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.
iodine(III)-mediated intramolecular dearomative spirocyclization of indole derivatives to generate highly strained spirocyclobutyl, spirocyclopentyl, and spirocyclohexyl indolenines in moderate to good yields. A set of structurally novel, densely functionalized spiroindolenines with broad functional group compatibility was efficiently constructed in this way under mild reaction conditions. Moreover