【摘 要】
：
Two novel 4,5-secoeudesmane sesquiterpenoids,oxyphyllones A(1) and B(2) were isolated from the fruits of Alpinia oxyphylla.Their structures were established by
【机 构】
：
State Key Laboratory of Phytochemistry and Plant Resources in West China,Kunming Institute of Botany
【出 处】
：
Chinese Chemical Letters
论文部分内容阅读
Two novel 4,5-secoeudesmane sesquiterpenoids,oxyphyllones A(1) and B(2) were isolated from the fruits of Alpinia oxyphylla.Their structures were established by spectroscopic methods including 1D and 2D NMR spectra.These two compounds are the first example of naturally occurring sesquiterpenoids with a 4,5-secoeudesmane skeleton in the family of Zingiberaceae and oxyphyllone A(1) is the first 4,5-secoeudesmane type of 13-norsesquiterpenoid.Compounds 1 and 2 exhibited no cytotoxicities against three cancer cell lines at 10μg/mL.
Two novel 4,5-secoeudesmane sesquiterpenoids, oxyphyllones A (1) and B (2) were isolated from the fruits of Alpinia oxyphylla. Their structures were established by spectroscopic methods including 1D and 2D NMR spectra. These two compounds are the first example of naturally occurring sesquiterpenoids with a 4,5-secoeudesmane skeleton in the family of Zingiberaceae and oxyphyllone A (1) is the first 4,5-secoeudesmane type of 13-norsesquiterpenoid. Compounds 1 and 2 presenting no cytotoxicities against three cancer cell lines at 10 μg / mL.
其他文献
克胜集团为加强对营销团队新生力量的管理和培养,今年在市场营销经理大专班中择优选用24名大专生为市场营销助理,派往全国十多个重点省份,协助市场营销经理从事产品宣传推广
出门在外留学的同学,大多数都有打工的经历。毕竟留学需要一笔不小的开支,如果能用自己挣的钱来旅游,才能更心安理得地游山玩水。留学艰难,打工更不易。本期艳扬就与我们分享
运用文献资料法、专家访谈法、逻辑分析法,从土家竹马运动的起源入手,收集整理土家竹马的演变项目,包括高脚戏、高脚灯、竞艺、高脚竞速、竹马角斗对抗等,结合土家竹马运动的
关键词:·挑选导演,《哈利·波特》定基调·哈利·波特需要渐人佳境《哈利·波特与魔法石》Harry Potter and the Sorcerer’S Stone(2001)最初《哈利·波特》的导演是斯皮尔
《无人区》里的许多细节气质都与好莱坞和意大利的西部片十分吻合。尤其是徐峥、多布吉和黄渤的三角关系让人不禁想到了塞吉尔·里昂的《黄金三镖客》（又名《好坏丑》）。那
文中提出了时钟方程的概念,提出了考虑时钟变量时的触发器的特性方程;从而给出了一种既适用于同步时序电路也适用于异步时序电路的分析方法。
In this paper, the concept o
本文叙述了最新技术水平的毫米波低噪声器件的设计和研制,每种器件都以高电子迁移率晶体管技术为基础,它们都适用于集成化毫米波接收机。这些器件包括40、60和70千兆赫放大器
本文研究了硅中离子注入层的红外瞬态退火,证实了它与常规热退火具有相同的再结晶机理——固相外延再结晶过程.对于注As~+和注B~+样品的测试表明,红外瞬态退火具有电激活率高
受实测数据变异性大的影响,路面实测温度的丰富信息往往未得到充分挖掘,现有的路面温度预测模型也大多将变异性当作“纯随机性”而不加考虑。为充分揭示路面实测温度的分布规
三 1981年，胡润芝第一次参加了宝丰县杨庄镇的马街村书会。后来，她成为8届马街书会的说书状元。那时的马街书会名不见经传，规模、名气和山东的胡集书会差不多。 为了造势，这一年宝丰邀请了著名评书演员刘兰芳临会献艺。一听说刘兰芳要来，现场人山人海，盛况空前。刘兰芳在会上说的是《岳飞传》。之后，刘兰芳5次赴会，还捐款在宝丰影剧院东建了兰芳书楼。 胡润芝说，刘兰芳带来了轰动效应，以后，宝丰县每年