Prosetta, antiviral-drug developer, raises $2M

Prosetta, a San Francisco developer of new antiviral therapies, raised $2 million in early financing, VentureWire reports (subscription required). The company termed the funding a “series AAA” round that has the same terms as its earlier $1 million “series A” and $5 million “series AA” financings, but different valuations. Individual investors provided the entire funding, which values the company at over $20 million.