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Peklar B, Perdih F, Makuc D, Plavec J, Cluzeau J, Kitanovski Z, Časar Z. Glasdegib Dimaleate: Synthesis, Characterization and Comparison of Its Properties with Monomaleate Analogue. Pharmaceutics 2022; 14:1641. [PMID: 36015269 PMCID: PMC9415664 DOI: 10.3390/pharmaceutics14081641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 08/01/2022] [Accepted: 08/03/2022] [Indexed: 11/17/2022] Open
Abstract
Glasdegib is a recently approved drug for the treatment of acute myeloid leukemia. It is formulated and marketed in monomaleate salt form. In our investigation, we were able to prepare a glasdegib dimaleate form, which could, in theory, exist in double-salt form or as a mixture of salt and co-crystal species. Therefore, the obtained crystals of glasdegib dimaleate were characterized via 15N ssNMR and single-crystal X-ray diffraction, which revealed that the obtained glasdegib dimaleate exists in double-salt form. This is a surprising finding based on the pKa values for glasdegib and maleic acid. Furthermore, we fully characterized the new dimaleate form using thermal analyses (DSC and TGA) and spectroscopy (IR and Raman). Finally, the physicochemical properties, such as solubility and chemical stability, of both forms were determined and compared.
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Affiliation(s)
- Boris Peklar
- Lek Pharmaceuticals d.d., Sandoz Development Center Slovenia, Kolodvorska 27, 1234 Mengeš, Slovenia
- Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova ulica 17, 2000 Maribor, Slovenia
| | - Franc Perdih
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia
| | - Damjan Makuc
- Slovenian NMR Centre, National Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia
- EN-FIST Centre of Excellence, Trg Osvobodilne Fronte 13, 1000 Ljubljana, Slovenia
| | - Janez Plavec
- Slovenian NMR Centre, National Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia
- EN-FIST Centre of Excellence, Trg Osvobodilne Fronte 13, 1000 Ljubljana, Slovenia
| | - Jérôme Cluzeau
- Lek Pharmaceuticals d.d., Sandoz Development Center Slovenia, Kolodvorska 27, 1234 Mengeš, Slovenia
| | - Zoran Kitanovski
- Lek Pharmaceuticals d.d., Sandoz Development Center Slovenia, Kolodvorska 27, 1234 Mengeš, Slovenia
| | - Zdenko Časar
- Lek Pharmaceuticals d.d., Sandoz Development Center Slovenia, Kolodvorska 27, 1234 Mengeš, Slovenia
- Faculty of Pharmacy, University of Ljubljana, Aškerčeva Cesta 7, 1000 Ljubljana, Slovenia
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