The compounds of the invention are compounds represented by the following general formula (1):
1
wherein E represents one selected from the group consisting of a methylidyne group and a nitrilo group, R
1
represents one selected from the group consisting of optionally substituted aryl groups and optionally substituted heteroaryl groups, R
2
represents one selected from the group consisting of a hydrogen atom and alkyl groups, W
1
represents an amino acid residue, A represents one selected from the group consisting of a carbonyl group and a sulfonyl group, X
1
represents one selected from the group consisting of optionally substituted alkylene groups and optionally substituted alkenylene groups, and p represents 0 or 1;
and their pharmacologically acceptable salts, which exhibit thrombopoietin-like activity.
The compounds of the invention are compounds represented by the following general formula (1):
wherein E represents one selected from the group consisting of a methylidyne group and a nitrilo group, R1 represents one selected from the group consisting of optionally substituted aryl groups and optionally substituted heteroaryl groups, R2 represents one selected from the group consisting of a hydrogen atom and alkyl groups, W1 represents an amino acid residue, A represents one selected from the group consisting of a carbonyl group and a sulfonyl group, X1 represents one selected from the group consisting of optionally substituted alkylene groups and optionally substituted alkenylene groups, and p represents 0 or 1; and their pharmacologically acceptable salts, which exhibit thrombopoietin-like activity.
N-(pyridin-4-yl)-(indol-3-yl)alkylamides 44-84 has been prepared in the search of novel antiallergic compounds. Synthesis of the desired ethyl (2-methyindol-3-yl)acetates 1-4 was achieved by indolization under Fischer conditions; Japp-Klingemann method followed by 2-decarboxylation afforded the ethyl (indol-3-yl)alkanoates 17-25. Amidification was successfully carried out by condensation of the corresponding