2-methylpent-2-enal). Resulting mixture of 4-isopropylbenzaldehyde and forcyclamen aldehyde was hydrogenated using different Ru/C catalysts. The products detected in hydrogenation reaction mixture were: desired cyclamen aldehyde, cyclamen alcohol and forcyclamen alcohol. The influence of catalyst type and amount, reaction temperature and hydrogen pressure on the reaction course was tested. The highest yield (19.4 %)
Compounds represented by the formula:
wherein R
1
and R
2
are hydrogen atom, a hydrocarbon group or a heterocyclic group, or R
1
and R
2
may form, together with the adjacent carbon atom, a 3- to 8-membered homocyclic or heterocyclic ring,
W indicates
(i) a group represented by the formula:
wherein ring B indicates a 5- to 7-membered ring, or
(ii) a group represented by the formula:
wherein R
4
indicates (1) an aliphatic hydrocarbon group, which may be substituted with an aromatic group, or (2) an acyl group containing an aromatic group, R
5
is hydrogen atom, a C
1-6
alkyl, or an acyl group, provided that, when W is Wa, R
3
is hydrogen atom, a hydrocarbon group or a heterocyclic group, when W is Wb, R
3
indicates a C
6-14
aryl group, or salts thereof or prodrugs thereof have an excellent action to inhibit neurodegeneration and the like as well as an excellent brain penetrability and are low in the toxicity, thereby being useful as prophylactic or therapeutic drugs for nerve degenerative diseases and the like.
Promoters for the proliferation and differentiation of stem cells and/or neuron precursor cells
申请人:——
公开号:US20040034049A1
公开(公告)日:2004-02-19
An agent for promoting the proliferation or differentiation of a stem cell and/or neural progenitor cell, comprising a compound represented by Formula:
1
wherein each of R
1
and R
2
is H, a hydrocarbon group or a heterocyclic group, or taken together with the adjacent carbon atom to form a ring, R
3
is H, a hydrocarbon group or a heterocyclic group, W is a group represented by Formula:
2
wherein Ring A is an optionally substituted benzene ring, Ring B is an optionally substituted 5- to 7-membered nitrogen-containing heterocyclic ring, R
4
is an acyl group having an aliphatic hydrocarbon group, which is substituted by an aromatic group and may have a further substitutent, or aromatic group, R
5
is H, C
1-6
alkyl or acyl, R
4c
is an aromatic group, an aliphatic hydrocarbon group or acyl, and
X is O or S;
Y is O, S or NH, Ring C is an optionally substituted benzene ring, or a salt or prodrug thereof is provided.
A cannabinoid receptor modulator containing a compound represented by Formula (I
0
)
wherein, X is an oxygen atom, etc., R
0
is an optionally substituted acylamino group, ring A
0
is a benzene ring which may further have a substituent in addition to R
0
, and ring B is an optionally substituted 5-membered heterocycle, or a salt thereof or a prodrug thereof.
Agents for promoting the proliferation or differentiation of stem cells or neural progenitor cells
申请人:Okawa Shigenori
公开号:US20090012081A1
公开(公告)日:2009-01-08
An agent for promoting the proliferation or differentiation of a stem cell and/or neural progenitor cell, comprising a compound represented by Formula:
wherein each of R
1
and R
2
is H, a hydrocarbon group or a heterocyclic group, or taken together with the adjacent carbon atom to form a ring, R
3
is H, a hydrocarbon group or a heterocyclic group, W is a group represented by Formula:
wherein Ring A is an optionally substituted benzene ring, Ring B is an optionally substituted 5- to 7-membered nitrogen-containing heterocyclic ring, R
4
is an acyl group having an aliphatic hydrocarbon group, which is substituted by an aromatic group and may have a further substitutent, or aromatic group, R
5
is H, C
1-6
alkyl or acyl, R
4c
is an aromatic group, an aliphatic hydrocarbon group or acyl, and
X is O or S;
Y is O, S or NH, Ring C is an optionally substituted benzene ring, or a salt or prodrug thereof is provided.