| 摘要 |
PCT No. PCT/FR91/00229 Sec. 371 Date Oct. 15, 1993 Sec. 102(e) Date Oct. 15, 1993 PCT Filed Mar. 21, 1991 PCT Pub. No. WO92/16544 PCT Pub. Date Oct. 1, 1992The invention relates to a new derivative of caffeic acid. This new derivative has the formula I below: <IMAGE> (I) in which one or more R independently represent a hydrogen atom, a C1-C5 alkyl group, in particular methyl, and an acyl group, in particular a C1-C6 group, in particular acetyl. This new derivative called oraposide is particularly useful for the preparation of cosmetic or pharmaceutical compositions, in particular dermatological compositions, as a result in particular of its activity against free radicals, inflammation and aging due to radiation exposure. |
