会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 3. 发明授权
    • Process for producing optically active &ggr;-butyrolactone
    • 光学活性γ-丁内酯的制备方法
    • US06608214B2
    • 2003-08-19
    • US10199136
    • 2002-07-19
    • Tsukasa SotoguchiTakaji MatsumotoMotonobu TakenakaTakashi Miura
    • Tsukasa SotoguchiTakaji MatsumotoMotonobu TakenakaTakashi Miura
    • C07D30733
    • C07D307/33C07B2200/07C07C67/31Y02P20/55C07C69/734
    • This invention provides a novel process for producing optically active 3-hydroxy-&ggr;-butyrolactone in a short step, which is superior economically and in efficiency and industrially suitable by using a starting material which is inexpensive and easily available and reagents easy to handle. This invention relates to a process for producing optically active 3-hydroxy-&ggr;-butyrolactone represented by formula I: wherein the symbol * means an asymmetric carbon atom, which comprises hydrogenating an optically active 4-substituted oxy-3-hydroxybutyrate represented by formula II: wherein R1 represents a C1-4 lower alkyl group, R2 represents a protective group for a hydroxyl group deprotected by hydrogenation with a heterogeneous hydrogenation catalyst, and the symbol * has the same meaning as defined above, in the presence of a heterogeneous hydrogenation catalyst and an acidic substance followed by deprotection and simultaneous ring closure thereof.
    • 本发明提供了一种在短时间内制备光学活性3-羟基-γ-丁内酯的新方法,其经济性和效率都优异,在工业上适用于便宜且易于获得的试剂和易于处理的试剂。 本发明涉及一种由式I表示的光学活性3-羟基-γ-丁内酯的制备方法:其中符号*表示不对称碳原子,其包括将由式II表示的光学活性的4-取代的氧基-3-羟基丁酸 :其中R1表示C1-4低级烷基,R2表示通过异相氢化催化剂氢化脱保护的羟基的保护基,符号*具有与上述相同的含义,在非均相加氢催化剂存在下 和酸性物质,然后脱保护并同时闭环。
    • 10. 发明授权
    • Simulation apparatus and control method of simulation
    • 仿真设备及其仿真控制方法
    • US07673265B2
    • 2010-03-02
    • US11851058
    • 2007-09-06
    • Takashi AkibaTakashi Miura
    • Takashi AkibaTakashi Miura
    • G06F17/50G06F9/455
    • G06F17/5022
    • A simulation apparatus, including a first simulator assigning an operating cycle number, a second simulator assigning an operating cycle number, and a control portion for synchronously controlling the first simulator and the second simulator, the control portion causing communication between the first simulator and the second simulator so as to control control-information and synchronous-information of the first simulator and the second simulator, the control-information controlling operations of the first simulator and the second simulator, wherein the control portion sets up the operating cycle numbers of the first simulator and the second simulator at a first cycle value when a synchronous condition of the synchronous-information is established, the control portion sets up at least one of the operating cycle numbers of the first simulator and the second simulator at a second cycle value being larger than the first cycle value when the synchronous condition of the synchronous-information is not established.
    • 一种模拟装置,包括分配操作周期数的第一模拟器,分配操作周期数的第二模拟器和用于同步控制第一模拟器和第二模拟器的控制部分,所述控制部分引起第一模拟器与第二模拟器之间的通信 模拟器,以便控制第一模拟器和第二模拟器的控制信息和同步信息,第一模拟器和第二模拟器的控制信息控制操作,其中控制部分设置第一模拟器的操作周期数 并且当所述同步信息的同步状态被建立时,所述第二模拟器处于第一周期值,所述控制部分以第二周期值设定所述第一模拟器和所述第二模拟器的操作周期数中的至少一个, 同步信息的同步状态时的第一个周期值 没有建立。