5-substituted uridine derivatives
US5420117A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 1992 |
| Grant date | May 30, 1995 |
| Priority date | — |
| Expiry date | Oct 19, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07H19/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention provides a 5-substituted uridine derivative of the formula ##STR1## wherein X is F or CF.sub.3, R.sub.1 and R.sub.2 each represent a group --OSi--(R.sub.4)(R.sub.5)(R.sub.6) (wherein R.sub.4, R.sub.5 and R.sub.6 represent C.sub.1 -C.sub.10 alkyl or the like), OH, aminoacyloxy group wherein the amino group may be substituted with lower alkyl group or carboxylalkylcarbonyloxy group, R.sub.3 is a group --OSi(R.sub.4)(R.sub.5)(R.sub.6), H, OH, aminoacyloxy group wherein the amino group may be substituted with lower alkyl group, or carboxylalkylcarbonyloxy group, and at least one of R.sub.1, R.sub.2 and R.sub.3 is a group --OSi--(R.sub.4)(R.sub.5)(R.sub.6), with the proviso that when X is fluorine atom, R.sub.3 is not hydrogen, and an intermediate for the preparation thereof, preparation processes of the derivative and anti-tumor agent containing the derivative as an active ingredient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.