Process for total synthesis of pladienolide B and pladienolide D
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.
There provided a 12-membered-ring macrolactam derivative having antitumor activity: A compound represented by Formula (1) or a salt thereof. In this Formula, R
1
is a hydrogen atom, a C
1-6
alkyl group, a C
1-6
alkylcarbonyl group or a C
6-14
arylcarbonyl group; R
2
is a hydrogen atom or a C
1-6
alkyl group; R
3
is a hydrogen atom or a hydroxyl group; R
4
is a hydrogen atom or a hydroxyl group; R
5
is a hydrogen atom or a C
1-6
alkyl group; R
6
is a hydrogen atom or a hydroxyl group; and R
7
is an acetyl group or the like.
TARGET MOLECULES OF PLADIENOLIDES, COMPOUNDS BINDING TO SUCH TARGET MOLECULES, AND SCREENING METHOD THEREOF
申请人:Kotake Yoshihiko
公开号:US20090227795A1
公开(公告)日:2009-09-10
A method of measuring the binding activity of a test compound to a splicing factor 3
b
(SF3
b
), which comprises the following steps of:
(a) contacting a labeled pladienolide compound and a test compound with a cell or a cell fraction; and
(b) measuring the distribution of the bound labeled compound.
The method enables to screen for a novel active compound capable of acting on (binding to) a pladienolide target molecule or the like.
The present invention relates to a compound represented by the formula (I):
(wherein, R
3
, R
6
, R
7
and R
21
are the same as or different from one another and each represents a hydroxyl group etc.), a pharmacologically acceptable salt thereof or a hydrate of them. The compound (I) of the present invention suppresses angiogenesis, in particular, suppresses VEGF production in a hypoxic condition and is useful as a therapeutic agent for treating solid cancer.
The present invention provides a novel bioactive substance having an antitumor activity and a process for producing it, and a medical use thereof. Namely, it provides a 12-membered ring macrolide compound represented by the following formula obtained from the incubation solution of
Streptomyces
sp. Mer. 11107 or a variant thereof, a pharmacologically acceptable salt thereof or a hydrate of them, and a process for producing it.