白桦酸 betulinic acid(16)   betulinic acid      2: betulin; 3: betulinic acid;      2：白桦醇(betulin)：3：白桦酸(betulinic acid)； 短句来源      Results Seven compounds were isolated and the structures of these compounds were identified as oleanolic acid(1),betulinic acid(2),3-O-acetyl pomolic acid(3),ethyl chlorogenate(4),protocatechuic acid(5),gallic acid(6),kojic acid(7),respectively.      结果分离得到7个化合物,分别鉴定为齐敦果酸(oleanolicacid,1)、白桦酸(betulinic acid,2)、3O乙酰坡模酸(3Oacetyl pomolic acid,3)、绿原酸乙酯(ethylchlorogenate,4)、原儿茶酸(protocatechuic acid,5)、没食子酸(gallic acid,6)、曲酸(kojic acid,7)。 短句来源      Results Isolation of the 60 % ethanol extract of the stems of Sambucus williamsii Hance affored five triterpenes and 2 steroids,including betulin(1),betulinic acid(2),oleanolic acid(3),ursolic acid(4),α-amyrin(5),stigmasterol(6) and sitosterol-3-glucoside(7).      结果分离得到了5个三萜苷元类化合物,包括白桦醇(betulin,1)、白桦酸(betulinic acid,2)、齐墩果酸(oleanolic acid,3)、熊果酸(ursolic acid,4)、α香树脂醇(αamyrin,5),同时还分离到了2个甾醇类化合物,豆甾醇(stigmasterol,6)、胡罗卜苷(sitosterol 3 glucoside,7)。 短句来源      Results Seven compounds were isolated and identified. Their structures were established as 3,5,7-trihydroxylchromone 3-O-β-D-xylopyranoside (I), taraxerol (II), β-sitosterol (III), betulinic acid (IV), quercetin (V), quercetin-3-O-α-L-rhamnopyranoside (VI), and D-glucose (VII).      结果　分离并鉴定了 7个化合物,其结构分别为 3, 5, 7 三羟基色原酮 -3- O -β- D- 吡喃木糖苷(I),蒲公英赛醇(II),β 谷甾醇(III),白桦酸 (IV),槲皮素 (V),槲皮素- 3- O -α -L 鼠李糖苷 (VI)和葡萄糖(VII)。 短句来源      The influence of 23-hydroxyl betulinic acid on the proliferation and migration of blood vessel endothelial cell      23-羟基白桦酸对血管内皮细胞增殖和迁移的影响 短句来源 更多          “白桦酸”译为未确定词的双语例句      By FCM methods, the apoptotic rates of LoVo cells were 11.32%±0.92%, 19.23%±0.78%, 24.51%±5.88%, 42.22%±2.32%, after treatment of 23-hydroxybetulinic acid at concentrations 25, 50, 100, 200 μmol·L-1, which showed obvious concentration-dependent relationship.      23-羟基白桦酸25、50、100及200μmol·L-1作用LoVo细胞48h后,其凋亡率分别为11.32%±0.92%、19.23%±0.78%、24.51%±5.88%及42.22%±2.32%,显示一定的剂量依赖性关系。 短句来源      Result: Six compounds were obtained and the structures were identified as 14-deoxycoleon U(1),demethylcryptojaponol(2),α-amyrin(3),betulic acid(4),α-cedrol(5) and β-sitosterol(6).      结果:分离并鉴定出6个化合物,即14-deoxycoleon U(1),demethylcryptojaponol(2),-αamyrin(3),白桦酸(4),α-雪松醇(5)和β-谷甾醇(6)。 短句来源      Determination of 23-hydroxylbetulinic acid in 23-Hydroxylbetulinic Acid Injection by HPLC      HPLC法测定23-羟基白桦酸注射液中23-羟基白桦酸的含量 短句来源      The purpose of this work is to study the preparation and pharmacokinetics in mice of tritium-labeled 23-hydroxylbetulinic acid (3H-23-HBA).      制备氚标23-羟基白桦酸(3H-23-HBA),并对其在正常鼠及荷瘤鼠的体内分布进行初步探索。 短句来源      Role of reactive oxygen species in 23-hydroxybetulinic acid-induced apoptosis in LoVo cells      23-羟基白桦酸诱导LoVo细胞凋亡与细胞内活性氧的关系 短句来源 更多          相似匹配句对      Recent Advances of Betulinic Acid and Its Derivatives      白桦酸及其衍生物的研究进展 短句来源      Betulin and betulinic acid are remarkable natural products.      白桦脂醇和白桦脂酸是非常有价值的天然产物。 短句来源      Oleanolic acid      齐墩果酸 短句来源      Hyaluronic Acid      透明质酸 短句来源      Study on Pollen Viability in Betula platyphylla      白桦花粉的生命力 短句来源 查询“白桦酸”译词为用户自定义的双语例句     我想查看译文中含有：的双语例句 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法，我们为您准备了出自英文原文的大量英语例句，供您参考。   betulinic acid Activation of apoptosis by derivatives of betulinic acid in human tumor cells in vitro 例句来源       Two methods of obtaining 3α-betulinic acid and related compounds from their 3β-epimers were studied: the reaction of bimolecular substitution and the stereoselective reduction of 3-ketoderivatives. 例句来源       Practically the same mixture of betulinic acid epimers was obtained when reducing betulonic acid with L-Selectride. 例句来源       The cytotoxic activity of 3α-betulinic acid increased toward the Bro melanoma cells and decreased toward the MS melanoma cells. 例句来源       Synthesis and Antiviral Activity of Hydrazides and Substituted Benzalhydrazides of Betulinic Acid and Its Derivatives 例句来源       更多                    The structure of anemosapogenin 1 has been proved to be 3β, 23-dihydroxylup-20 (29)-en-28-oic acid on the basis of spectroscopic(IR, ~1H NMR、~(13)C NMR, MS) evidences and chemical transformations, namely, the formation of acetonide 3 from 6, the acid catalysed rearrangement of 1 and 2 into 18 (α)-oleanan-28, 19β-olide derivatives 4 and 5 respectively and finally, the conversion of 7 through LiAlH_4 reduction into the known compound, lup-20(29)-ene-3β, 23, 28-triol. The third sugar component of the saponin i...             通过波谱和化学反应如丙酮缩合物和28,19β-内酯的生成,并最后转变到已知的Δ~(20(29))-羽扇豆烯-3β,23,28-三醇,证明白头翁皂素配基1的结构为23-羟基白桦酸.一种未经鉴定的单糖为阿拉伯糖. 文摘来源          From the aerial part of Rabdosia adenoloma,ten compounds were isolated and identified as effusanin A (1),effusanin E (2 ), 4', 7-dimethoxylapigenin (3 ),β-sitosterol (4 ), cryptomeridiol (5 ), uvaol (6 ), betulinino acid (7 ), oleanolic acid (8 ), ursolic acid (9 ) and oleanolic acid - 3 - O- a- L- rhamnopyranosyl- (1→2 ) [β- D- glu copyranosyl- (1→4 1-a-L-ara binopyranosidie(10 ) by spectral and chemical evidence. Oleanolic acid exists as the main constituent and all the compounds are first reported in thi...             从腺叶香茶菜［Rabdosiaadenoloma（Hand．－Mazz．）Hara］地上部分的乙醇提取物中共分离出10个化合物．经EIMS、1HNMR和13CNMR等波谱和化学方法分别鉴定为：effusaninA（1）、effusaninE（2）、洋芹素－4＇，7－二甲醚（3）、β－谷甾醇（4）、柳杉二醇（5）、Uvaol（6）、白桦酸（7）、齐墩果酸（8），乌苏酸（9），齐墩果酸－3－O－α－L－鼠李吡喃糖基（1→2）［β－D－葡萄吡喃糖基－（1→4）］－α－L－阿拉伯吡喃糖甙（10）．其中8的含量高达1％以上．上述化学成分均为首次从该植物中分离得到． 文摘来源          Seven triterpenoids were isolated for the first time from the ethanol extract of seed of Trigonella foenum-graecum L., six of them were identified as lupeol, 31-norcycloartanol, betullin, betulinic acid, soyasaponin I, and soyasaponin I methyl ester by physico-chemical properties and spectral analysis.             从豆科植物胡芦巴Trigonellafoenum－graecumL．种子的乙醇提取物中分得7个三萜类化合物（包括3个三萜皂苷和4个三萜），通过测定理化常数、光谱数据等，鉴定了其中6个化合物的结构，分别为羽扇豆醇、31-去甲环阿尔廷醇、白桦醇、白桦酸、大豆皂苷Ⅰ和大豆皂苷Ⅰ甲酯。各化合物均为首次从胡芦巴中分得，亦为胡芦巴属植物中首次报道。 文摘来源   << 更多相关文摘         相关查询: 白桦酯酸 白桦脂酸 白桦酸衍生物 白桦 酸( 酸 酸） 白桦酯酸7＇ 23-羟基白桦酸 醛糖酸 酸膏 白桦树液  对查询结果不满意

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