申请人:Kanada Mikie Regina
公开号:US20080021226A1
公开(公告)日:2008-01-24
[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 P
1
, P
7
, P
8
, P
9
and R
1
are the same as defined below, characterized by including reacting a compound represented by Formula (12):
wherein P
7
means a hydrogen atom or a protecting group for hydroxy group; R
1
means a hydrogen atom or a hydroxy group, with a compound represented by Formula (13):
wherein P
1
means a hydrogen atom or a protecting group for hydroxy group; P
8
means a hydrogen atom, an acetyl group or a protecting group for hydroxy group; P
9
means a hydrogen atom or a protecting group for hydroxy group; or P
8
and P
9
may form together a group represented by a formula:
wherein R
5
means a phenyl group which may have a substituent, in the presence of a catalyst.
解决的问题:提供一种有效的全合成过程,用于合成具有出色抗肿瘤活性的pladienolide B和pladienolide D,并在上述过程中提供有用的中间体。
解决问题的措施:一种制备由下式(11)表示的化合物的方法:
其中P1、P7、P8、P9和R1如下定义,其特征在于包括将由下式(12)表示的化合物与由下式(13)表示的化合物在催化剂存在下反应:
其中P7表示氢原子或羟基的保护基团;R1表示氢原子或羟基;
其中P1表示氢原子或羟基的保护基团;P8表示氢原子、乙酰基团或羟基的保护基团;P9表示氢原子或羟基的保护基团;或P8和P9可共同形成下式所示的基团:
其中R5表示可能具有取代基的苯基。