Owner ImmunoGen, Inc.

Inventors Chari, Ravi V. J.; Widdison, Wayne C.

Agent Griffith Hack

Pub. Number AU-B-2004240541

PCT Pub. Number WO2004/103272

Priority 60/471,739 20.05.03 US

Filing date 20 May 2004

Wipo publication date 2 December 2004

Acceptance publication date 20 August 2009

A61K 31/5365 (2006.01) - ortho- or peri-condensed with heterocyclic ring systems

A61K 47/48 (2006.01) Medicinal preparations characterised by the non-active ingredients used, e.g. carriers, inert additives - the non-active ingredient being chemically bound to the active ingredient, e.g. polymer drug conjugates

C07D 491/12 (2006.01) Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups , , or

C07D 498/16 (2006.01) Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms