Indene compounds.

摘要

The invention provides an indene compound represented by the following general formula (I):
<Chemistry id="chema01" num="0001"><Image id="ia01" he="30" wi="70" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>wherein R<Sub>1</Sub> means a lower alkyl group, R<Sub>2</Sub> and R<Sub>3</Sub> denote a lower alkyl group individually or an alkylenedioxy group in combination, and R<Sub>4</Sub> and R<Sub>5</Sub> mean individually a substituted or unsubstituted lower alkyl or aryl group or in combination a substituted or unsubstituted piperidino, piperazinyl or homopiperazinyl group together with the adjacent nitrogen atom, with a proviso that not both R<Sub>4</Sub> and R<Sub>5</Sub> are a methyl group at the same time.