Carbonate intermediates for the synthesis of purine substituted cyclopentene derivatives
US5241069A · kind A · utility
2Cited by
3References
2Claims
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Key dates
| Filing date | Nov 6, 1991 |
| Grant date | Aug 31, 1993 |
| Priority date | — |
| Expiry date | Nov 6, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D473/18
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention relates to the new process for preparing the 1R-cis isomer of carbovir, (1R-cis)-amino-1,9-dihydro-9-[4-(hydroxymethyl)-2-cyclopenten-1-yl]-6H-pur in-6-one, an antiviral agent and intermediates of the formula (Vlb) use in that process ##STR1## wherein X is chloro, bromo or iodo and R is (C.sub.1-6) alkyl.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.