Therapeutic agent for thrombocytopenia and indolocarbazole derivatives
US5629304A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1996 |
| Grant date | May 13, 1997 |
| Priority date | — |
| Expiry date | Apr 25, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D487/14
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention provides a method of treating thrombocytopenia, which comprises administering to a patient suffering from thrombocytopenia, an effective amount of an indolocarbazole derivative represented by formula (I): ##STR1## wherein R.sup.1 represents a hydrogen atom, a substituted or unsubstituted lower alkyl group, a substituted or unsubstituted aralkyl group or a tetrahydropyranyl group; R.sup.2A and R.sup.3A, which may be the same or different, each represent a hydrogen atom, a substituted or unsubstituted lower alkyl group, a lower alkenyl group, a substituted or unsubstituted aralkyl group or a monosaccharide residue where a hydroxyl group at the anomer position is removed; R.sup.4A and R.sup.5A, which may be the same or different, each represent a hydrogen atom, a formyl group, a hydroxyl group or a halogen atom; W.sup.A1 and W.sup.A2 represent hydrogen atoms or are combined together to form an oxygen atom; and X.sup.A1 and X.sup.A2 represents two hydrogen atoms or are combined together to form a single bond, provided that when X.sup.A forms a single bond, then R.sup.1, R.sup.2A, R.sup.3A, R.sup.4A, R.sup.5A, and W.sup.A do not simultaneously represent a hydrogen …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.