Total Synthesis of (±)-Butyl Ester of Rosmarinic Acid

来源 :中国化学快报:英文版 | 被引量 : 0次 | 上传用户:asdfghjkb
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
(±)-Butyl ester of rosmarinic acid 1 was synthesized by 5-step reactions through the two key intermediates 2 and 3, the total yield was 23.9% and 25.1%, respectively.
其他文献
The effect of Ultra-violet light on the structure and motion of the polyvinyl alcohol(PVA) chains was studied by 1H NMR, spin-lattice relaxation and IR spectros
Eighteen 1-aroyl-4-(2-iodobenzoyl)thiosemicarbazides and corresponding semicarbazides were synthesized in excellent yield under microwave irradiation in solvent
A series of novel fluorine-containing acrylates 6a-6g were synthesized via the condensation of ethyl cyanoacetate and trifluoroacetic anhydride, followed by chl
<正>烙画,亦称烙花、烫花、火笔画、"火针刺绣",被誉为"南阳三大宝"之一。它是利用碳化原理,通过控温技巧,不施任何颜料以烙为主、套彩为辅的表现手法,在竹木、宣纸、丝绢等
To search for a better prodrug of 4-aminosalicylic acid that is expected to deliver stably parent drug to colon against the inflammatory bowel disease, a novel
目的 分析Morison间隙区域巨大丰位病变的CT表现特点,探讨其诊断要点。材料和方法:Morson间隙区域8cm以上占位47例,其中肝源性23例,肾上腺源性9例,肾源性10例,后腹膜源性5例。均在Siemens公司Somatom Plus机上行平扫和增强扫描
探讨细支气管肺泡癌的影像学诊断价值。材料和方法:27例经病理学证的的BAC,每例胸X线平片检查,17例胸CT扫描、1例MRI检查,2例支气管动脉造影。
Two new ent-kaurenoids, 19-acetyl-ent-3β, 17-dihydroxykaur-15-ene (1), 19-acetyl-ent-3β-hydroxykaur-15-en-17-al (2) were isolated from Cacalia pilgeriana. The
目的探讨GE各系列CT机主要性能指标的实验研究.方法CT机质量控制检测是CT机应用中的重要环节,笔者采用Victoreen公司生产的AAPM体模、4000M+剂量仪及10cm笔型电离室对GE各系