Lipid derivatives of phosphonoacids for liposomal incorporation and method of use
US5194654A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 22, 1989 |
| Grant date | Mar 16, 1993 |
| Priority date | — |
| Expiry date | Nov 22, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07H19/16
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Compounds are disclosed for treating viral infections due to herpes, influenza, hepatitis B, Epstein-Barr, and varicella zoster viruses, as well as cytomegalovirus and human immunodeficiency virus (HIV) by means of lipid derivatives of antiviral agents. The compounds consist of lipid derivatives of phosphonoacids having antiviral activity which are linked, commonly through the phosphate group of the phosphonoacid, to one of a selected group of lipids. The lipophilic nature of these compounds provides advantages over the use of the phosphonoacids alone. It also makes it possible to incorporate them into the lamellar structure of liposomes when combined with similar molecules. In the form of liposomes, these antiviral molecules are preferentially taken up by macrophages and monocytes, cells which have been found to harbor the target human immunodeficiency virus (HIV). Additional site specificity may be incorporated into the liposomes with the addition of ligands, such as monoclonal antibodies or other peptides or proteins which bind to viral proteins. Effective phosphonoacids are phosphonoformic acid or phosphonoacetic acid; lipid groups may be glycolipids, sphingolipids, phospholipi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.