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- Leonuine was synthesized from syringic acid by acetylation,reaction with SOCl_ 2,Gabriel reaction et al,total yield is 18.95%. 本文中以丁香酸为原料;用醋酐进行乙酰化、酰氯化、盖布瑞尔等六步反应得到益母草碱;总收率为18.;95%25。
- The content of several mono-phenols(gallic acid,3,4-dihydroxybenzoic acid,syringic acid,ferulic acid,catechin and rutin hydrate) in Pinot Noir and Chardonnay were determined by such method. 测定了黑比诺和霞多丽中主要的几种单体酚(没食子酸、安息香酸、芦丁、丁香酸、阿魏酸、儿茶素)含量。
- A NEW METHOD TO SYRINGIC ACID SYNTHESIS 合成丁香酸的新方法
- Keywords syringic acid （SA）;anti endotoxin;Radix Isatidis （BLG）; 丁香酸;抗内毒素;板蓝根;
- Determination of Syringic Acid and Its Impurities by High Performance Liquid Chromatography 高效液相色谱法测定丁香酸及其杂质含量
- He gave me a taste of his acid wit. 他让我尝到了他敏锐尖刻之机智的滋味。
- Acid irritates the stomach lining. 酸能刺激胃黏膜。
- Acid had pitted the surface of the silver. 酸把银器的表面腐蚀了。
- Keywords medicinal chemistry;structure identification;NMR;syringic acid;megastigmane;tiliroside;leonurine;Leonurus japonicus Houtt; 药物化学;结构鉴定;核磁共振波谱;丁香酸;益母草碱;益母草;
- I am doing an experiment of neutralizing acid. 我在做一个中和酸的实验。
- Can Jones beat Smith? That's the acid test. 琼斯能击败史密斯吗？那是个严峻的考验。
- A salt or an ester of boric acid. 硼酸盐一种硼酸盐或硼酸酯
- She dropped acid in high school. 她高中时代服迷幻药。
- The metal is fretted with the acid. 金属被酸腐蚀。
- The chemical can behave as an acid. 这种化学制品能起酸的作用。
- The acid has eaten through the metal cover. 酸已把金属盖子蚀穿了。
- The worker's overalls were badly burned by acid. 这位工人的工作装被酸腐蚀得很厉害。
- An acid can react with a base to form a salt. 酸可以和碱起反应而生成盐。
- This substance must be treated with acid. 这材料得用酸来处理。
- The acid burnt a hole in the carpet. 酸把地毯烧了个洞。
