PMID- 38025058 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20231201 IS - 2296-2646 (Print) IS - 2296-2646 (Electronic) IS - 2296-2646 (Linking) VI - 11 DP - 2023 TI - Cleaner synthesis of preclinically validated vaccine adjuvants. PG - 1252996 LID - 10.3389/fchem.2023.1252996 [doi] LID - 1252996 AB - We developed synthetic glycophospholipids based on a glucosamine core (FP compounds) with potent and selective activity in stimulating Toll-Like Receptor 4 (TLR4) as agonists. These compounds have activity and toxicity profiles similar to the clinically approved adjuvant monophosphoryl lipid A (MPLA), included in several vaccine formulations, and are now in the preclinical phase of development as vaccine adjuvants in collaboration with Croda International PLC. FP compound synthesis is shorter and less expensive than MPLA preparation but presents challenges due to the use of toxic solvents and hazardous intermediates. In this paper we describe the optimization of FP compound synthesis. The use of regio- and chemoselective reactions allowed us to reduce the number of synthesis steps and improve process scalability, overall yield, safety, and Process Mass Intensity (PMI), thus paving the way to the industrial scale-up of the process. CI - Copyright (c) 2023 Romerio and Peri. FAU - Romerio, Alessio AU - Romerio A AD - Department of Biotechnology and Biosciences, Universita degli Studi di Milano-Bicocca, Milano, Italy. FAU - Peri, Francesco AU - Peri F AD - Department of Biotechnology and Biosciences, Universita degli Studi di Milano-Bicocca, Milano, Italy. LA - eng PT - Journal Article DEP - 20231102 PL - Switzerland TA - Front Chem JT - Frontiers in chemistry JID - 101627988 PMC - PMC10651716 OTO - NOTNLM OT - TLR4 OT - glycolipid OT - green chemistry OT - medicinal chemistry OT - optimization COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2023/11/29 18:42 MHDA- 2023/11/29 18:43 PMCR- 2023/01/01 CRDT- 2023/11/29 16:21 PHST- 2023/07/04 00:00 [received] PHST- 2023/09/26 00:00 [accepted] PHST- 2023/11/29 18:43 [medline] PHST- 2023/11/29 18:42 [pubmed] PHST- 2023/11/29 16:21 [entrez] PHST- 2023/01/01 00:00 [pmc-release] AID - 1252996 [pii] AID - 10.3389/fchem.2023.1252996 [doi] PST - epublish SO - Front Chem. 2023 Nov 2;11:1252996. doi: 10.3389/fchem.2023.1252996. eCollection 2023.