03,0.024～14.94,0.18～11.33,0.011～6.85 ng范围内线性良好;r分别为0.999 8,0.999 9,0.998 8,0.999 9,0.999 9;水解前平均回收率分别为108.5%(RSD=0.93%),98.67%(RSD=1.57%),100.2%(RSD=0.69%),99.73%(RSD=1.27%),105.4%(RSD=1.54%);水解后平均回收率分别为99.67%(RSD=1.12%),99.21%(RSD=1.78%),98.94%(RSD=1.23%),98.32%(RSD=2.08%),96.10%(RSD=2.67%)。结论此法简便、准确、快捷,可用于首乌丸的质量控制。     

A new drimane sesquiterpenoid and a new triterpene lactone from fungus of Fomes officinalis

A new sesquiterpenoid fomeffic acid (1) and a new triterpene lactone fomefficinin (2) were isolated from the fungus Fomes officinalis, together with another six known compounds fomitopsin C (3), dehydrosulfurenic acid (4), dehydroeburiconic acid (5), dehydroeburicoic acid (6), 3-keto-dehydrosulfurenic acid (7), and laricinolic acid (8). The structures and stereochemistry of 1 and 2 were determined by NMR and X-ray diffraction analyses. The sesquiterpenoid and five triterpenes were tested for cytotoxicity against HL-60, Bel-7402, and KB cancer lines in vitro, and they appeared to be modestly active.