十三种洋地黄属强心甙成分的反相高效液相分离

洋地黄属强心甙系由玄参科洋地黄属植物中提取出的混合物,是重要的治疗心脏病药物。由于其成分复杂,分离其所含的各强心甙成分十分困难。本文采用反相高效液相色谱法,在传统用于分离洋地黄强心甙成分的乙腈—水流动相系统中加入一定量甲醇作改进剂,并进行凹形梯度洗脱,大大改进了结构极为近似的强心甙的分离,13种洋地黄属强心甙化合物得到了满意的分离。     

桂竹糖芥中糖芥毒甙的研究

通过对桂竹糖芥种子中的强心甙成分的提取，分离，得到五种单体ｂ，ｃ，ｄ，ｅ，ｇ其中对成分ｇ进行鉴定，初步确定了该成分为糖芥毒甙。     

从亚高山洋地黄中分得—新的欧夹竹桃糖甙

对植物化学上已深入研究的玄参科洋地黄属的植物分类至今尚有分歧,较多人是按Werner的分类,即考虑个别的种变异较大,所以把该属分为19个洋地黄种,划出三个种作为另外的属(Isoplexis)。由于从洋地黄属植物中发现了强心甙,有些品种已作详细研究。1935年就已知洋地黄Digitalis pur-purea L.和毛花洋地黄Digitalis lanata Ehrh含有强心甙成分,1956至1970年间对许多其它的种进行了研究,但对亚高山洋地黄Digitalis subalpina Br.-B1.和阿特拉斯洋地黄Digitalis atlantica Pomel在化学上至今尚未     

天然药物

130.毛花洋地黄叶在第一营养期中强心甙成分组成的变化本文研究了毛花洋地黄的主要强心甙成分在第一营养期的过程中,各组分含量的变化。所测定的成分为毛花洋地黄甙A,B和C(简称A,B和     

HPLC-MS/MS测定地高辛片中羟基洋地黄毒苷和洋地黄毒苷的含量

目的 采用HPLC-MS/MS建立同时测定地高辛片中羟基洋地黄毒苷和洋地黄毒苷的方法。方法 色谱柱Agilent C18（150 mm×4.6 mm,5 μm）,流动相为乙腈-水（40∶60）,三重四极杆串联质谱检测,电喷雾离子化源（ESI）,在负离子条件下以多反应监测（MRM）方式进行扫描定量。结果 羟基洋地黄毒苷浓度在0.025 65-2.565 μg·mL^-1内与峰面积呈良好的线性关系,r为0.999 3; 洋地黄毒苷浓度在0.025 95-2.596 μg·mL^-1内与峰面积呈良好的线性关系,r为0.999 8;羟基洋地黄毒苷平均加样回收率为99.7%,RSD=2.2%;洋地黄毒苷平均加样回收率为100.9%,RSD=2.3%。结论 本方法简便、准确可靠,适用于地高辛片中羟基洋地黄毒苷和洋地黄毒苷两个主要有关物质的控制。     

六种甘草属植物根中黄酮类成分的高效液相色谱分析

应用反相高效液相色谱技术,对从甘草中提取的10个黄酮类化合物进行了分离,并且分析了6种甘草属植物根的9个样品的黄酮类化合物的组成,结果表明,不同种的甘草中所含黄酮类化合物的成分、含量均不同。     

年龄和体重对糖甙药物治疗的影响

一、前言众所周知,青年患者能够耐受良好的洋地黄投予量,对于老年患者则可发生洋地黄毒性反应。究其原因,老化心肌对正常洋地黄血药浓度敏感性增加;老年的糖甙类动力学的转变可导致较高的洋地黄心肌浓度;或者由于患者体重的不同,使用药剂量估计错误。二、老化与洋地黄敏感性人类老化进程中甲状腺功能、肾脏排泄     

黄夹甙及次甙成分的药理研究和临床应用

强心甙是治疗心力衰竭的重要药物,药理和临床研究表明黄夹甙类强心甙是有高效、低毒、药代学特征较好的优点,特别宜于心衰伴肾功能不良与心律失常者。该类制剂在我国的资源丰富,可补充现在应用的洋地黄制剂。本文综述了国内外对其进行的药理研究和临床应用,提示了对其广泛认识和深入研究的必要。     

洋地黄

又名 Dead Man’s Bells,Fairy Cap,Fairy Finger,Foxglove,Lady’SThimble,Lion’sMouth,Purple Foxglove,Scotch Mercury,Throatwort,Witch’s Bells,Wolly Foxglove。 植物名 Digitalis purpurea;D．lanata。 活性成分与药理作用 洋地黄含多种糖苷,主要是洋地黄毒苷（digitoxin）和芰皂素（gitoxin）的前体糖苷A和B。     

苦瓜子有效成分研究

从苦瓜(Momordica charantia L.)的种子中,分离出五种成分,经光谱和化学方法确定其结构为:蚕豆甙,海藻糖,24β-乙基-5α-胆甾-7,反式-22E,25(27)-三烯,-3β-羟、基-3-O-β-D-吡喃葡萄糖甙,苦瓜子甙A,苦瓜子甙B。海藻糖系首次从该植物中分出,甾醇甙系首次从苦瓜属植物中分出,两个苦瓜子甙系新化合物。苦瓜子甙A对S180动物瘤组织DNA和RNA蛋白质合成有显著抑制作用。     

Three new C21-steroidal glycosides from the roots of Cynanchum inamoenum

Three new C₂₁-steroidal glycosides presenting an unusual 13,14:14,15-disecopregnane-type skeleton, named inamosides A–C (1–3), together with two known C₂₁-steroidal glycosides, were isolated from the MeOH extract of the roots of Cynanchum inamoeum (Maxim.) Loes (Asclepiadaceae). The aglycone of compounds 1, 2, and 3 has a 2β-hydroxyl, which has not yet been reported in the literature. The structure and relative configuration of the aglycone of compounds 1, 2, and 3 were established by X-ray crystallographic analysis.     

Pregnane glycosides from the stems of Marsdenia tenacissima

Four new pregnane glycosides, named marstenacissides A (1), B (2), C (3), and D (4), have been isolated from the stems of Marsdenia tenacissima. Their structures were established on the basis of chemical and spectral methods.     

白首乌体外抑制肿瘤细胞的成分研究

目的　从萝科鹅绒藤属植物耳叶牛皮消（Cynanchum auriculatum Royle ex Wight）块根中分离出有细胞毒活性的2种C₂₁甾体苷。方法　用柱色谱和HPLC法分离纯化,通过化学降解及光谱分析（UV,IR,¹HNMR,¹³CNMR,DEPT,HR-FAB-MS,FAB-MS,HMQC和HMBC）鉴定其化学结构。结果　从白首乌中分离得到白首乌新苷A(I)与B(II),其化学结构分别为：告达庭-3-O-β-D-葡吡喃糖基-(1→4)-β-D-磁麻吡喃糖基-（1→4）-β-D-夹竹桃吡喃糖基-（1→4）-β-D-磁麻吡喃糖苷;告达庭-3-O-β-D-葡吡喃糖基-（1→4）-β-D-夹竹桃吡喃糖基-（1→4）-β-D-洋地黄毒吡喃糖基-（1→4）-β-D-磁麻吡喃糖苷。结论　白首乌新苷A和B均为新C₂₁甾体苷。     

Irisdichotins A–C,three new flavonoid glycosides from the rhizomes of Iris dichotoma Pall.

Three new compounds including one flavonol glycoside, irisdichotin A (1), and two flavanonol glycosides, irisdichotins B (2) and C (3), were isolated from the rhizomes of Iris dichotoma Pall. Their structures were elucidated on the basis of spectroscopic methods.     

Lecanorosides A and B,two new triterpene glycosides from the sea cucumber Actinopyga lecanora

Two new sulphated triterpene glycosides, lecanorosides A (1) and B (2), along with the known compounds holothurins A (3), A₁ (4), and B (5), were isolated from the sea cucumber Actinopyga lecanora. Their structures were deduced from extensive spectral analysis (NMR and MS) and chemical evidence. Glycosides 1 and 4 showed marginal in vitro cytotoxicity against two human tumour cell lines.     

黄花夹竹桃中强心甙测定方法的研究

从黄花夹竹桃果仁中提出的黄夹甙为一混合强心甙,主要含有黄花夹竹桃次甙甲、黄花夹竹桃次甙乙、单乙酰黄花夹竹桃次甙乙及2～3种微量的其它强心甙。本文报道了用碱性苦味酸钠试剂比色测定其总甙含量及用高压液相层析分别测定各个组分含量的方法。高压液相层析是用YWG-CH填充柱(25cm×7.9mm i.d.),70%甲醇作流动相,几个组分能完全分离。若样品为果仁的强心甙提取物则需经硅胶柱净化后,再用高压液相层析测定。本法简便、快速、重现性好。曾用本法测定了一些不同来源的黄夹甙样品,并与生物检定结果比较,二者一致。     

Two new coumarin glycosides from Herpetospermum caudigerum

Phytochemical investigation on the seeds of Herpetospermum caudigerum afforded two new coumarin glycosides A and B (1 and 2), together with a known compound herpetolide A (3). Their structures were determined by spectroscopic methods, including 2D NMR techniques. Compound 3 exhibited cytotoxicity against HepG2 cells with IC₅₀ value of 6.47 μg/ml. Compound 2 showed anti-hepatitis B virus activity with HBsAg secretion by 33.1% at 200 μg/ml.     

乌棒子甙甲和甙乙的分离鉴定

从远志科植物乌棒子(Polygala caudata Rehd et Wils)的根皮和茎皮中分得四种(口山)酮类成分和一种甾醇甙,分别鉴定为优(口山)酮(Ⅰ),豆甾醇葡萄糖甙(Ⅱ),乌棒子甙甲(wubangziside A,Ⅲ),乌棒子甙乙(wubangziside B,Ⅳ)和芒果甙(Ⅴ)。本文报道两种新(口山)酮甙乌棒子甙甲和甙乙的结构测定以及三种已知化合物的鉴定工作。     

New dihydrochalcone glycosides from Lithocarpus litseifolius and the phenomenon of C–H→C–D exchange observed in NMR spectra of phenolic components

Two new dihydrochalcone glycosides named 6″-O-acetyltrilobatin (1) and 3″-O-acetylphloridzin (2) as well as four known compounds were isolated from the leaves of Lithocarpus litseifolius (Hance) Chun (family Fagaceae). Their structures were elucidated on the basis of spectroscopic analyses. The phenomena of C–H → C–D exchange were observed in NMR spectra of the isolated phenolic components when measured in deuterated methanol.