Continuous flow process for preparing budesonide
- Manjinder Singh Phulla,b
- Surender Singh Jadavc,d
- Chander Singh Boharab
- Rambabu Gundlaa
- Prathama S Mainkarc,d
- aDepartment of Chemistry, School of Science, GITAM (Deemed to Be University), Hyderabad, Telangana, 502329, India
- bCipla Limited Cipla House, Peninsula Business Park, Ganpatrao Kadam Marg, Lower Parel, Mumbai, 400013, India
- cDepartment of Applied Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, India
- dAcademy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, IndiaRead the publication that featured this abstract
Budesonide, a glucocorticosteroid, is used as anti-asthmatic drug that became generic in 2019. Existing preparation methods of budesonide require utilization of corrosive acids and involve expensive purification process. Thus, a new cost-effective continuous flow process for the synthesis of budesonide which belongs to the class of 16,17 acetals of pregnane core, is discussed in the present research findings. Flow reactor parameters such as flow rate, temperature, residence time, solution volumes, anti-solvents and reactor frequency are subjected to investigation on the preparation of molar ratio of budesonide epimers. Further, the suitable parameters entail for obtaining the desired molar ratio of epimers. In another aspect, particle size optimization studies are also performed to get the desired budesonide solid product. A continuous flow process for preparation of budesonide is identified from the present research investigation which can be readily transferred to industrial scale up.
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