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850 78 |
Ultima descărcare din IBN: 2024-02-11 15:51 |
Căutarea după subiecte similare conform CZU |
542.06:547.945:581.5 (1) |
Практическая и лабораторная химия, препаративная и экспериментальная химия (139) |
Органическая химия (484) |
Экология растений. Этология. Растение и окружающая среда (177) |
SM ISO690:2012 JUMINA, Jumina, STYANINGRUM, Rizky Woro, SISWANTA, Dwi, TRIONO, Sugeng, PRIASTOMO, Yoga, HARIZAL, Harizal, SHOLIKHAH, Eti Nurwening, ZULKARNAIN, Abdul Karim. Synthesis and preliminary evaluation of several chalcone derivatives as sunscreen compounds. In: Chemistry Journal of Moldova, 2019, nr. 2(14), pp. 90-96. ISSN 1857-1727. DOI: https://doi.org/10.19261/cjm.2019.624 |
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Chemistry Journal of Moldova | ||||||
Numărul 2(14) / 2019 / ISSN 1857-1727 /ISSNe 2345-1688 | ||||||
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DOI:https://doi.org/10.19261/cjm.2019.624 | ||||||
CZU: 542.06:547.945:581.5 | ||||||
Pag. 90-96 | ||||||
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Rezumat | ||||||
Four chalcone derivatives containing chloro and methoxy substituents were synthesized and pre-evaluated as broad-spectrum UV protector with intrinsic antioxidant activity. UV absorbance of chalcones 1-4 showed a wide range of UV absorbance values in UVB and UVA regions ( Λ max= 310-360 nm) and molar absorptivity values ( Λ = 14,000-20,000 M-1cm-1). Chalcones 3 and 4 showed better photostability than chalcones 1 and 2 because the lowering of their absorbance was smaller and slower under UVB irradiation. A combination of the spectra of chalcone derivatives 1-4 indicated that a formulation containing all four will provide a broad-spectrum sunscreen protecting the skin from UVA and UVB. |
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Cuvinte-cheie chalcone, photostability, absorbance, sunscreen, broad-spectrum |
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