SG11201906781VA - Antimicrobial compositions comprising copper-hydroxypyrone complexes - Google Patents

Abstract

International Patent Classification: A61K 31/351 (2006.01) A61P 31/04 A61K 33/34 (2006.01) A61P 31/06 A61K 9/00 (2006.01) A61P 31/10 (2006.01) (2006.01) (2006.01) (21) International Application Number: (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 09 August 2018 (09.08.2018) WIP0 I PCT ill 1111u°11101llioIIl °nolo DID maim Eno iflo oimIE (10) International Publication Number WO 2018/141989 Al TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). (22) International Filing Date: Declarations under Rule 4.17: — of inventorship (Rule 4.17(iv)) PCT/EP2018/052958 Published: — with international search report (Art. 21(3)) 06 February 2018 (06.02.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 1701944.9 06 February 2017 (06.02.2017) GB (71) Applicant: UNITED KINGDOM RESEARCH AND IN- NOVATION [GB/GB]; Polaris House, North Star Avenue, Swindon SN2 1FL (GB). (72) Inventors: POWELL, Jonathan Joseph; 145 Histon Road, Cambridge Cambridgeshire CB4 3JD (GB). FARIA, Nuno, Jorge, Rodrigues; 3 Starey Close, Milton Ernest Bedfordshire MK44 1RX (GB). BASTOS, Carlos Andre Passos; 50 Tiverton Way, Cambridge Cambridgeshire CB1 3TU (GB). = (74) Agent: KIDDLE, Simon et al.; Mewburn Ellis LLP, City Tower, 40 Basinghall Street, London Greater London EC2V 5DE (GB). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, 1-1 00 CN (54) Title: ANTIMICROBIAL COMPOSITIONS COMPRISING COPPER-HYDROXYPYRONE COMPLEXES 1-1 I I - (57) : Copper based antibacterial agents are described based on amphiphilic copper complexes formed between copper and 1-1 hydroxypyrones, such as maltol. In further aspects, the present invention relates to PEG based-ointments showing that they are partic- ularly effective for topical delivery of amphiphilic complexes of copper. In particular, PEG ointments were shown to limit bacterial 1-1 © growth, even when in the absence of copper agent. However, this bacteriostatic effect is shown herein to become a true biocidal effect N when copper hydroxypyrones are added to the PEG.