Processes and compounds for preparing histone deacetylase inhibitors and intermediates thereof
申请人:Helquist Paul
公开号:US20070021612A1
公开(公告)日:2007-01-25
Processes for preparing unsaturated esters useful as intermediates for HDAC inhibitors, by reacting an aldehyde or ketone with compounds having the following formula XX:
wherein R
8
is an aliphatic group, an aromatic group, or a combined aliphatic and aromatic group; R
9
and R
10
are each independently hydrogen, an aliphatic group, an aromatic group, a combined aliphatic and aromatic group, or R
10
forms a double bond with L
2
or X
3
; R
11
and R
12
are each independently an aliphatic group, an aromatic group, or a combined aliphatic and aromatic group; L
2
is an aliphatic linking group, an aromatic linking group, or a combined aliphatic and aromatic linking group; A is P or As; L
2
being selected so that the number of carbon atoms directly in the carbon chain between the R
8
and R
9
groups is at least 4, X
1
and X
2
are each independently O or a single bond, and X
3
is O or forms R
13
and double bond with R
10
, wherein R
13
is an aliphatic group, an aromatic group, or a combined aliphatic and aromatic group.