Synthesis of Optically Active β-Alkyl-α-methylene-γ-butyro- lactones from Enantioselective Biotrans

来源 :Chinese Journal of Chemistry | 被引量 : 0次 | 上传用户:ntsx888
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
A new approach to optically active β-alkyl-α-methylene-γ-butyrolactone derivatives was reported from the Rhodococcus sp. AJ270-catalyzed hydrolysis of appropriate nitriles. The inversion of enantioselectivity of the amidase has been observed when a methyl protection was introduced into the hydroxy group of the parent substrate. A new approach to optically active β-alkyl-α-methylene-γ-butyrolactone derivatives was reported from the Rhodococcus sp. AJ270-catalyzed hydrolysis of appropriate nitriles. The inversion of enantioselectivity of the amidase has been observed when a methyl protection was introduced into the hydroxy group of the parent substrate.
其他文献
龙舞庚辰功勋卓著,蛇荣辛巳岁月光辉。时光荏苒,迢迢不停。惜别2012年的收获与荣誉,怀抱憧憬和希望,《微纳电子技术》即将踏上新一年的征程。岁月不居,天道酬勤。过去的一年
索绪尔在他所创立的结构主义语言学派中,提出了把语言学分为共时语言学与历时语言学,并阐明了它们各自的特点,从而将自己定义的内部语言学又一分为二,即共时语言学和历时语言
b Institute of Oceanography and Environment, Xiamen University, Xiamen, Fujian 361005, China In this paper, a new ligand, 2,9 bis[ N,N bis(carboxymeth
期刊
植物体内特别是叶片N、P含量特征一直是植物生理生态学研究的一个热点。以内蒙古黑里河、北京松山、山西太岳山3个地区的油松林为研究对象,分析了油松和阔叶乔木叶片N、P化学
一、斯坦福大学Stanford University,California,USA(1)本科课程设置for undergraduate students1.普通话初级Beginning Level Mandarin1)现代汉语First--Year Modem Chinese
A selective and sensitive method for determination of platinum and palladium(II) in an aqueous solution simultaneously by laser thermal lens spectrometry, based
期刊
人类的起源与语言的起源是考古学家和人类学家长期争论不休的问题。美国纽约大学考古学家兰德尔·怀特(Randall White)推测:直到三万五千年前的旧石器时代晚期,人们才掌握了
美韩科学家携手合作 ,成功实现了光波在晶体中的完全静止。专家表示 ,该研究成果将推进量子计算机的开发 ,有助于改进量子计算机信息储存技术 ,大大增强计算机信息处理能力。
《枕上无梦》的舞美设计以中国传统艺术精神为出发点,运用写意的手法对场景进行简约化的表现,将“形与神”、“意与境”在有限空间里得到无限表达与延伸。这种诗意般、禅意化
Gold nanoparticles were immobilized onto the electrode surface by simple self-assembly technique. Interestingly, the ensembles of these nanoparticles exhibit qu
期刊