GABA-uptake inhibitors: construction of a general pharmacophore model and successful prediction of a new representative
摘要:
A model for the pharmacophore of GABA-uptake inhibitors was established using published structure-activity data and molecular modeling. The model accounted for the activities of different classes of GABA-uptake inhibitors. Analogues of guvacine substituted at position 6 were synthesized in order to confirm the model. 6-(3,3-Diphenylpropyl)guvacine (30f), which fit well with the pharmacophore, had an in vitro IC50 of 0.1-mu-M. This value is as good as those of the best GABA-uptake inhibitors known today.
A practical, highly enantioselective method for the synthesis of short-chain aliphatic beta-amino acidesters was developed starting from prochiral and easily accessible Substrates. This chemoenzymatic approach is based oil a nonenzymatic aza-Michael addition of benzylamine to enoates and subsequent lipase-catalyzed resolution via enantioselective aminolysis. The two reactions are carried out as a
Process for producing either optically active n-substituted beta-amino acid and optically active n-substituted beta-amino acid ester or optically active n-substituted 2-homopipecolic acid and optically active n-substituted 2-homopipecolic acid ester
申请人:Miyata Hiroyuki
公开号:US20050170473A1
公开(公告)日:2005-08-04
The present invention discloses a process which comprises selectively hydrolyzing one enantiomer of racemic mixtures of an N-substituted β-amino acid alkyl ester or N-substituted 2-homopipecolic acid ester represented by the formula (I):
wherein Ar, R
1
, R
2
, R
3
, R
4
and R
5
are the same as defined in the specification,
in the presence of a hydrolase to form an optically active ((R) or (S))-N-substituted-β-amino acid or optically active ((R) or (S))-N-substituted 2-homopipecolic acid represented by the formula (II):
and simultaneously to obtain an unreacted optically active ((S) or (R))-N-substituted β-amino acid alkyl ester or unreacted optically active ((S) or (R))-N-substituted 2-homopipecolic acid ester represented by the formula (III):
which has a reverse steric absolute configuration to that of the compound represented by the formula (II).
PROCESS FOR PRODUCING EITHER OPTICALLY ACTIVE N-SUBSTITUTED BETA-AMINO ACID AND OPTICALLY ACTIVE N-SUBSTITUTED BETA-AMINO ACID ESTER OR OPTICALLY ACTIVE N-SUBSTITUTED 2-HOMOPIPECOLIC ACID AND OPTICALLY ACTIVE N-SUBSTITUTED 2-HOMOPIPECOLIC ACID ESTER
申请人:Ube Industries, Ltd.
公开号:EP1493819A1
公开(公告)日:2005-01-05
The present invention discloses a process which comprises selectively hydrolyzing one enantiomer of racemic mixtures of an N-substituted β-amino acid alkyl ester or N-substituted 2-homopipecolic acid ester represented by the formula (I):
wherein Ar, R1, R2, R3, R4 and R5 are the same as defined in the specification,
in the presence of a hydrolase to form an optically active ((R) or (S))-N-substituted β-amino acid or optically active ((R) or (S))-N-substituted 2-homopipecolic acid represented by the formula (II):
and simultaneously to obtain an unreacted optically active ((S) or (R))-N-substituted β-amino acid alkyl ester or unreacted optically active ((S) or (R))-N-substituted 2-homopipecolic acid ester represented by the formula (III):
which has a reverse steric absolute configuration to that of the compound represented by the formula (II).
GABA-uptake inhibitors: construction of a general pharmacophore model and successful prediction of a new representative
作者:Victor N'Goka、Gilbert Schlewer、Jean Michel Linget、Jean Pierre Chambon、Camille Georges Wermuth
DOI:10.1021/jm00112a032
日期:1991.8
A model for the pharmacophore of GABA-uptake inhibitors was established using published structure-activity data and molecular modeling. The model accounted for the activities of different classes of GABA-uptake inhibitors. Analogues of guvacine substituted at position 6 were synthesized in order to confirm the model. 6-(3,3-Diphenylpropyl)guvacine (30f), which fit well with the pharmacophore, had an in vitro IC50 of 0.1-mu-M. This value is as good as those of the best GABA-uptake inhibitors known today.