The present invention relates to the use of compounds of the formula (I), with radicals defined in the description, as antioxidants, to corresponding novel compounds and compositions, and to corresponding processes for the preparation of compounds and compositions.
The present invention relates to the use of compounds which do not themselves exhibit significant UV absorption in the UV-A or UV-B region, but are reactive under use conditions, for the development of UV-A or UV-B protection during use, to corresponding novel compounds and compositions, and to corresponding processes for the preparation of compounds and compositions.
Chemoselective Esterification of Phenolic Acids and Alcohols
作者:Giovanni Appendino、Alberto Minassi、Nives Daddario、Federica Bianchi、Gian Cesare Tron
DOI:10.1021/ol0266471
日期:2002.10.1
[formula: see text] The Mitsunobu reaction can distinguish between alcohol and phenol hydroxyls in esterification reactions, providing an expeditious and broadly applicable entry into various phenolics and polyphenolics of biomedical and nutritional relevance.