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Satoru Okajima Patents |
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Inventor: Okajima; Satoru
Address: Tokyo, JP
No. of patents: 4
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 5061800 |
Camptothecin derivatives |
October 29, 1991 |
| New campotothecin derivatives and a process for preparing same are disclosed, which are represented by the general formula: ##STR1## wherein R.sup.1 represents a lower alkyl group, R.sup.2 represents a hydrogen atom or an amino, hydroxyl, lower acylamino or lower alkoxy group, R. |
| 4914205 |
Camptothecin derivatives |
April 3, 1990 |
| New camptothecin derivatives, useful as antitumor agents or intermediates therefor, of the general formula (I) ##STR1## wherein X is a lower alkyl group, and R is a hydrogen atom or the grouping -COY where Y is a linear or branched unsubstituted C.sub.1 -C.sub.18 alkyl group; a l |
| 4673635 |
Triphenyl methane derivatives and method of quantitatively measuring an oxidative substance |
June 16, 1987 |
| Disclosed herein is a novel compound which is excellent in solubility to water around a neutral range, stable in an aqueous solution state for a long period of time, and high in coloring sensitivity with a stable coloring development, and is represented by the general formula (I): ## |
| 4613465 |
Triphenyl methane derivatives and method of quantitatively measuring an oxidative substance |
September 23, 1986 |
| Disclosed herein is a novel compound which is excellent in solubility to water around a neutral range, stable in an aqueous solution state for a long period of time, and high in coloring sensitivity with a stable coloring development, and is represented by the general formula (I): ## |
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