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Patent Searching and Data


Title:
ULTRA-VIOLET ABSORBING COMPOUNDS
Document Type and Number:
WIPO Patent Application WO/2020/128112
Kind Code:
A4
Abstract:
The present application relates to novel compounds able to absorb UV radiation and comprise antimicrobial properties as well. The compounds herein described are novel and undisclosed scytonemin analogs, able to absorb up to 90% of UV-A radiation and can cover a broader UV to blue light absorption range from 293 nm to 500 nm. When mixtures of more than one compound are used, their synergetic absorption properties can cover an even broader spectrum within 293 nm to 500 nm. The compounds described present faint coloration, and some are even colorless, therefor the present compounds can be easily incorporated in formulations to be used in cosmetic products, sunscreens or lenses for sunglasses.

Inventors:
PEDROSA MARTINS TERESA PATRÍCIA (PT)
ALVES REIS MARIANA (PT)
DA COSTA LEÃO PEDRO NUNO (PT)
OLIVEIRA VASCONCELOS VITOR MANUEL (PT)
HASSOUANI MERYEM (MA)
SABOUR BRAHIM (MA)
Application Number:
PCT/EP2020/050025
Publication Date:
September 03, 2020
Filing Date:
January 02, 2020
Export Citation:
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Assignee:
CIIMAR CENTRO DE INVESTIG MARINHA E AMBIENTAL (PT)
UNIV DO PORTO (PT)
FACULTY OF SCIENCES CHOUAIB DOUKKALI UNIV (MA)
International Classes:
C09B61/00; A61K8/35; A61Q17/04; C09B57/00; G02B1/04
Attorney, Agent or Firm:
FERREIRA, Maria (PT)
Download PDF:
Claims:
AMENDED CLAIMS

received by the International Bureau

on 29 June 2020 (29.06.2020)

1. Ultra-violet (UV) radiation absorbing compounds scytonemin (A), 3 ' -hydroxyscytonemin (B) and 9,3'- dihydroxyscytonemin (C) of formulas:

and stereoisomers thereof, wherein the compounds have antibacterial activity.

2. Compounds according to any of the previous claims, wherein the compounds absorb light from 293 nm to 500 nm.

3. Compounds according to any of the previous claims, wherein they absorb up to 90% of UV-A radiation.

4. Compounds according to any of the previous claims, wherein the compounds have antioxidant activity.

5. Compounds according to any of the claims 1 to 4, for use in cosmetic products.

6. Compounds according to any of the claims 1 to 4, for use in sunscreens.

7. Compounds according to any of the claims 1 to 4, for use in sunglasses.

8. Formulations comprising the compounds described in any of the claims 1 to 4.

9. Formulations according to the previous claim, wherein the formulations comprise one compound.

10. Formulations according to claim 8, wherein the formulations comprise more than one compound.

11. Formulations according to any of the claims 8 to 10, for use in cosmetic products.

12. Formulations according to any of the claims 8 to 10, for use in sunscreens.

13. Formulations according to any of the claims 8 to 10, for use in lenses for sunglasses.