白桦树脂酸 betulinic acid(0)   “白桦树脂酸”译为未确定词的双语例句      Isolation of chemical constituents were carried out in step with for effective part of H.petiolulatum by column chromatography. The chemical structures were identified by physical and spectral data analysis. Six constituents have been isolated and established as 3α-epi-betulinic acid (1),Patuloside A (2),dimethylpaxanthonin(3),Morusignin D (4),quercetin (5)and quercitrin (6)respectively for the first time.      从二氯甲烷及乙酸乙酯提取物中分离纯化得6个化合物,通过波谱数据分析,鉴定了结构,分别是:3α-表白桦树脂酸(3α-epi-betulinicacid,1),PatulosideA(2),Dimethylpaxanthonin(3),MorusigninD(4),槲皮素(Quercetin,5)和槲皮甙(Quercitrin,6). 短句来源   相似匹配句对      Study on Pollen Viability in Betula platyphylla      白桦花粉的生命力 短句来源      Research of Ectomycorrhiza of Betula Platyphylla Suk      白桦外生菌根的研究 短句来源      STUDIES ON THE POLYMERIZATION PROCESS OF RESIN ACIDS      树脂酸聚合反应过程的研究 短句来源      THE COMPOSITION OF RESIN ACIDS AND CRYSTALLIZATION OF ROSIN      树脂酸组成和松香结晶 短句来源 查询“白桦树脂酸”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                    Four compounds were isolated from Coleus carnosifolius. They were identified as betulic acid,betulin,oleanic acid and β sitosterol by spectral analysis and comparison with authentic samples.             从肉叶鞘蕊花中分离得到４个化合物，分别鉴定为白桦树脂酸，白桦树脂醇，齐墩果酸，β－胡萝卜甙。 文摘来源       相关查询: 树脂酸 白桦 树脂酸钴 树脂酸锰 白桦种苗 树脂酸钠 白桦林 树脂酸成分 树脂酸铜 树脂酸锌 白桦木质纤维素 松香树脂酸  对查询结果不满意

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