Back to results
US 5,344,938 AGranted
Indole 3-carboxylic acid derivatives
AssigneeKyowa Hakko Kogyo Co., Ltd.
InventorsMasaji Kasai, Hitoshi Arai, Hiroshi Nishikawa, Takehiro Ogasa, Masahiko Kinugawa, Shinji Tomioka
Life of this patent
Estimating the term…
Abstract
An indole derivative represented by formula (I): ##STR1## wherein R.sup.1 is a lower alkoxymethyl group or a formyl group, R.sup.2 is a lower alkyl group, R.sup.3 is a hydrogen atom or a lower alkyl group and R.sup.4 is a hydrogen atom or a lower alkyl group, which is useful as an intermediate for the synthesis of a compound, 5-aziridino-3-hydroxymethyl-l-methyl-2- (1H-indole-4,7-dione)prop-.beta.-ene-.alpha.-ol, which has antitumor activity.
Claims2
A compound represented by formula (I):
- ##STR11## wherein R.sup.2 is a lower alkyl group, R.sup.3 is a lower alkyl group and R.sup.4 is a lower alkyl group.
Dependencies are inferred from the claim text.