Process for the preparation and purification of valgancyclovir hydrochloride
US7935818B2 · kind B2 · utility
0Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2007 |
| Grant date | May 3, 2011 |
| Priority date | — |
| Expiry date | Dec 16, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P31/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of valgancyclovir which comprises: in an aprotic solvent, in the presence of a condensing agent, with a compound of formula 8,wherein R1, and R2 may be, each independently, hydrogen, an halogen atom or an hydroxyl group; the double bond may either be in the E or Z configuration or a mixture thereof to yield a compound of formula 9
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.