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    • 4. 发明申请
    • Process for total synthesis of pladienolide B and pladienolide D
    • 丙二烯内酯B和普拉二烯内酯D的全合成方法
    • US20080021226A1
    • 2008-01-24
    • US11580047
    • 2006-10-13
    • Regina KanadaDaisuke ItoTakashi SakaiNaoki AsaiYoshihiko KotakeJun Niijima
    • Regina KanadaDaisuke ItoTakashi SakaiNaoki AsaiYoshihiko KotakeJun Niijima
    • C07D313/00C07D303/02
    • C07D493/04C07D303/12C07D303/14C07D313/00C07D315/00C07D405/12C07D407/06Y02P20/55
    • [Problems to be Solved]To provide an effective process for total synthesis of pladienolide B and pladienolide D having excellent anti-tumor activity and to provide useful intermediates in the above-described process. [Measure for Solving the Problem]A process for producing a compound represented by Formula (11): wherein P1, P7, P8, P9 and R1 are the same as defined below, characterized by including reacting a compound represented by Formula (12): wherein P7 means a hydrogen atom or a protecting group for hydroxy group; R1 means a hydrogen atom or a hydroxy group, with a compound represented by Formula (13): wherein P1 means a hydrogen atom or a protecting group for hydroxy group; P8 means a hydrogen atom, an acetyl group or a protecting group for hydroxy group; P9 means a hydrogen atom or a protecting group for hydroxy group; or P8 and P9 may form together a group represented by a formula: wherein R5 means a phenyl group which may have a substituent, in the presence of a catalyst.
    • [待解决的问题]为了提供具有优异的抗肿瘤活性的普拉二烯内酯B和普拉二烯内酯D的全合成的有效方法,并且在上述方法中提供有用的中间体。 [解决问题的措施]制备由式(11)表示的化合物的方法:其中P 1,P 2,P 3, ,其中P 9和R 12与下述定义相同,其特征在于包括使由式(12)表示的化合物:其中P 是指氢原子或羟基的保护基; R 1表示氢原子或羟基,与式(13)表示的化合物:其中P 1是氢原子或羟基的保护基; “8”表示氢原子,乙酰基或羟基保护基; “9”表示氢原子或羟基的保护基; 或者P 9和P 9可以一起形成由下式表示的基团:其中R 5表示可以具有取代基的苯基, 在催化剂存在下。
    • 10. 发明授权
    • Winding shaft and a printer using the same
    • 绕线轴和使用其的打印机
    • US06328490B1
    • 2001-12-11
    • US09583190
    • 2000-05-30
    • Hiroshi NaritaMasahiko YamadaNaoki AsaiKenichiro Arai
    • Hiroshi NaritaMasahiko YamadaNaoki AsaiKenichiro Arai
    • B41J1126
    • B65H75/24B65H18/04B65H75/242
    • A winding shaft, for use in a printer allows a wound recording paper to be easily removed therefrom. The winding shaft includes a shaft main body, a winding portion and a support-removing member. The winding portion, which sandwiches the shaft main body, winds the recording paper therearound. The shaft main body includes a pair of support-removing members, which respectively project from the shaft main body. The two support-removing members are respectively supported on the two side portions of the shaft main body in such a manner that they can be freely rotated about their respective support shafts. A tension-coiled spring is bridgingly disposed between the two support-removing members, so that the two support-removing members remain in standing positions when no external force is applied to them. If the recording paper is lightly rotated in a direction opposite to the winding direction of the recording paper, then the two support-removing members are brought down in the same direction due to an external force applied thereto from the innermost peripheral recording paper. As a result, the innermost peripheral recording paper is loosened, that is, is caused to float loosely from the outer peripheral surface of the shaft main body, thereby enabling the removal of the recording paper from the winding shaft.
    • 用于打印机中的卷绕轴允许容易地从其上移除卷绕的记录纸。 卷绕轴包括轴主体,卷绕部分和支撑件移除部件。 卷绕轴主体的卷绕部分绕着记录纸卷绕。 轴主体包括分别从轴主体突出的一对支撑移除构件。 两个支撑移除部件分别支撑在轴主体的两个侧部上,使得它们能够绕其各自的支撑轴自由旋转。 张紧螺旋弹簧桥接地布置在两个支撑移除构件之间,使得当没有施加外力时,两个支撑件移除构件保持在竖立位置。 如果记录纸在与记录纸的卷绕方向相反的方向上轻微旋转,则两个支撑件移除部件由于从最内侧的周边记录纸施加到其上的外力而沿同一方向下降。 结果,最内侧的周边记录纸被松动,从而从轴主体的外周表面松动地浮动,从而能够从卷轴移除记录纸。