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US 11,981,687 B2 |
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| Methods of preparing cytotoxic benzodiazepine derivatives |
| Baudouin Gérard, Belmont, MA (US); Richard A. Silva, Needham, MA (US); Michael Louis Miller, Framingham, MA (US); and Manami Shizuka, Belmont, MA (US) |
| Assigned to IMMUNOGEN, INC., Waltham, MA (US) |
| Filed by IMMUNOGEN, INC., Waltham, MA (US) |
| Filed on Jun. 15, 2022, as Appl. No. 17/841,026. |
| Application 17/841,026 is a continuation of application No. 17/077,688, filed on Oct. 22, 2020, granted, now 11,390,633. |
| Application 17/077,688 is a continuation of application No. 16/442,718, filed on Jun. 17, 2019, granted, now 10,844,078, issued on Nov. 24, 2020. |
| Application 16/442,718 is a continuation of application No. 15/878,991, filed on Jan. 24, 2018, granted, now 10,385,071, issued on Aug. 20, 2019. |
| Claims priority of provisional application 62/450,270, filed on Jan. 25, 2017. |
| Prior Publication US 2023/0039161 A1, Feb. 9, 2023 |
| This patent is subject to a terminal disclaimer. |
| Int. Cl. C07D 207/452 (2006.01); C07C 205/19 (2006.01); C07D 487/04 (2006.01); C07D 519/00 (2006.01); C07D 519/04 (2006.01) |
